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1,908,843 | The Ultimate Guide to Organic Growth | In today’s digital age, organic search traffic rules as a cornerstone of online success. It serves as... | 0 | 2024-07-02T11:56:36 | https://dev.to/dotit/the-ultimate-guide-to-organic-growth-45ep | In today’s digital age, organic search traffic rules as a cornerstone of online success. It serves as the lifeblood of businesses, driving qualified leads and conversions with efficiency. Unlike paid search traffic, organic search traffic is more valuable, boasting higher click-through rates (CTRs) and delivering users actively seeking information related to products or services.
Harnessing the power of organic search traffic is not just beneficial; it’s essential for staying competitive in the digital landscape. As search engines continue to evolve and refine their algorithms, businesses must adapt by prioritizing their organic search strategy. Ignoring this vital aspect of online presence means missing out on a vast pool of potential customers.
Understanding Organic Search Traffic
[Organic search traffic](https://dotit.org/the-ultimate-guide-to-organic-growth/) is fundamental to navigating the complexities of online visibility and driving business growth. Essentially, organic search traffic refers to the influx of visitors to a website who arrive via unpaid search results on search engines like Google, Bing, and Yahoo. Unlike paid search traffic, which involves advertising expenditures, organic search traffic is free, making it a cost-effective method of attracting potential customers.
Organic search traffic is not only cost-effective but also highly valuable in terms of lead quality. Users who find a website through organic search are actively seeking information related to products or services, indicating a higher level of intent and interest. This inherent relevance translates to higher click-through rates (CTRs) and a greater likelihood of conversion.
Search engines play a pivotal role in facilitating organic search traffic by indexing and ranking web pages based on relevance, authority, and user experience. Websites that effectively optimize their content for search engines stand to benefit from increased visibility and traffic. This optimization process, known as search engine optimization (SEO), involves various strategies such as keyword research, content optimization, and technical SEO enhancements.
Moreover, organic search traffic is a reliable indicator of a website’s credibility and trustworthiness. Websites that consistently rank well in organic search results are perceived as authoritative sources of information within their respective industries. This perception of authority not only attracts more organic traffic but also enhances brand reputation and customer trust.
Tracking Organic Search Traffic
Tracking organic search traffic is essential for businesses aiming to gauge the effectiveness of their online presence and optimize their digital marketing strategies accordingly. Organic search traffic refers to the flow of visitors to a website who arrive via unpaid search results on search engines like Google, Bing, and Yahoo. By monitoring organic search traffic, businesses can gain valuable insights into their website’s performance, user behavior, and overall search engine visibility.
To effectively track organic search traffic, businesses can utilize a range of powerful SEO tools and analytics platforms. These tools provide comprehensive data on various metrics, including the number of clicks, click-through rate (CTR), bounce rate, and average session duration. By analyzing this data, businesses can identify trends, track performance over time, and pinpoint areas for improvement.
One of the most widely used tools for tracking organic search traffic is Google Analytics. This free platform offers a wealth of information about website traffic, including the sources of traffic, user demographics, and behavior. By setting up Google Analytics tracking, businesses can monitor organic search traffic in real-time, gain insights into keyword performance, and track the effectiveness of their SEO efforts.
In addition to Google Analytics, businesses can also leverage other SEO tools such as SEMrush, MOZ, and Ahrefs. These tools provide in-depth analysis of organic search traffic, including keyword rankings, backlink profiles, and site audit reports. By combining data from multiple sources, businesses can gain a more comprehensive understanding of their organic search performance and make informed decisions about their SEO strategy.
Furthermore, tracking organic search traffic allows businesses to measure the impact of their SEO efforts on key performance indicators (KPIs) such as website traffic, lead generation, and conversion rates. By monitoring changes in organic search traffic over time, businesses can assess the effectiveness of their SEO strategy and make adjustments as needed to improve results. | dotit | |
1,908,842 | BitPower’s security analysis: | First, BitPower uses advanced encryption algorithms to ensure that data is not tampered with or... | 0 | 2024-07-02T11:55:52 | https://dev.to/bao_xin_145cb69d4d8d82453/bitpowers-security-analysis-52c4 | First, BitPower uses advanced encryption algorithms to ensure that data is not tampered with or stolen during transmission and storage. All transaction data is processed by hash functions, so that any slight changes will lead to significant changes in the hash value, thereby ensuring data integrity.
Secondly, BitPower uses distributed ledger technology so that each transaction is recorded and verified by multiple nodes. This decentralized structure avoids single point failures and improves the robustness and reliability of the system. At the same time, the application of smart contracts automates the transaction process and reduces the risk of human intervention.
In addition, BitPower also uses multi-signature technology and identity authentication mechanisms to ensure that only authorized users can perform transaction operations. This not only improves the security of the system, but also prevents malicious attacks and illegal access.
In short, BitPower provides a reliable, transparent and efficient electricity trading platform through multi-level security design, providing solid protection for users' data and assets. | bao_xin_145cb69d4d8d82453 | |
1,908,841 | Insights into ITIL Processes | ITIL (Information Technology Infrastructure Library) is a set of practices for IT service management... | 0 | 2024-07-02T11:53:12 | https://dev.to/angelika_jolly_4aa3821499/insights-into-itil-processes-ml9 | process, itil, insight, define | ITIL (Information Technology Infrastructure Library) is a set of practices for IT service management (ITSM) that focuses on aligning IT services with the needs of the business. Here’s a detailed look at its key processes:
1. Service Strategy
- Objective: Define the perspective, position, plans, and patterns that a service provider needs to execute to meet an organization's business outcomes.
- Key Processes:
- Service Portfolio Management: Manage the service portfolio and ensure the right mix of services to meet required business outcomes.
- Financial Management for IT Services: Manage the service provider's budgeting, accounting, and charging requirements.
- Demand Management: Understand, anticipate, and influence customer demand for services.
- Business Relationship Management: Maintain a positive relationship with customers by understanding their needs and ensuring the service provider meets them.
2. Service Design
- Objective: Design IT services, along with the governing IT practices, processes, and policies, to realize the service provider's strategy.
- Key Processes:
- Service Catalog Management: Ensure accurate information on all operational services and those being prepared to run.
- Service Level Management: Define, document, agree, monitor, measure, report, and review the levels of IT service.
- Capacity Management: Ensure the capacity of IT services and the IT infrastructure is able to meet agreed requirements.
- Availability Management: Ensure that IT services meet the current and future availability needs of the business.
- IT Service Continuity Management: Manage risks that could seriously impact IT services.
- Information Security Management: Align IT security with business security and ensure information security is effectively managed.
- Supplier Management: Manage suppliers and the services they provide to ensure seamless service delivery.
3. Service Transition
- Objective: Ensure that new, modified, or retired services meet the expectations of the business as documented in the service strategy and service design stages.
- Key Processes:
- Transition Planning and Support: Plan and coordinate resources to deploy a major release within the predicted cost, time, and quality estimates.
- Change Management: Control the lifecycle of all changes, enabling beneficial changes with minimum disruption to IT services.
- Service Asset and Configuration Management: Maintain information about configuration items required to deliver an IT service, including their relationships.
- Release and Deployment Management: Plan, schedule, and control the movement of releases to test and live environments.
- Service Validation and Testing: Ensure that deployed releases and the resulting services meet customer expectations.
- Change Evaluation: Assess major changes before they are implemented.
- Knowledge Management: Share perspectives, ideas, experience, and information to ensure that the right information is delivered to the right place at the right time.
4. Service Operation
- Objective: Deliver agreed levels of service to users and manage applications, technology, and infrastructure that support service delivery.
- Key Processes:
- Event Management: Detect events, make sense of them, and determine the appropriate control action.
- Incident Management: Restore normal service operation as quickly as possible and minimize the impact on business operations.
- Request Fulfillment: Manage the lifecycle of all service requests.
- Problem Management: Manage the lifecycle of all problems, preventing incidents from happening and minimizing the impact of incidents that cannot be prevented.
- Access Management: Grant authorized users the right to use a service while preventing access to unauthorized users.
5. Continual Service Improvement (CSI)
- Objective: Align and realign IT services to changing business needs by identifying and implementing improvements to IT services that support business processes.
- Key Processes:
- Service Review: Review business services and infrastructure services on a regular basis.
- Process Evaluation: Review processes to ensure they are effective and efficient.
- Definition of CSI Initiatives: Define specific initiatives aimed at improving services and processes.
- Monitoring of CSI Initiatives: Monitor and measure the progress and performance of CSI initiatives.
Each of these stages is interconnected, and together they provide a comprehensive framework for managing IT services that align with business goals and needs.
https://www.youtube.com/watch?v=x2uuc7E26B4&t=
| angelika_jolly_4aa3821499 |
1,908,840 | Maria B Lawn Collection 2024 Unstitched | Unveil Maria B’s regal Luxury Lawn Collection 2024. A fusion of Eastern and Western influences, these... | 0 | 2024-07-02T11:53:09 | https://dev.to/shabana_bano_1e2fe2ec5f95/maria-b-lawn-collection-2024-unstitched-334h | mariadb | Unveil Maria B’s regal Luxury Lawn Collection 2024. A fusion of Eastern and Western influences, these elegant designs are perfect for Eid parties and festive events. Featuring premium lawn and chiffon fabric, these dresses are sure to elevate your partywear. Check out the complete range online to find your perfect outfit!
**Styles**
If you’re looking to add something special to your party wear wardrobe this season, check out the Maria B party dress collection. This gorgeous range of dresses includes both traditional and modern styles, so you can find the perfect fit for any occasion. The brand is known for its innovative and transformative designs that incorporate elements of eastern culture with western aesthetics. Each dress tells a unique story of tradition and modernity, making it a truly memorable fashion experience. The brand’s latest line of <a href="https://ibaasonline.com/collections/maria-b">maria b lawn 2024 unstitched</a> is no exception.
Featuring floral embellishments and digital prints, this collection is sure to impress. This regal collection features premium fabrics, vibrant hues, innovative embroidery and embellishments, ribbon, laser and cut work that transcend conventional trends. This is a must-have for every fashion lover! Once your order has been dispatched, you will receive a tracking link via email or SMS that you can use to track the status of your purchase until it reaches your doorstep. This allows you to rest assured that your order will be delivered in the best condition possible.
**Fabric**
Brand Maria B is one of Pakistan’s top designer brands that offers a wide selection of clothing in beautiful colors. The designer is renowned for her fusion designs that bridge Eastern and Western influences. From floral patterns to intricate embroidery, this label has something for everyone. The brand’s embroidered chiffon suits are perfect for wedding parties and casual outings with friends. These suits feature a mixture of dark and light shades and are adorned with elegant embroidery that is both chic and sophisticated. The brand also has a range of winter linen dresses that are ideal for cold weather.
The brand’s collection of embroidered chiffon and linen suits is available online. You can purchase these suits from Al Karim Fabric Store and website at affordable prices. The collection includes 3 piece embroidered luxury and embroidered lawn suits as well as embroidered chiffon and linen suits in different colors. The fabric is of high quality and the stitching is impeccable. You can even get customized shirts from the brand. Once you place your order, you will receive a tracking link so that you can track the status of your shipment until it arrives at your doorstep. This is an excellent option for those who live in remote areas and cannot visit a physical store.
**Colors**
When it comes to color, Maria B's luxury lawn 2024 collection offers a kaleidoscope of hues and intricate designs. This season, the brand's designers have infused ethnic motifs with modern aesthetics to create a stunning collection that is perfect for the summer. Maria B is one of the leading Pakistani fashion brands that blends Eastern and Western influences. The brand has a wide range of bridal gowns, casual dresses, and embroidered lawn suits. Its collections are a beautiful fusion of style and comfort, and the brand's commitment to quality is evident in every design. The collection includes both formal and casual outfits that can be worn for wedding parties and family gatherings.
The brand also offers a winter linen range that is ideal for cold weather. Maria b party wear 2024 is a beautiful assortment of outfits that will make you stand out at any event. The designer's signature fusion of tradition and modernity is evident in this collection, which features both long shirt and sleeve less designs. Whether you're looking for a dress to wear to an engagement party or an upcoming wedding, you'll find the perfect outfit in our maria b party wear 2024 collection.
**Sizes**
The Maria B Lawn 2024 collection is available in unstitched, <a href="https://ibaasonline.com/collections/mbroidered-collection">embroidered suits</a>, chiffon and winter linen range. The floret beauty of this spring summer lawn edits features florious delineate & scintillating colors. This Luxury Pakistani Suit is available up to 44 Inches Bust Size and can be customized as per your requirements. Maria B is a Lahore based fashion brand founded in 1999. This designer brand blends Eastern and Western influences to create stunning high-quality clothes. Their designs are perfect for Wedding & Festive Eid Events.
Ibaas Online offers online shopping of complete branded Maria B suits including 3 piece mbroided, Lawn and Chiffon Ranges. We offer worldwide shipping of authentic Maria B clothes. Please refer to the sizing chart for measurements before ordering as items cannot be returned or exchanged once purchased. We provide best quality embroidered dresses in chiffon, cotton, khaddar, linen & silk fabrics. We also offer stitching services to our clients. | shabana_bano_1e2fe2ec5f95 |
1,908,838 | The Technical Side of ScheduleJS: APIs and Customization | Introduction In the fast-evolving world of web applications, efficient and flexible... | 0 | 2024-07-02T11:51:20 | https://dev.to/lenormor/the-technical-side-of-schedulejs-apis-and-customization-54eh | webdev, javascript, beginners, programming | ## Introduction
In the fast-evolving world of web applications, efficient and flexible scheduling is critical. ScheduleJS stands out as a powerful web-native framework designed for advanced scheduling needs. This article delves
into the technical aspects of ScheduleJS, focusing on its APIs and customization capabilities. We'll explore how developers can leverage these features to create highly customized and efficient scheduling solutions.
## Understanding ScheduleJS
[ScheduleJS](https://schedulejs.com/) is a JavaScript framework that provides comprehensive tools for building scheduling applications. It is known for its performance, flexibility, and ease of integration with various systems, including Customer Relationship Management (CRM) platforms like Selligent CRM. The core strength of ScheduleJS lies in its robust API and extensive customization options, allowing developers to tailor the application to specific business needs.
## APIs: The Backbone of ScheduleJS
**1. Overview of ScheduleJS APIs**
APIs (Application Programming Interfaces) are the cornerstone of ScheduleJS, enabling seamless integration and communication between the scheduling application and other systems. The ScheduleJS API provides a wide range of functionalities, from basic scheduling tasks to complex operations.
**2. Data Handling APIs**
These APIs manage the creation, retrieval, update, and deletion (CRUD) of scheduling data. They ensure that the data remains consistent and up-to-date across the application.
Example: `getEvents()`, `addEvent(event)`, `updateEvent(event)`, `deleteEvent(eventId)`.
**3. Configuration APIs**
These APIs allow developers to configure the scheduling application according to specific requirements. They include settings for time zones, working hours, resource management, and more.
Example: `setTimeZone(timeZone)`, `setWorkingHours(start, end)`, `configureResources(resources)`.
**4. Event Management APIs**
These APIs handle all aspects of event management, including creating, updating, and deleting events. They also manage event listeners and handlers for various user interactions.
Example: `onEventClick(callback)`, `onEventDrag(callback)`, `onEventResize(callback)`.
**5. View Management APIs**
ScheduleJS provides APIs to customize the views of the scheduling application, such as day view, week view, month view, and timeline view.
Example: `setView(viewType)`, `customizeView(viewSettings)`.
**6. Utility APIs**
These APIs offer utility functions that help in performing common tasks, such as date formatting, localization, and more.
Example: `formatDate(date, format)`, `localize(language)`.
## API Integration with Selligent CRM
One of the standout features of ScheduleJS is its seamless integration with CRM systems like Selligent CRM. This integration is achieved through robust API capabilities, allowing real-time synchronization of scheduling data with the CRM system. Here’s a step-by-step guide on how this integration works:
- **Authentication and Authorization**
Securely authenticate and authorize API requests using OAuth or other security protocols.
Example: `authenticate(clientId, clientSecret)`.
- **Data Synchronization**
Synchronize scheduling data between ScheduleJS and Selligent CRM in real-time, ensuring consistency across both platforms.
Example: `syncEventsWithCRM(crmEvents)`, `updateCRMData(scheduleData)`.
- **Custom Event Handlers**
Create custom event handlers to manage interactions between the scheduling application and CRM.
Example: onCRMEventUpdate(callback), onScheduleChange(callback).
## Customization: Tailoring ScheduleJS to Your Needs
- **Customizing the User Interface**
ScheduleJS offers extensive customization options to tailor the user interface (UI) according to specific requirements. This includes modifying the layout, colors, fonts, and more.
- **Custom Layouts**
Define custom layouts for different views (day, week, month) to enhance the user experience.
Example: `setCustomLayout(viewType, layoutConfig)`.
- **Theming and Styling**
Apply custom themes and styles to match the branding guidelines of the organization.
Example: `applyTheme(themeConfig)`, `customizeStyles(stylesConfig)`.
- **Interactive Elements**
Customize interactive elements such as buttons, tooltips, and modals to improve usability.
Example:` customizeButton(buttonConfig)`, `setTooltipContent(tooltipConfig)`.
## Extending Functionality with Plugins
ScheduleJS supports a plugin architecture that allows developers to extend its functionality. Plugins can be used to add new features or enhance existing ones without modifying the core framework.
- **Creating Custom Plugins**
Develop custom plugins to add new functionalities or integrate with third-party services.
Example: `createPlugin(pluginName, pluginConfig)`.
- **Using Existing Plugins**
Utilize existing plugins from the ScheduleJS community to enhance the application.
Example: `loadPlugin(pluginName, pluginOptions)`.
- **Plugin Management**
Manage the lifecycle of plugins, including installation, activation, and updates.
Example: `installPlugin(pluginName)`, `activatePlugin(pluginName)`, `updatePlugin(pluginName)`.
## Advanced Customization Techniques
For advanced users, ScheduleJS offers deeper customization options, including custom scripting, integration with other libraries, and more.
- **Custom Scripting**
Use custom scripts to add complex functionalities or automate tasks within the scheduling application.
Example: `runCustomScript(scriptCode)`.
- **Integration with Other Libraries**
Integrate ScheduleJS with other JavaScript libraries to leverage additional functionalities.
Example: `integrateWithLibrary(libraryName, libraryConfig)`.
- **Custom Data Sources**
Connect ScheduleJS to custom data sources, such as databases, APIs, or external systems.
Example: `setDataSource(dataSourceConfig)`.
## Case Study: ScheduleJS in Action
To illustrate the power of ScheduleJS, let's examine a real-world case study involving its integration with Selligent CRM for a leading beauty brand. The goal was to create a sophisticated scheduling application for managing the schedules of beauty consultants.
## Project Requirements
- **User-Friendly Interface**
The application needed an intuitive interface that allowed beauty consultants to easily manage their schedules.
- **Real-Time Synchronization**
Schedule data had to be synchronized in real-time with Selligent CRM to ensure consistency.
- **Custom Features**
Specific features were required, such as drag-and-drop scheduling, custom notifications, and detailed reporting.
## Implementation Steps
- **API Integration**
Integrated ScheduleJS with Selligent CRM using the provided APIs for real-time data synchronization.
- **Custom UI Development**
Developed a custom user interface tailored to the needs of the beauty consultants, including custom layouts and interactive elements.
- **Feature Extension**
Extended the core functionalities of ScheduleJS with custom plugins to add required features like drag-and-drop scheduling and notifications.
- **Testing and Deployment**
Conducted thorough testing to ensure the application met all requirements and deployed it in the production environment.
## Outcomes
- **Improved Efficiency**
The integration resulted in significantly improved scheduling efficiency, reducing the time spent on managing schedules.
- **Enhanced User Experience**
The custom UI and features provided a seamless and user-friendly experience for beauty consultants.
- **Positive Feedback**
The feedback from the client was overwhelmingly positive, highlighting the application's ease of use and efficiency.
## Best Practices for Using ScheduleJS APIs and Customization
To maximize the benefits of ScheduleJS, it is essential to follow best practices in API usage and customization:
- **Plan Ahead**
Clearly define the requirements and plan the integration and customization steps accordingly.
- **Secure API Communication**
Ensure all API communications are secure, using protocols like OAuth for authentication.
- **Optimize Performance**
Regularly optimize the performance of the scheduling application by monitoring and fine-tuning API calls and custom scripts.
- **Maintain Documentation**
Keep thorough documentation of the customizations and API integrations to facilitate maintenance and future updates.
- **Engage the Community**
Participate in the ScheduleJS community to share knowledge, discover plugins, and stay updated with the latest developments.
## Conclusion
[ScheduleJS](https://schedulejs.com/), with its robust APIs and extensive customization options, is a powerful tool for developing advanced scheduling applications. Its ability to integrate seamlessly with CRM systems like Selligent CRM and its flexibility in customization make it an ideal choice for businesses looking to enhance their scheduling efficiency. By following best practices and leveraging the full potential of ScheduleJS, developers can create highly tailored and efficient scheduling solutions that meet the specific needs of their organizations.
**Website:** [ScheduleJS](https://schedulejs.com/) | lenormor |
1,908,837 | The Art of Feature Engineering: Building Better Machine Learning Models | Imagine a sculptor with a block of raw marble. Their skill lies not just in wielding the chisel, but... | 0 | 2024-07-02T11:51:09 | https://dev.to/fizza_c3e734ee2a307cf35e5/the-art-of-feature-engineering-building-better-machine-learning-models-5gl3 | datascience, machinelearning |
Imagine a sculptor with a block of raw marble. Their skill lies not just in wielding the chisel, but in envisioning the masterpiece within the stone. Similarly, in the realm of machine learning (ML), the raw data is the marble, and feature engineering is the sculptor's chisel. By carefully crafting features, we transform data from a shapeless mass into a form that empowers ML models to learn and predict effectively.
**What is Feature Engineering?**
Feature engineering is the process of transforming raw data into features, also known as attributes, that are most informative for a specific machine learning task. These features act as the building blocks for the model, influencing its ability to identify patterns and relationships within the data.
**Why is Feature Engineering Important?**
High-quality features are the cornerstone of successful machine learning models. Well-engineered features offer several advantages:
**Improved Model Performance:** By providing clear and relevant information, good features enable models to learn more effectively, leading to better accuracy and generalizability.
**Reduced Training Time:** When data is preprocessed and transformed into meaningful features, models require less training time to achieve optimal performance.
**Enhanced Model Interpretability:** Carefully crafted features can shed light on the factors influencing the model's predictions, making them more interpretable and trustworthy.
**Common Feature Engineering Techniques**
The toolbox of a feature engineer is vast, encompassing techniques like:
**Data Cleaning and Preprocessing:** Handling missing values, outliers, and inconsistencies in the data to ensure its quality.
**Feature Creation:** Deriving new features from existing ones through calculations and transformations.
**Feature Selection:** Choosing the most relevant features and discarding redundant or irrelevant ones to avoid overfitting the model.
**Feature Scaling:** Ensuring all features are on a similar scale to prevent certain features from dominating the model's learning process.
**Become a Feature Engineering Master**
The art of feature engineering can be honed through practice and a strong foundation in data science principles. Enrolling in a data science professional course](https://bostoninstituteofanalytics.org/data-science-and-artificial-intelligence/) with a focus on feature engineering can equip you with the knowledge and skills to:
* Understand the theoretical underpinnings of feature engineering.
* Apply different feature engineering techniques to various machine learning tasks.
* Evaluate the effectiveness of different feature sets on model performance.
* Develop a data-driven approach to feature selection and transformation.
By investing in a data science professional course on feature engineering, you'll be well on your way to becoming a sculptor of data, shaping it into a form that empowers machine learning models to unlock valuable insights and make impactful predictions. So, unleash your inner feature engineer and watch your machine learning models soar! | fizza_c3e734ee2a307cf35e5 |
1,908,836 | Comprehensive Guide to Vulnerability Assessment: Part 1 | Hello, aspiring cybersecurity professionals and enthusiasts! Today, I’m thrilled to share my journey... | 0 | 2024-07-02T11:49:48 | https://dev.to/ashhadali/comprehensive-guide-to-vulnerability-assessment-part-1-o7 | cybersecurity, beginners, webdev, devops | Hello, aspiring cybersecurity professionals and enthusiasts! Today, I’m thrilled to share my journey in mastering vulnerability assessment, a pivotal aspect of securing modern digital infrastructures. This detailed guide will walk you through the key concepts, methodologies, tools, and best practices that I've learned during my course on vulnerability assessment. Let’s dive in!
### Why Vulnerability Assessment (VA) is Crucial
Vulnerability assessment is a proactive measure to identify, classify, and address security weaknesses in a system. By regularly performing VA, organizations can mitigate risks, protect sensitive data, and ensure compliance with industry standards.
**Key Terms and Concepts:**
- **Threat Landscape:** The evolving spectrum of potential threats that can exploit vulnerabilities.
- **VA Tools:** Software used to detect vulnerabilities, such as Nikto, OWASP ZAP, Nmap, and Nessus.
- **Compliance Standards:** Regulations like HIPAA, GDPR, FedRAMP, and NIST that guide security practices.
### Understanding the VA Framework
A structured VA approach is essential for thorough and effective assessments. Here’s a breakdown of the VA framework:
1. **Scope the Engagement:**
- Define the boundaries and objectives of the assessment.
- Identify the assets and systems in scope.
2. **Perform Risk Assessment and Threat Modeling:**
- Assess potential risks and model threats to understand how they could exploit vulnerabilities.
- Learn about attack vectors and how to defend against them.
3. **Know Your Physical and Logical Assets:**
- Document network diagrams and access controls.
- Understand the organization’s infrastructure, both internally and externally.
4. **Vulnerability Scanning:**
- Conduct authenticated and unauthenticated scans using tools like Burp Suite and Nessus.
- Determine the type of network (large or small) and decide on active or passive scanning.
5. **Validate the Findings:**
- Prioritize high and medium-level findings for immediate remediation.
- Understand that low-level findings might not be urgent but should not be ignored.
6. **Prepare a Remediation Plan:**
- Develop a plan to address identified vulnerabilities in accordance with compliance standards.
- Engage senior management and obtain necessary approvals.
7. **Reporting to Senior Management:**
- Present clear, detailed reports that explain technical terms in simple language.
- Assign risk values and follow up on remediation efforts.
8. **Repeat the Cycle:**
- Conduct VA regularly, especially after major changes in the system or infrastructure.
- Continuously compare data to measure the effectiveness of your VA program.
### Common Organizational Risks
Understanding and mitigating common risks is critical for protecting your organization:
- **Malware Infections**
- **Phishing Attacks**
- **Bring Your Own Device (BYOD) Policies**
- **Insider Threats**
- **DDoS Attacks**
- **Financial and IT Security Risks**
**Key Point:** The weakest link in cybersecurity is often the human element. Increasing knowledge and awareness can significantly reduce risks.
### Advanced VA Techniques
1. **Perform Risk Assessment and Threat Modeling:**
- Watch this practical video on threat modeling: [YouTube Video](https://www.youtube.com/watch?v=fggB70PxhmA)
- Explore attack vectors and understand how different servers interact.
2. **Scan the Assets:**
- Learn about different types of scans (network, host, application, database).
- Use tools like Masscan for port scanning and Burp Suite for web application testing.
3. **Validate and Remediate:**
- Focus on high and medium-level findings.
- Create compensating controls and ensure management sign-off.
4. **Report and Repeat:**
- Use detailed, easy-to-understand reports for senior management.
- Follow up diligently and repeat the assessment cycle regularly.
### Open Source vs. Commercial VA Scanners
- **Open Source:** Customizable but may lack support (e.g., OWASP ZAP).
- **Commercial:** More robust and supported but can be costly (e.g., Qualys, Nessus).
### Scanning the Cloud
- Different cloud services (SaaS, PaaS, IaaS) have unique vulnerabilities.
- Use tools like Qualys for comprehensive cloud security assessments.
### Final Thoughts
Vulnerability assessment is not a one-time task but an ongoing process that evolves with the threat landscape. By staying informed, continuously learning, and applying best practices, you can significantly enhance your organization’s security posture.
For a deeper dive into these concepts and to follow my detailed notes, visit the blog: [Common Security Risks in the Workplace](https://www.ccsinet.com/blog/common-security-risks-workplace/).
### Conclusion
In conclusion, vulnerability assessment is an essential skill for any cybersecurity professional. It involves a thorough understanding of the organization's assets, continuous monitoring, and effective communication with stakeholders. By mastering these techniques, you can protect your organization from a wide range of threats and ensure compliance with critical security standards.
Keep learning, stay curious, and remember that the world of cybersecurity is always evolving. Good luck on your journey! | ashhadali |
1,908,835 | {IL} --> {Intermediate Language} | IL (Intermediate Language) .NET’dagi oraliq til boʻlib, MSIL (Microsoft Intermediate Language) yoki... | 0 | 2024-07-02T11:49:42 | https://dev.to/firdavs090/il-intermediate-language-4bj | dotnet, il, intermediatelanguage, dotnetcore | IL (Intermediate Language) .NET’dagi oraliq til boʻlib, MSIL (Microsoft Intermediate Language) yoki CIL (Common Intermediate Language) nomi bilan ham tanilgan. C# yoki VB.NET kabi tillardagi manba kodi to'g'ridan-to'g'ri mashina kodiga emas, balki birinchi navbatda ILga kompilyatsiya qilinadi va bu uni platformadan mustaqil qiladi.
Arxitektura mustaqilligi: IL kodi CLR (Common Language Runtime) ning tegishli versiyasi o'rnatilgan har qanday platformada ishlashi mumkin. Bu ishlab chiquvchilarga kodni bir marta yozish va uni turli xil operatsion tizimlar va protsessor arxitekturalarida ishga tushirish imkonini beradi.
JIT kompilyatsiyasi: Dastur ishga tushirilganda, IL JIT kompilyatori (Just-In-Time kompilyatori) yordamida mashina kodiga aylantiriladi. Ushbu jarayon maqsadli platformada optimal ishlashni ta'minlash uchun ish vaqtida sodir bo'ladi.
Turning xavfsizligi va modulliligi: IL CLR tomonidan turdagi xavfsizligini tekshirish va kod yaxlitligini ta'minlash uchun ishlatiladigan metama'lumotlarni o'z ichiga oladi. Modullashtirishni qo'llab-quvvatlash ilovani ish vaqtida birga yig'iladigan alohida komponentlarga bo'lish imkonini beradi.
Tilning mosligi: Barcha .NET tillari IL-ga kompilyatsiya qilinganligi sababli ular bir-biri bilan osongina o'zaro ishlashi mumkin. Bu shuni anglatadiki, siz bir xil dasturning turli qismlarini moslik muammosisiz ishlab chiqish uchun turli dasturlash tillaridan foydalanishingiz mumkin.
IL kodning koʻchishi va xavfsizligini taʼminlaydi, turli .NET tillari oʻrtasida oʻzaro ishlashni soddalashtiradi va ishlab chiquvchilarga koʻp qirrali va xavfsiz ilovalar yozish imkonini beradi.
| firdavs090 |
1,908,834 | Rummy Bindaas: Your Ultimate Guide to Winning | Rummy Bindaas is a popular online card game that has captured the attention of many gaming... | 0 | 2024-07-02T11:49:29 | https://dev.to/gserygj/rummy-bindaas-your-ultimate-guide-to-winning-3461 | Rummy Bindaas is a popular online card game that has captured the attention of many gaming enthusiasts. This game blends skill, strategy, and a bit of luck, making it both challenging and enjoyable. Whether you're new to Rummy Bindaas or looking to improve your skills, this guide will provide you with all the essential information you need. We'll cover the basics, strategies, common mistakes, and more to help you become a Rummy Bindaas pro.
## Understanding the Basics of Rummy Bindaas
Rummy Bindaas is an online version of the traditional rummy game, where players aim to form sets and sequences with their cards. The game is played with two to six players, and each player is dealt a specific number of cards. The remaining cards form the draw pile, and the top card is placed face-up to start the discard pile.
The primary goal in Rummy Bindaas is to arrange your cards into valid sets and sequences. A set consists of three or four cards of the same rank but different suits, while a sequence is a consecutive run of three or more cards of the same suit. To win, you need to form at least one pure sequence (a sequence without a joker) and the remaining cards into valid sets or sequences.
Understanding these basics is crucial for playing the game effectively. Once you're familiar with the rules, you can start developing your strategies to improve your chances of winning.
## How to Play Rummy Bindaas Effectively
Playing [Rummy Bindaas](https://rummy-bindaas.in/) effectively requires a combination of knowledge, strategy, and practice. Here’s a step-by-step guide to help you get started:
Dealing the Cards: Each player is dealt a specific number of cards, and the remaining cards form the draw pile. The top card of the draw pile is placed face-up to start the discard pile.
Drawing and Discarding: Players take turns drawing a card from either the draw pile or the discard pile and then discarding one card. The aim is to form valid sets and sequences with your cards.
Forming Sets and Sequences: Focus on creating at least one pure sequence first, as it is mandatory for a valid declaration. Use the remaining cards to form other sequences or sets.
Using Jokers: Jokers can be used to substitute any card in a set or sequence, but they cannot be used in a pure sequence. Use them wisely to complete your combinations.
Declaring the Hand: Once you have formed all the required sets and sequences, you can declare your hand. The game then moves to the verification phase, where the validity of your combinations is checked.
By following these steps and practicing regularly, you can improve your gameplay and become more proficient in Rummy Bindaas.
## Tips to Improve Your Rummy Bindaas Skills
Improving your Rummy Bindaas skills requires a mix of practice and strategic thinking. Here are some tips to help you get better at the game:
Focus on Forming Sequences First: Prioritize forming at least one pure sequence early in the game. This reduces your point count and makes it easier to declare a valid hand.
Observe Opponents' Moves: Pay attention to the cards your opponents pick and discard. This can give you insights into their strategies and help you make better decisions.
Manage High-Value Cards: High-value cards like Kings, Queens, and Jacks carry more points. If they don’t fit into your combinations, discard them early to minimize your point count.
Use Jokers Wisely: Jokers are valuable cards that can help you complete sets and sequences. Use them strategically to form high-value combinations.
Practice Regularly: The more you play, the better you’ll understand the game mechanics and develop your strategies. Use free games or practice modes to hone your skills.
By incorporating these tips into your gameplay, you can improve your skills and increase your chances of winning in Rummy Bindaas.
## Common Mistakes to Avoid in Rummy Bindaas
Even experienced players can make mistakes in Rummy Bindaas. Here are some common pitfalls to avoid:
Holding onto High-Value Cards: Keeping high-value cards for too long can be risky if an opponent declares the game. Discard them if they don’t fit into your combinations.
Ignoring Opponents' Moves: Not paying attention to your opponents’ discards and picks can cost you the game. Stay alert and adapt your strategy based on their moves.
Misusing Jokers: Using jokers in pure sequences or wasting them on low-value sets can be a missed opportunity. Save jokers for critical combinations that need them.
Hasty Declarations: Ensure that all your sets and sequences are valid before declaring. An invalid declaration can result in a significant point penalty.
Avoiding these mistakes can help you play more effectively and increase your chances of winning in Rummy Bindaas.
## Advanced Strategies for Rummy Bindaas
Once you’re comfortable with the basics, you can explore advanced strategies to further improve your game:
Bluffing: Occasionally discard cards that might mislead your opponents about your strategy. This can create confusion and give you an advantage.
Card Counting: Keep track of the cards that have been discarded and picked up. This can help you predict the cards your opponents might be holding.
Balancing Aggression and Patience: Knowing when to be aggressive and when to wait is crucial. Sometimes it’s better to wait for the right card rather than making a hasty move.
Adapting to Different Variations: Rummy Bindaas has various versions, such as Points Rummy, Deals Rummy, and Pool Rummy. Familiarize yourself with these variations to become a versatile player.
By mastering these advanced strategies, you can become a more formidable Rummy Bindaas player and enjoy the game even more.
## Practicing Rummy Bindaas for Improvement
Practice is key to mastering Rummy Bindaas. Here are some tips to help you practice effectively:
Play Regularly: The more you play, the better you'll understand the game mechanics and strategies.
Start with Free Games: Many online platforms offer free Rummy Bindaas games. Use these to practice without the pressure of betting money.
Analyze Your Games: After each game, review your moves and identify areas for improvement. Learn from your mistakes to avoid repeating them.
Learn from Experts: Watch tutorials, read articles, and observe experienced players. Gaining insights from others can enhance your strategies and gameplay.
By practicing regularly and learning from your experiences, you can improve your skills and become a better Rummy Bindaas player.
## Conclusion
Rummy Bindaas is a fascinating card game that combines skill, strategy, and excitement. By understanding the rules, employing smart strategies, and practicing regularly, you can enhance your gameplay and increase your chances of winning. Remember to stay observant, manage your cards wisely, and continuously learn from your experiences. With dedication and practice, you'll become a proficient Rummy Bindaas player in no time.
## Questions and Answers
Q: **What is the main objective of Rummy Bindaas?**
A: The main objective is to form valid sets and sequences with the cards dealt to you and declare your hand before your opponents.
Q: **How many players can play Rummy Bindaas?**
A: Rummy Bindaas can be played by two to six players. | gserygj | |
1,878,362 | app web demo 1 | content of demo | 0 | 2024-06-05T18:12:56 | https://dev.to/byron_loarte_d700d5b9fa29/app-web-demo-1-56ff | webdev | content of demo | byron_loarte_d700d5b9fa29 |
1,908,586 | i made a quick blog cover generator | so i love the minimalism and bright colors, combine those and you get simple covers like these, i... | 0 | 2024-07-02T11:48:48 | https://dev.to/ashercarneiro/i-made-a-quick-blog-cover-generator-2gfb | python, programming, blog, beginners |
- so i love the minimalism and bright colors, combine those and you get simple covers like these, i made this is canva at first..
---
---
- this is kinda perfect for me right now, yet I as any other developer thought "is automating this an option??"🤓
- so my plan here was simple, to make these simple little covers without manual labor, in the first rendition of this i even wanted to add some stickers related to any tags i provided and then display them in bottom right corner, but decided against it cause i got bored trying to handle the subproblems that came with automating sticker download from the internet, yet more on this later.
before we start look at this cool monkey i found:
- so i put out for dimensions of `1600x800` in my mind, which is generally used by most blog sites.
- initially i set out to make it a `cli only` thing, yet decided against it, so if in future i want some new changes without making this again.
- ohhh yes one cool "app" thing this has is, it will automatically translate your sub-title to japanese giving you that _aesthetic_ yet clean look in the cover.
### how it works:
- it uses `tkinter` as it's GUI library duhh
- the "fun" part is the image generation and the automatic translation yk, for this it uses `PIL` or `Python Imaging Library` more specifically `Image, ImageDraw, ImageFont` modules.
- for translation part of that subtitle it was a bit tricky, yet it found a package named `googletrans` which works flawlessly.
- it uses two fonts, one called `opensans-light` for title, and other called `notosansjp` for japanese subtitle.
- now as i told before, i wanted it to work with emoji's yet it didn't cause i had tons of these things called an:
- ill later try getting this text generation and emojis working cause i made this project long time ago and kinda yk forgot..🤦♂️
- yet so, this was a great `side-side` project, made me focus on python after a long time again.
### code:
```
#actually works version
import tkinter as tk
from tkinter import messagebox
from PIL import Image, ImageDraw, ImageFont
from googletrans import Translator
def translate_to_japanese(text):
translator = Translator()
result = translator.translate(text, src='en', dest='ja')
return result.text
def create_blog_cover(title, subtitle):
# Image settings
width, height = 1600, 840
background_color = "#fffb29"
font_path = "./fonts/OpenSans-Light.ttf" # Replace with the path to your font
font_jp = "./fonts/NotoSansJP-VariableFont_wght.ttf" # Replace with the path to your Japanese font
font_size_title = 140 # Increased font size for title
font_size_subtitle = 80 # Increased font size for subtitle
vertical_margin = 40
# Create image with background color
img = Image.new("RGBA", (width, height), background_color)
draw = ImageDraw.Draw(img)
# Load fonts
title_font = ImageFont.truetype(font_path, font_size_title)
subtitle_font = ImageFont.truetype(font_jp, font_size_subtitle)
# Get English and Japanese subtitles
translated_subtitle = translate_to_japanese(subtitle)
# Get text bounding boxes
title_bbox = draw.textbbox((0, 0), title, font=title_font)
subtitle_bbox = draw.textbbox((0, 0), translated_subtitle, font=subtitle_font)
# Extract width and height from bounding boxes
title_width = title_bbox[2] - title_bbox[0]
title_height = title_bbox[3] - title_bbox[1]
subtitle_width = subtitle_bbox[2] - subtitle_bbox[0]
subtitle_height = subtitle_bbox[3] - subtitle_bbox[1]
# Calculate text positions
title_x = (width - title_width) / 2
title_y = (height - title_height - subtitle_height - 20 - vertical_margin) / 2 # Center vertically
subtitle_x = (width - subtitle_width) / 2
subtitle_y = title_y + title_height + 20 + vertical_margin
# Draw text on image
draw.text((title_x, title_y), title, font=title_font, fill="black")
draw.text((subtitle_x, subtitle_y), translated_subtitle, font=subtitle_font, fill="black")
# Save image
output_path = f"./output/{title.replace(' ', '_')}_cover.png"
img.save(output_path, "PNG")
print(f"Cover image saved as {output_path}")
def generate_cover():
title = title_entry.get()
subtitle = subtitle_entry.get()
create_blog_cover(title, subtitle)
messagebox.showinfo("Cover Generated", "Cover image generated successfully!")
# Create a Tkinter window
root = tk.Tk()
root.title("Blog Cover Generator")
# Title label and entry
title_label = tk.Label(root, text="Enter the title:")
title_label.pack()
title_entry = tk.Entry(root, width=50)
title_entry.pack()
# Subtitle label and entry
subtitle_label = tk.Label(root, text="Enter the subtitle:")
subtitle_label.pack()
subtitle_entry = tk.Entry(root, width=50)
subtitle_entry.pack()
# Generate button
generate_button = tk.Button(root, text="Generate Cover", command=generate_cover)
generate_button.pack()
# Run the Tkinter main loop
root.mainloop()
```
- make sure to have `/fonts` [add both fonts .ttf files previously mentioned] and `/output` in your root dir something like:
```
root-dir:
--app.py
--/output
--/fonts
```
### yooo bye have a great day i guess 🤠
| ashercarneiro |
1,908,833 | Data About Data | Hello I am Rahul Thambi, hope you are doing fine and are happy and content | 0 | 2024-07-02T11:48:43 | https://dev.to/abe466cea7b1/data-about-data-m3m | Hello I am Rahul Thambi, hope you are doing fine and are happy and content | abe466cea7b1 | |
1,908,832 | Robinhood Acquires Pluto Capital to Democratize AI-Driven Investing | Robinhood Markets Inc., the popular retail brokerage, has strategically enhanced its platform with... | 0 | 2024-07-02T11:48:03 | https://dev.to/hyscaler/robinhood-acquires-pluto-capital-to-democratize-ai-driven-investing-2oa3 | Robinhood Markets Inc., the popular retail brokerage, has strategically enhanced its platform with advanced AI capabilities by acquiring Pluto Capital Inc. This acquisition marks a significant step towards democratizing access to sophisticated investment strategies and analysis, traditionally reserved for high-net-worth individuals.
## Pluto Capital Brings AI Expertise to Robinhood
Founded by the visionary 24-year-old Jacob Sansbury, [Pluto Capital](https://hyscaler.com/insights/robinhood-acquires-pluto-capital-ai-investing/) has garnered significant attention in the financial services industry for its cutting-edge AI-driven platform. The company's expertise lies in delivering highly personalized investment advice and real-time analytics, empowering investors with data-driven insights to make informed decisions.
## Pluto Capital's Technology to Power Personalized Investing on Robinhood
While the deal's financial terms remain undisclosed, the strategic implications for both companies are undeniable. For Robinhood, the acquisition of Pluto Capital aligns perfectly with its mission to expand beyond its core trading platform and offer a comprehensive suite of financial services. By integrating Pluto Capital's technology, Robinhood aims to provide its vast user base with AI-powered tools to analyze market data, assess individual investment goals, and generate tailored investment recommendations.
"They have built an impressive platform that is highly regarded in the financial services industry," said Mayank Agarwal, Robinhood's vice president of engineering, in a statement. "Their expertise in artificial intelligence coupled with a mission-aligned passion to democratize finance will complement our team's effort to bring AI-powered tools to our customers."
Pluto Capital's founder, Jacob Sansbury, shares Robinhood's vision of making sophisticated investment strategies accessible to everyone. He emphasizes the importance of breaking down barriers and eliminating the exclusivity associated with personalized financial advice.
"There will be no thresholds or no gates," Sansbury declared. "It's very important for us to give access very democratically to everyone."
## Pluto Capital Acquisition to Enhance Robinhood's Product Offerings
The acquisition of Pluto Capital is a testament to Robinhood's commitment to innovation and its dedication to meeting the evolving needs of its customer base. By leveraging Pluto Capital's AI capabilities, Robinhood aims to empower individual investors with the same level of sophistication and personalized guidance typically reserved for institutional investors.
With the integration of Pluto Capital's technology, Robinhood stands to gain a significant competitive advantage. The platform will be able to offer investors real-time market analysis, portfolio optimization, and personalized investment recommendations based on their individual risk tolerance, financial goals, and investment preferences.
Furthermore, the acquisition of Pluto Capital aligns with Robinhood's broader strategy of expanding its product offerings beyond trading. The company has already made inroads into areas such as cryptocurrency, retirement products, and credit cards. By incorporating AI-driven investment advice into its platform, Robinhood can further solidify its position as a comprehensive financial services provider.
## Pluto Capital's Mission Aligns with Robinhood's Growth Strategy
The financial industry has witnessed a growing trend towards AI-powered investment solutions. However, most of these offerings have been targeted towards high-net-worth individuals and institutional investors. Pluto Capital's mission to democratize access to AI-driven investment advice is a groundbreaking approach that has the potential to disrupt the industry.
By acquiring Pluto Capital, Robinhood is not only gaining access to cutting-edge technology but also aligning itself with a powerful mission. The combination of Robinhood's extensive user base and Pluto Capital's AI expertise creates a formidable partnership that could reshape the investment landscape for millions of retail investors.
As the financial services industry continues to evolve, the role of AI is expected to become increasingly prominent. Robinhood's acquisition of Pluto Capital signals a clear commitment to embracing this technological revolution and leveraging it to benefit its customers.
The integration of Pluto Capital's technology into the Robinhood platform is likely to be a gradual process. However, once fully implemented, it has the potential to transform the way millions of investors approach their financial goals. By providing access to personalized investment advice, powered by advanced AI algorithms, Robinhood aims to empower individuals to make more informed investment decisions and achieve financial success.
## Pluto Capital Acquisition to Drive Industry Transformation
The acquisition of Pluto Capital by Robinhood is a significant development in the fintech industry. It highlights the growing importance of AI in financial services and the increasing demand for personalized investment solutions. As the two companies work together to integrate their technologies, the financial landscape is poised for transformation, with the potential to benefit investors of all levels.
Only time will tell the full impact of this acquisition, but it is clear that Robinhood and Pluto Capital are embarking on an ambitious journey to redefine the future of investing.
| suryalok | |
1,908,831 | Paper detailing BitPower Loop’s security | Security Research of BitPower Loop BitPower Loop is a decentralized lending platform based on... | 0 | 2024-07-02T11:46:51 | https://dev.to/asfg_f674197abb5d7428062d/paper-detailing-bitpower-loops-security-5cpf | Security Research of BitPower Loop
BitPower Loop is a decentralized lending platform based on blockchain technology, dedicated to providing users with safe, transparent and efficient financial services. Its core security comes from multi-level technical measures and mechanism design, which ensures the robust operation of the system and the security of user funds. This article will introduce the security of BitPower Loop in detail from five aspects: smart contract security, decentralized management, data and transaction security, fund security and risk control mechanism.
1. Smart Contract Security
Smart contracts are the core components of BitPower Loop, and their codes must undergo strict security audits before deployment. These audits are usually conducted by third-party independent security companies to ensure that there are no vulnerabilities or malicious code in the contract. In addition, the immutability of smart contracts means that once deployed, no one (including the development team) can modify its rules and logic, which fundamentally eliminates the possibility of malicious operations. All operations are automatically executed by smart contracts, avoiding the risk of human intervention and ensuring the fairness and consistency of system operation.
2. Decentralized Management
BitPower Loop eliminates the risks brought by single point failures and central control through decentralized management. The system has no central management agency or owner, and all transactions and operations are jointly verified and recorded by blockchain nodes distributed around the world. This decentralized structure not only improves the system's anti-attack capabilities, but also enhances transparency. Users can publicly view all transaction records, which increases trust in the system.
3. Data and transaction security
BitPower Loop uses advanced encryption technology to protect users' data and transaction information. All data is encrypted during transmission and storage to prevent unauthorized access and data leakage. The consensus mechanism of the blockchain ensures the validity and immutability of each transaction, eliminating the possibility of double payment and forged transactions. In addition, the automated execution of smart contracts also avoids delays and errors caused by human operations, ensuring the real-time and accuracy of transactions.
4. Fund security
The secure storage of user funds is an important feature of BitPower Loop. Funds are stored on the blockchain through smart contracts and maintained by nodes across the entire network. Distributed storage avoids the risk of fund theft caused by centralized storage. In addition, the user's investment returns and shared commissions are automatically allocated to the user's wallet address by the smart contract after the conditions are met, ensuring the timely and accurate arrival of funds.
5. Risk Control Mechanism
BitPower Loop effectively manages lending risks by setting collateral factors and liquidation mechanisms. The collateral factors are independently set according to market liquidity and asset value fluctuations to ensure system stability and lending security. When the value of the borrower's assets falls below a certain threshold, the liquidation mechanism is automatically triggered, ensuring the repayment of the borrower's debt and protecting the interests of the fund provider. In addition, the immutability and automatic execution characteristics of smart contracts further enhance the security and reliability of the system.
Conclusion
BitPower Loop achieves high security and stability through multi-level security measures and mechanism design. Its smart contracts are strictly audited and immutable, decentralized management eliminates single point failure risks, advanced encryption technology protects data and transaction security, distributed storage ensures fund security, and risk control mechanisms manage lending risks. These security features together build a reliable decentralized financial platform that provides users with secure, transparent and efficient financial services.
| asfg_f674197abb5d7428062d | |
1,908,830 | BitPower’s security analysis: | First, BitPower uses advanced encryption algorithms to ensure that data is not tampered with or... | 0 | 2024-07-02T11:46:45 | https://dev.to/xin_wang_e8a515f2373224df/bitpowers-security-analysis-3lki |
First, BitPower uses advanced encryption algorithms to ensure that data is not tampered with or stolen during transmission and storage. All transaction data is processed by hash functions, so that any slight changes will lead to significant changes in the hash value, thereby ensuring data integrity.
Secondly, BitPower uses distributed ledger technology so that each transaction is recorded and verified by multiple nodes. This decentralized structure avoids single point failures and improves the robustness and reliability of the system. At the same time, the application of smart contracts automates the transaction process and reduces the risk of human intervention.
In addition, BitPower also uses multi-signature technology and identity authentication mechanisms to ensure that only authorized users can perform transaction operations. This not only improves the security of the system, but also prevents malicious attacks and illegal access.
In short, BitPower provides a reliable, transparent and efficient electricity trading platform through multi-level security design, providing solid protection for users' data and assets. | xin_wang_e8a515f2373224df | |
1,902,611 | aliakbarsw's Blog | https://aliakbarsw.exblog.jp/31315308/ | 0 | 2024-06-27T13:00:36 | https://dev.to/maqsam/aliakbarsws-blog-4dhp | https://aliakbarsw.exblog.jp/31315308/ | maqsam | |
1,908,829 | Top BBA College In India | Introduction Choosing the right college does make all the difference while pursuing a BBA in India.... | 0 | 2024-07-02T11:45:11 | https://dev.to/priyanka11/top-bba-college-in-india-132i | gniot | **Introduction**
Choosing the right college does make all the difference while pursuing a BBA in India. Since many institutions offer courses in BBA, finding the right one in this regard becomes a problem. The article explains why [Greater Noida Institute of Technology](https://universitychalo.com/college/greater-noida-institute-of-technology-gniot-greater-noida) stands out for aspiring business professionals.
**Why go for a BBA degree?**
A BBA degree opens infinite career opportunities in the corporate world. Furthermore, it is not only about the basic concept of business that one can get by pursuing a BBA; it also consists of leadership skills, strategic thinking, and entrepreneurial capabilities. A BBA program should furnish you with knowledge and ability in the field you aspire to lead: management, marketing, or more.
**Criteria for Selection of Best BBA College**
Choosing the best BBA college depends upon some defining features:
The college is required to be featured by the appropriate Ministry of Education.
Faculty and Quality of Teaching: Inquire whether faculty is experienced and qualified.
Infrastructure and Facilities: The classrooms, libraries, and laboratories must be state of the art.
Placement Records: Strong placement rates and good industrial contacts are essential for a school.
Aveksha Magazine: Spotlight on Greater Noida Institute of Technology GNIOT
**Introduction to GNIOT**
Among the few prestigious institutions in India for a degree in BBA, there goes the not-so-strange abbreviation GNIOT, where vibrant campus life is the real-life excellent and correctly equipped modern amenities located right in the heart of Greater Noida city.
**About the campus and landmark**
GNIOT is located in Greater Noida, and the campus is spread over acres of land with all the modern amenities. The campus has been designed in such a way that it supports an apt learning environment and that would further assist in academic and personal growth.
TASK AIS : Discuss how a college's IT infrastructure
Establishments and Accreditations
GNIOT is one of the affiliate colleges of University Dr. A.P.J. Abdul Kalam Technical University (A.K.T.U.). Approved by the All India Council for Technical Education (A.I.C.T.E.), these infrastructures certify complying with high standards of academics and the relevance of programs under offer.
**Awards and Recognitions**
Spearheaded by many prestigious awards and recognitions for academic excellence and its contribution toward the development of the education fraternity, GNIOT has come a long way in the past.
**Academic Excellence at GNIOT.**
**Faculty who are Qualified and Competent**
The faculty here consists of extraordinary, supremely experienced, and qualified professionals bringing lifelong knowledge, hands-on experience, and industry realism into the classrooms. Their rich experience ensures that the students get a well-rounded education they can use in business effectively.
**Academic Programs and Majors**
GNIOT provides an entire BBA course covering all vital dimensions of business administration. They can also offer specializations based on the fiber they choose to pursue their careers.
**Infrastructure and Facilities at GNIOT**
**Classrooms and Lecture Halls**
This institute also possesses state-of-the-art facilities with well-equipped modern classrooms, as well as high-class lecture auditoriums, which are in themselves technological houses.
**Laboratories and Libraries**
GNIOT's laboratories and libraries are adequate for academic and research work.
**Hostels and Accommodation**
The institute provides good hostel facilities that are spacious and secure, thereby making the campus a home away from home.
**Student Life at GNIOT.**
**Extracurricular Activities**
GNIOT has many activities outside the classroom that are geared toward helping students develop their complete personalities.
**Clubs and Societies**
More than 40 vocational clubs and societies - from entrepreneurship to arts - are functioning at GNIOT.
**Activities, Days and Traditions at School**
It holds various events and festivals that open great opportunities not only for students to demonstrate their abilities but also to interact with other students.
**Placements and Career Support at GNIOT**
**Placement Cell and Activities**
GNIOT has an independent placement cell that supports the students in getting placed through ample promotion by conducting workshops, seminars, and mock interviews to help them be well-prepared for the recruitment process.
**Top Recruiters and Placement Stats**
The institution has an excellent track record of placements since all the best companies across all industries recruit GNIOT students.
**Connect with the Ex-Alumni of the Institute and
Distinguished Graduates**
GNIOT has a balanced and diverse alum network; it further helps graduates do well in their respective fields. Alums also come back with experiences to mentor the present lot.
**Alumni Support and Engagement**
It promotes collaboration and extends support through mentoring and support to students.
**Admission Process of BBA in GNIOT Human Subjects**
It is stipulated that a candidate should have passed his 12th class with a certain minimum percentage to be eligible for entrance into GNIOT's BBA program.
**Application Procedure**
The application process is convenient; you can do it on the official website of the institute.
**Human Reads:**
Prospective students must thus log on, time and again, to the website for updates regarding the admission process.
**Scholarships and Financial Aid**
**Types of Scholarships Available**
GNIOT provides several scholarships to students who excel or are in financial need so that financial constraints do not hamper their education.
Afterwards, the eligibility of applicants and the
Details of the eligibility for the scholarship and application process are available on the institute's website.
**Industry Connections and Collaborations**
Collaboration efforts with the
Summary: GNIOT has had successful collaborations that have helped it create strong industry connections with industry leaders, serving as a highly beneficial advantage to the students.
**Internship Opportunities**
These are very often translated into internship opportunities, which allow the students the chance to gain practical work experience in the selected program. Compare with Other Top BBA Colleges in India What Differentiates GNIOT. What makes GNIOT different from the rest is its highly qualified faculty, state-of-the-art infrastructure, sound placement record, and pulsating campus life. Comparative analysis Compared with other leading BBA colleges, GNIOT has the right balance of theory and practical experience in its curriculum. Conclusion Right from the correct college for a BBA program to the right decision that can shape a person's future, the Greater Noida Institute of Technology (GNIOT) is a fine blend of excellence. Not leaving any stone unturned, either in academics industry exposure, or personal development, each is essential in the career cruise of students aspiring to become business professionals. [Universitychalo](https://universitychalo.com) is a search engine where we search for college details, etc.
| priyanka11 |
1,908,783 | NodeJS - Usando setTimeout para não estourar a memória | Recentemente me deparei com um problema em que eu estava precisando ler um array gigante e escrever o... | 0 | 2024-07-02T11:44:28 | https://dev.to/gustavosabel/nodejs-usando-settimeout-para-nao-estourar-a-memoria-5co1 | Recentemente me deparei com um problema em que eu estava precisando ler um array gigante e escrever o conteúdo dele em um arquivo, mas esse isso estava causando um erro de memória. Então resolvi escrever este pequeno artigo demonstrando o problema e como usei o `setTimeout` para resolver o problema.
Código fonte aqui dos exemplos aqui: https://github.com/GustavoSabel/big-file-writer
### Problema
Para demonstrar o problema, primeiro criei um Repository que simula uma consulta em um banco de dados que traz uma lista de 100 milhões de strings de 10 caracteres, considerando que caractere tem 1 byte, no final deve gerar um array de quase 1GB. (*Fiz retornando um Iterable, pois achei que ficaria mais simples e rápido de testar*)
```tsx
export class Repository {
static *getBigArray(): Iterable<string> {
for (let i = 0; i < 100_000_000; i++) {
yield i.toString().padStart(9, "0") + "\n";
}
}
}
```
E esse é o código que lê a lista e salva em um arquivo
```tsx
const bigArray = Repository.getBigArray();
const file = await fs.promises.open("output.txt", "w");
const streamWriter = file.createWriteStream({ encoding: "utf-8" });
for (const line of bigArray) {
streamWriter.write(line);
}
```
Ao executar esse código, o seguinte erro é gerado:
> FATAL ERROR: Reached heap limit Allocation failed - JavaScript heap out of memory
>
Isso acontece pois o NodeJS roda em apenas uma thread e não consegue escrever em disco ao mesmo tempo que está rodando o `for`. Ou seja, o arquivo só será escrito do disco quando todas as 100 milhões de linhas forem escritas no `streamWriter`, e tudo isso está ficando em memória e consumindo 1 GB de ram. O limite padrão de memória do NodeJS é 512MB e por isso esse erro está ocorrendo.
### Solução
Esse código é o que resolveu o problema:
```tsx
const bigArray = Api.getBigArray();
const file = await fs.promises.open("output.txt", "w");
const streamWriter = file.createWriteStream({ encoding: "utf-8" });
let pendentLines = 0;
for (const line of bigArray) {
streamWriter.write(line);
if (pendentLines++ === 100_000) {
pendentLines = 0;
await new Promise(resolve => setTimeout(resolve, 0)); // Faz a magia
}
}
```
O ponto principal da alteração foi a linha do `await new Promise(resolve => setTimeout(resolve, 0))`. Essa linha, que vai ser executada a cada 100 mil ciclos, faz com que as operações de escrita em disco que estão pendentes, possam ser executadas. Isso acontece pois as operações de escrita estavam aguardando na fila do event loop para serem executadas, e o `setTimeout` fez com que a operação que está em execução fosse colocada no fim da fila do event loop. Então o `for` só vai continuar quando todas as operações que estava pendentes no event loop sejam concluídas.
Resumindo, essa nova linha faz com que tudo que estava pendente seja escrito em disco, liberando a memória fazendo com que o programa consuma no máximo 1MB de memória em vez de 1GB.
### Observação importante
O ideal mesmo para a solução seria que o `Repository.getBigArray()` retornasse uma stream do banco de dados e dessa forma não seria necessário o `setTimeout`. Porém esse código foi usado em uma ferramenta interna e essa solução foi o suficiente.
### Conclusão
O uso do `setTimeout(resolve, 0)` não é muito comum no dia a dia, e a princípio parece ser inútil pois ele apenas faz que o código atual seja executado logo em seguida, mas esse foi um exemplo de como o ele pode ser usado para “liberar” o event loop para que não fique travado em uma única operação pesada e dessa forma otimizar o consumo de memória da aplicação. | gustavosabel | |
1,908,828 | The Future of Software Development: Emerging Trends to Watch in 2024 | 1. Artificial Intelligence and Machine Learning Artificial Intelligence (AI) and Machine Learning... | 0 | 2024-07-02T11:43:54 | https://dev.to/wis_branding_84cec990b812/the-future-of-software-development-emerging-trends-to-watch-in-2024-fkk | javascript, webdev, beginners, programming | **1. Artificial Intelligence and Machine Learning**
Artificial Intelligence (AI) and Machine Learning (ML) continue to revolutionize software development. These technologies enable the creation of smarter, more efficient applications capable of learning and adapting over time. In 2024, we can expect to see:
-
Enhanced Automation: AI and ML are automating repetitive tasks, allowing developers to focus on more complex and creative aspects of software development. From code generation to bug detection, automation is streamlining workflows and increasing productivity.
-
Predictive Analytics: AI-driven analytics are providing deeper insights into user behavior, helping developers create more personalized and engaging experiences. Predictive models are also improving decision-making processes by forecasting trends and identifying potential issues before they arise.
-
Natural Language Processing (NLP): Advances in NLP are enhancing human-computer interaction, making applications more intuitive and user-friendly. Chatbots, virtual assistants, and voice-activated systems are becoming more sophisticated, offering seamless user experiences.
**2. Blockchain Technology**
Blockchain technology, best known for powering cryptocurrencies like Bitcoin, is finding new applications in software development. Its decentralized and secure nature is driving innovation across various sectors. Key trends in blockchain for 2024 include:
-
Smart Contracts: Blockchain-based smart contracts are automating complex transactions and agreements without the need for intermediaries. This technology is enhancing security, reducing costs, and increasing efficiency in industries such as finance, real estate, and supply chain management.
-
Decentralized Applications (DApps): DApps are gaining traction as they offer increased transparency, security, and user control. These applications are built on blockchain networks and operate without a central authority, providing users with greater trust and autonomy.
-
Blockchain-as-a-Service (BaaS): As more businesses recognize the benefits of blockchain, BaaS platforms are emerging to simplify the integration and deployment of blockchain solutions. These platforms offer tools and infrastructure to help companies leverage blockchain technology without extensive expertise.
**3. Edge Computing**
Edge computing is transforming the way data is processed and analyzed. By moving computation closer to the data source, edge computing reduces latency and improves performance. In 2024, the impact of edge computing will be significant:
-
Faster Data Processing: Edge computing enables real-time data processing, which is crucial for applications requiring immediate responses, such as autonomous vehicles, industrial automation, and IoT devices.
-
Reduced Bandwidth Usage: By processing data locally, edge computing minimizes the need to transmit large volumes of data to centralized servers. This reduces bandwidth usage and lowers operational costs.
-
Enhanced Security and Privacy: Edge computing enhances data security by keeping sensitive information closer to the source. This reduces the risk of data breaches and ensures compliance with data protection regulations.
**4. Quantum Computing**
Quantum computing, still in its early stages, holds immense potential for software development. Quantum computers can solve complex problems exponentially faster than classical computers, opening up new possibilities for various industries. Key areas to watch in 2024 include:
-
Optimization and Simulation: Quantum computing excels at solving optimization problems and running simulations. This capability is valuable in fields like logistics, pharmaceuticals, and financial modeling, where complex calculations are required.
-
Cryptography: Quantum computing poses both challenges and opportunities for cryptography. While it has the potential to break current encryption methods, it also enables the development of quantum-resistant algorithms, enhancing data security.
-
Artificial Intelligence: Quantum computing can accelerate AI and ML processes, allowing for more sophisticated algorithms and models. This synergy between quantum computing and AI will drive advancements in fields like drug discovery, climate modeling, and materials science.
**Conclusion**
The future of software development is being shaped by advancements in artificial intelligence, blockchain, edge computing, quantum computing, and low-code/no-code platforms. These emerging trends are driving innovation, improving efficiency, and opening up new possibilities across various industries. As we move into 2024, staying informed and adapting to these trends will be crucial for businesses and developers looking to stay ahead in the ever-evolving tech landscape. Embracing these technologies will not only enhance the development process but also create opportunities for groundbreaking solutions and transformative applications. check more about [software development and design
](https://www.wisbato.com/)
| wis_branding_84cec990b812 |
1,908,820 | Performance in managing tree-like structures in multiplayer front-end apps | My wife, a full-stack designer, often asks for my help with CSS whenever a component breaks or she... | 0 | 2024-07-02T11:43:20 | https://dev.to/tnipri/performance-in-managing-tree-like-structures-in-multiplayer-front-end-apps-15h4 | frontend, performance, javascript, webdev | My wife, a full-stack designer, often asks for my help with CSS whenever a component breaks or she needs to adjust styles or properties. One day she mentioned a product designer struggling to fix a layout issue that occurred when the screen was enlarged. She couldn’t understand why the designer couldn’t make the change himself. This incident inspired us to create [Jux](https://www.jux.io), a code-based product design tool that integrates with the developer’s codebase, allowing designers to design real products instead of just static design artifacts (mockups and prototypes).
[Jux](https://www.jux.io) is a multiplayer, DOM-based design tool where all the elements are constructed from native browser elements. The output is production-ready UI components and compositions, ready to be used immediately in your codebase.
## What are we trying to solve?
The DOM is hierarchical by its nature. One key challenge in building our product is data representation and how we communicate with it. We built a DOM-based canvas (think of your typical vector-based design tool, but with real and complex web elements like select boxes, dropdowns, and complete pages).
- Users interact with the canvas… a lot! They change positions, dimensions, colors, etc. This means we are doing LOTS of data updates. It also means searching for the desired node in the tree for each update. **As the tree grows, search performance degrades.**
- Multiplayer and collaboration support — changes in one client should be immediately reflected in another. While conflict resolution is handled by CRDT on the server side, connected clients need to update their own state by searching for and updating or creating the affected node.
- Browsers run most tasks on the main thread. When the main thread is busy executing our JavaScript code or performing a rendering cycle, the display does not update or respond to user interaction, leading to unresponsive or frozen pages. In other words — **a poor user experience.**
So considering this complexity, how can we represent tree structures in our UI state?
Node-cluttered canvas in Jux
There are plenty of articles and tutorials on tree-like data structures, their different types, and how to use / search them. What I was lacking was practical examples on how to optimize them for our frontend application considering our unique use cases. This shares some of our research.
## Optimizing Tree-like Data Structures for Frontend Performance
As a company committed to delivering seamless user experiences, performance is paramount in our development ethos. Efficiently managing hierarchical data structures like trees is crucial for optimal performance. One powerful technique for optimizing tree structures is normalization. It involves organizing data in a flat, denormalized format, allowing for easier retrieval and manipulation. Below, I’ll discuss why normalization is essential for front-end applications dealing with tree structures and how it can significantly improve performance.
## The Challenge of Tree Structures
Tree structures inherently pose challenges for front-end developers due to their hierarchical nature. Rendering a tree often involves deeply nested data structures, leading to performance issues, especially as the tree size grows. Manipulating and updating such structures can become computationally expensive, resulting in sluggish user experiences.
Consider a file explorer component that displays a hierarchical view of directories and files. Each directory can contain subdirectories and files, forming a tree structure. Rendering this tree directly from nested data can result in repetitive computations and re-rendering unaffected parts of the tree upon updates.
## The Solution: Normalization
Normalization addresses these challenges by restructuring the data into a flat format, using unique identifiers to establish relationships between entities. Instead of nesting data, normalization involves storing each entity (node) separately and referencing its parent and children via identifiers. This approach facilitates more efficient data retrieval and updates, leading to improved performance.
Let’s illustrate this with a simplified example of a tree:
```
const tree = [
{
id: 1,
name: 'Root',
parentId: null,
children: [
{
id: 2,
name: 'Child 1',
parentId: 1,
children: [
{
id: 3,
name: 'Grandchild 1',
parentId: 2,
children: []
},
{
id: 4,
name: 'Grandchild 2',
parentId: 2,
children: []
}
]
},
{
id: 5,
name: 'Child 2',
parentId: 1,
children: []
}
]
}
];
```
To normalize this structure, we’ll break it into two parts: a dictionary of nodes and a list of top-level node IDs. Each node will reference its children by their IDs rather than embedding them directly.
```
const normalizedData = {
nodes: {
1: { id: 1, name: 'Root', parentId: null, children: [2, 5] },
2: { id: 2, name: 'Child 1', parentId: 1, children: [3, 4] },
3: { id: 3, name: 'Grandchild 1', parentId: 2, children: [] },
4: { id: 4, name: 'Grandchild 2', parentId: 2, children: [] },
5: { id: 5, name: 'Child 2', parentId: 1, children: [] }
},
rootIds: [1]
};
```
## Benefits of Normalization for Frontend Applications
1. **Quick updates:** Accessing a node by its ID is very fast with a normalized structure since you can directly reference it in a dictionary (hash map) rather than traversing a nested structure. This structure makes it easy to create, read, update or delete new records; all operations will take place in a linear or constant manner.
2. **Filtering and Querying:** Filtering nodes based on certain criteria (e.g., all nodes with a specific parentId) is more efficient with a normalized structure.
3. **Readability:** Organizing data in an easy-to-understand manner facilitates efficient processing and retrieval with straightforward logic.
4. **Optimized Rendering:** Normalizing tree structures allows for more efficient rendering algorithms. Instead of traversing deeply nested data, rendering components can directly access and display flattened data, resulting in faster rendering times.
5. **Simplified State Management:** Managing state in frontend applications becomes more manageable with normalized data structures. Libraries like Zustand can efficiently handle normalized data, simplifying state updates and ensuring consistency across components.
6. **Enhanced Performance:** By reducing unnecessary computations and minimizing re-renders, normalization significantly enhances the overall performance of frontend applications. Users experience smoother interactions, especially when dealing with large or dynamically changing tree structures.
7. **Large Data Sets:** Normalized structures handle large data sets better since operations on nodes are localized to specific parts of the data rather than traversing potentially large nested structures.
## The Results
After implementing normalization, we saw immediate performance improvements. Even with a large number of elements on the canvas, the application remained responsive and fast — a direct result of this architectural change.
Let’s conduct a performance test to compare the search and update time of nodes between normalized and nested data structures using a simulated React code. This code generates a tree structure with 1k, 10k and 100k random nodes with random order (limited to 10 children per node, and a total tree depth of 14):
```
1k nodes:
Nested Tree Search Time: 1.1000000 ms
Normalized Tree Search Time: 0.0000000 ms
Nested Tree Update Time: 0.1000000 ms
Normalized Tree Update Time: 0.0000000 ms
10k nodes:
Nested Tree Search Time: 1.0999999 ms
Normalized Tree Search Time: 0.0000000 ms
Nested Tree Update Time: 0.3000000 ms
Normalized Tree Update Time: 0.0000000 ms
100k nodes:
Nested Tree Search Time: 3.5999999 ms
Normalized Tree Search Time: 0.0000000 ms
Nested Tree Update Time: 1.3999999 ms
Normalized Tree Update Time: 0.0000000 ms
```
As you can see — significant optimization improvements, and this is in addition to framework-specific issues such as reactivity and state management (not covered in this blog post).
## Simplicity is Key
Throughout my career, I’ve learned that the key to building high-performance applications lies in simplicity. It’s easy to get caught up in the excitement of big ideas and elegant solutions, but often, the most complicated solutions are not the best.
I’ve seen developers, including myself, fall into the trap of creating overly complex code, thinking it showcases our skills. However, I’ve come to realize that this approach is self-deception. The real magic of code lies in its simplicity and maintainability. We should write code not just for ourselves, but for the next person who will work on it. By keeping things simple and easy to understand, we can create applications that are maintainable, scalable, and performant.
## Conclusion
Normalizing tree structures in frontend applications is a powerful technique for improving performance and scalability. By restructuring hierarchical data into a flat format, developers can optimize rendering, simplify state management, and enhance overall application performance.
At [Jux](https://www.jux.io), techniques like normalization are just one way we’re pushing the boundaries of what’s possible in design tools — while still always keeping our focus on simplicity. | tnipri |
1,905,684 | Tropical.rb - Os desafios de organizar uma conferência de Ruby/Rails - [PT-BR] | English version Introdução Meu objetivo com este relato é ajudar outros organizadores de... | 0 | 2024-07-02T11:41:03 | https://dev.to/cirdes/tropicalrb-os-desafios-de-organizar-uma-conferencia-de-rubyrails-pt-br-90p | rails, ruby, conference | [English version](https://dev.to/cirdes/tropicalrb-the-challenges-of-organizing-a-rubyrails-conference-en-ofk)
## Introdução
Meu objetivo com este relato é ajudar outros organizadores de eventos, contando um pouco sobre o desafio de organizar o [Tropical.rb - The Latin America Rails Conference](https://www.tropicalrb.com/).
Para quem não participou, esse vídeo destaca alguns momentos da conferência:
{% embed https://www.youtube.com/embed/QYACqPiMFD4?si=x1oub0SbKlJlzy6g %}
Eventos de tecnologia fazem parte da minha vida há bastante tempo. Minha primeira empresa foi uma startup de eventos, a [Eventick](https://pt.wikipedia.org/wiki/Eventick). Por conta dela, tive a oportunidade de participar de, ou até mesmo ajudar no credenciamento de, diversos eventos. Alguns exemplos são: [BrazilJS](https://conf.braziljs.org/), [AgileTrends](https://agiletrendsbr.com/), [FrontInSampa](https://frontinsampa.com.br/), [FrontInVale](https://frontinvale.com.br/), [FrontInBh](https://www.frontinbh.com.br/), [RubyConf](https://www.rubyconf.com.br/) e alguns eventos internacionais como a [Rails World](https://rubyonrails.org/world/2023), [DPW](https://conference.dpw.ai/) e a [Waza do Heroku](https://blog.heroku.com/waza-2013). Inclusive, foi na Waza em 2013 que conheci o [Matz](https://en.wikipedia.org/wiki/Yukihiro_Matsumoto), criador do Ruby. :heart:
## O Início do Plano
O Tropical.rb já existia, e sua última edição havia acontecido em 2015. Ele começou como um evento local organizado pelo grupo de usuários Ruby de Recife, o [FrevoOnRails](http://frevoonrails.com.br/). Na época, o evento se chamava AbrilProRuby. Eu organizei a segunda edição regional do evento e ajudei na primeira edição nacional, que foi idealizada por [Lailson Bandeira](https://www.linkedin.com/in/lailsonbm/) e também teve [Thiago Diniz](https://www.linkedin.com/in/thiagodiniz/) como organizador.
No começo de 2023, eu estava sentindo falta de eventos de Ruby/Rails no Brasil. Os meetups regionais não estavam acontecendo com regularidade, e ouvia-se falar muito pouco sobre Ruby. Os grandes responsáveis por divulgar o Rails no Brasil, [Fábio Akita](https://x.com/AkitaOnRails) e a [Plataformatec](https://plataformatec.com/), já não estavam mais focados em Ruby. Estava claro para mim que era preciso retomar os eventos.
O primeiro grande desafio de organizar um evento é que a maioria deles é deficitária. A última edição do Tropical.rb, em 2015, teve um prejuízo, em valores atuais, de R$ 250.000,00 (USD 50k). A RubyConf, a TheConf, a FrontInSampa e tantas outras conferências deram prejuízo, e muitas vezes vi esse custo recaindo sobre o organizador.
Quando levei essa ideia para o meu sócio, [Leo Cavalcanti](https://www.linkedin.com/in/leozaca/), ele topou imediatamente. Como ele gosta de dizer, a [Linkana](https://leozaca.substack.com/p/uma-defesa-do-lifestyle-business) é uma [startup independente](https://leozaca.substack.com/p/uma-defesa-do-lifestyle-business) e lucrativa. Decidimos nos arriscar e organizar uma conferência, mesmo que nossos clientes não fossem desenvolvedores, pois sabíamos que era algo importante a ser feito. Com isso, a Linkana assumiu o risco financeiro do evento.
A primeira pessoa que procurei para me ajudar foi [Rafael França](https://x.com/rafaelfranca), membro do Rails Core e amigo de longa data.
França topou imediatamente ajudar a organizar o evento, e isso fez toda a diferença. Pela rede de contatos dele e pela credibilidade que a conferência ganhou ao ser co-organizada por um membro do Rails Core. Alguns meses depois, [Ju Dias](https://x.com/juuh42dias) e [Débora Fernandes](https://www.linkedin.com/in/debborafernandess/) se juntaram ao time.
## Buscando Palestrantes
Boa parte da experiência de uma conferência são as pessoas que você conhece ou reencontra. Nos melhores eventos que já participei, além do networking, aprendi muito com as palestras. Para conseguir a atenção dos keynotes mais famosos, sabia que precisava convidá-los pessoalmente para o evento. Fui um dos "sortudos" que conseguiu comprar um dos ingressos da primeira edição do Rails World em Amsterdã.
Encontrei pessoalmente boa parte dos palestrantes que vieram de fora. Preparei um kit com camisa, havaianas, cachaça e uma bolsa de praia. Também levei várias camisas que distribuí para os brasileiros e os membros do Rails Core. O evento foi "invadido" pelo Tropical.rb, e todo mundo estava se perguntando o que era essa camisa roxa. Até o DHH ganhou a dele:
Com a divulgação do evento em https://rubyconferences.org/, nas newsletters e no Twitter, conseguimos mais de 100 propostas de palestras. Outro ponto importante para a conferência foi que definimos bem o nosso foco. Assim como na Rails World, queríamos falar sobre o futuro do framework e sobre startups. Ter o Rafael França como um dos revisores foi muito importante; ele nos dizia o que estava ou não alinhado com o Rails 8.
Para que os palestrantes se sentissem em casa, pensamos em vários detalhes. Para os palestrantes que não falavam português, eu e os outros organizadores fomos pessoalmente buscá-los no aeroporto e levá-los para o hotel. O hotel que escolhemos era uma rede internacional, que os palestrantes já conheciam e ficava próxima ao local do evento. Thiago Diniz ficou responsável por cuidar de todos os palestrantes durante todo o período de estadia deles.
Boa parte das empresas de fora possuem política de arcar com custos de viagem e hospedagem caso seus funcionários sejam selecionados para palestrar. Isso ajuda muito, já que fica inviável para o evento arcar com passagem e hospedagem. Para os demais, pagamos os custos de hospedagem.
## A Venda dos Ingressos
Para vender os ingressos, inspirei-me no Rails World, que focou bastante na divulgação antes de iniciar as vendas. Isso deu muito certo para nós também. Com os keynotes confirmados, colocamos um site no ar para que as pessoas pudessem manifestar interesse em participar, e comecei a participar de [meetups](https://www.youtube.com/watch?v=4_EA11hiewI), [podcasts](https://www.hipsters.tech/ecossistema-ruby-on-rails-hipsters-ponto-tech-393/) e [lives no YouTube](https://www.youtube.com/watch?v=W5j1F7l17C0&t=1s). Reativamos nosso [LinkedIn](https://www.linkedin.com/company/tropicalrb/) e [Twitter](https://x.com/tropical_rb).
Com o público já aguardando, abrimos as vendas e, em menos de 3 dias, todos os ingressos esgotaram. Entre ingressos e patrocinadores, tivemos um público de aproximadamente 400 pessoas.
## Busca por Patrocinadores
Pelo fato de nossa equipe ser enxuta, acabamos não paralelizando as iniciativas, e a busca por patrocinadores ficou por último. Acontece que isso foi, acidentalmente, a melhor coisa que fizemos. Esse era o meu maior desafio de longe, tanto porque não sou um vendedor quanto pelo histórico do evento. Por ter ficado por último, quando chegamos para falar com potenciais patrocinadores, já tínhamos os keynotes anunciados e todos os ingressos para o público geral esgotados.
As empresas que patrocinam eventos não têm recursos ilimitados. Elas precisam escolher quais eventos vão poder patrocinar. Fizemos um documento bem elaborado para listar tudo que fazia parte do pacote e mapeamos diversas empresas que utilizam Ruby on Rails. Com um bom material de patrocínio, ingressos esgotados e keynotes confirmados, acabou sendo mais fácil do que eu esperava. Diferente da última edição, as empresas que utilizam Rails estão bem mais maduras e tem faltado profissionais de Ruby no mercado; elas querem associar a marca ao evento para consolidar sua marca empregadora. Também conseguimos apoio de empresas que vendem para desenvolvedores e outras de fora do país que estão interessadas em contratar no Brasil. No final, conseguimos fechar as contas do evento no azul.
Outro fator importante é que abrimos um CNPJ de uma associação sem fins lucrativos, a "Rubi nos Trilhos do Brasil", para que pudéssemos emitir nota fiscal para os patrocinadores, ao mesmo tempo que os recursos seriam destinados única e exclusivamente para o evento. Nenhum organizador ou voluntário recebeu nada do evento. No final, tivemos 19 patrocinadores incríveis!
## O Dia do Evento
A escolha do local e do formato foi crucial. Eu queria associar o Rails às startups, por isso escolhi o Cubo Itaú, o maior hub de startups da América Latina. Um auditório moderno com excelente infraestrutura.
Um dos desafios foi acumular a responsabilidade de co-apresentador do evento. Para enfrentar esse desafio, a [Larissa Santana](https://www.linkedin.com/in/larissasantana/) e a consultoria Calor me ajudaram muito.
Além das palestras tradicionais, tivemos algumas iniciativas diferentes.
A primeira delas foi um painel com quatro fundadores das maiores empresas brasileiras que utilizam Rails. [Wagner Narde](https://www.linkedin.com/in/wagnernarde/) da Vindi, [Carlos Brando](https://www.linkedin.com/in/carlosbrando/) da Enjoei, [Thiago Scalone](https://www.linkedin.com/in/scalone/) da CloudWalk e o [Bruno Ghisi](https://www.linkedin.com/in/brunoghisi/) da RD Station. Muitos desenvolvedores sonham em empreender, e eu queria que as pessoas percebessem que o Rails continua sendo um dos melhores frameworks para iniciar uma startup.
O outro painel foi sobre a Rails Foundation. A criação da fundação foi uma das iniciativas mais importantes do Rails para a comunidade. Eu acreditava que as pessoas da América Latina precisavam conhecer a fundação, ao mesmo tempo que a fundação precisava entender melhor as demandas e necessidades dos desenvolvedores Ruby que estão fora do eixo América do Norte/Europa. Foi incrível contar com a participação de [Amanda Perino](https://www.linkedin.com/in/amandabrookeperino/), Diretora Executiva da Rails Foundation, [Bruno Miranda](https://www.linkedin.com/in/brunomiranda/), brasileiro e membro do conselho da Rails Foundation, e [Robby Russel](https://www.linkedin.com/in/robbyrussell/) como mediador das perguntas.
Como um dos objetivos do evento era fortalecer a comunidade, todos os organizadores de meetups de Ruby/Rails do Brasil foram homenageados no palco, juntamente com Fábio Akita, responsável por criar e organizar a RubyConfBR ao longo de vários anos. Além disso, tivemos a oportunidade de homenagear Paulo Fagiani, organizador do histórico evento Oxente Rails, que infelizmente nos deixou alguns meses depois.
Por fim, junto com a Le Wagon, selecionamos desenvolvedores juniors recém-formados no bootcamp para criar um [catálogo de empresas](https://empresas.ruby.com.br/) que utilizam Ruby on Rails no Brasil, apresentado no palco do evento. Muitos membros da equipe conseguiram seu primeiro emprego durante o processo.
Essas quatro iniciativas certamente tornaram o Tropical.rb ainda mais único.
## Por fim
Organizar eventos de tecnologia trata-se de doar o que você tem de mais precioso: seu tempo. É crucial que sua motivação esteja no lugar certo. Não se trata de ROI (Retorno sobre o Investimento), não é sobre marketing de carreira. Trata-se de contribuir para algo em que você acredita.
Links para as palestras: [Assista às palestras aqui](https://www.youtube.com/@tropicalrb)
Links para as fotos: [Veja as fotos aqui](https://photos.app.goo.gl/hkJZ3xbD1pajNQ7P9)
Esperamos todos vocês em 2025!
Se quiserem discutir sobre organização de eventos, estou disponível no [Linkedin](https://www.linkedin.com/in/cirdesh/) e [Twitter](https://x.com/cirdesh). | cirdes |
1,908,826 | A gentle introduction to print statement debugging | This blog was originally published on Substack. Subscribe to ‘Letters to New Coders’ to receive free... | 0 | 2024-07-02T11:40:34 | https://dev.to/fahimulhaq/a-gentle-introduction-to-print-statement-debugging-393j | This [blog](https://www.letterstocoders.com/p/a-gentle-introduction-to-print-statement) was originally published on Substack. Subscribe to ‘[Letters to New Coders](https://www.letterstocoders.com/)’ to receive free weekly posts.
If writing code is day, then debugging is night. Dealing with bugs is non-negotiable in coding. In fact, the most skilled programmers are also the best at debugging.
Today, I want to give a gentle introduction to one of the most effective debugging strategies that will be relevant throughout your career: print statement debugging.
If you have already written an entire program, then you’re ready for this tutorial. If you haven’t, feel free to join us and get a sneak peek of this skill that’s waiting for you later in your learning journey.
## What is print statement debugging?
Print statement debugging is a fantastic way to trace the behavior of a program to understand where an error occurred, and how to fix it. (Another perk: it requires no additional tools or complex setups.)
This debugging technique involves placing print statements at various positions in your program.
These print statements help elucidate your code’s behavior by generating outputs that reflect:
- The values of variables
- Flow of execution
- The state of your program at various points
These print statements are additional lines that you write into your program. If you owned a coffee shop, you can think of print statements as shift supervisors who are present at the shop, keeping you updated on the status of operations.
Of course, print statements are not placed randomly throughout code. You should place statements strategically at **key areas where the state changes or important operations occur**, such as:
- Before and after loops
- Inside conditional blocks
- At the beginning, middle, and end of functions
For example, suppose we have written a program that calculates the sum of numbers in a list but it’s not returning the expected result. Here’s the code:
We can add a print statement in the code to help us notice what’s happening in the program.
We can add a print statement in the code to help us notice what’s happening in the program.
This added print statement will show us the value of the number being added and the intermediate value of the total. This helps us trace the execution and verify if the logic inside the loop is correct.
## Using print statements for debugging
In its simplest form, the steps to using print statements for debugging are:
1. Identifying key areas
2. Inserting print statements
3. Running the program
4. Analyzing the output
5. Identifying the issue
6. Fixing the bug
7. Removing the print statement
Here are some best practices to keep in mind:
## Use descriptive messages
Instead of just printing variable values, include context about what those values represent. For example:
## Track execution flow
Use print statements to trace the flow, especially in complex logic with multiple branches. For example:
## Be strategic (don’t overdo it!)
Overdoing print statements can affect the performance of your application — especially when you’re working in the professional environment.
In professional development, you’ll be working on massive codebases where performance is likely a priority. Instead of using print statements, you may be using a related technique called logging, however you’ll still need to decide where to place logging to help monitor a program. Figuring out exactly where to put print statements without overdoing is not so much a science as it is an art. But the more you do it, the better your judgment will get.
## Example: Code with a logical error
Let’s try with an example.
Suppose we have a function that checks if a list of numbers contains any even number(s). The code is intended to return True if there is at least one even number and False otherwise.
However, there is a logical error:
Expected output: True
Actual output: False
To debug this, we can **add print statements** to understand the flow of execution and the values being checked:
## Analyzing the output
By running the modified code, we get the following output:
The output shows that the function returns False after checking only the first number, 1. This indicates that the else branch is causing an immediate return of False, even if there might be even numbers later in the list.
## Corrected code
To fix this logical error, we should only return False after checking all numbers in the list:
## Corrected output
Now, the output correctly identifies that there is an even number in the list:
Using print statements, we traced the execution flow and identified that the function was returning False. This allowed us to correct the logic and ensure the function worked as required.
## Becoming a professional debugger
Becoming a developer means becoming a debugger too. And print statements are a great way to start getting methodical with debugging. Once you’ve understood print statements and strengthened your debugging skills, you’ll be able to move on to logging for the professional development environment.
Either way, the best way to grow your debugging skills is by making mistakes and getting your hands dirty with debugging.
If you’d like to learn more about debugging, we’ve launched a great beginner-friendly course that covers various debugging strategies: [Mastering Debugging: Techniques for Efficient Code Diagnosis](https://www.educative.io/courses/mastering-debugging-techniques-for-eficient-code-diagnosis).
Happy debugging!
– Fahim
| fahimulhaq | |
1,908,818 | Tropical.rb - The Challenges of Organizing a Ruby/Rails Conference [EN] | Versão em Português Introduction My goal with this post is to help other event organizers... | 0 | 2024-07-02T11:40:29 | https://dev.to/cirdes/tropicalrb-the-challenges-of-organizing-a-rubyrails-conference-en-ofk | ruby, rails, conference | [Versão em Português](https://dev.to/cirdes/tropicalrb-os-desafios-de-organizar-uma-conferencia-de-rubyrails-pt-br-90p)
## Introduction
My goal with this post is to help other event organizers by sharing a bit about the challenge of organizing the [Tropical.rb - The Latin America Rails Conference](https://www.tropicalrb.com/).
For those who didn't attend, this video highlights some moments from the conference:
{% embed https://www.youtube.com/embed/QYACqPiMFD4?si=x1oub0SbKlJlzy6g %}
Technology events have been a part of my life for quite some time. My first company was an event startup, [Eventick](https://pt.wikipedia.org/wiki/Eventick). Because of it, I had the opportunity to participate in, or even help with the accreditation of, several events. Some examples are: [BrazilJS](https://conf.braziljs.org/), [AgileTrends](https://agiletrendsbr.com/), [FrontInSampa](https://frontinsampa.com.br/), [FrontInVale](https://frontinvale.com.br/), [FrontInBh](https://www.frontinbh.com.br/), [RubyConf](https://www.rubyconf.com.br/), and some international events like [Rails World](https://rubyonrails.org/world/2023), [DPW](https://conference.dpw.ai/), and [Heroku's Waza](https://blog.heroku.com/waza-2013). In fact, it was at Waza in 2013 that I met [Matz](https://en.wikipedia.org/wiki/Yukihiro_Matsumoto), the creator of Ruby. :heart:
## The Beginning of the Plan
Tropical.rb already existed, and its last edition had taken place in 2015. It started as a local event organized by the Recife Ruby user group, [FrevoOnRails](http://frevoonrails.com.br/). At the time, the event was called "AbrilProRuby". I organized the second regional edition of the event and helped with the first national edition, which was conceived by [Lailson Bandeira](https://www.linkedin.com/in/lailsonbm/) and also had [Thiago Diniz](https://www.linkedin.com/in/thiagodiniz/) as an organizer.
At the beginning of 2023, I was missing Ruby/Rails events in Brazil. Regional meetups were not happening regularly, and there was very little talk about Ruby. The main promoters of Rails in Brazil, [Fábio Akita](https://x.com/AkitaOnRails) and [Plataformatec](https://plataformatec.com/), were no longer focused on Ruby. It was clear to me that events needed to be revived.
The first major challenge of organizing an event is that most of them operate at a loss. The last edition of Tropical.rb, in 2015, had a loss of R$ 250,000 (USD 50k) in today's values. RubyConf, TheConf, FrontInSampa, and so many other conferences have incurred losses, often with the organizer bearing the cost.
When I brought this idea to my partner, [Leo Cavalcanti](https://www.linkedin.com/in/leozaca/), he agreed immediately. As he likes to say, [Linkana](https://leozaca.substack.com/p/uma-defesa-do-lifestyle-business) is an [independent](https://leozaca.substack.com/p/uma-defesa-do-lifestyle-business) and profitable startup. We decided to take the risk and organize a conference, even though our clients weren't developers, because we knew it was something important to do. With that, Linkana took on the financial risk of the event.
The first person I reached out to for help was [Rafael França](https://x.com/rafaelfranca), a member of the Rails Core and a long-time friend.
França immediately agreed to help organize the event, and that made all the difference. His network and the credibility that the conference gained by being co-organized by a Rails Core member were invaluable. A few months later, [Ju Dias](https://x.com/juuh42dias) and [Débora Fernandes](https://www.linkedin.com/in/debborafernandess/) joined the team.
## Seeking Speakers
A significant part of the conference experience is the people you meet or reconnect with. At the best events I've attended, in addition to networking, I've learned a lot from the talks. To get the attention of the most famous keynotes, I knew I had to invite them personally. I was one of the "lucky ones" who managed to get a ticket to the first edition of Rails World in Amsterdam.
I met most of the speakers who came from abroad in person. I prepared a kit with a shirt, flip-flops, cachaça, and a beach bag. I also brought several shirts that I distributed to Brazilians and Rails Core members. The event was "invaded" by Tropical.rb, and everyone was wondering what that purple shirt was. Even DHH got his:
With the event's promotion on https://rubyconferences.org/, newsletters, and Twitter, we received over 100 talk proposals. Another important point for the conference was defining our focus well. Like Rails World, we wanted to talk about the framework's future and startups. Having Rafael França as one of the reviewers was very important; he told us what was or wasn't aligned with Rails 8.
To make the speakers feel at home, we thought of several details. For the speakers who didn't speak Portuguese, the organizers and I personally picked them up from the airport and took them to the hotel. The hotel we chose was an international chain that the speakers were familiar with and was close to the event venue. Thiago Diniz was responsible for taking care of all the speakers during their stay.
Many foreign companies have policies to cover travel and accommodation costs if their employees are selected to speak. This helps a lot since it's unfeasible for the event to cover these expenses. For the others, we covered the accommodation costs.
## Ticket Sales
To sell tickets, I was inspired by Rails World, which focused heavily on promotion before starting sales. This worked very well for us too. With the keynotes confirmed, we launched a website where people could express interest in attending, and I started participating in [meetups](https://www.youtube.com/watch?v=4_EA11hiewI), [podcasts](https://www.hipsters.tech/ecossistema-ruby-on-rails-hipsters-ponto-tech-393/), and [YouTube lives](https://www.youtube.com/watch?v=W5j1F7l17C0&t=1s). We reactivated our [LinkedIn](https://www.linkedin.com/company/tropicalrb/) and [Twitter](https://x.com/tropical_rb).
With the audience already waiting, we opened sales, and in less than three days, all tickets sold out. Between tickets and sponsors, we had an audience of approximately 400 people.
## Seeking Sponsors
Because our team was small, we didn't parallelize initiatives, and finding sponsors was the last task. This turned out to be the best thing we did. It was my biggest challenge by far, both because I'm not a salesperson and due to the event's history. By the time we approached potential sponsors, we already had the keynotes announced and all tickets for the general public sold out.
Companies that sponsor events do not have unlimited resources. They need to choose which events to sponsor. We created a well-crafted document listing everything included in the package and mapped several companies that use Ruby on Rails. With good sponsorship material, sold-out tickets, and confirmed keynotes, it was easier than I expected. Unlike the last edition, companies using Rails are now much more mature, and there is a shortage of Ruby professionals in the market. They want to associate their brand with the event to strengthen their employer brand. We also received support from companies that sell to developers and others from abroad interested in hiring in Brazil. In the end, we managed to break even.
Another important factor is that we opened a non-profit association, "Rubi nos Trilhos do Brasil," so we could issue invoices to sponsors, ensuring that resources were dedicated exclusively to the event. No organizer or volunteer received any compensation from the event. In the end, we had 19 amazing sponsors!
## The Day of the Event
Choosing the venue and format was crucial. I wanted to associate Rails with startups, so I chose Cubo Itaú, the largest startup hub in Latin America. A modern auditorium with excellent infrastructure.
One of the challenges was taking on the responsibility of co-presenting the event. To tackle this, [Larissa Santana](https://www.linkedin.com/in/larissasantana/) and the consultancy Calor helped me a lot.
Besides the traditional talks, we had some unique initiatives.
The first was a panel with four founders of the largest Brazilian companies that use Rails: [Wagner Narde](https://www.linkedin.com/in/wagnernarde/) from Vindi, [Carlos Brando](https://www.linkedin.com/in/carlosbrando/) from Enjoei, [Thiago Scalone](https://www.linkedin.com/in/scalone/) from CloudWalk, and [Bruno Ghisi](https://www.linkedin.com/in/brunoghisi/) from RD Station. Many developers aspire to become entrepreneurs, and I wanted people to see that Rails remains one of the best frameworks for launching a startup.
The other panel was about the Rails Foundation. The creation of the foundation was one of the most important initiatives for the Rails community. I believed that people in Latin America needed to know about the foundation, and the foundation needed to understand the demands and needs of Ruby developers outside the North America/Europe axis. It was incredible to have [Amanda Perino](https://www.linkedin.com/in/amandabrookeperino/), Executive Director of the Rails Foundation, [Bruno Miranda](https://www.linkedin.com/in/brunomiranda/), a Brazilian and a member of the Rails Foundation board, and [Robby Russel](https://www.linkedin.com/in/robbyrussell/) as the question moderator.
One of the event's goals was to strengthen the community, so all the organizers of Ruby/Rails meetups in Brazil were honored on stage, along with Fábio Akita, who created and organized RubyConfBR for many years. Additionally, we had the opportunity to honor Paulo Fagiani, organizer of the historic Oxente Rails event, who sadly passed away a few months later.
Finally, in collaboration with Le Wagon, we selected junior developers recently graduated from the bootcamp to create a [catalog of companies](https://empresas.ruby.com.br/) that use Ruby on Rails in Brazil, presented on stage at the event. Many team members got their first jobs during this process.
These four initiatives certainly made Tropical.rb even more unique.
## In Conclusion
Organizing tech events is about giving what is most precious: your time. It's crucial that your motivation is in the right place. It's not about ROI (Return on Investment), nor is it about career marketing. It's about contributing to something you believe in.
Links to the talks: [Watch the talks here](https://www.youtube.com/@tropicalrb)
Links to the photos: [See the photos here](https://photos.app.goo.gl/hkJZ3xbD1pajNQ7P9)
We hope to see you all in 2025!
If you want to discuss event organization, I'm available on [LinkedIn](https://www.linkedin.com/in/cirdesh/) and [Twitter](https://x.com/cirdesh). | cirdes |
1,908,825 | How to Make a Checkers Game with Python | Creating a Checkers game in Python can be a rewarding project that introduces various concepts of... | 0 | 2024-07-02T11:40:28 | https://dev.to/hichem-mg/how-to-make-a-checkers-game-with-python-4j2h | python, gamedev, tutorial | Creating a Checkers game in Python can be a rewarding project that introduces various concepts of game development, including graphical user interfaces (GUIs), game logic, and event handling.
For this guide, we'll use the `pygame` library, which is a popular choice for developing games in Python due to its simplicity and powerful features.
## How to Make a Checkers Game with Python
### Prerequisites
1. **Python**: Make sure you have Python installed on your machine. You can download it from [python.org](https://www.python.org/downloads/).
2. **Pygame**: Install the `pygame` library using pip:
```bash
pip install pygame
```
### Setting Up the Project
Create a new directory for your Checkers game project and navigate into it:
```bash
mkdir checkers_game
cd checkers_game
```
Create a new Python file for the game logic:
```bash
touch main.py
```
### Step 1: Importing Libraries
In your `main.py`, start by importing the necessary libraries:
```python
import pygame
import sys
from pygame.locals import *
```
### Step 2: Initializing Pygame
Initialize `pygame` and set up the main game window:
```python
pygame.init()
# Constants
WIDTH, HEIGHT = 800, 800
ROWS, COLS = 8, 8
SQUARE_SIZE = WIDTH // COLS
# RGB Colors
RED = (255, 0, 0)
WHITE = (255, 255, 255)
BLACK = (0, 0, 0)
BLUE = (0, 0, 255)
GREY = (128, 128, 128)
# Create the game window
WIN = pygame.display.set_mode((WIDTH, HEIGHT))
pygame.display.set_caption('Checkers')
```
### Step 3: Drawing the Board
Create a function to draw the checkerboard:
```python
def draw_board(win):
win.fill(BLACK)
for row in range(ROWS):
for col in range(row % 2, COLS, 2):
pygame.draw.rect(win, RED, (row * SQUARE_SIZE, col * SQUARE_SIZE, SQUARE_SIZE, SQUARE_SIZE))
```
### Step 4: Creating the Piece Class
Define a class to represent the game pieces:
```python
class Piece:
PADDING = 15
OUTLINE = 2
def __init__(self, row, col, color):
self.row = row
self.col = col
self.color = color
self.king = False
if self.color == RED:
self.direction = -1
else:
self.direction = 1
self.x = 0
self.y = 0
self.calc_pos()
def calc_pos(self):
self.x = SQUARE_SIZE * self.col + SQUARE_SIZE // 2
self.y = SQUARE_SIZE * self.row + SQUARE_SIZE // 2
def make_king(self):
self.king = True
def draw(self, win):
radius = SQUARE_SIZE // 2 - self.PADDING
pygame.draw.circle(win, GREY, (self.x, self.y), radius + self.OUTLINE)
pygame.draw.circle(win, self.color, (self.x, self.y), radius)
if self.king:
crown = pygame.image.load('crown.png')
crown = pygame.transform.scale(crown, (44, 25))
win.blit(crown, (self.x - crown.get_width()//2, self.y - crown.get_height()//2))
def move(self, row, col):
self.row = row
self.col = col
self.calc_pos()
```
### Step 5: Creating the Board Class
Define a class to represent the board and manage the pieces:
```python
class Board:
def __init__(self):
self.board = []
self.red_left = self.white_left = 12
self.red_kings = self.white_kings = 0
self.create_board()
def draw_squares(self, win):
win.fill(BLACK)
for row in range(ROWS):
for col in range(row % 2, COLS, 2):
pygame.draw.rect(win, RED, (row * SQUARE_SIZE, col * SQUARE_SIZE, SQUARE_SIZE, SQUARE_SIZE))
def create_board(self):
for row in range(ROWS):
self.board.append([])
for col in range(COLS):
if col % 2 == ((row + 1) % 2):
if row < 3:
self.board[row].append(Piece(row, col, WHITE))
elif row > 4:
self.board[row].append(Piece(row, col, RED))
else:
self.board[row].append(0)
else:
self.board[row].append(0)
def draw(self, win):
self.draw_squares(win)
for row in range(ROWS):
for col in range(COLS):
piece = self.board[row][col]
if piece != 0:
piece.draw(win)
```
### Step 6: Creating the Game Class
Define a class to manage the game state:
```python
class Game:
def __init__(self, win):
self._init()
self.win = win
def update(self):
self.board.draw(self.win)
pygame.display.update()
def _init(self):
self.selected = None
self.board = Board()
self.turn = RED
self.valid_moves = {}
def reset(self):
self._init()
def select(self, row, col):
if self.selected:
result = self._move(row, col)
if not result:
self.selected = None
self.select(row, col)
piece = self.board.get_piece(row, col)
if piece != 0 and piece.color == self.turn:
self.selected = piece
self.valid_moves = self.board.get_valid_moves(piece)
return True
return False
def _move(self, row, col):
piece = self.board.get_piece(row, col)
if self.selected and (row, col) in self.valid_moves:
self.board.move(self.selected, row, col)
skipped = self.valid_moves[(row, col)]
if skipped:
self.board.remove(skipped)
self.change_turn()
else:
return False
return True
def change_turn(self):
self.valid_moves = {}
if self.turn == RED:
self.turn = WHITE
else:
self.turn = RED
```
### Step 7: Main Game Loop
Add the main game loop to handle events and updates:
```python
def main():
run = True
clock = pygame.time.Clock()
game = Game(WIN)
while run:
clock.tick(60)
for event in pygame.event.get():
if event.type == pygame.QUIT:
run = False
if event.type == pygame.MOUSEBUTTONDOWN:
pos = pygame.mouse.get_pos()
row, col = get_row_col_from_mouse(pos)
game.select(row, col)
game.update()
pygame.quit()
def get_row_col_from_mouse(pos):
x, y = pos
row = y // SQUARE_SIZE
col = x // SQUARE_SIZE
return row, col
if __name__ == "__main__":
main()
```
### Conclusion
This guide outlines the basic structure of a Checkers game in Python using `pygame`, [here](https://play-checkers.online/) is an online demo of the game. You can further enhance this game by adding features such as enforcing rules for jumps, highlighting valid moves, and creating a user interface for start and end screens.
This project covers essential concepts in game development, such as:
- Handling user inputs and events.
- Drawing and updating the game board and pieces.
- Managing game state and transitions.
Feel free to expand on this guide by adding more advanced features and polishing the game mechanics. Happy coding! | hichem-mg |
1,908,824 | Automating Linux User Management with Bash: A Step-by-Step Guide | Automating Linux User Management with Bash As a SysOps engineer, one of your... | 0 | 2024-07-02T11:40:04 | https://dev.to/michaelalao/automating-linux-user-management-with-bash-a-step-by-step-guide-50k3 | linux, user, management, bash | # Automating Linux User Management with Bash
As a SysOps engineer, one of your responsibilities is to efficiently manage user accounts on Linux systems. With the influx of new developers, creating and managing user accounts manually can be time-consuming and prone to errors. To streamline this process, we’ll create a Bash script that automates the creation of users and groups, sets up home directories with appropriate permissions, generates random passwords, and logs all actions for auditing purposes.
## Introduction
Managing user accounts on Linux involves several repetitive tasks, such as creating user accounts, setting up groups, and ensuring appropriate permissions. Automating these tasks can save time and reduce errors. In this article, we'll walk through a Bash script that reads a list of usernames and groups from a text file, creates the necessary users and groups, sets up home directories, generates random passwords, and logs all actions.
## Prerequisites
To follow along, you’ll need:
- A Linux environment (we'll use Ubuntu on Windows Subsystem for Linux (WSL)).
- Visual Studio Code with the Remote - WSL extension.
- Basic knowledge of Bash scripting.
## The Script
Here's the `create_users.sh` script:
```bash
#!/bin/bash
LOG_FILE="/var/log/user_management.log"
PASSWORD_FILE="/var/secure/user_passwords.csv"
INPUT_FILE="$1"
# Ensure the log file exists
sudo touch "$LOG_FILE"
sudo chmod 644 "$LOG_FILE"
# Ensure the secure directory and password file exist
sudo mkdir -p /var/secure
sudo touch "$PASSWORD_FILE"
sudo chmod 600 "$PASSWORD_FILE"
# Function to log messages
log_message() {
echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" | sudo tee -a "$LOG_FILE"
}
# Function to create users and groups
create_user() {
local username=$1
local groups=$2
# Check if user already exists
if id "$username" &>/dev/null; then
log_message "User $username already exists. Skipping user creation."
return 1
fi
# Create a group with the same name as the user
if ! getent group "$username" &>/dev/null; then
sudo groupadd "$username"
log_message "Group $username created."
fi
# Create the user and add to their own group
sudo useradd -m -g "$username" -s /bin/bash "$username"
log_message "User $username created."
# Add user to additional groups
IFS=',' read -ra group_array <<< "$groups"
for group in "${group_array[@]}"; do
if ! getent group "$group" &>/dev/null; then
sudo groupadd "$group"
log_message "Group $group created."
fi
sudo usermod -aG "$group" "$username"
log_message "Added $username to group $group."
done
# Set a random password
password=$(openssl rand -base64 12)
echo "$username:$password" | sudo chpasswd
log_message "Password set for user $username."
# Store the username and password in the secure file
echo "$username,$password" | sudo tee -a "$PASSWORD_FILE" > /dev/null
log_message "Stored password for user $username."
# Set the home directory permissions
sudo chown "$username:$username" "/home/$username"
sudo chmod 700 "/home/$username"
log_message "Home directory for $username set with appropriate permissions and ownership."
}
# Read input file and process each line
while IFS=';' read -r username groups || [ -n "$username" ]; do
username=$(echo "$username" | xargs)
groups=$(echo "$groups" | xargs)
create_user "$username" "$groups"
done < "$INPUT_FILE"
log_message "User creation script completed."
```
### How It Works
1. **Logging Setup**: The script starts by setting up log and password files with appropriate permissions.
2. **User and Group Creation**: For each user, the script checks if the user and their group exist before creating them. It ensures that each user has a group with the same name and adds the user to any additional groups specified.
3. **Password Generation**: A random password is generated using `openssl` and assigned to the user.
4. **Home Directory Setup**: The script sets the ownership and permissions of the user’s home directory.
5. **Logging Actions**: All actions, including errors, are logged to `/var/log/user_management.log`.
Let's break down the `create_users.sh` script step by step to understand each part of the code and its purpose.
### Script Breakdown
#### 1. Shebang and Variable Definitions
```bash
#!/bin/bash
LOG_FILE="/var/log/user_management.log"
PASSWORD_FILE="/var/secure/user_passwords.csv"
INPUT_FILE="$1"
```
- `#!/bin/bash`: This is the shebang line that specifies the script should be run using the Bash shell.
- `LOG_FILE`: Defines the path to the log file where actions will be recorded.
- `PASSWORD_FILE`: Defines the path to the file where user passwords will be securely stored.
- `INPUT_FILE`: Captures the first argument passed to the script, which is the name of the text file containing usernames and groups.
#### 2. Ensure Log and Password Files Exist
```bash
# Ensure the log file exists
sudo touch "$LOG_FILE"
sudo chmod 644 "$LOG_FILE"
# Ensure the secure directory and password file exist
sudo mkdir -p /var/secure
sudo touch "$PASSWORD_FILE"
sudo chmod 600 "$PASSWORD_FILE"
```
- `sudo touch "$LOG_FILE"`: Creates the log file if it doesn't already exist.
- `sudo chmod 644 "$LOG_FILE"`: Sets permissions for the log file so it is readable by all users but writable only by the owner.
- `sudo mkdir -p /var/secure`: Creates the `/var/secure` directory if it doesn't exist.
- `sudo touch "$PASSWORD_FILE"`: Creates the password file if it doesn't exist.
- `sudo chmod 600 "$PASSWORD_FILE"`: Sets permissions for the password file so only the owner can read and write it.
#### 3. Logging Function
```bash
# Function to log messages
log_message() {
echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" | sudo tee -a "$LOG_FILE"
}
```
- `log_message()`: A function that takes a message as an argument and appends it to the log file with a timestamp.
- `echo "$(date '+%Y-%m-%d %H:%M:%S') - $1" | sudo tee -a "$LOG_FILE"`: Formats the log message with a timestamp and writes it to the log file.
#### 4. User and Group Creation Function
```bash
# Function to create users and groups
create_user() {
local username=$1
local groups=$2
# Check if user already exists
if id "$username" &>/dev/null; then
log_message "User $username already exists. Skipping user creation."
return 1
fi
# Create a group with the same name as the user
if ! getent group "$username" &>/dev/null; then
sudo groupadd "$username"
log_message "Group $username created."
fi
# Create the user and add to their own group
sudo useradd -m -g "$username" -s /bin/bash "$username"
log_message "User $username created."
# Add user to additional groups
IFS=',' read -ra group_array <<< "$groups"
for group in "${group_array[@]}"; do
if ! getent group "$group" &>/dev/null; then
sudo groupadd "$group"
log_message "Group $group created."
fi
sudo usermod -aG "$group" "$username"
log_message "Added $username to group $group."
done
# Set a random password
password=$(openssl rand -base64 12)
echo "$username:$password" | sudo chpasswd
log_message "Password set for user $username."
# Store the username and password in the secure file
echo "$username,$password" | sudo tee -a "$PASSWORD_FILE" > /dev/null
log_message "Stored password for user $username."
# Set the home directory permissions
sudo chown "$username:$username" "/home/$username"
sudo chmod 700 "/home/$username"
log_message "Home directory for $username set with appropriate permissions and ownership."
}
```
- `create_user()`: A function to create a user and their groups.
- `local username=$1` and `local groups=$2`: Capture the username and groups as local variables.
- `if id "$username" &>/dev/null; then`: Check if the user already exists using the `id` command.
- `if ! getent group "$username" &>/dev/null; then`: Check if the user's primary group exists.
- `sudo groupadd "$username"`: Create the primary group for the user.
- `sudo useradd -m -g "$username" -s /bin/bash "$username"`: Create the user with a home directory and set their shell to Bash.
- `IFS=',' read -ra group_array <<< "$groups"`: Split the groups string into an array.
- `for group in "${group_array[@]}"; do`: Loop through each group in the array.
- `sudo usermod -aG "$group" "$username"`: Add the user to each additional group.
- `password=$(openssl rand -base64 12)`: Generate a random password using `openssl`.
- `echo "$username:$password" | sudo chpasswd`: Set the user's password.
- `echo "$username,$password" | sudo tee -a "$PASSWORD_FILE" > /dev/null`: Store the username and password in the secure file.
- `sudo chown "$username:$username" "/home/$username"` and `sudo chmod 700 "/home/$username"`: Set ownership and permissions for the user's home directory.
#### 5. Process Each Line in the Input File
```bash
# Process each line in the input file
while IFS=';' read -r username groups || [ -n "$username" ]; do
username=$(echo "$username" | xargs)
groups=$(echo "$groups" | xargs)
create_user "$username" "$groups"
done < "$INPUT_FILE"
log_message "User creation script completed."
```
- `while IFS=';' read -r username groups || [ -n "$username" ];`: Read each line in the input file, splitting the line into `username` and `groups` using `;` as the delimiter, and ensure the last line is processed even if it doesn't end with a newline.
- `username=$(echo "$username" | xargs)` and `groups=$(echo "$groups" | xargs)`: Trim any leading or trailing whitespace from `username` and `groups`.
- `create_user "$username" "$groups"`: Call the `create_user` function for each user and their groups.
- `log_message "User creation script completed."`: Log the completion of the script.
### Testing the Script
To test the script on a Windows machine using WSL and VS Code, follow these steps:
1. **Set Up WSL**:
- Install WSL and a Linux distribution (e.g., Ubuntu) as described in the [WSL installation guide](https://docs.microsoft.com/en-us/windows/wsl/install).
2. **Install VS Code and WSL Extension**:
- Download and install [Visual Studio Code](https://code.visualstudio.com/).
- Install the Remote - WSL extension from the Extensions view in VS Code.
3. **Create Project Directory and Files**:
- Open a WSL terminal in VS Code and create a project directory:
```bash
mkdir create_users_project
cd create_users_project
```
- Create the `create_users.sh` script and `users.txt` file in this directory.
4. **Make the Script Executable**:
```bash
chmod +x create_users.sh
```
5. **Run the Script**:
```bash
sudo ./create_users.sh users.txt
```
6. **Verify Results**:
- Check the log file:
```bash
cat /var/log/user_management.log
```
- Check the password file:
```bash
cat /var/secure/user_passwords.csv
```
### Conclusion
This script automates the process of creating users, assigning them to groups, generating passwords, and setting up home directories. By logging all actions and securely storing passwords, it ensures transparency and security in user management. | michaelalao |
1,908,823 | How to Reset Auto Increment in Postgres | Reset or change auto increment in postgres using ALTER SEQUENCE command. To use that command you can... | 0 | 2024-07-02T11:37:36 | https://dev.to/afrijaldz/how-to-reset-auto-increment-in-postgres-38fe | ---
title: How to Reset Auto Increment in Postgres
published: true
description:
tags:
# Use a ratio of 100:42 for best results.
# published_at: 2024-07-02 11:35 +0000
---
Reset or change auto increment in postgres using `ALTER SEQUENCE` command. To use that command you can determine which table and column that you wil change.
For example you have roles table and inside that role table you want reset the id column.
You can use this simple query below to reset auto increment in postgres.
`ALTER SEQUENCE roles_id_seq RESTART WITH 1`
note:
the `_seq` is required, you cannot remove it. So the pattern is `{table}_{column}_seq`.
In postgres you cannot change to 0, the minimum value is 1.
[Original post](https://afrijal.dev/posts/how-to-reset-auto-increment-in-postgres/) | afrijaldz | |
1,908,822 | Mastering AI Prompts: A Software Engineer's Guide to Harnessing the Power of LLMs | As software engineers, we have a unique opportunity to leverage Large Language Models (LLMs) like... | 0 | 2024-07-02T11:37:30 | https://dev.to/muhammad_salem/mastering-ai-prompts-a-software-engineers-guide-to-harnessing-the-power-of-llms-nmm | As software engineers, we have a unique opportunity to leverage Large Language Models (LLMs) like ChatGPT to enhance our productivity and problem-solving capabilities. The key to unlocking this potential lies in crafting effective prompts. This guide will help you formulate prompts that elicit the most valuable and relevant responses for your software engineering tasks.
1. Be Specific and Contextual
Provide clear, detailed context about your project, including:
- Programming language and framework
- Project stage (e.g., planning, development, debugging)
- Specific technical constraints or requirements
Example:
"I'm developing a React Native app with a Node.js backend. We're using MongoDB for data storage. I need help designing the user authentication flow."
2. Use Technical Terminology
Employ industry-standard terms and concepts to ensure precise communication.
Example:
"Explain how to implement a factory method pattern in TypeScript for creating different types of database connections."
3. Break Down Complex Problems
For intricate issues, divide your query into smaller, manageable parts.
Example:
"I'm optimizing a data processing pipeline. Let's approach this step-by-step:
1. First, how can I identify bottlenecks in the current system?
2. What are best practices for parallelizing data processing tasks?
3. How can I implement efficient caching mechanisms?"
4. Request Specific Outputs
Clearly state the format or type of response you're looking for.
Example:
"Provide a code snippet in Python for a decorator that measures function execution time."
5. Leverage Hypothetical Scenarios
Frame your questions in "what-if" scenarios to explore different approaches.
Example:
"If I were to scale my web application to handle 1 million concurrent users, what architectural changes would you recommend?"
6. Ask for Pros and Cons
When considering different solutions, ask for a balanced view.
Example:
"Compare microservices architecture vs. monolithic architecture for a large-scale e-commerce platform. List three pros and cons for each."
7. Request Step-by-Step Explanations
For complex processes or algorithms, ask for detailed, step-by-step breakdowns.
Example:
"Explain the process of implementing a B-tree data structure in C++, step-by-step."
8. Seek Code Reviews
You can ask the AI to review and suggest improvements for your code.
Example:
"Review this Python function for efficiency and best practices: [paste your code here]"
9. Explore Edge Cases
Ask about potential edge cases or error scenarios to ensure robust design.
Example:
"What are potential edge cases to consider when implementing a rate-limiting algorithm for an API?"
10. Request Analogies or Simplifications
For complex concepts, ask for analogies or simplified explanations.
Example:
"Explain the concept of blockchain in simple terms, as if explaining to a junior developer."
11. Use Role-Playing Scenarios
Frame your question as if the AI were an experienced colleague or specialist.
Example:
"As an experienced DevOps engineer, how would you set up a CI/CD pipeline for a microservices architecture using Kubernetes?"
12. Ask for Resources and Further Learning
Request additional resources for deeper understanding.
Example:
"Suggest 3-5 authoritative resources (books, articles, or courses) for learning advanced SQL optimization techniques."
13. Iterate and Refine
Don't hesitate to ask follow-up questions or for clarification on previous responses.
Example:
"Regarding your previous explanation of RESTful API design, can you elaborate on how to handle versioning?"
14. Challenge the AI
Ask the AI to critique its own suggestions or provide alternative viewpoints.
Example:
"You suggested using Redux for state management in my React app. What are some potential drawbacks to this approach, and are there viable alternatives?"
15. Combine Multiple Concepts
Ask how to integrate different technologies or concepts for innovative solutions.
Example:
"How can I combine machine learning techniques with traditional algorithms to improve the efficiency of my path-finding algorithm in a game engine?"
Conclusion:
Mastering the art of crafting prompts for LLMs can significantly enhance your capabilities as a software engineer. By providing clear context, using technical language, breaking down complex problems, and leveraging the AI's analytical capabilities, you can obtain insights and solutions that accelerate your development process and broaden your technical understanding.
Remember, while LLMs are powerful tools, they should complement, not replace, your expertise and critical thinking. Always validate AI-generated suggestions against established best practices, your team's guidelines, and your professional judgment.
By incorporating these techniques into your interactions with LLMs, you'll be able to extract more value from these AI assistants, making them an invaluable part of your software engineering toolkit. | muhammad_salem | |
1,892,290 | A charming romance between WebSocket and React Native | In modern mobile development, WebSockets offer a powerful way to enable real-time communication... | 0 | 2024-07-02T11:37:01 | https://dev.to/amitkumar13/a-charming-romance-between-websocket-and-react-native-3359 | websocket, android, ios, reactnative | In modern mobile development, WebSockets offer a powerful way to enable real-time communication between the client and server. React Native, being a popular framework for building mobile applications, pairs excellently with WebSockets. In this blog, I'll guide you through creating a custom WebSocket integration in React Native that handles connection, reconnection, and error handling gracefully.
## Why Use WebSockets?
WebSockets provide a full-duplex communication channel over a single, long-lived connection. Unlike traditional HTTP requests, which are initiated by the client, WebSockets allow for bi-directional communication, making them ideal for real-time applications like chat apps, live notifications, and online gaming.
## Creating the Custom WebSocket Integration
To manage WebSocket connections in a React Native application, we'll create a custom hook called useWebSocket. This hook will handle:
- Establishing the WebSocket connection.
- Managing connection status.
- Handling incoming messages.
-Reconnecting on connection loss with an exponential backoff strategy.
```
import { useEffect, useRef, useState } from 'react';
const useWebSocket = (
onMessage = () => {},
onError = () => {},
onClose = () => {}
) => {
const [isWebSocketConnected, setWebSocketConnected] = useState(false);
const ws = useRef(null);
const reconnectIntervalRef = useRef(1000);
const url = 'ws://echo.websocket.org'; // replace it with your URL
const connectWebSocket = () => {
try {
// Create a WebSocket connection
ws.current = new WebSocket(url);
// WebSocket event listeners
ws.current.onopen = () => {
setWebSocketConnected(true);
reconnectIntervalRef.current = 1000; // Reset reconnection interval on successful connection
};
ws.current.onmessage = (event) => {
onMessage(event.data);
};
ws.current.onerror = (error) => {
onError(error);
};
ws.current.onclose = (event) => {
setWebSocketConnected(false);
onClose(event);
// Attempt to reconnect
setTimeout(() => {
reconnectIntervalRef.current = Math.min(
reconnectIntervalRef.current * 2,
30000
); // Exponential backoff, max 30 seconds
connectWebSocket();
}, reconnectIntervalRef.current);
};
} catch (error) {
console.log(error);
}
};
useEffect(() => {
connectWebSocket();
// Clean up WebSocket connection on component unmount
return () => {
if (ws.current) {
ws.current.close();
}
};
}, [url]);
return isWebSocketConnected;
};
export default useWebSocket;
```
## How to Use the Hook
```
import React, { useState } from 'react';
import { View, Text, FlatList, SafeAreaView, StyleSheet } from 'react-native';
import useWebSocket from './useWebSocket';
const WebSocketComponent = () => {
const [messages, setMessages] = useState([]);
const handleOnMessage = (message) => {
setMessages((prevMessages) => [...prevMessages, message]);
if (message === 'callAPI') {
// Call your API here
console.log('API called');
}
};
const handleOnError = (error) => {
console.error('WebSocket error:', error);
};
const handleOnClose = (event) => {
console.log('WebSocket closed:', event);
};
const isWebSocketConnected = useWebSocket(handleOnMessage, handleOnError, handleOnClose);
return (
<SafeAreaView style={styles.container}>
<Text style={styles.status}>
Status: {isWebSocketConnected ? 'Connected' : 'Disconnected'}
</Text>
<FlatList
data={messages}
keyExtractor={(item, index) => index.toString()}
renderItem={({ item }) => <Text style={styles.message}>{item}</Text>}
/>
</SafeAreaView>
);
};
const styles = StyleSheet.create({
container: {
flex: 1,
padding: 16,
},
status: {
fontSize: 18,
marginBottom: 16,
},
message: {
fontSize: 16,
marginBottom: 8,
},
});
export default WebSocketComponent;
```
## Testing the WebSocket Connection with WebSocketKing
To test the WebSocket connection, follow these steps:
**1. Go to WebSocketKing:** Visit [WebSocketKing](https://websocketking.com/).
**2. Paste your WebSocket URL:** Enter your WebSocket URL in the connection field.
**3. Press Connect:** Establish the connection by clicking the connect button.
**4. Send a Message:** In the payload field, type the message you want to send, e.g., callAPI.
**5. Press Send:** Send the message.
When the message callAPI is received, the handleOnMessage function will handle it and log "API called" to the console. You can replace this with an actual API call as needed.
## Conclusion
By using the useWebSocket hook, you can easily integrate WebSocket functionality into your React Native applications. This hook not only establishes and manages the WebSocket connection but also handles reconnections with an exponential backoff strategy, ensuring a robust and reliable real-time communication channel. Testing your WebSocket connection with WebSocketKing helps ensure that everything works as expected before deploying your application.
Feel free to customize the hook further based on your application's needs. Happy coding!
| amitkumar13 |
1,908,817 | Boost Efficiency: Top 10 Benefits of Implementing Cloud APIs for Image Processing | Introduction Artificial Intelligence (AI) has evolved from a futuristic idea into an... | 0 | 2024-07-02T11:36:37 | https://dev.to/api4ai/boost-efficiency-top-10-benefits-of-implementing-cloud-apis-for-image-processing-16kd | ai, api, nlp, llm |
#Introduction
Artificial Intelligence (AI) has evolved from a futuristic idea into an essential element of contemporary technology. One of the most impactful areas where AI has achieved notable progress is in the creation of Application Programming Interfaces (APIs). These AI-driven APIs form the foundation for embedding advanced machine learning capabilities into a wide variety of applications, ranging from chatbots and virtual assistants to advanced data analysis tools.
The swift progression of AI API development in recent years has been truly remarkable. AI APIs have become increasingly accessible, more powerful, and integral to the operations of various industries. This rapid advancement presents incredible opportunities but also brings the challenge of keeping up with the latest trends and innovations. As the AI landscape continues to evolve, staying informed about these changes is crucial for developers, businesses, and tech enthusiasts who wish to harness the full potential of AI in their projects.
This article will explore the top 5 trends in AI API development poised to shape the industry in 2024. We will examine advancements in Natural Language Processing (NLP), the merging of AI with edge computing, the increasing focus on explainable AI, the critical importance of AI security and ethical standards, and the exciting innovations in AI APIs for image processing.
By grasping these trends, you will be better prepared to navigate the ever-changing field of AI API development, ensuring your applications remain at the forefront of technology. Whether you are an experienced developer, a tech entrepreneur, or an AI enthusiast, this guide will offer valuable insights into the future directions of AI APIs
#Trend 1: Advanced Natural Language Processing (NLP) Capabilities
## Overview
Natural Language Processing (NLP) has been a cornerstone of AI innovation, transforming the way machines comprehend and engage with human language. Recent years have witnessed a remarkable surge in NLP capabilities, vastly improving the performance and complexity of AI APIs. This advancement is making technology interactions more seamless and is also unlocking new possibilities for automating and enhancing various language-centric tasks. As we approach 2024, the significance of NLP in AI API development continues to escalate, fueled by breakthroughs that enable more profound language comprehension, precise translations, and sophisticated sentiment analysis.
## Key Features
**Enhanced Language Comprehension**: A significant leap in NLP is the ability to interpret and generate human language with exceptional precision. Modern AI models now excel at grasping context, idiomatic expressions, and the nuances of human emotions. This advancement is vital for crafting more natural and engaging user interactions.
**Instantaneous Language Translation**: Real-time translation capabilities have significantly improved, facilitating effortless communication across various languages. In an increasingly globalized world, this feature is invaluable for fostering collaboration and accessibility by eliminating language barriers.
**Advanced Sentiment Analysis**: Sentiment analysis has evolved to become more nuanced, allowing AI systems to recognize and analyze the emotional tone of text. This is crucial for applications that aim to understand customer sentiment, monitor social media, and deliver personalized user experiences.
## Use Cases
**Customer Support Chatbots**: Advanced NLP capabilities are revolutionizing customer support through the development of more intelligent and responsive chatbots. These chatbots can better comprehend customer inquiries, deliver precise responses, and even predict subsequent questions, resulting in enhanced customer satisfaction and operational efficiency.
**Content Moderation Tools**: By swiftly and accurately analyzing vast amounts of text, NLP-powered content moderation tools can detect and remove harmful or inappropriate content. This functionality is essential for ensuring safe and respectful online environments, particularly on social media platforms.
## Examples
**[OpenAI's GPT-4](https://openai.com/index/gpt-4/): A Prime Example of Advanced NLP Technology**
OpenAI's GPT-4 models represent the pinnacle of modern NLP technology. These models are adept at producing human-like text, comprehending intricate queries, and executing a wide range of language-related tasks. The capabilities of GPT-4 are utilized in various applications, including chatbots and content creation tools, highlighting the immense potential of advanced NLP in real-world scenarios.
**[Hugging Face's Transformers](https://huggingface.co/docs/transformers/index): Cutting-Edge NLP Technology**
The Transformers library from Hugging Face epitomizes the forefront of NLP technology, presenting a suite of robust pre-trained models that can be seamlessly incorporated into numerous applications. These models deliver top-tier performance in tasks like text generation, translation, and sentiment analysis, making them indispensable resources for developers aiming to leverage advanced NLP functionalities.
In summary, the progress in NLP is significantly enhancing AI APIs, facilitating more natural and efficient interactions between humans and machines. As we move towards 2024, the ongoing advancements in NLP will play a crucial role in shaping the future of AI applications across various fields.
# Trend 2: Merging AI with Edge Computing
## Overview
Edge computing is transforming AI API development by relocating computation and data storage nearer to where it is required. This strategy reduces latency, boosts data privacy, and lessens reliance on centralized data centers. By processing information at the network's edge, AI applications can react more quickly and efficiently, enhancing their effectiveness in real-time situations. As we approach 2024, the convergence of AI and edge computing is gaining momentum, fostering innovation and elevating performance across diverse industries.
## Key Features
**Low Latency Processing**: A major advantage of edge computing is its capability to handle data locally, minimizing the time required for data to travel to and from a central server. This reduced latency is vital for applications demanding immediate responses, such as real-time video processing or interactive AI functionalities.
**Improved Data Privacy**: By maintaining data closer to its origin, edge computing enhances privacy and security. Sensitive information can be processed locally without needing to be transmitted to a central server, thus decreasing the risk of data breaches and ensuring compliance with privacy regulations.
**Lower Bandwidth Usage**: Edge computing cuts down the volume of data that needs to be transmitted over the network, easing bandwidth limitations. This is especially crucial for applications that generate vast amounts of data, such as IoT devices, where sending all data to the cloud would be impractical.
## Use Cases
**IoT Devices**: The explosion of Internet of Things (IoT) devices has generated a significant need for real-time data processing. Edge computing enables these devices to handle data locally, resulting in quicker decision-making and enhanced performance. For example, smart home devices can function more effectively without relying on a continuous cloud connection.
**Autonomous Vehicles**: Autonomous vehicles necessitate the rapid processing of extensive data from sensors and cameras to navigate safely and efficiently. Edge computing allows these vehicles to process data in real time, facilitating split-second decisions crucial for safe operation. This ability is vital for the advancement and deployment of autonomous driving technologies.
## Examples
**[NVIDIA](https://developer.nvidia.com/embedded-computing):Pioneering Edge AI Platforms**
NVIDIA's edge AI platforms, including the NVIDIA Jetson series, are engineered to deliver AI capabilities at the edge. These platforms offer robust computing power to manage intricate AI models locally, making them perfect for applications in robotics, healthcare, and smart cities. NVIDIA's edge solutions facilitate real-time processing and analysis, boosting the functionality and responsiveness of AI-driven applications.
**[Amazon AWS Greengrass](https://aws.amazon.com/greengrass/#:~:text=the%20local%20network.-,Add%20features%20and%20connect%20to%20AWS%20services,party%20applications%20at%20the%20edge.)**: **Extending Cloud Services to the Edge**
AWS Greengrass extends Amazon Web Services capabilities to edge devices, enabling them to process data locally while still leveraging the cloud for management, analytics, and storage. This hybrid model offers the best of both worlds: the low latency and bandwidth efficiency of edge computing, coupled with the scalability and reliability of cloud services. AWS Greengrass supports a variety of AI models and can be integrated with other AWS offerings, making it a flexible solution for edge AI implementations.
In summary, the fusion of AI with edge computing is a game-changing trend for 2024, delivering substantial advantages in latency, privacy, and bandwidth efficiency. As edge computing technologies advance, they will become increasingly critical in the development and deployment of AI APIs, fostering innovation and expanding the capabilities of numerous applications.
#Trend 3: Growing Emphasis on Explainable AI (XAI)
## Overview
As artificial intelligence becomes increasingly central to critical decision-making processes, the demand for transparency and interpretability in AI models is rising. This need has led to the development of Explainable AI (XAI), which strives to make the inner workings of AI models comprehensible to humans. XAI is essential for fostering trust in AI systems, enabling users to understand how decisions are made, identify potential biases, and ensure models comply with ethical standards and regulatory requirements. The emphasis on explainability is particularly vital in fields where decisions have significant consequences, such as finance and healthcare.
## Key Features
**Model Transparency**: Explainable AI offers insights into how AI models reach specific conclusions. This transparency is crucial for users to trust the model's decisions and for developers to ensure the model's logic aligns with anticipated outcomes. Techniques such as feature importance scoring and decision tree visualization help clarify the decision-making process.
**Enhanced Debugging**: XAI enables developers to identify and correct issues within AI models more efficiently. By understanding which inputs influence particular outputs, developers can detect errors, minimize biases, and improve the overall accuracy and reliability of the models. This results in more robust and trustworthy AI systems.
**Regulatory Compliance**: With regulatory bodies worldwide introducing guidelines for AI usage, explainability becomes essential for compliance. XAI assists organizations in meeting these regulations by providing clear documentation and justification for AI-driven decisions, ensuring adherence to legal and ethical standards.
## Use Cases
**Financial Services**: In the financial industry, explainability is crucial for risk assessment, credit scoring, and fraud detection. Both regulators and customers require transparency in decision-making processes. XAI enables financial institutions to offer clear explanations for loan approvals, credit limits, and other essential financial decisions, fostering customer trust and ensuring regulatory compliance.
**Healthcare Diagnostics**: In the healthcare field, AI models aid in diagnosing diseases, suggesting treatments, and predicting patient outcomes. XAI is vital for healthcare professionals to understand and trust these recommendations. By providing transparent explanations of diagnostic processes, XAI ensures that healthcare providers can validate and rely on AI-driven insights, ultimately improving patient care.
## Examples
[LIME](https://www.oreilly.com/content/introduction-to-local-interpretable-model-agnostic-explanations-lime/?irclickid=3IOy5724WxyKUPL0w83qSz5jUkHSM9XGgSIJSw0&irgwc=1) (Local Interpretable Model-agnostic Explanations)
LIME is a widely-used method for clarifying individual predictions made by any machine learning model. It functions by approximating the original model locally with a more interpretable one, simplifying the understanding of factors influencing a particular prediction. LIME is extensively applied in scenarios where comprehending specific decisions is essential.
**[SHAP](https://shap.readthedocs.io/en/latest/) (SHapley Additive exPlanations)**:
SHAP utilizes cooperative game theory to deliver consistent and precise explanations for model predictions. It assigns an importance value to each feature for a specific prediction, clarifying how various features contribute to the final output. SHAP is exceptionally effective in improving model transparency and is widely used in both research and industry.
**[Google's What-If Tool](https://pair-code.github.io/what-if-tool/)**
This interactive tool enables users to investigate and analyze machine learning models without the need for coding. It offers visualizations that help elucidate model behavior, examine hypothetical scenarios, and compare different models. Integrated with TensorFlow and other platforms, the What-If Tool is accessible to a wide range of users looking to gain a deeper understanding of their models.
In summary, the heightened emphasis on Explainable AI is a pivotal trend for 2024, fueled by the demands for transparency, enhanced debugging, and regulatory adherence. As AI continues to integrate into various sectors, XAI will be crucial in ensuring that AI models remain trustworthy, ethical, and consistent with human values and standards.
#Trend 4: Enhanced AI Security and Ethical Standards
## Overview
As AI systems become increasingly embedded in vital aspects of society, the need to secure these systems and ensure their ethical application cannot be overstated. Given AI's potential impact on sectors such as finance, healthcare, and employment, it is imperative to establish robust security measures and ethical guidelines. Safeguarding AI systems from malicious attacks and ensuring unbiased operations are essential for maintaining public trust and promoting equitable outcomes. In 2024, the emphasis on advanced AI security and ethical standards is growing, driven by the necessity to protect sensitive data, mitigate risks, and ensure responsible AI utilization.
## Key Features
**Advanced Security Measures**: AI systems are high-value targets for cyberattacks due to the sensitive information they handle and the crucial functions they serve. Implementing sophisticated security measures, including encryption, secure access controls, and continuous monitoring, is essential to shield AI systems from unauthorized access and data breaches. These protocols help preserve the integrity and confidentiality of AI applications.
**Bias Detection and Reduction**: AI models can inadvertently perpetuate biases present in their training data, resulting in unfair and discriminatory outcomes. Identifying and mitigating these biases is crucial to ensure AI systems function equitably. Techniques such as bias audits, fairness metrics, and employing diverse training datasets are utilized to uncover and diminish biases in AI models.
**Ethical AI Standards**: Developing ethical standards for AI development and deployment ensures that AI technologies are used responsibly and in alignment with societal values. These standards address issues like transparency, accountability, and the ethical implications of AI decisions. Following ethical AI guidelines helps organizations build trust with users and stakeholders, promoting a culture of responsible AI use.
## Use Cases
**Fraud Detection Systems**: Advanced AI security protocols are vital for fraud detection systems in financial institutions. These systems must protect sensitive financial information while effectively identifying fraudulent activities. By implementing robust security measures and bias detection techniques, these systems can deliver reliable and fair fraud detection, ensuring the safety of both institutions and their clients.
**Equitable Recruitment Processes**: AI is increasingly utilized in recruitment to screen candidates and assist in hiring decisions. Ensuring these AI systems are free from biases is critical for fostering fair and inclusive hiring practices. By employing bias detection and mitigation strategies, organizations can ensure their recruitment AI systems offer equal opportunities to all candidates, regardless of their background.
## Examples
**[OpenAI](https://openai.com/): Championing Secure and Ethical AI Practices**
OpenAI is at the forefront of the AI industry, dedicated to initiatives that ensure the security and ethical application of AI. The organization has adopted rigorous security measures to safeguard its models and data and is deeply involved in research to detect and reduce biases in AI systems. Furthermore, OpenAI promotes the responsible use of AI by prioritizing transparency and accountability in its development processes.
**[IBM](https://aif360.res.ibm.com/): Leading the Way in Ethical AI and Security**
IBM has been a pioneer in advocating for ethical AI usage through the creation of the AI Fairness 360 (AIF360) toolkit. This open-source library offers metrics to detect bias in datasets and machine learning models, as well as algorithms to mitigate such biases. IBM also places a strong emphasis on data security in its AI solutions, ensuring robust defenses against cyber threats.
**[Microsoft](https://learn.microsoft.com/en-us/azure/machine-learning/concept-responsible-ai?view=azureml-api-2): Pioneering AI Security and Ethical Practices**
Microsoft has made notable progress in enhancing AI security and ethical standards. The company has developed extensive guidelines for responsible AI, emphasizing principles such as fairness, accountability, and transparency. Microsoft also invests in tools like the Fairlearn toolkit to identify and reduce biases in AI models, and it enforces stringent security measures to protect its AI systems and user data.
In summary, the emphasis on advanced AI security and ethical standards is a critical trend for 2024, driven by the need to safeguard AI systems from cyber threats and ensure their fair and responsible use. By focusing on improved security protocols, bias detection, and ethical guidelines, organizations can develop trustworthy and equitable AI systems that benefit society at large. As AI continues to progress, upholding high standards of security and ethics will be vital for its sustainable and positive impact.
#Trend 5: Advancements in AI APIs for Image Processing
## Overview
Image processing has emerged as a fundamental aspect of artificial intelligence, significantly advancing the way machines understand and engage with visual data. The development of AI APIs for image processing is revolutionizing various industries by improving the precision and efficiency of visual recognition tasks. These innovations are enabling more advanced applications, from healthcare diagnostics to retail inventory management, underscoring the increasing significance of image processing in AI. As we approach 2024, the capabilities of image processing APIs are continually expanding, offering enhanced performance and new opportunities for innovation.
## Key Features
**Enhanced Image Recognition Accuracy**: Modern image processing APIs have achieved impressive precision in recognizing and interpreting visual data. This advancement is driven by sophisticated algorithms and larger, more diverse training datasets. Improved image recognition accuracy is essential for applications that depend on precise identification and analysis of visual inputs.
**Real-Time Image Processing**: The capability to process images in real-time marks a significant breakthrough in image processing APIs. Real-time processing allows applications to analyze and respond to visual data instantly, which is critical for dynamic environments such as autonomous driving and live surveillance.
**Advanced Object Detection and Classification**: AI APIs for image processing now boast sophisticated object detection and classification capabilities. These features enable systems to accurately identify and categorize multiple objects within an image, supporting complex tasks like scene understanding and anomaly detection.
## Use Cases
**Healthcare Diagnostics (e.g., Medical Imaging)**: Image processing APIs are transforming healthcare by enhancing the accuracy and speed of medical imaging analysis. These APIs can identify abnormalities in X-rays, MRIs, and CT scans, aiding doctors in diagnosing diseases and conditions more effectively. The advanced capabilities of AI-driven image processing are facilitating earlier detection and improved patient outcomes.
**Retail (e.g., Visual Search and Inventory Management)**: In the retail industry, image processing APIs are improving the shopping experience and streamlining inventory management. Visual search tools enable customers to find products using images, enhancing search accuracy and user satisfaction. Additionally, these APIs assist retailers in managing inventory by automatically identifying and categorizing products, reducing manual labor and boosting efficiency.
## Examples
**[Google's Vision AI](https://cloud.google.com/vision?hl=en)**
Google’s Vision AI provides a robust suite of tools for image analysis, encompassing object detection, image labeling, and facial recognition. Vision AI delivers high accuracy and can swiftly process large volumes of images, making it suitable for applications across various sectors, including security and retail.
**[Amazon Rekognition](https://aws.amazon.com/rekognition/)**
Amazon Rekognition is a highly scalable service for image and video analysis. It can identify objects, scenes, and faces, and perform sentiment analysis, among other functions. With its real-time processing capabilities, Rekognition is ideal for applications like surveillance and live event analysis, where prompt feedback is essential.
**[API4AI](https://api4.ai/apis)**
API4AI offers a variety of specialized image processing APIs designed for diverse applications, including document processing, retail, and security. These APIs provide advanced features such as detailed object recognition and image enhancement, supporting high-precision tasks and delivering reliable performance across multiple industries.
The evolution of AI APIs for image processing is a significant trend for 2024, driving major advancements in the analysis and utilization of visual data. With improved accuracy, real-time processing, and enhanced object detection capabilities, these APIs are revolutionizing industries and enabling innovative applications. As image processing technology continues to progress, its impact on sectors like healthcare and retail will expand, demonstrating the transformative power of AI in interpreting and leveraging visual information.
#Conclusion
As we look ahead to 2024, the realm of AI API development is set for significant growth and innovation. Throughout this article, we have examined the top 5 trends that will shape the future of AI API development:
1. **Enhanced Natural Language Processing (NLP) Capabilities**: Advances in NLP are fostering more natural and engaging user interactions, with improvements in language comprehension, real-time translation, and sophisticated sentiment analysis.
2. **Integration of AI with Edge Computing**: Edge computing is transforming AI by enabling low-latency processing, enhancing data privacy, and reducing bandwidth usage, making it ideal for IoT devices and autonomous vehicles.
3. **Increased Focus on Explainable AI (XAI)**: The need for transparency and interpretability in AI models is growing, leading to the development of tools and frameworks that enhance model transparency, improve debugging, and ensure regulatory compliance.
4. **Advanced AI Security and Ethical Standards**: Ensuring the security and ethical use of AI systems is crucial, focusing on enhanced security protocols, bias detection and mitigation, and adherence to ethical guidelines.
5. **Evolution of AI APIs for Image Processing**: Image processing APIs are rapidly advancing, offering improved accuracy, real-time processing, and enhanced object detection capabilities, with significant applications in healthcare diagnostics and retail.
The impact of these trends on the future of AI API development is profound. They are driving the creation of more powerful, efficient, and ethical AI systems that can be trusted to perform critical tasks across various industries. By staying informed about these trends, developers and businesses can leverage the latest advancements to create innovative solutions that meet the evolving needs of their users.
We encourage readers to delve deeper into these trends and consider how they can be incorporated into their development strategies. Embracing these cutting-edge advancements will not only enhance the capabilities of your AI applications but also ensure they are secure, ethical, and aligned with the latest technological standards.
By keeping pace with these trends, you can stay at the forefront of AI innovation, harnessing the power of advanced AI APIs to drive success and make a meaningful impact in your respective fields.
[More stories about Cloud, AI and APIs](https://api4.ai/blog)
| taranamurtuzova |
1,908,815 | Choosing the Best Business Setup Companies in Dubai: A Complete Guide | In the bustling business landscape of Dubai, selecting the right business setup companies in Dubai... | 0 | 2024-07-02T11:23:49 | https://dev.to/uaemainland/choosing-the-best-business-setup-companies-in-dubai-a-complete-guide-2dbn | community |
In the bustling business landscape of Dubai, selecting the right **[business setup companies in Dubai](https://uaemainland.com/dubai-mainland-company-formation/)** is crucial for entrepreneurs aiming to establish a successful presence in this dynamic market. This comprehensive guide aims to demystify the process, offering essential insights and practical tips to streamline your decision-making.
**Understanding Business Setup in Dubai**
Dubai offers diverse options for business entities, including Free Zone, Mainland, and Offshore setups. Each option has its advantages and regulatory considerations. Understanding these distinctions is fundamental before engaging with business setup companies in Dubai.
**Criteria for Evaluating Business Setup Companies**
When choosing a business setup company in Dubai, several criteria should guide your selection process. Look for firms with a solid reputation and substantial experience in navigating the local regulatory framework. Evaluate their range of services, ensuring they align with your specific business needs. Checking customer reviews and testimonials provides valuable insights into their service quality.
**Top Business Setup Companies in Dubai**
Among the top-tier firms, UAE Mainland stands out for its comprehensive service offerings tailored to various business types and sizes. Their expertise in business setup in Dubai is backed by a proven track record of successful client engagements.
**Step-by-Step Guide to Choosing a Business Setup Company**
**Initial Research and Shortlisting:** Begin by researching business setup companies in Dubai that specialize in your industry or business model.
**Contacting and Interviewing Potential Companies:** Reach out to selected firms and schedule consultations to discuss your business goals and their service offerings.
**Comparing Proposals and Costs:** Review and compare proposals from different business setup companies in Dubai, considering not just costs but also the comprehensiveness of services offered.
**Legal and Regulatory Insights**
Navigating the legal landscape is critical when establishing a business in Dubai. Business setup companies play a vital role in ensuring compliance with local laws and regulations. Understanding these requirements early on can prevent future complications.
**Client Success Stories**
Real-world success stories provide invaluable insights into the capabilities of **[business setup companies in Dubai](https://uaemainland.com/dubai-mainland-company-formation/)**. Clients of UAE Mainland, for instance, have benefited from seamless setups and ongoing support, underscoring the importance of choosing a reputable partner.
**Conclusion**
Selecting the best business setup company in Dubai is a pivotal decision that can significantly impact your business's success. By following this guide and leveraging the expertise of firms like UAE Mainland, entrepreneurs can navigate the complexities of business setup in Dubai with confidence. | uaemainland |
1,908,814 | {CLR} | Asosiy xususiyatlar: CLR .NET platformasida yozilgan boshqariladigan ilovalar uchun ish vaqti... | 0 | 2024-07-02T11:23:47 | https://dev.to/firdavs090/clr-n2a | dotnet, clr, dotnetframework, dotnetcore | Asosiy xususiyatlar: CLR .NET platformasida yozilgan boshqariladigan ilovalar uchun ish vaqti muhitini taqdim etadi. U kodning bajarilishini boshqaradi, kod xavfsizligini, xotirani boshqarishni va dastur bajarilishining boshqa jihatlarini ta'minlaydi.
Xotirani boshqarish: CLR avtomatik xotira boshqaruvidan foydalanadi, bu esa ishlab chiquvchilarning xotirani aniq ajratish va ajratish zaruratini yo'q qiladi.
Mavzuni boshqarish: CLR bajarilish iplarini boshqarish, shu jumladan umumiy ma'lumotlarga kirishni sinxronlashtirish uchun imkoniyatlarni taqdim etadi.
Tur xavfsizligi: CLR ma'lumotlar turlaridan noto'g'ri foydalanish bilan bog'liq ko'plab ish vaqtidagi xatolarning oldini olishga yordam beradigan tip xavfsizligini ta'minlaydi.
Bir nechta tilni qo'llab-quvvatlash: CLR O'rta til (IL) ga kompilyatsiya qilingan bir nechta dasturlash tillarini qo'llab-quvvatlaydi, bu ishlab chiquvchilarga bir xil dastur yoki loyiha doirasida bir nechta tillardan foydalanishga imkon beradi.
.NET Framework bilan integratsiya: CLR .NET Frameworkning asosiy qismi boʻlib, .NET tarkibiga kiritilgan turli tillarda yozilgan komponentlarning oʻzaro ishlashini taʼminlaydi.
CLR apparat va operatsion tizimdan yuqori darajadagi abstraktsiyani ta'minlash orqali .NET ilovalarini ishlab chiqishni sezilarli darajada soddalashtiradi, bu esa ishlab chiquvchilarga resurs va platformalarni boshqarish tafsilotlariga emas, balki dastur mantig'iga e'tibor qaratishga imkon beradi.
| firdavs090 |
1,908,813 | From Puzzled to Problem-Solver: Today I fought for backend and tomorrow there is HNG adventure waiting for me | Hey there, fellow coders! Hello, this is Nazycodes and I am a backend developer for a personal... | 0 | 2024-07-02T11:22:05 | https://dev.to/nazycodes/from-puzzled-to-problem-solver-my-backend-battle-and-the-hng-adventure-awaits-28g4 |
Hey there, fellow coders! Hello, this is Nazycodes and I am a backend developer for a personal project I am passionate about developing and I love taking up challenges and learning new things I call it the learn it all bug.
That said, I have organized my goals into an ordered list as follows and this is why HNG Internship is My Next Big Quest.
This time I found out that I really do like backend development – the rush from the challenge, the satisfaction of the well-done job. That's why I'm thrilled to embark on the HNG Internship adventure. https://hng.tech/internship
The program focuses on the creation of practical projects and presence in a community of other developers which is all I could need to progress in my skills acquisition. First of all, I am looking forward to gaining knowledge from professional tutors, united with like-minded people, and work on notable projects.
**The Journey Begins**
The given internship is quite comparable to the continuation of the coding journey, which makes me very fond of it. I am eager for more problems, be able to explore more areas of Backend development, and grow into a whole developer. Here’s to lifelong education, creating great things, and yes, hopefully meeting a few more of those data devils (and yes, we love facing them – because what’s the fun in not having them around, right?).
So, if you're a fellow backend enthusiast or someone considering the HNG Internship program, Check out our intership program at [hng](https://hng.tech/internship).
So, to all the aspiring coders, let’s mesh and compare our coding story arcs. Until next time, coding is fun and don’t forget to be amazing! | nazycodes | |
1,908,812 | How to Find the Best Digital Marketing Agency in India for Your Business | In today's digital world, it's essential for every business to maintain a robust online presence.... | 0 | 2024-07-02T11:21:27 | https://dev.to/digitalromans/how-to-find-the-best-digital-marketing-agency-in-india-for-your-business-34b0 | digitalmarketing, digitalmarketinggurgaon, digitalmarketingservice, digitalmarketingcomapny | In today's digital world, it's essential for every business to maintain a robust online presence. Whether you're a small startup or an established enterprise, digital marketing can help you reach a wider audience, engage with your customers, and ultimately drive sales. With numerous digital marketing agencies available, how do you select the ideal one for your business? In this blog, we'll guide you through the process of finding the best digital marketing agency in India to help your business thrive.
#### Why You Need a Digital Marketing Agency
Before we dive into the steps to find the best agency, let's briefly discuss why hiring a digital marketing agency is beneficial:
1. **Expertise and Experience**: Digital marketing agencies have teams of experts who specialize in various aspects of online marketing, such as SEO, social media, content creation, and PPC advertising. They offer extensive knowledge and experience.
2. **Cost-Effective**: Hiring an in-house team for digital marketing can be expensive. Agencies offer a more cost-effective solution, providing you access to a team of professionals at a fraction of the cost.
3. **Time-Saving**: Running a business is time-consuming. By outsourcing your digital marketing efforts, you can focus on your core business activities while the agency handles your online presence.
4. **Access to Latest Tools and Technologies**: Digital marketing agencies have access to advanced tools and technologies that can enhance your marketing efforts. These tools can be expensive to acquire and maintain on your own.
## Steps to Find the Best Digital Marketing Agency in India
1. **Define Your Goals and Budget**
Before you start searching for an agency, it's essential to define your marketing goals. What do you want to achieve with digital marketing? Are you looking to increase brand awareness, drive website traffic, generate leads, or boost sales? Having clear goals will help you find an agency that specializes in the areas you need.
Additionally, determine your budget. Digital marketing services can vary widely in cost, so knowing how much you're willing to spend will help narrow down your options.
2. **Research and Shortlist Agencies**
Begin by researching digital marketing agencies in India. You can do this by:
- **Online Search**: Use search engines to find agencies. Look for those that rank well for keywords related to digital marketing.
- **Recommendations**: Ask for recommendations from colleagues, business partners, or other professionals in your network.
- **Industry Publications and Awards**: Check industry publications and websites that rank and review digital marketing agencies. Awards and recognitions can also indicate an agency's credibility.
Create a shortlist of agencies that seem to match your requirements.
3. **Check Their Portfolio and Case Studies**
Once you have a shortlist, visit the agencies' websites and review their portfolios. Look for case studies and examples of their previous work. This will give you an idea of their expertise and the results they've achieved for other clients. Pay attention to:
- **Industries They Serve**: Do they have experience in your industry?
- **Types of Campaigns**: Have they run campaigns similar to what you need?
- **Results Achieved**: What kind of results have they delivered for other clients?
4. **Read Client Reviews and Testimonials**
Client reviews and testimonials can provide valuable insights into an agency's reliability and performance. Look for reviews on:
- **Google Reviews**
- **Clutch. co**
- **Facebook Reviews**
Reading what previous clients have to say about their experiences can help you gauge the agency's reputation and customer satisfaction.
5. **Evaluate Their Online Presence**
A good digital marketing agency should practice what they preach. Evaluate their online presence, including their website, blog, social media profiles, and overall branding. If they can't effectively market themselves, it's unlikely they'll be able to market your business successfully.
- **Website**: Is it professional, user-friendly, and informative?
- **Blog**: Do they regularly publish high-quality, relevant content?
- **Social Media**: Are they active and engaging on social media platforms?
6. **Schedule Consultations**
Narrow down your list to a few top contenders and schedule consultations with them. During these consultations, ask the following questions:
- **Experience and Expertise**: How long have they been in business? What are their areas of expertise?
- **Team**: Who will be working on your account? What are their qualifications and experience?
- **Approach and Strategy**: How do they plan to achieve your goals? What strategies and tactics will they use?
- **Tools and Technologies**: What tools and technologies do they use to manage and measure campaigns?
- **Reporting and Communication**: How often will they provide reports? How will they communicate with you?
Use these consultations to get a feel for their professionalism, communication style, and whether they understand your business needs.
7. **Assess Their Transparency and Communication**
Transparency and communication are crucial when working with a digital marketing agency. Ensure they are open about their processes, pricing, and expected results. They should be willing to share detailed reports and updates regularly.
8. **Compare Proposals**
After the consultations, ask the agencies to provide proposals outlining their strategies, timelines, and costs. Compare these proposals based on:
- **Strategy**: Does their approach align with your goals?
- **Timeline**: How long will it take to see results?
- **Cost**: Does the proposal fit within your budget?
- **Value**: Are they offering a comprehensive solution that provides value for money?
9. **Check Their Contract Terms**
Before signing any contract, carefully review the terms and conditions. Pay attention to:
- **Duration**: How long is the contract term?
- **Termination**: What are the terms for terminating the contract?
- **Deliverables**: What specific services and deliverables are included?
- **Payment Terms**: How and when will payments be made?
Make sure you fully understand the contract and are comfortable with its terms.
10. **Trust Your Instincts**
Finally, trust your instincts. Choose an agency that not only meets your criteria but also feels like a good fit for your business. You'll be working closely with them, so it's essential to have a good rapport and trust in their abilities.
### Conclusion
Finding the [best digital marketing agency in India](https://digitalromans.com/) for your business may seem daunting, but by following these steps, you can make an informed decision. Remember to define your goals, research and shortlist agencies, check their portfolios and reviews, evaluate their online presence, schedule consultations, compare proposals, and review contract terms. By doing so, you'll be well on your way to partnering with an agency that can help your business succeed in the digital landscape.
With the right digital marketing agency by your side, you'll be able to navigate the complexities of online marketing, reach your target audience effectively, and achieve your business goals. Good luck in your search for the perfect digital marketing partner! | digitalromans |
1,908,811 | Top 5 Must-Have Tools for Linux Users | Linux is known for its flexibility and powerful command-line tools. To make the most out of your... | 0 | 2024-07-02T11:20:55 | https://blog.rachitkhurana.tech/top-5-must-have-tools-for-linux-users | linux, productivity, tools, programming | Linux is known for its flexibility and powerful command-line tools. To make the most out of your Linux system, here are five productivity tools that can enhance your workflow.
## 1) Zoxide (`z`)
So you might be wondering what exactly is zoxide ? According to the developer, its “A smarter cd command”.
Lemme explain it with example, so for example you want to go to a project directory named `webapp1234` , and its inside a GitHub directory in the Documents directory.
So with cd, you either need to use the following commands:
```bash
cd Documents/
cd Github/
cd webapp1234/
```
or you can use the following command:
```bash
cd Documents/GitHub/webapp1234/
```
but with zoxide, you can do this with a simple simple command:
```bash
z webapp1234
```
and you will be in the webapp directory.
Isn’t this cool?
You can check it out at: [https://github.com/ajeetdsouza/zoxide](https://github.com/ajeetdsouza/zoxide)
## 2) Wakapi
Many of you may be programmers and spend a lot of your time programming and making projects. However, we often don’t know how much time have we actually spent on a particular project or on a particular day. That’s why tracking time while coding is important.
For that, we can use wakapi. Wakapi is basically an open source implementation of Wakatime. Wakatime is a closed sourced solution and has paid plans that are quite expensive. So instead you can use Wakapi.
You can install it on your local system as a service that automatically runs when your system boots. Then you can use any Wakatime extension that is available for most Code Editors/IDEs. For complete client setup guide, refer to: [https://github.com/muety/wakapi?tab=readme-ov-file#-client-setup](https://github.com/muety/wakapi?tab=readme-ov-file#-client-setup)
My dashboard of the last 6 months:
## 3) Ollama + OpenWebUI
In this world of AI, everyone uses chatgpt and various other online AI tools, however, that comes with its own limitations. Some are paid, or some have limited responses, some are slow while some are very limiting.
So that’s where ollama comes in. Ollama basically allows you to run open source models directly on your laptop.
Checkout ollama at: [https://ollama.com/](https://ollama.com/)
Once you have ollama installed, you can install any open source model from the ollama library. You can checkout the library at: [https://ollama.com/library](https://ollama.com/library)
I would suggest you to download llama3 and phi3. These 2 are really capable models.
Now that we have the models, but currently we can only use them in the terminal, but we want to use it in the browser with a ChatGPT like interface, so thats where OpenWebUI comes in.
### OpenWebUI
OpenWebUI is basically a web interface for ollama. It’s interface is very familiar and similar to ChatGPT.
Keep in mind that the speed of responses and performance depends upon your system specs and the model selected. If you have any GPU , then it will work decently, otherwise it will be quite slow.
## 4) Fish Shell
You probably might have used any terminal on Linux few times. By default, the default shell on most Distros is bash. However, there are many more shells other than bash as well. Fish Shell is one of them.
itsFOSS also published an amazing article a while back on Fish Shell, you can check it out at:
[https://itsfoss.com/fish-shell-features/](https://itsfoss.com/fish-shell-features/)
In short, fish shell has some really amazing features like:
* Syntax highlighting
* Auto Suggestions
* Easier path navigation
* Interactive history search
and much more…
## 5) distrobox
There may have been many situations when you wanted to install a software but it wasn’t compatible with your distro, but worry not, you can use distrobox. It basically allows you to use any linux distribution inside your terminal.
You can check it out at: [https://github.com/89luca89/distrobox](https://github.com/89luca89/distrobox)
As you can see, my main host OS is fedora, however, I have install multiple OS in containers using distrobox.
So, these were the 5 tools that I thought might be incredibly useful for many people in their daily lives. Each of these tools offers unique features and functionalities that can significantly enhance productivity and efficiency. Whether it's leveraging the power of a language model, optimizing terminal usage with Fish Shell, or running different Linux distributions seamlessly with Distrobox, these tools are designed to make your tech experience smoother and more enjoyable.
If you have any more suggestions or know of other tools that can be beneficial, please feel free to drop a comment and let me know. I am always on the lookout for new and innovative tools that can improve our daily workflows. Your recommendations are highly appreciated, and I would love to explore and share them with the community. Let's keep the conversation going and help each other discover the best tools out there! | dilutewater |
1,908,791 | Top Venture Builders in Germany: Leading Innovation Across Industries | Fed up! Are you aiming to create a new company but you are weak from a tech position? Are you excited... | 0 | 2024-07-02T11:17:58 | https://jetthoughts.com/blog/top-venture-builders-in-germany-leading-innovation-across-industries-startup/ | startup | Fed up! Are you aiming to create a new company but you are weak from a tech position? Are you excited to build your own software without any coding skills? Great, Venture Builders are being added now.
The pros and cons of venture builders.
--------------------------------------
Venture builders have the best tech team, thanks to which you can quickly put your thoughts into practice and turn them into existing prototypes as well as MVPs. Collaboration with venture builders decreases the risk and speeds up your journey to the target.
Be sure to include venture builders in your team before you talk to the VCs. If willing to rely on their knowledge and supplies, you can bring your funding aspirations close to the product-market fit. Through the agency of venture builders, you can make technical advancements that will push you over the finish line in your startup development.
Top venture builders in Germany:
--------------------------------
### [Rocket Internet](https://www.rocket-internet.com/)
- **Focus**: Venture builder with over 200 investments, known for scaling startups.
- **Notable Ventures**: Payflow, Bluenest, Global Savings Group.
- **Founders**: Alexander Samwer, Marc Samwer, Oliver Samwer.
- **Location**: Berlin, Germany.
### [FinLeap](https://finleap.com/)
- **Focus**: Corporate venture builder in finance.
- **Notable Ventures**: Solaris Banks, Connect, Element.
- **Founders**: Ramin Niroumand, owned by IONIQ Group.
- **Location**: Berlin, Germany, and San Francisco, USA.
### [Next Big Thing (NBT)](https://nextbigthing.ag/)
- **Focus**: IoT and Blockchain, also an operational VC, incubator, and accelerator.
- **Notable Ventures**: Assistr, Weeve, METR.
- **Founders**: Harald Zapp, Michael Bommer, Maik Käbisch.
- **Location**: Berlin, Germany.
### [Team Europe](https://teamglobal.net/)
- **Focus**: E-commerce startups.
- **Notable Ventures**: Spreadshirt, Brands4Friends.
- **Founder**: Lukasz Gadowski.
- **Location**: Berlin, Germany.
### [Etventure](https://www.etventure.de/)
- **Focus**: Builds startups and digital units for corporates across various sectors.
- **Notable Ventures**: POSpulse, mobilejob.
- **Founders**: Dr. Christian Lüdtke, Philipp Depiereux, Philipp Herrmann, owned by EY.
- **Location**: Berlin, Germany.
### [Creative Dock](https://www.creativedock.com//)
- **Focus**: Climate and health, working with large corporations.
- **Clients**: Trumpf, Vattenfall, Henkel, Baloise.
- **Founders**: Felix Staeritz, Andreas von Oettingen, Michael Stephanblome.
- **Location**: Berlin, Germany.
### [Finparx](https://finparx.com/)
- **Focus**: Ventures in finance and daily life improvements.
- **Notable Exits**: Payolution, PAY.ON.
- **Founder**: Nikolaus von Taysen.
- **Location**: Munich, Germany.
### [Heartbeat Labs](https://www.heartbeatlabs.com/)
- **Focus**: Digital health companies.
- **Notable Ventures**: FernArtz, Sinbionik.
- **Founders**: Stephanie Kaiser, owned by IONIQ group.
- **Location**: Berlin, Germany.
### [Lemonblood](http://www.lemonblood.com/)
- **Focus**: Broad startup support across industries.
- **Founder**: Antonio A. Gatti Balsarri.
- **Location**: Berlin, Germany.
### [Wattx](https://www.wattx.io/)
- **Focus**: Deep tech products solving industrial problems.
- **Notable Ventures**: Statice, Hasty, deevio.
- **Managing Directors**: Martin Mittermeier, Julius Patzelt, Marius Pfuhl.
- **Location**: Berlin, Germany.
### [Bridgemaker](https://en.bridgemaker.com/)
- **Focus**: B2B tech ideas.
- **Notable Ventures**: VAI, Goodnity.
- **Founder**: Henrike Luszick.
- **Location**: Berlin, Germany.
### [Found Fair](https://foundfair.de/)
- **Focus**: Fintech, Mobility, Marketplaces, Adtech, Medtech.
- **Founder**: Burckhardt Bonello.
- **Location**: Berlin, Germany.
### [Venture Stars](https://www.venture-stars.com/)
- **Focus**: Internet startups.
- **Notable Exits**: Miflora, Vaola, Justbool.
- **Founder**: Stefan Pfannmoeller.
- **Location**: Munich, Germany.
### [Pacemakers](https://www.pacemakers.io/)
- **Focus**: Business building from ideation to growth.
- **Partners**: Coca-Cola, Henkel.
- **Founders**: Peter Henssen, Robin Rohrmann, Julius Hansen.
- **Location**: Berlin, Germany.
### Hanse Ventures
- **Focus**: Internet sector with seed financing and expert knowledge.
- **Founder**: Jochen Maab.
- **Location**: Hamburg, Germany.
### [Mantro](https://www.mantro.net/)
- **Focus**: High-tech ventures.
- **Notable Ventures**: absence.io, oilfox.io, Werkerapp.
- **Founders**: Benjamin Schüdzig, Manfred Tropper, Markus Ortmann.
- **Location**: Munich, Germany.
### [Etribes](https://etribes.de/)
- **Focus**: Various business models, and significant revenue generation.
- **Notable Achievements**: AboutYou, Hapag Lloyd tools.
- **Founders**: Nils Seebach, Alexander Graf, Tarek Müller.
- **Location**: Berlin, Hamburg, Munich (Germany), Osijek (Croatia).
Ready to explore this game-changing approach to launching your startup? Join the discussion and share your thoughts! | jetthoughts_61 |
1,908,782 | My Web Development Journey Day-2: CSS 🎨 | In module-2 I learned CSS.The topics that I covered: 1)3 way of CSS 2)CSS... | 27,922 | 2024-07-02T11:09:32 | https://dev.to/shemanto_sharkar/my-web-development-journey-day-2-css-428k | webdev, beginners, programming, css | In module-2 I learned CSS.The topics that I covered:
1)3 way of CSS
2)CSS Syntex
3)Text-alignment
4)CSS Structure
5)CSS Selectors
6)ID vs Class
7)CSS Background Image
8)CSS Margin and Padding
9)CSS Box Shadow
10)CSS Box Model
11)Display: Inline, Block, Inline-block
I practised this by my own:
This the practise code:
```
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>My Reading List</title>
<link rel="shortcut icon" href="./images/book.png" type="image/x-icon">
<link rel="stylesheet" href="./styles/book.css">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Poppins:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&display=swap" rel="stylesheet">
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Playwrite+US+Modern:wght@100..400&display=swap" rel="stylesheet">
</head>
<body>
<div id="portion_1">
<div class="section_1">
<h1 id="name">Hi, I'm Shemanto Sharkar 👋</h1>
<p id="welcome">welcome to my website of Book List!</p>
</div>
<div class="section_2">
<button class="button"><a href="">My LinedIn</a></button>
<button class="button"><a href="">My Facebook</a></button>
<button class="button"><a href="">My Youtube</a></button>
</div>
<div class="section_3">
<img id="profile" src="./images/profile.png" alt="">
</div>
</div>
<div id="portion_2">
<p>I am studying Energy Science and Engineering at KUET. I am in my last year.Now I am taking web development couse by programming Hero.I took this course becouse it is by Jhonkar Mahbub bhai.It will help me to get a job after I am graduated in 2025.</p>
</div>
<div id="portion_3">
<img class="book" src="./images/download (1).jfif" alt="">
<img class="book" src="./images/download.jfif" alt="">
<img class="book" src="./images/images.jfif" alt="">
</div>
</body>
</html>
```
#name {
font-family: "Playwrite US Modern", cursive;
text-align: center;
color: #000000;
font-weight: bold;
font-size: 40px;
margin-bottom: 0%;
}
#welcome{
text-align: center;
font-family: "Poppins", sans-serif;
font-weight: bold;
color: #595959;
margin-top: 0%;
font-size: 30px;
}
.section_2{
text-align: center;
margin: 5%;
}
.button{
background-color: #ffea3d;
color: #ffffff;
font-family: "Poppins", sans-serif;
font-weight: bold;
font-size: 20px;
padding: 10px 20px;
border: none;
border-radius: 10px;
cursor:pointer;
}
a{
text-decoration: none;
color: #000000;
}
#profile{
display: block;
width: 300px;
margin: 0 auto;
}
#portion_2{
background-color: #ffea3d;
font-family: "Poppins", sans-serif;
font-size: medium;
padding: 2%;
margin: 5%;
border-radius: 10px;
text-align: center;
}
.book{
display: inline-block;
width: 200px;
padding: 10px;
margin-left: auto;
margin-right: auto;
border: 10px solid #ffea3d;
border-radius: 5%;
}
#portion_3{
text-align: center;
}
| shemanto_sharkar |
1,908,787 | How We Do WordPress Website Speed Optimization: Achieve Scores 100 Desktop, 97 Mobile on Google PageSpeed Insights (No Plugins) | We employ proven strategies to optimize the loading speed of our clients’ WordPress websites, without... | 0 | 2024-07-02T11:14:17 | https://www.startdesigns.com/blog/wordpress-website-speed-optimization-no-plugins-used/ | design, web, tutorial, discuss | We employ proven strategies to optimize the loading speed of our clients’ WordPress websites, without the need for a single plugin, and we draw insights from our clients’ successes.
As Google makes website speed a major factor in ranking, entrepreneurs and website owners start focusing on optimizing website speed so that they get high rank in SERPs. So one of our clients also approached us to optimize his website speed, which was very poor at the time.
We started by studying his website. After some research and study, our team of expert web designers, developers, and marketers came up with a plan to improve the website’s loading speed.
We write down the changes, updates, and optimizations we are going to make, as well as some changes that we did not discuss before to improve loading page speed.
Without taking more time, here is the process we follow to achieve 99 desktop scores and 97 mobile scores on Google PageSpeed Insights. Check report here: [GL Google PageSpeed Insights Report](https://pagespeed.web.dev/analysis/https-goodmanlantern-com/5ous7tv6gc?form_factor=mobile)
## Processes We Followed and Tricks We Used to Optimize Website Loading Speed
### 1 Pick a Speedy and Dependable Hosting Provider
Starting off, we changed to a different hosting provider than previously used by client. Quick loading is key for any website, so a solid hosting server is a must. Think about going with a reputable provider. WP Engine, CloudWays, SiteGround, or Bluehost are options.
We opted for WP Engine for our customer. A managed WordPress hosting could be the answer for peak performance.
[Discuss Your Web Redesign Project Free Today!](https://www.startdesigns.com/)
### 2 Use a Lightweight Theme
The second important step is to choose a lightweight theme, customize the theme completely, or start building a custom website. We suggest you choose the theme even if you want custom website design because themes come with basic configuration files, so you don’t need to create basic settings and configuration files.
We chose the Astra because it’s very light, and we customized it completely with custom elements as per our client’s requirements.
### 3 Optimize Images
We’re shrinking all pictures, but not their quality. Compress your images using tools like TinyPNG before they go on your site. Pick the right format for your pictures (JPEG for snapshots, PNG for colorful graphics), and remember to think about using webp format.
### 4 Minimize HTTP Requests
We optimize HTTP requests by merging files, using CSS sprites, and minimizing files.
Combine CSS and JavaScript files.
Use tools like Autoptimize to minify and combine files.
### 5 Use a Content Delivery Network (CDN)
Implement a CDN, such as Cloudflare or MaxCDN, to serve static content from servers closer to your users’ locations.
### 6 Use Async or Await
If there are elements that you want to load first and close, don’t forget the use of async and look forward to it. These functions prioritize what masses first by way of letting you highlight the crucial parts, along with the primary content. When you operate async and anticipate to wrap these essential elements’ loading process, you may make sure they will appear earlier than something else.
### 7 Load scripts after complete page loaded
We suggest you don’t load too many scripts on the first try. Our client’s website uses script-generated animation in the hero section; we use images to first show the effect and load the script after the complete page is loaded.
### 8 Don’t load sliders or any animation on the first page load
The client website has a slider section; we load it as a simple section at first, and after the entire page is loaded, we activate it with the help of some scripts.
### 9 Reduce the shifting of elements to keep CLS under control
We reduce the shifting of the HTML elements; for example, if a section height is 100 pixels in theme CSS and you want it to be 60 pixels, then you should load the first your custom CSS before the theme CSS files. This keeps CLS under control.
### 10 Use loaders
We use loaders for images and graphics, so the loader first loads, and the image appears after it. When you use loaders for search engines do not count them as graphics, this keeps the LCP low.
### 11 Reduce Redirects
Minimize the use of redirects, as they create additional HTTP requests and delay page load times.
### 12 Use a Fast and Secure DNS Provider
To reduce DNS lookup times, choose a fast DNS provider.
These are some of the techniques we used to achieve similar results for our client website, Goodman Lantern.
You can verify the page speed yourself and have faith in our efforts. If you also want to optimize your website’s loading speed, contact us today. Our team of expert web designers and developers will 100 percent help you.
Article originally posted on [https://www.startdesigns.com/blog/wordpress-website-speed-optimization-no-plugins-used/](https://www.startdesigns.com/blog/wordpress-website-speed-optimization-no-plugins-used/) | startdeesigns |
1,908,786 | Behind the Scenes: How I Tackled Connecting to Multiple Databases in Golang | The challenge Connecting your backend application to a database is a necessary step to... | 0 | 2024-07-02T11:13:57 | https://dev.to/vinsu/behind-the-scenes-how-i-tackled-connecting-to-multiple-databases-in-golang-40dl |
## The challenge
Connecting your backend application to a database is a necessary step to take if you intend on persisting data within your application to be retrieved later in the future.
There are different types of databases each with different tradeoffs or pros and cons more like the different types of dbs have usecases where they shine better and others where another option might be better or more efficient. Ultimately it is up to you the developer to choose what database to use in your particular usecase.
Two of the more popular types of databases are:
## Relational Databases (RDMS)
Often referred to as relational database management systems (RDMS). they store data in tables with predefined schemas, and they use SQL (structured query language) for defining and manipulating the data
- Examples: MySQL, PostgreSQL, Oracle Database, Microsoft SQL Server etc.
## NoSQL databases
NoSQL databases as the name suggests are databases that don't require SQL for defining and manipulating data. They are designed for flexibility, scalability, and performance. They do not require a fixed schema and handle large volumes of data and high user loads well.
- Examples: Document Stores like MongoDB, and Key-Value Stores like Redis and DynamoDB
Like I said earlier different databases have places they shine better and its easy to imagine one application having to use different databases for different things.
In this article, I'll go over how I connected a go application to both a MySQL database and a MongoDB database step by step.
## Step 1: Setting up the Project
First, I set up my Golang project using Go modules for dependency management. This involved initializing a new Go module and creating the necessary directory structure for the project.
```
mkdir muli-db-connection
cd multi-db-connection
go mod init multi-db-connection
```
## Step 2: Installing Database Drivers
Golang uses specific drivers to interact with different databases. For MySQL, I used `go-sql-driver/mysql`, and for MongoDB, I used `mongo-go-driver`. I installed these drivers using the `go get` command.
```
go get -u github.com/go-sql-driver/mysql
go get go.mongodb.org/mongo-driver/mongo
```
## Step 3: Setting up the Databases
I used Docker to run MySQL and MongoDB locally, you can download and install it from the [Docker website](https://docs.docker.com/get-docker/)
First I pulled the Docker images for MySQL and MongoDB from the Docker Hub.
```
docker pull mysql:latest
docker pull mongodb/mongodb-community-server:latest
```
Then I ran a MySQL container with the following command
```
docker run --name mysql-container -e MYSQL_ROOT_PASSWORD=rootpassword -d -p 3306:3306 mysql:latest
```
This will set up a MySQL container with the root password `rootpassword`.
Then I ran a mongoDB container with the following command
```
docker run --name mongodb-container -p 27017:27017 -d mongodb/mongodb-community-server:latest
```
## Verify the containers are running by running
```
docker ps
```
You should see both `mysql-container` and `mongodb-container` listed.
Access MySQL
To access the MySQL container with docker you can run the following command
```
docker exec -it mysql-container mysql -uroot -prootpassword
```
while in here you can run the following SQL commands to:
1. create and use a new database
```
CREATE DATABASE mydatabase;
USE mydatabase;
```
2. create a users table to read from later
```
CREATE TABLE users (
id INT AUTO_INCREMENT PRIMARY KEY,
name VARCHAR(100) NOT NULL
);
```
note: you can type `exit` to exit;
Acess MongoDB
To access the MongoDB container with mongosh (the MongoDB shell) you can run the following command
```
mongosh --port 27017
```
## Step 4 Establishing Database Connections
With the drivers installed and the local databases setup the next step was to establish connections to both databases. I created a `db` package to manage my database connections. In this package, I wrote seperate functions for connecting to MySQL and MongoDB.
## Connecting to MySQL
```
package db
import (
"context"
"log"
"time"
"database/sql"
_ "github.com/go-sql-driver/mysql"
"go.mongodb.org/mongo-driver/mongo"
"go.mongodb.org/mongo-driver/mongo/options"
)
func ConnectMySQL() (*sql.DB, error) {
dsn := "root:rootpassword@tcp(localhost:3306)/mydatabase"
db, err := sql.Open("mysql", dsn)
if err != nil {
log.Fatalf("Error opening database: %v", err)
return nil, err
}
if err := db.Ping(); err != nil {
log.Fatalf("Error connecting to the database: %v", err)
return nil, err
}
log.Println("Connected to MySQL successfully!")
return db, nil
}
```
## Connecting to MongoDB
```
...
func ConnectMongoDB() (*mongo.Client, error) {
clientOptions := options.Client().ApplyURI("mongodb://localhost:27017")
client, err := mongo.NewClient(clientOptions)
if err != nil {
log.Fatalf("Error creating MongoDB client: %v", err)
return nil, err
}
ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
defer cancel()
if err := client.Connect(ctx); err != nil {
log.Fatalf("Error connecting to MongoDB: %v", err)
return nil, err
}
if err := client.Ping(ctx, nil); err != nil {
log.Fatalf("Error pinging MongoDB: %v", err)
return nil, err
}
log.Println("Connected to MongoDB successfully!")
return client, nil
}
```
## Step 5: Using the Connections
With the connections established, the next step was to use these connections in my application. I created a simple function to demonstrate querying both databases.
```
package main
import (
"context"
"fmt"
"log"
"multi-db-connection/db"
"go.mongodb.org/mongo-driver/bson"
)
func main() {
// Connect to MySQL
mysqlDB, err := db.ConnectMySQL()
if err != nil {
log.Fatalf("Could not connect to MySQL: %v", err)
}
defer mysqlDB.Close()
// Connect to MongoDB
mongoClient, err := db.ConnectMongoDB()
if err != nil {
log.Fatalf("Could not connect to MongoDB: %v", err)
}
defer mongoClient.Disconnect(context.Background())
// Query MySQL
rows, err := mysqlDB.Query("SELECT id, name FROM users")
if err != nil {
log.Fatalf("Error querying MySQL: %v", err)
}
defer rows.Close()
for rows.Next() {
var id int
var name string
if err := rows.Scan(&id, &name); err != nil {
log.Fatalf("Error scanning MySQL row: %v", err)
}
fmt.Printf("MySQL User: %d, %s\n", id, name)
}
// Query MongoDB
collection := mongoClient.Database("testdb").Collection("users")
cursor, err := collection.Find(context.Background(), bson.M{})
if err != nil {
log.Fatalf("Error querying MongoDB: %v", err)
}
defer cursor.Close(context.Background())
for cursor.Next(context.Background()) {
var user bson.M
if err := cursor.Decode(&user); err != nil {
log.Fatalf("Error decoding MongoDB document: %v", err)
}
fmt.Printf("MongoDB User: %v\n", user)
}
}
```
## Step 6: Testing and debugging
Testing the application involved running the main function and ensuring that both databases were queried successfully. Debugging was a crucial part of this process, as I encountered various issues such as connection timeouts, incorrect credentials, and network issues, it wasn't all smooth sailing but I guess thats where learning happens. Logging detailed error messages helped identify and resolve these problems quickly.
## Conclusion
Connecting to multiple databases in Golang was a challenging yet rewarding experience. It pushed me to understand the intricacies of database drivers, connection handling, and error management in Golang. This project was a significant step in my backend development journey, and I am excited to continue building on this foundation during the [HNG Internship]( https://hng.tech/internship).
The HNG Internship has always been a beacon of learning and growth for me. While I didn't finish the internship multiple times in the past, it provided invaluable knowledge that I still use today. Now, as I embark on this new journey into backend development, I look forward to the internship being an equally enriching supplement to my learning. I am eager to tackle new challenges, learn from experienced mentors, and ultimately become a more well-rounded developer.
Who knows maybe I'll be a finalist this year 🤞🏾.
link to project on github:
[https://github.com/vinuch/go-multi-db-connection](https://github.com/vinuch/go-multi-db-connection)
links to the HNG Internship:
[https://hng.tech/internship]( https://hng.tech/internship), [https://hng.tech/hire](https://hng.tech/hire)
Do check them out, thank you!. | vinsu | |
1,885,832 | Managing Metadata in Next.js 14 for Enhanced SEO and User Experience | Introduction In Next.js 14, there are two primary ways to manage metadata for your... | 0 | 2024-07-02T11:13:43 | https://blog.devarshi.dev/managing-metadata-in-nextjs14-for-seo | nextjs, webdev, beginners, tutorial | ## Introduction
In Next.js 14, there are two primary ways to manage metadata for your application: using a static `metadata` object or a dynamic `generateMetadata` function. Below is a detailed guide on how to utilize both options effectively.
This guide provides an in-depth look at both approaches, helping you understand how to effectively implement metadata in your Next.js application.
## Next.js Demo with Metadata Output
In this live example, we'll create a simple Next.js application showcasing the usage of metadata. Then, we'll view the rendered output in the browser and visualise the metadata in action.
We start by creating a new Next.js project with `create-next-app`
```bash
npx create-next-app@latest
```
Here's the options I chose while creating it.
Add this sample code in the following block and let's preview it in the browser.
**Code:**
**Output:**
And here's the browser output with get with the tags, keep reading the entire article to see how you could implement in your code.
### Static Metadata
To define static metadata, you export a `Metadata` object from a `layout.ts` or `page.ts` file using the App Router.
Example:
```typescript
import { Metadata } from 'next'
export const metadata: Metadata = {
title: 'Static Page Title',
description: 'This is a static page description',
}
export default function Page() {}
```
This method is suitable when the metadata does not depend on runtime information.
### Dynamic Metadata
Dynamic metadata allows you to generate metadata based on dynamic data, such as route parameters or fetched data.
Example:
```typescript
import { Metadata, ResolvingMetadata } from 'next'
type Props = {
params: { id: string }
searchParams: { [key: string]: string | string[] | undefined }
}
export async function generateMetadata(
{ params, searchParams }: Props,
parent: ResolvingMetadata
): Promise<Metadata> {
const id = params.id
const product = await fetch(`https://api.example.com/products/${id}`).then((res) => res.json())
const previousImages = (await parent).openGraph?.images || []
return {
title: product.name,
description: product.description,
openGraph: {
images: [product.imageUrl, ...previousImages],
},
}
}
export default function Page({ params, searchParams }: Props) {}
```
This method is useful when the metadata depends on dynamic data or needs to extend parent metadata.
### Key Points
- **Server Components Only**: Both `metadata` and `generateMetadata` are only supported in Server Components.
- **Single Export Rule**: You cannot export both the `metadata` object and `generateMetadata` function from the same route segment.
### Metadata Fields
Next.js provides a variety of metadata fields to customize the metadata of your application comprehensively.
#### Title
- **String**
```typescript
export const metadata: Metadata = {
title: 'Next.js Application',
}
```
Output: `<title>Next.js Application</title>`
- **Template Object**
```typescript
export const metadata: Metadata = {
title: {
template: '%s | Next.js',
default: 'Next.js',
},
}
```
Output in child routes: `<title>About | Next.js</title>`
- **Absolute**
```typescript
export const metadata: Metadata = {
title: {
absolute: 'About Us',
},
}
```
Output: `<title>About Us</title>`
#### Description
```typescript
export const metadata: Metadata = {
description: 'The React Framework for the Web',
}
```
Output: `<meta name="description" content="The React Framework for the Web" />`
#### Basic Fields
```typescript
export const metadata: Metadata = {
generator: 'Next.js',
applicationName: 'Next.js App',
keywords: ['Next.js', 'React', 'JavaScript'],
authors: [{ name: 'Author Name', url: 'https://example.com' }],
}
```
Output:
```html
<meta name="generator" content="Next.js" />
<meta name="application-name" content="Next.js App" />
<meta name="keywords" content="Next.js,React,JavaScript" />
<meta name="author" content="Author Name" />
<link rel="author" href="https://example.com" />
```
#### Open Graph
```typescript
export const metadata: Metadata = {
openGraph: {
title: 'Next.js',
description: 'The React Framework for the Web',
url: 'https://nextjs.org',
siteName: 'Next.js',
images: [
{
url: 'https://nextjs.org/og.png',
width: 800,
height: 600,
},
],
locale: 'en_US',
type: 'website',
},
}
```
Output:
```html
<meta property="og:title" content="Next.js" />
<meta property="og:description" content="The React Framework for the Web" />
<meta property="og:url" content="https://nextjs.org/" />
<meta property="og:site_name" content="Next.js" />
<meta property="og:locale" content="en_US" />
<meta property="og:image" content="https://nextjs.org/og.png" />
<meta property="og:image:width" content="800" />
<meta property="og:image:height" content="600" />
```
#### Twitter
```typescript
export const metadata: Metadata = {
twitter: {
card: 'summary_large_image',
title: 'Next.js',
description: 'The React Framework for the Web',
images: ['https://nextjs.org/og.png'],
},
}
```
Output:
```html
<meta name="twitter:card" content="summary_large_image" />
<meta name="twitter:title" content="Next.js" />
<meta name="twitter:description" content="The React Framework for the Web" />
<meta name="twitter:image" content="https://nextjs.org/og.png" />
```
#### Robots
```typescript
export const metadata: Metadata = {
robots: {
index: false,
follow: true,
googleBot: {
index: true,
follow: false,
},
},
}
```
Output:
```html
<meta name="robots" content="noindex, follow" />
<meta name="googlebot" content="index, nofollow" />
```
#### MetadataBase
`metadataBase` allows setting a base URL prefix for metadata fields that require a fully qualified URL.
Example:
```typescript
export const metadata: Metadata = {
metadataBase: new URL('https://example.com'),
openGraph: {
images: '/og-image.png',
},
}
```
Output:
```html
<meta property="og:image" content="https://example.com/og-image.png" />
```
### Best Practices
- **Use Static Metadata When Possible**: If metadata doesn't depend on runtime information, prefer static metadata for simplicity.
- **Dynamic Metadata for Dynamic Data**: Use `generateMetadata` for routes where metadata depends on dynamic data or needs to extend parent metadata.
- **Combine Metadata Fields**: Utilize a combination of different metadata fields to ensure comprehensive metadata coverage for SEO and social media integration.
- **Utilize `metadataBase`**: Set a `metadataBase` in your root layout to simplify URL-based metadata field definitions.
## Conclusion
By following these guidelines, you can effectively manage metadata in your Next.js 14 application, enhancing both SEO and user experience.
Thank you for reading! If you found this blog post helpful, please consider sharing it with others who might benefit. Feel free to check out my other blog posts and visit my socials!
- [Profile](https://bio.link/devarshishimpi)
- [Linkedin](https://linkedin.com/in/devarshi-shimpi)
- [Twitter](https://twitter.com/devarshishimpi)
- [Youtube](https://youtube.com/@devarshishimpi)
- [Hashnode](https://devarshishimpi.hashnode.dev)
- [DEV](https://dev.to/devarshishimpi)
### Read more
- [What Are Docker Images And How To Use Them](https://blog.devarshi.dev/what-are-docker-images-and-how-to-use-them)
- [Creating Your First Droplet - DigitalOcean Tutorials](https://blog.devarshi.dev/creating-your-first-droplet-digitalocean-tutorials)
- [Setting Up An Ubuntu EC2 Instance From Scratch on AWS](https://blog.devarshi.dev/setting-up-an-ubuntu-ec2-instance-from-scratch-on-aws) | devarshishimpi |
1,908,785 | CI/CD pipeline using Jenkins and Docker | Today we will be creating a CI/CD pipeline in Jenkins which fetches code from github and creates an... | 0 | 2024-07-02T11:11:53 | https://dev.to/pankaj892/cicd-pipeline-using-jenkins-and-docker-2cbk | jenkins, docker | Today we will be creating a CI/CD pipeline in Jenkins which fetches code from github and creates an image from Dockerfile and runs our app in a docker container and terminates automatically after scheduled time
####1. Creating EC2 instances
I have used AWS EC2 to launch an ubuntu instance which comes under free tier you can try it on your local machine or use a VM from any public cloud provider
Now connect to the instance
####2. Setting up Jenkins & Docker
We need to update our installation package manager
```
$ sudo apt update
```
Jenkins needs java to run so we'll proceed with installing Java first
```
$ sudo apt install openjdk-11-jre
```
Check if java is installed correctly
Now we download Jenkins using curl command
```
$ curl -fsSL https://pkg.jenkins.io/debian/jenkins.io.key | sudo tee \ /usr/share/keyrings/jenkins-keyring.asc > /dev/null
```
We add it to our package manager
```
$ echo deb [signed-by=/usr/share/keyrings/jenkins-keyring.asc] \ https://pkg.jenkins.io/debian binary/ | sudo tee \ /etc/apt/sources.list.d/jenkins.list > /dev/null
```
Lets update our package manager once
```
$ sudo apt-get update
```
Now install jenkins
```
$ sudo apt-get install jenkins
```
Before we can use jenkins we need to enable it first
```
$ sudo systemctl enable jenkins
```
Start jenkins server
```
$ sudo systemctl start jenkins
```
Check status of jenkins
```
$ sudo systemctl status jenkins
```
You would get a response like this
Jenkins runs on port 8080 by default go to localhost:8080 to access it.
Since I have a VM provisioned in the cloud I need to open port 8080 to allow connections
I went to Network security groups and added the port number I want to access.
Since I don't want everyone to able to access jenkins I have limited the port to only a single host
Now when I login to port 8080 I am greeted with a login screen of jenkins
Now to login we need credentials
Username is admin
password can be found through the following command
```
$ sudo cat /var/lib/jenkins/secrets/initialAdminPassword
```
After logging into jenkins change your password and jenkins would ask to install plugins let it install them
Now we are greeted with a screen like this click on new item
Since I plan to keep it simple click on freestyle project
After adding the name for you app add your github repo you want to connect
After adding a repo we need to tell jenkins how to access the repo and give it required permission so it can fetch the code from repo
To achieve this I have used SSH keys simple generate a ssh key and add the public key in github
Now we need to add private key in jenkins so that it can authenticate with github and pull code from our repo.
Click on add below credentials and choose Jenkins
Give a name to you credential and add the private key
Before we move to next step install a plugin called Github Integration available in Jenkins you can do this by going to manage jenkins and selecting plugins and search for the extension
Now add the steps to build the app and run it. Since our app runs on node.js I will be using a docker container. I have created a Dockerfile
to do this.
I am using shell scripting to run the container in a shell and exit it
The commands in above image do the following things:
* Build the docker image
* Run the app in a container on port 8000
* The app will be live for 5 minutes
* After that the container is stopped and removed from the machine
The Build ID with a $ is an environment variable which changes according to build of jenkins so we get a new container on every run and there won't be any problems as we won't be running same container everytime
Click Save when done
We need docker to run the app if you don't have install it on your machine
```
$ sudo apt install docker.io
```
We also need a Dockerfile
You can find it on my repository [here](https://github.com/pankaj892/node-jenkins-cicd/blob/main/Dockerfile)
Dockerfile does the following:
* It pulls the latest node image from DockerHub
* The work directory is set as app
* It runs npm install and all libraries and packages are downloaded
* It exposes port 8000 for our app
* It runs the command `node app.js` in a shell
Lets move on to next stage
####3. Configuring Github
We need to make sure that when a change is detected in our repo jenkins runs the pipeline automatically we use webhooks to achieve this
Go to Settings > Webhooks for your repo not your account
Now add url of your jenkins where it is hosted followed by /github-webhook/ and click on save
####4. Testing our app
Now lets do a dry run and see if our pipeline works as expected
Click on build now to run the pipeline
Build has started
I expect the container name to end with build number let's check
It is working as expected
And pipeline is successful since we can see our app
Now lets change something in repo and see if jenkins picks it up and runs the pipeline
I changed the background and some text
It is working as expected
We have completed this project successfully
If you have any questions comment down below I'll be happy to help
| pankaj892 |
1,908,784 | The Evolution of Accounting: What UAE Businesses Need to Know | Accountancy today is different from what it used to be and the UAE companies must adapt to the... | 0 | 2024-07-02T11:10:46 | https://dev.to/uaemainland/the-evolution-of-accounting-what-uae-businesses-need-to-know-1gg7 | discuss |
Accountancy today is different from what it used to be and the UAE companies must adapt to the changes for the survival of their companies. This is because as we move towards 2024, it is pivotal to identify how the forecasting trends are influencing accounting & bookkeeping in UAE. Accurate information can be useful for managing an organization’s activities, implementing measures in compliance with the legislation, and planning a company’s financial performance.
**Embracing Digital Transformation**
The fourth revolution is the migration of accounting to technology, where most of the activities are done using online platforms. Cloud accounting software is a rapidly progressing tool in financial information management that also involves automation and artificial intelligence. These technologies not only enhance rates, speed, and productivity, but more importantly, they eliminate some human mistakes.
**The Rise of AI and Automation**
Thus, technologies such as AI and automation are no longer concepts, but rather greatly becoming solutions in accounting. They can perform monotonous jobs like data input, processing of invoices, checks, and balance sheet reconstruction with unmatched accuracy and swiftness. This relieves accountants of activities such as form preparation to engage in more valuable work like analysis and advice-giving. The adoption of AI in firms providing **[accounting and bookkeeping services in UAE](https://uaemainland.com/accounting-bookkeeping-services-in-uae/)**; brings improvement in the market services to the clients and improved deeper understanding of their financial position.
**Compliance and Regulatory Changes**
Staying compliant with the ever-changing regulations is a top priority for businesses. In the UAE, VAT compliance and adherence to local tax laws are critical. The future of accounting will see more robust systems to ensure businesses remain compliant. Leveraging advanced accounting software that automatically updates to reflect regulatory changes can save businesses time and reduce the risk of non-compliance penalties.
**The Importance of Cybersecurity**
With the increased reliance on digital platforms comes the need for robust cybersecurity measures. Financial data is a prime target for cyber-attacks, and protecting this information is paramount. Businesses in the UAE must invest in strong cybersecurity protocols to safeguard their accounting and bookkeeping systems. This not only protects sensitive data but also builds trust with clients and stakeholders.
**Skills of the Future Accountant**
As the landscape of accounting changes, so do the skills required. Future accountants will need a blend of traditional accounting knowledge and tech-savvy capabilities. Proficiency in using accounting software, understanding data analytics, and staying updated with the latest tech trends will be crucial. Companies providing accounting and bookkeeping services in UAE should prioritize continuous training and development for their staff to stay competitive.
**The Final Words**
The future of accounting in the UAE is bright and full of opportunities for those willing to adapt and evolve. Embracing digital transformation, leveraging AI and automation, staying compliant with regulatory changes, and investing in cybersecurity are all vital steps. By focusing on these areas, businesses can enhance their **[accounting & bookkeeping in UAE](https://uaemainland.com/accounting-bookkeeping-services-in-uae/)**, ensuring accuracy, compliance, and strategic financial management. | uaemainland |
1,908,780 | Automating User and Group Management with a Bash Script | Automating User and Group Management with a Bash Script inspired by HNG . As a SysOps... | 0 | 2024-07-02T11:07:21 | https://dev.to/highbee/automating-user-and-group-management-with-a-bash-script-2il0 | ## Automating User and Group Management with a Bash Script
inspired by [HNG ](https://hng.tech/internship).
As a SysOps engineer, one of your routine tasks involves managing users and groups on a server. This can be time-consuming and prone to errors, especially when dealing with many users. Automation is the key to efficiency and reliability. This article will walk you through a Bash script that automates creating users and groups, setting up home directories with appropriate permissions, generating random passwords, and logging all actions.
This project was inspired by HNG internship 11, DevOps trcak of stage one.
visit [HNG WEBSITE](https://hng.tech/premium) to learn more about the program
### Overview
1. Creates users and their groups.
2. Adds users to additional specified groups.
3. Sets up home directories with correct permissions and ownership.
4. Generates random passwords for users.
5. Logs all actions to /var/log/user_management.log.
Stores generated passwords securely in /var/secure/user_passwords.txt
## A bash script create_users.sh will be created:
The script, create_users.sh, reads a text file containing usernames and their associated groups. Each line in the file is formatted as user;groups, where groups are delimited by commas. The script performs the following tasks:
**Example Input File**
```
light;sudo,dev,www-data
idimma;sudo
mayowa;dev,www-data
```
**The script**
Below is the complete script
```
#!/bin/bash
# Define log and password files
LOG_FILE="/var/log/user_management.log"
PASSWORD_FILE="/var/secure/user_passwords.txt"
# Create log and password files if they don't exist
touch $LOG_FILE
mkdir -p /var/secure
touch $PASSWORD_FILE
# Function to log messages
log_message() {
echo "$(date +'%Y-%m-%d %H:%M:%S') - $1" | tee -a $LOG_FILE
}
# Function to generate random password
generate_password() {
tr -dc A-Za-z0-9 </dev/urandom | head -c 12 ; echo ''
}
# Check if the input file is provided
if [ $# -ne 1 ]; then
echo "Usage: $0 <input_file>"
exit 1
fi
# Read the input file
INPUT_FILE=$1
# Check if the input file exists
if [ ! -f $INPUT_FILE ]; then
echo "Input file not found!"
exit 1
fi
while IFS=';' read -r username groups; do
# Remove leading and trailing whitespaces
username=$(echo $username | xargs)
groups=$(echo $groups | xargs)
if id "$username" &>/dev/null; then
log_message "User $username already exists. Skipping..."
continue
fi
# Create a personal group for the user
groupadd $username
if [ $? -ne 0 ]; then
log_message "Failed to create group $username."
continue
fi
log_message "Group $username created successfully."
# Create user and add to personal group
useradd -m -g $username -s /bin/bash $username
if [ $? -ne 0 ]; then
log_message "Failed to create user $username."
continue
fi
log_message "User $username created successfully."
# Create additional groups if they don't exist and add user to groups
IFS=',' read -ra group_array <<< "$groups"
for group in "${group_array[@]}"; do
group=$(echo $group | xargs)
if [ -z "$group" ]; then
continue
fi
if ! getent group $group >/dev/null; then
groupadd $group
if [ $? -ne 0 ]; then
log_message "Failed to create group $group."
continue
fi
log_message "Group $group created successfully."
fi
usermod -aG $group $username
log_message "User $username added to group $group."
done
# Set up home directory permissions
chmod 700 /home/$username
chown $username:$username /home/$username
log_message "Permissions set for home directory of $username."
# Generate random password and store it
password=$(generate_password)
echo "$username:$password" | chpasswd
echo "$username:$password" >> $PASSWORD_FILE
log_message "Password set for user $username."
done < "$INPUT_FILE"
log_message "User and group creation process completed."
exit 0
```
**Detailed Explanation**
Let's break down the script line by line to understand how it works.
**1. Shebang and Definition**s
```
#!/bin/bash
LOG_FILE="/var/log/user_management.log"
PASSWORD_FILE="/var/secure/user_passwords.txt"
```
The shebang (#!/bin/bash) indicates that the script should be executed using the Bash shell.
LOG_FILE and PASSWORD_FILE specify the paths for the log and password files.
**2. Creating Log and Password Files**
```
touch $LOG_FILE
mkdir -p /var/secure
touch $PASSWORD_FILE
```
touch $LOG_FILE creates the log file if it doesn't exist.
mkdir -p /var/secure creates the directory /var/secure if it doesn't exist.
touch $PASSWORD_FILE creates the password file if it doesn't exist.
**3. Logging Function**
```
log_message() {
echo "$(date +'%Y-%m-%d %H:%M:%S') - $1" | tee -a $LOG_FILE
}
```
'log_message' is a function that logs messages with a timestamp to both the log file and the terminal.
**4. Password Generation Function**
```
generate_password() {
tr -dc A-Za-z0-9 </dev/urandom | head -c 12 ; echo ''
}
```
This function generates a random 12-character alphanumeric password.
**5. Input File Check**
```
if [ $# -ne 1 ]; then
echo "Usage: $0 <input_file>"
exit 1
fi
INPUT_FILE=$1
if [ ! -f $INPUT_FILE ]; then
echo "Input file not found!"
exit 1
fi
```
The script checks if exactly one argument (the input file) is provided and if the file exists.
**6. Reading the Input File**
```
while IFS=';' read -r username groups; do
username=$(echo $username | xargs)
groups=$(echo $groups | xargs)
```
his loop reads the input file line by line, splitting each line into username and groups using ; as the delimiter.
xargs removes leading and trailing whitespaces.
**7. Checking for Existing Users**
```
if id "$username" &>/dev/null; then
log_message "User $username already exists. Skipping..."
continue
fi
```
This checks if the user already exists and logs a message if they do, then skips to the next iteration
**8. Creating Personal Group and User**
```
groupadd $username
if [ $? -ne 0 ]; then
log_message "Failed to create group $username."
continue
fi
log_message "Group $username created successfully."
useradd -m -g $username -s /bin/bash $username
if [ $? -ne 0 ]; then
log_message "Failed to create user $username."
continue
fi
log_message "User $username created successfully."
```
groupadd $username creates a personal group for the user.
useradd -m -g $username -s /bin/bash $username creates the user with the specified home directory and shell.
**9. Adding User to Additional Groups**
```
IFS=',' read -ra group_array <<< "$groups"
for group in "${group_array[@]}"; do
group=$(echo $group | xargs)
if [ -z "$group" ]; then
continue
fi
if ! getent group $group >/dev/null; then
groupadd $group
if [ $? -ne 0 ]; then
log_message "Failed to create group $group."
continue
fi
log_message "Group $group created successfully."
fi
usermod -aG $group $username
log_message "User $username added to group $group."
done
```
This splits the groups string into an array and iterates over each group, creating the group if it doesn't exist and adding the user to it.
**10. Setting Up Home Directory Permissions**
```
chmod 700 /home/$username
chown $username:$username /home/$username
log_message "Permissions set for home directory of $username."
```
chmod 700 /home/$username sets the permissions so that only the user can access their home directory.
chown $username:$username /home/$username sets the ownership of the home directory.
**11. Generating and Storing Passwords**
```
password=$(generate_password)
echo "$username:$password" | chpasswd
echo "$username:$password" >> $PASSWORD_FILE
log_message "Password set for user $username."
```
This generates a random password for the user, sets it, and securely stores it
**12. Completing the Process**
```
done < "$INPUT_FILE"
log_message "User and group creation process completed."
exit
```
| highbee | |
1,908,779 | Laravel Filament: get resource table data by authenticated id | To restrict the display of resources in a Filament resource based on the user_id of the authenticated... | 0 | 2024-07-02T11:06:22 | https://dev.to/johndivam/laravel-filament-get-resource-table-data-by-authenticated-id-15j7 | laravel, filament, webdev, php | To restrict the display of resources in a Filament resource based on the user_id of the authenticated user, you can modify the getEloquentQuery() method in your Filament resource class. Here’s how you can do it:
```
public static function getEloquentQuery(): Builder{
return parent::getEloquentQuery()->where('user_id',auth()->id());
}
```
| johndivam |
1,908,778 | Selling on Telegram | Hi. I would like to know if I can sell physical goods on telegram? If yes, can someone here... | 0 | 2024-07-02T11:05:32 | https://dev.to/veryaeryn/selling-on-telegram-2md5 | Hi. I would like to know if I can sell physical goods on telegram? If yes, can someone here develop/create my store? Please send me your proposal and quotation this email secmotosupplies@gmail.com. Thank you. | veryaeryn | |
1,908,777 | Deploying Odoo Applications: A Streamlined Journey from Development to Production | Odoo, the open-source ERP (Enterprise Resource Planning) platform, has become a popular choice for... | 0 | 2024-07-02T11:04:01 | https://dev.to/malihaanjum_art_44146d5b5/deploying-odoo-applications-a-streamlined-journey-from-development-to-production-2ldd | odoo, odoodev, odoodevelopment | Odoo, the open-source ERP (Enterprise Resource Planning) platform, has become a popular choice for businesses seeking a customizable and scalable solution. Its modular design allows for tailored functionalities, making it adaptable to diverse industry needs. But after the development phase, a crucial step remains: deploying your custom Odoo application to a production environment.
This guest post will guide you through the deployment process, from the development stage to a successful production launch. We'll explore key considerations, best practices, and valuable tips to ensure a smooth transition.
## Gearing Up for Deployment: Planning Makes Perfect
Before diving into the technical aspects, planning is paramount. Here's what an [Odoo development company](https://www.manystrategy.com/odoo-development/) or your in-house team should consider:
**Environment Setup:** Define your deployment environment. Will it be on-premise, cloud-based, or a hybrid model? Each option has its advantages and limitations. Consider factors like scalability, security, and ongoing maintenance costs.
**Version Control:** Implement a robust version control system (VCS) like Git to track code changes, revert to previous versions if necessary, and collaborate effectively during deployment.
**Testing Strategy:** Establish a comprehensive testing strategy. Unit tests ensure individual modules function as intended, while integration tests verify proper interaction between modules. User Acceptance Testing (UAT) with real users provides invaluable feedback on the overall user experience.
**Deployment Checklist:** Create a detailed deployment checklist outlining the steps involved, from preparing the production server to configuring databases and applying security measures. This ensures a systematic and error-free process.
**The Deployment Journey:** From Development to Production
Now, let's delve into the actual deployment stages:
## Preparing the Production Server:
**Server Configuration:** Ensure the production server meets the hardware and software requirements for your Odoo application. Install the necessary dependencies, such as Python and PostgreSQL database servers.
**Security Configuration:** Implement robust security measures. This includes hardening the server by disabling unnecessary services, configuring firewalls, and enforcing strong passwords.
Transferring Code:
**Secure Code Transfer:** Utilize secure methods like SCP or Git to transfer the application code from the development environment to the production server. This ensures the code integrity remains intact.
Database Management:
**Database Migration:** If you've used a separate database for development, you'll need to migrate the data to the production database. Consider implementing a backup strategy to ensure data recovery in case of unforeseen events.
Configuration and Customization:
**System Configuration:** Configure system settings like email servers, logging levels, and security parameters specific to the production environment.
**Customization Deployment:** If you've developed custom modules or functionalities, deploy them on the production server and ensure they integrate seamlessly with the core Odoo application.
Testing and Validation:
**Production Testing:** Conduct thorough testing on the production environment, replicating user journeys and functionalities used during UAT. This verifies the application's stability and performance under real-world conditions.
Deployment and Go-Live:
**Final Checks:** Perform final checks on all aspects before launching the application in production. Ensure database connectivity, security measures, and all functionalities are operational.
Post-Deployment Monitoring:
**Performance Monitoring:** Actively monitor the application's performance after deployment. Track metrics like response times, resource usage, and error logs. Proactive monitoring helps identify and address potential issues early on.
## Continuous Integration and Delivery (CI/CD):
Streamlined Updates: Consider implementing a CI/CD pipeline to automate the deployment process. This allows for faster updates, reduced errors, and a more streamlined workflow for future deployments.
Leveraging Odoo Development Services for a Seamless Transition
Deploying an Odoo application requires expertise and careful planning. Partnering with a reputable Odoo development company can significantly benefit your organization. Here's how:
**Experienced Professionals:** Odoo development teams possess in-depth knowledge of the platform, its functionalities, and best practices. They can navigate potential challenges and ensure a smooth deployment process.
**Automated Solutions:** Many Odoo development companies utilize automated tools and scripts to streamline deployments. This reduces the risk of human error and ensures consistency across deployments.
**Post-Deployment Support:** A reliable Odoo development partner offers ongoing support after deployment. This includes resolving technical issues, assisting with customizations, and providing guidance on future upgrades.
By following these strategies and potentially collaborating with an Odoo development company, you can ensure a successful deployment of your custom Odoo application. Remember, a well-planned and executed deployment is crucial for maximizing the potential of your Odoo solution
## Conclusion: A Streamlined Path to Success
Deploying an Odoo application from development to production can seem daunting, but with careful planning and a well-defined process, it can be a smooth and successful journey. By following the key considerations, best practices, and valuable tips outlined in this guest post, you'll be well-equipped to navigate the deployment process effectively.
Here's a final recap of a successful Odoo application deployment:
**Prioritize planning:** Define your environment, implement version control, establish a testing strategy, and create a deployment checklist.
**Prepare the production server: **Ensure proper configuration, and security measures, and meet hardware/software requirements.
Transfer code securely: Utilize secure methods like SCP or Git to transfer the application code.
**Manage the database:** Migrate data and implement a data backup strategy.
**Configure and customize: **Set up system settings, deploy custom modules, and ensure seamless integration.
Test and validate: Conduct thorough testing on the production environment.
**Go live
and monitor:** Launch the application with final checks and actively monitor performance.
**Embrace CI/CD: **Consider implementing a CI/CD pipeline for automated deployments.
Remember, partnering with an experienced Odoo development company can provide valuable expertise, automated solutions, and ongoing support throughout your Odoo journey. This ensures a smooth deployment, maximizes the potential of your Odoo application, and paves the way for continued success in the long run.
Ready to embark on your Odoo deployment journey? Leverage the power of Odoo development services and transform your business with a streamlined and efficient ERP solution. | malihaanjum_art_44146d5b5 |
1,908,776 | Transform Your Living Space with Customizable Pleated Blinds | Pleated blinds are versatile window coverings that can significantly enhance the aesthetic appeal... | 0 | 2024-07-02T11:03:20 | https://dev.to/joshuakim0946/transform-your-living-space-with-customizable-pleated-blinds-2jfe |
Pleated blinds are versatile window coverings that can significantly enhance the aesthetic appeal and functionality of any living space. From their customizable designs to their practical benefits, pleated blinds offer homeowners a stylish way to control light, enhance privacy, and improve energy efficiency. This article explores how customizable pleated blinds can transform your home, covering their features, benefits, installation tips, and more.
**Introduction to Pleated Blinds
**
Pleated blinds are characterized by their neat, folded appearance when raised and their ability to stack compactly at the top of the window when lowered. They are available in a wide range of fabrics, colors, and patterns, making them highly customizable to suit different interior styles and preferences.
**Enhancing Aesthetic Appeal
**
One of the primary reasons homeowners choose pleated blinds is their aesthetic versatility. Whether your décor theme is contemporary, traditional, or minimalist, pleated blinds can be tailored to complement your existing furnishings. The variety of fabric choices allows you to achieve the desired look, whether you prefer sheer fabrics for soft light diffusion or blackout fabrics for complete light control.
**Practical Benefits of Pleated Blinds
**
Beyond their visual appeal, pleated blinds offer several practical benefits:
**Light Control:** Adjusting the angle of pleated blinds allows you to regulate the amount of natural light entering your room. This flexibility is particularly beneficial in spaces where varying light levels are desired throughout the day.
**Privacy:** By lowering the blinds, you can enjoy enhanced privacy without completely blocking outside views. This makes pleated blinds ideal for ground-level rooms or windows facing busy streets.
**Energy Efficiency:** The insulating properties of pleated blinds help in maintaining comfortable indoor temperatures year-round. In winter, they reduce heat loss through windows, while in summer, they prevent solar heat gain, thereby reducing the workload on heating and cooling systems.
**Customization Options**
Pleated blinds can be customized in various ways to meet specific functional and aesthetic requirements:
**Fabric Choices:** From light-filtering to blackout fabrics, as well as moisture-resistant options for bathrooms and kitchens, there's a fabric type suitable for every room in your home.
**Operating Mechanisms:** Choose between manual operation with cords or chains and motorized options for added convenience and child safety.
Design Features: Consider specialty shapes or custom sizing to fit uniquely shaped windows or larger expanses of glass.
**Installation Tips**
Installing pleated blinds is straightforward, but it's essential to follow manufacturer guidelines for the best results:
**Measure Accurately:** Measure the width and height of your windows accurately to ensure the blinds fit perfectly.
Mounting Options: Decide whether to mount the blinds inside the window frame (recess mount) or outside (surface mount) based on your preference and window type.
**Safety Considerations:** Ensure cords and chains are secured and out of reach of children and pets, or opt for cordless or motorized options for added safety.
**Conclusion
**Customizable pleated blinds offer a blend of style, functionality, and practicality, making them an excellent choice for transforming your living space. Whether you prioritize aesthetic appeal, light control, privacy, or energy efficiency, pleated blinds can be tailored to meet your specific needs and preferences. Visit [Solemlux.se](https://www.solemlux.se/) to explore a wide selection of customizable pleated blinds that can elevate the look and feel of your home.
**FAQ’s**
**Are pleated blinds suitable for all window sizes and shapes?
**
Pleated blinds can be customized to fit most window sizes and shapes, including arches, circles, and skylights. Specialty shapes and custom sizing options are available to accommodate unique window configurations.
**How do I clean and maintain pleated blinds?
**
Regular dusting with a soft cloth or vacuuming with a brush attachment is recommended to keep pleated blinds clean. For deeper cleaning, follow the manufacturer's instructions based on the type of fabric used.
**Are pleated blinds energy efficient?
**
Yes, pleated blinds offer excellent insulation properties, helping to reduce heat loss during winter and heat gain in summer. This can contribute to energy savings by reducing the need for heating and cooling. | joshuakim0946 | |
1,908,775 | How to change HTML text using JavaScript DOM | Html <!DOCTYPE html> <html> <head> <title>Hello,... | 0 | 2024-07-02T11:02:51 | https://dev.to/md_shariarhaque_11695a3/how-to-change-html-text-using-javascript-1edh | addeventlistener, javascript | Html
```
<!DOCTYPE html>
<html>
<head>
<title>Hello, World!</title>
<link rel="stylesheet" href="styles.css" />
</head>
<body>
<button type="submit" id="btn">click here to show time </button>
<p id="t"></p>
<script src="script.js"></script>
</body>
</html>
```
javaScript
```
document.addEventListener('DOMContentLoaded',function()
{
const btn = document.getElementById('btn');
btn.addEventListener('click', function(){
OnChange();
});
});
function OnChange(){
document.getElementById('t').innerHTML=Date();
}
```
style css
```
body{
padding: 25px;
}
.title {
color: #5C6AC4;
}
#btn{
background-color:orange;
border: none;
border-radius: 12px;
color: white;
padding: 15px 32px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
}
#btn:hover{
background-color: #04AA6D; /* Green */
border: none;
color: white;
padding: 15px 32px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
}
p{
font-size: 24px;
color: blue;
}
```
| md_shariarhaque_11695a3 |
1,908,774 | RESTful API design principles | RESTful API design principles are a set of guidelines that ensure your API is well-structured, easy... | 0 | 2024-07-02T11:02:32 | https://dev.to/muhammad_salem/restful-api-design-principles-259l | RESTful API design principles are a set of guidelines that ensure your API is well-structured, easy to use, and scalable. These principles are crucial for creating scalable, maintainable, and user-friendly APIs.
1. Resources as Nouns
- Use nouns to represent resources, not verbs
- Example: /users, /products, /orders
2. HTTP Methods as Verbs
- Use HTTP methods to represent actions:
- GET: Retrieve a resource
- POST: Create a new resource
- PUT: Update an entire resource
- PATCH: Partially update a resource
- DELETE: Remove a resource
3. Hierarchical Structure
- Organize resources in a logical hierarchy
- Example: /users/{userId}/orders/{orderId}
4. Versioning
- Include API version in the URL or header
- Example: /v1/users or Accept-version: v1
5. Filtering, Sorting, and Pagination
- Use query parameters for filtering: /users?status=active
- Implement sorting: /users?sort=lastName,asc
- Enable pagination: /users?page=2&limit=20
6. HTTP Status Codes
- Use appropriate status codes:
- 200 OK: Successful request
- 201 Created: Resource created successfully
- 204 No Content: Successful request with no response body
- 400 Bad Request: Invalid input
- 401 Unauthorized: Authentication required
- 403 Forbidden: Authenticated but not authorized
- 404 Not Found: Resource doesn't exist
- 500 Internal Server Error: Server-side error
7. HATEOAS (Hypermedia as the Engine of Application State)
- Include links to related resources in responses
- Enables clients to navigate the API dynamically
8. Consistent Naming Conventions
- Use lowercase for URLs
- Use hyphens for multi-word resource names: /order-items
- Use camelCase for JSON properties
9. Response Formats
- Support multiple formats (JSON, XML)
- Use Content-Type header to specify format
10. Error Handling
- Provide clear, informative error messages
- Include error code, message, and details
- Example:
```json
{
"error": {
"code": "VALIDATION_ERROR",
"message": "Invalid input data",
"details": [
{
"field": "email",
"message": "Invalid email format"
}
]
}
}
```
11. Idempotency
- Ensure that repeated identical requests have the same effect as a single request
- Particularly important for PUT and DELETE methods
12. Rate Limiting
- Implement rate limiting to prevent abuse
- Use headers to inform clients about limits:
- X-RateLimit-Limit: Maximum requests per time window
- X-RateLimit-Remaining: Remaining requests in current window
- X-RateLimit-Reset: Time when the limit resets
13. Security
- Use HTTPS for all API endpoints
- Implement proper authentication (e.g., OAuth 2.0, JWT)
- Validate and sanitize all input data
14. Caching
- Implement caching to improve performance
- Use ETags and Last-Modified headers
- Specify caching policies using Cache-Control header
15. Documentation
- Provide comprehensive API documentation
- Include example requests and responses
- Use tools like Swagger/OpenAPI for interactive documentation
16. Partial Responses
- Allow clients to request only specific fields
- Example: /users?fields=id,name,email
17. Bulk Operations
- Support bulk create, update, and delete operations
- Use consistent endpoints: /users/bulk
18. Statelessness
- Design the API to be stateless
- Each request should contain all information needed to process it
19. Asynchronous Operations
- For long-running tasks, return a 202 Accepted status
- Provide a way to check the status of the operation
20. Consistency
- Maintain consistency in your API design across all endpoints
- This includes naming, error handling, and response formats
By following these RESTful API design principles, you'll create APIs that are intuitive, scalable, and easy to use. Remember that while these principles provide a solid foundation, you may need to adapt them to your specific use case and requirements. Always consider the needs of your API consumers and the long-term maintainability of your API when making design decisions.
| muhammad_salem | |
1,880,581 | Ibuprofeno.py💊| #130: Explica este código Python | Explica este código Python Dificultad: Fácil x = {"a", "b", "c"} print("c"... | 25,824 | 2024-07-02T11:00:00 | https://dev.to/duxtech/ibuprofenopy-130-explica-este-codigo-python-4gc8 | python, beginners, spanish, learning | ## **<center>Explica este código Python</center>**
#### <center>**Dificultad:** <mark>Fácil</mark></center>
```py
x = {"a", "b", "c"}
print("c" in x)
```
* **A.** `True`
* **B.** `False`
* **C.** `NameError`
* **D.** `SyntaxError`
---
{% details **Respuesta:** %}
👉 **A.** `True`
Podemos usar el operador `in` para verificar si un valor pertenece o no a un conjunto.
En nuestro ejemplo `c` si esta en el conjunto `x`, entonces regresamos `True`.
{% enddetails %} | duxtech |
1,908,772 | SMALL WEBSITE | Below is a simple website made by me using Js, Css. It is a simple example of a responsive... | 0 | 2024-07-02T10:58:53 | https://dev.to/attaankvb/small-website-29i2 | beginners, website, webdev, support | Below is a simple website made by me using Js, Css.
It is a simple example of a responsive website
[WEBISTE](attaankvb.github.io)
| attaankvb |
1,908,310 | Setting up Krs for an EKS cluster on Microsoft Azure | Enhance your Kubernetes cluster management on Azure with KRS, a powerful tool designed to provide... | 0 | 2024-07-02T10:58:45 | https://dev.to/ajeetraina/setting-up-krs-for-an-eks-cluster-on-microsoft-azure-2793 | kubernetes, docker, developers | Enhance your Kubernetes cluster management on Azure with KRS, a powerful tool designed to provide recommendations and health checks using AI. KRS scans your cluster to identify deployed pods, services, and deployments, analyzes the tools used, and provides rankings based on their popularity. With features like generating recommendations, performing health checks, and exporting pod information, KRS supports both OpenAI and Hugging Face models to ensure your Kubernetes environment runs efficiently. This guide will walk you through setting up KRS for an EKS cluster on Azure, from installation to advanced usage.
## Prerequisites:
- An Azure account
- Install Azure CLI on your laptop
## Installation of KRS:
### 1. Clone the repository using the command
```
git clone https://github.com/kubetoolsca/krs.git
```
### Install the Krs Tool:
Change directory to /krs and run the following command to install krs locally on your system:
```
pip install .
```
Check if the tool has been successfully installed using:
```
krs --help
```
Once you get a list of commands you can move onto the next part.
### Create an EKS cluster on your azure account:
In order to create an EKS account, you can log into your account and search for Azure Kubernetes Service.
Once you click create, you can name your cluster, add a node pool (I used the default agentpool but you can create your own), and leave everything else to its default state. This will help you create a cluster.
### Install Azure CLI:
To install the CLI, I used the command-
```
brew update
brew install azure-cli
```
### Log into you azure account
Once the CLI is installed, log into your azure account using the command:
```
az login
```
### Connect to Your Cluster:
Retrieve the connection command from your cluster details on the Azure portal and execute it to connect to your cluster.
## Using Krs
Initialise Krs:
```
% krs init
```
## Scan the Clusters:
```
% krs scan
Scanning your cluster...
Cluster scanned successfully...
Extracted tools used in cluster...
The cluster is using the following tools:
+-------------+--------+-----------------------------+---------------+
| Tool Name | Rank | Category | CNCF Status |
+=============+========+=============================+===============+
| autoscaler | 5 | Cluster with Core CLI tools | unlisted |
+-------------+--------+-----------------------------+---------------+
```
## Get Recommended Tools:
```
% krs recommend
Our recommended tools for this deployment are:
+-----------------------------+------------------+-------------+---------------+
| Category | Recommendation | Tool Name | CNCF Status |
+=============================+==================+=============+===============+
| Cluster with Core CLI tools | Recommended tool | k9s | unlisted |
+-----------------------------+------------------+-------------+---------------+
```
## Installing Helm
```
brew install helm
```
## Installing Kubeview
```
helm install kubeview kubeview
NAME: kubeview
LAST DEPLOYED: Sat Jun 29 21:44:17 2024
NAMESPACE: default
STATUS: deployed
REVISION: 1
NOTES:
=====================================
==== KubeView has been deployed! ====
=====================================
To get the external IP of your application, run the following:
export SERVICE_IP=$(kubectl get svc --namespace default kubeview -o jsonpath='{.status.loadBalancer.ingress[0].ip}')
echo http://$SERVICE_IP
NOTE: It may take a few minutes for the LoadBalancer IP to be available.
You can watch the status of by running 'kubectl get --namespace default svc -w kubeview'
```
## Scanning the cluster
```
krs scan
Scanning your cluster...
Cluster scanned successfully...
Extracted tools used in cluster...
The cluster is using the following tools:
+-------------+--------+-----------------------------+---------------+
| Tool Name | Rank | Category | CNCF Status |
+=============+========+=============================+===============+
| kubeview | 30 | Cluster with Core CLI tools | unlisted |
+-------------+--------+-----------------------------+---------------+
| | 3 | Cluster Management | unlisted |
+-------------+--------+-----------------------------+---------------+
| autoscaler | 5 | Cluster with Core CLI tools | unlisted |
+-------------+--------+-----------------------------+---------------+
```
## Exports pod info with logs and events.
```
% krs export
Pod info with logs and events exported. Json file saved to current directory!
meetsimarkaur@meetsimars-MBP krs % ls
CODE_OF_CONDUCT.md arch.png gke.md kubeview
CONTRIBUTIONS.md bhive.png krs samples
LICENSE build krs.egg-info setup.py
README.md exported_pod_info.json kubetail
```
## Detecting and Fixing Issues with my cluster
```
% krs health
Starting interactive terminal...
Choose the model provider for healthcheck:
[1] OpenAI
[2] Huggingface
>> 1
Installing necessary libraries..........
openai is already installed.
Enter your OpenAI API key: sk-proj-xxxxxxx
Enter the OpenAI model name: gpt-3.5-turbo
API key and model are valid.
Namespaces in the cluster:
1. default
2. kube-node-lease
3. kube-public
4. kube-system
Which namespace do you want to check the health for? Select a namespace by entering its number: >> 1
Pods in the namespace default:
1. kubeview-64fd5d8b8c-khv8v
Which pod from default do you want to check the health for? Select a pod by entering its number: >> 1
Checking status of the pod...
Extracting logs and events from the pod...
Logs and events from the pod extracted successfully!
Interactive session started. Type 'end chat' to exit from the session!
>> Everything looks good!
Since the log entries provided are empty, there are no warnings or errors to analyze or address. If there were actual log entries to review, common steps to resolve potential issues in a Kubernetes environment could include:
1. Checking the configuration files for any errors or inconsistencies.
2. Verifying that all necessary resources (e.g. pods, services, deployments) are running as expected.
3. Monitoring the cluster for any performance issues or resource constraints.
4. Troubleshooting any networking problems that may be impacting connectivity.
5. Updating Kubernetes components or applying patches as needed to ensure system stability and security.
6. Checking logs of specific pods or services for more detailed error messages to pinpoint the root cause of any issues.
>> 2
>> Since the log entries are still empty, the response remains the same: Everything looks good! If you encounter any specific issues or errors in the future, feel free to provide the logs for further analysis and troubleshooting.
>> end chat
```
Using KRS, you can effortlessly identify and optimize the tools within your Kubernetes clusters, whether on-premises or in the public cloud. The krs command feature, in particular, stands out by suggesting tools that are better suited for your cluster's specific needs. Discovering this functionality was a revelation, showcasing the tool's ingenuity in enhancing cluster management. It's a testament to the advanced capabilities of KRS, making it an indispensable asset for SRE and DevOps engineers and teams.
| ajeetraina |
1,908,771 | Python FastAPI: Implementing Non-Blocking Logging with Built-In QueueHandler and QueueListener Classes | Continuing with our Python FastAPI learning series, this post explores the implementation of... | 0 | 2024-07-02T10:57:17 | https://dev.to/behainguyen/python-fastapi-implementing-non-blocking-logging-with-built-in-queuehandler-and-queuelistener-classes-2ahi | python, logging, non, blocking | <em>
Continuing with our <a href="https://github.com/behai-nguyen/fastapi_learning" title="Index of the Python FastAPI Complete Series" target="_blank">Python FastAPI learning series</a>, this post explores the implementation of non-blocking logging using Python’s built-in <a href="https://docs.python.org/3/library/logging.config.html#configuring-queuehandler-and-queuelistener" title="Configuring QueueHandler and QueueListener" target="_blank">QueueHandler and QueueListener classes</a>.
</em>
<h3>
🐍 <a href="https://github.com/behai-nguyen/fastapi_learning" title="Index of the Complete Series" target="_blank">Index of the Complete Series</a>.
</h3>
Starting from this post, the code will require Python 3.12.4. Please refer to the <a href="https://github.com/behai-nguyen/fastapi_learning#the-code-after-tag-v040-requires-python-3124" title="The Code After Tag v0.4.0 Requires Python 3.12.4" target="_blank">following discussion</a> on how to upgrade to Python 3.12.4.
🚀 <strong>Please note,</strong> complete code for this post can be downloaded from GitHub with:
```
git clone -b v0.5.0 https://github.com/behai-nguyen/fastapi_learning.git
```
<h2>Table Of Contents</h2>
<ul style="list-style: none;">
<li style="margin-top:10px;">
<a href="#non-blocking-logging">❶ Definition and Complete Working Example of <code>Non-Blocking Logging</code></a>
</li>
<li style="margin-top:10px;">
<a href="#logging-functionality">❷ Structure of Logging</a>
</li>
<li style="margin-top:10px;">
<a href="#project-layout">❸ Project Layout</a>
</li>
<li style="margin-top:10px;">
<a href="#the-implementation">❹ Implementation of <code>Non-Blocking Logging</code></a>
<ul style="list-style: none;">
<li style="margin-top:10px;">
<a href="#impl-logger-config">⓵ YAML Logger Configuration File</a>
</li>
<li style="margin-top:10px;">
<a href="#impl-python-code">⓶ New Python Module: <code>common/queue_logging.py</code></a>
</li>
<li style="margin-top:10px;">
<a href="#impl-python-main-mod">⓷ Updates to the <code>main.py</code> Module</a>
</li>
<li style="margin-top:10px;">
<a href="#impl-python-use-logging">⓸ Incorporating Logging into Existing Modules</a>
</li>
</ul>
</li>
<li style="margin-top:10px;">
<a href="#documentation">❺ Essential Official Documentation</a>
</li>
<li style="margin-top:10px;">
<a href="#concluding-remarks">❻ Concluding Remarks</a>
</li>
</ul>
<a id="non-blocking-logging"></a>
❶ In essence, <code>non-blocking logging</code> means that the actual logging task does not hold up the thread performing the logging. This thread does not have to wait for the logging to complete and can move to the next instruction immediately.
<code>Non-blocking logging</code> is achieved via three principal built-in classes: <a href="https://docs.python.org/3/library/queue.html#queue.Queue" title="queue.Queue" target="_blank">queue.Queue</a>, <a href="https://docs.python.org/3/library/logging.handlers.html#queuehandler" title="QueueHandler" target="_blank">QueueHandler</a>, and <a href="https://docs.python.org/3/library/logging.handlers.html#queuelistener" title="QueueListener" target="_blank">QueueListener</a>. An instance of <code>queue.Queue</code> is accessible by both a <code>non-blocking</code> <code>QueueHandler</code> instance and a <code>QueueListener</code> instance. The <code>QueueListener</code> instance passes the logging messages to its own <code>blocking</code> handler(s), such as a <a href="https://docs.python.org/3/library/logging.handlers.html#rotatingfilehandler" title="RotatingFileHandler" target="_blank">RotatingFileHandler</a>.
According to the official documentation for <a href="https://docs.python.org/3/library/logging.handlers.html#queuehandler" title="QueueHandler" target="_blank">QueueHandler</a> and <a href="https://docs.python.org/3/library/logging.handlers.html#queuelistener" title="QueueListener" target="_blank">QueueListener</a>, they have their own separate thread for logging. This frees the main thread from waiting for the logging to finish, <strong>thereby preventing it from being blocked</strong>.
<a id="non-blocking-logging-example"></a>
The complete working example below, adapted from a <a href="https://stackoverflow.com/a/70716053" title="Python - asynchronous logging" target="_blank">Stack Overflow answer</a> and a <a href="https://medium.com/@dresraceran/implementing-async-logging-in-fastapi-middleware-b112aa9c0db8" title="Implementing Async Logging in FastAPI Middleware" target="_blank">Medium post</a>, illustrates how the aforementioned classes fit together to implement <code>non-blocking logging</code>. Logging messages are written to the <code>queue.log</code> file in the same directory as the Python script file:
```python
from contextlib import asynccontextmanager
from fastapi import FastAPI, Request
import logging
import queue
from logging.handlers import QueueHandler, QueueListener, RotatingFileHandler
logger = logging.getLogger()
logger.setLevel(logging.DEBUG)
log_queue = queue.Queue()
# Non-blocking handler.
queue_handler = QueueHandler(log_queue)
queue_handler.setFormatter(logging.Formatter("%(asctime)s - %(levelname)s - %(message)s"))
# Attached to the root logger.
logger.addHandler(queue_handler)
# The blocking handler.
rot_handler = RotatingFileHandler('queue.log')
# Sitting comfortably in its own thread, isolated from async code.
queue_listener = QueueListener(log_queue, rot_handler)
# Start listening.
queue_listener.start()
@asynccontextmanager
async def lifespan(app: FastAPI):
yield
logger = logging.getLogger()
logger.info("Application is shutting down.")
# Should stop listening.
queue_listener.stop()
app = FastAPI(lifespan=lifespan)
@app.get("/")
async def root(request: Request):
logger.debug(f"I am {request.url}")
return {"message": "Hello World"}
```
I am not entirely sure if the above logging approach can also be classified as <code>asynchronous logging</code>, because only one thread can control the Python interpreter at a time, as discussed in <a href="https://realpython.com/python-gil/" title="What Is the Python Global Interpreter Lock (GIL)?" target="_blank">this article</a>.
The final implementation for this post is slightly more complex than the example above, but the underlying technical principles remain the same.
<a id="logging-functionality"></a>
❷ Let’s discuss how the logging messages for each request should be structured.
<ul>
<li style="margin-top:10px;">
When a request is being served, the application automatically logs the following message: <code>* Request Started [< Session Id not available >][UUID session Id]</code>
</li>
<li style="margin-top:10px;">
The request's endpoint handler can optionally log its own messages.
</li>
<li style="margin-top:10px;">
After a request has been served, the application automatically logs the following message: <code>* Request Finished [< Session Id not available >][UUID session Id]</code>
</li>
</ul>
We will refer to the two messages <code>* Request Started ...</code> and <code>* Request Finished ...</code> as a <strong><em>marker pair</em></strong> throughout the rest of this post.
As you may recall from the <a href="https://behainguyen.wordpress.com/2024/05/21/python-fastapi-implementing-persistent-stateful-http-sessions-with-redis-session-middleware-and-extending-oauth2passwordbearer-for-oauth2-security/" title="Python FastAPI: Implementing Persistent Stateful HTTP Sessions with Redis Session Middleware and Extending OAuth2PasswordBearer for OAuth2 Security" target="_blank">third post</a>, we implemented the <code>UUID session Id</code>. An <a href="https://behainguyen.wordpress.com/2024/01/28/rust-simple-actix-web-email-password-login-and-request-authentication-using-middleware/#definition-authenticated-session" title="authenticated session" target="_blank"><code>authenticated session</code></a> is uniquely identified by a <code>UUID session Id</code>. Thus, a <code>UUID session Id</code> will be logged with the marker pair if one is available, otherwise the text <code>< Session Id not available ></code> will be logged. Please see the following illustrative examples.
<a id="logging-func-without-uuid"></a>
⓵ Logging where a <code>UUID session Id</code> is not yet available, i.e., the request is from an <code><strong>un</strong> <a href="https://behainguyen.wordpress.com/2024/01/28/rust-simple-actix-web-email-password-login-and-request-authentication-using-middleware/#definition-authenticated-session" title="authenticated session" target="_blank">authenticated session</a></code>:
```
INFO: ... * Request Started < Session Id not available >
INFO: ... Path: http://192.168.0.16:5000/auth/login?state=0
DEBUG: ... Attempt to deliver the login page.
DEBUG: ... Delivering the login page.
INFO: ... * Request Finished < Session Id not available >
INFO: ... 192.168.0.2:61019 - "GET /auth/login?state=0 HTTP/1.1" 200
```
<a id="logging-func-with-uuid"></a>
⓶ Logging with a <code>UUID session Id</code>, i.e., the request is from an <a href="https://behainguyen.wordpress.com/2024/01/28/rust-simple-actix-web-email-password-login-and-request-authentication-using-middleware/#definition-authenticated-session" title="authenticated session" target="_blank"><code>authenticated session</code></a>:
```
INFO: ... * Request Started f9b96bcdab8b5153c44ca02e0a489c7d
INFO: ... Path: http://192.168.0.16:5000/admin/me
DEBUG: ... Returning a valid logged-in user.
INFO: ... * Request Finished f9b96bcdab8b5153c44ca02e0a489c7d
INFO: ... 192.168.0.2:61016 - "GET /admin/me HTTP/1.1" 200
```
💥 <strong>Please note the last line</strong> in each of the above two examples. It originates from the <code>httptools_impl.py</code> module, specifically the method <code>send</code> on line <code>466</code>. It is outside of the marker pair, and I did not attempt to have it logged within the marker pair. I believe that, together with the <code>thread Id</code> (not shown) and the path, we can visually trace the originating request.
<a id="project-layout"></a>
❸ The changes to the code are quite minimal. Essentially, we’re adding a new <a href="https://yaml.org/" title="YAML" target="_blank">YAML</a> logging configuration file, a new Python module, and incorporating logging into other modules. The updated structure of the project is outlined below.
<strong>-- Please note,</strong> those marked with <span style="font-size:1.5em;">★</span> are updated, and those marked with <span style="font-size:1.5em;">☆</span> are new.
```
/home/behai/fastapi_learning/
.
├── logger_config.yaml ☆
├── main.py ★
├── pyproject.toml ★
├── pytest.ini
├── README.md ★
├── src
│ └── fastapi_learning
│ ├── common
│ │ ├── consts.py
│ │ └── queue_logging.py ☆
│ ├── controllers
│ │ ├── admin.py ★
│ │ ├── auth.py ★
│ │ └── __init__.py
│ ├── __init__.py
│ ├── models
│ │ └── employees.py
│ ├── static
│ │ └── styles.css
│ └── templates
│ ├── admin
│ │ └── me.html
│ ├── auth
│ │ ├── home.html
│ │ └── login.html
│ └── base.html
└── tests
├── conftest.py
├── __init__.py
├── integration
│ ├── test_admin_itgt.py
│ ├── test_api_itgt.py
│ └── test_auth_itgt.py
└── README.md
```
<a id="the-implementation"></a>
❹ In this section, we discuss the implementation of <code>non-blocking logging</code>.
I have used <a href="https://docs.python.org/3/library/logging.handlers.html#rotatingfilehandler" title="RotatingFileHandler" target="_blank">RotatingFileHandler</a> for logging via an external <a href="https://yaml.org/" title="YAML" target="_blank">YAML</a> configuration file before. I appreciate this approach because we can adjust the logging by tweaking the configuration file without having to refactor the code. I would like to adopt the same approach for this implementation. We will first examine the YAML configuration file and then the associated Python code.
<a id="impl-logger-config"></a>
⓵ The full content of the YAML configuration file, <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/logger_config.yaml" title="The YAML logger configuration file" target="_blank"><code>logger_config.yaml</code></a>, is listed below:
```yaml
version: 1
disable_existing_loggers: False
formatters:
default:
(): uvicorn.logging.DefaultFormatter
format: '{levelprefix} [{asctime}] {thread} {filename} {funcName} {lineno} {message}'
style: '{'
datefmt: '%d-%m-%Y %H:%M:%S'
colours_removed:
(): uvicorn.logging.DefaultFormatter
format: '{levelname} [{asctime}] {thread} {filename} {funcName} {lineno} {message}'
style: '{'
handlers:
console:
formatter: default
class: logging.StreamHandler
stream: ext://sys.stdout
rotating_file:
formatter: colours_removed
class: logging.handlers.RotatingFileHandler
filename: ./logs/fastapi_learning.log
maxBytes: 4096
backupCount: 5 # Keep 5 old log files
encoding: utf-8
queue_rotating_file:
class: logging.handlers.QueueHandler
# queue: fastapi_learning.common.queue_logging.queue_factory
# listener: fastapi_learning.common.queue_logging.CustomListener
handlers:
- rotating_file
loggers:
# uvicorn.error is also valid. It is the equivalence of root.
# uvicorn.error:
# level: INFO
# handlers:
# - console
# - qhand
# propagate: no
fastapi_learning.debug:
level: DEBUG
handlers:
- console
- queue_rotating_file
propagate: no
root:
level: INFO
handlers:
- console
- queue_rotating_file
```
All aspects of the above configuration file are documented in the <a href="https://docs.python.org/3/library/logging.html" title="logging — Logging facility for Python" target="_blank">official Python logging documentation</a>. We will discuss some implementation details below.
<ol>
<li style="margin-top:10px;">
For completeness, we log to both the console (<code>stdout</code>) and log files. The <code>default</code> formatter is for the console, where we retain the default colours. The <code>colours_removed</code> formatter is for the log file. Without removing the text colours, log files will have control codes written in place of text colours. For example, <code>^[[32mINFO^[[0m:</code>, where <code>^[</code> denotes the <code>ESC</code> control character, whose ASCII code is <code>27</code>. Please refer to <a href="https://behainguyen.wordpress.com/wp-content/uploads/2024/07/114-01.png" title="Control colour codes print out illustrations" target="_blank">this screenshot</a> for the exact printout. Please further note the following:
<ul>
<li style="margin-top:10px;">
Log attributes such as <code>levelname</code>, <code>thread</code> etc., are covered by the official documentation on <a href="https://docs.python.org/3/library/logging.html#logrecord-attributes" title="LogRecord attributes" target="_blank">LogRecord attributes</a>.
</li>
<li style="margin-top:10px;">
I <strong>cannot find official documentation</strong> for <code>levelprefix</code>. However, it is mentioned and used in discussions about Python logging across the internet. I have observed that <code>levelprefix</code> and <code>levelname</code> both print out the text logging level such as <code>DEBUG</code>, <code>INFO</code> etc.; <code>levelprefix</code> prints out with colours while <code>levelname</code> does not.
</li>
<li style="margin-top:10px;">
For the rather unusual entry <code>(): uvicorn.logging.DefaultFormatter</code>, please refer to the official documentation on <a href="https://docs.python.org/3/library/logging.config.html#logging-config-dict-userdef" title="User-defined objects" target="_blank">User-defined objects</a>.
</li>
</ul>
</li>
<a id="impl-logger-config-rotating-file"></a>
<li style="margin-top:10px;">
For the <code>rotating_file</code> handler, please note:
<ul>
<li style="margin-top:10px;">
💥 For the <code>filename: ./logs/fastapi_learning.log</code> property, we configured the log files to be written to the <code>./logs</code> sub-directory. This is not something supported out of the box. We will discuss this property in a <a href="#impl-python-logs-sub-dir">later section</a>.
</li>
<li style="margin-top:10px;">
The values of <code>maxBytes</code> and <code>backupCount</code> are deliberately set low for debugging purposes.
</li>
</ul>
</li>
<li style="margin-top:10px;">
For the <code>queue_rotating_file</code> handler, please note:
<ul>
<a id="impl-logger-config-queue-listener"></a>
<li style="margin-top:10px;">
<p>
The YAML configuration is a copy of the snippet from the Python documentation on <a href="https://docs.python.org/3/library/logging.config.html#configuring-queuehandler-and-queuelistener" title="Configuring QueueHandler and QueueListener" target="_blank">Configuring QueueHandler and QueueListener</a>. We left both the <code>queue</code> key and the <code>listener</code> out. We use the standard implementations as documented.
</p>
<p>
💥 It is the application’s responsibility to start and stop any <a href="https://docs.python.org/3/library/logging.handlers.html#logging.handlers.QueueListener" title="QueueListener" target="_blank">QueueListener</a> instances in use. We will discuss this in a <a href="#impl-python-listeners">later section</a>.
</p>
</li>
<li>
<p>
The <a href="https://docs.python.org/3/library/logging.handlers.html#logging.handlers.QueueHandler" title="QueueHandler" target="_blank">QueueHandler</a> is a special case: it has its own handlers, in this case, it is the <code>rotating_file</code>.
</p>
<p>
It is worth noting that the structure of the <code>queue_rotating_file</code> is very similar to the <a href="#non-blocking-logging-example">non-blocking logging example</a> presented in an earlier section.
</p>
</li>
</ul>
</li>
<a id="impl-logger-config-logger"></a>
<li style="margin-top:10px;">
We configure only one logger: <code>fastapi_learning.debug</code>. Its log messages are consumed by both the console and the <code>queue_rotating_file</code> handlers.
</li>
</ol>
<a id="impl-python-code"></a>
⓶ We will now discuss the new Python module, <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/src/fastapi_learning/common/queue_logging.py" title="Logging management common/queue_logging.py" target="_blank"><code>common/queue_logging.py</code></a>, which works in conjunction with the <a href="#impl-logger-config">above YAML configuration file</a>. This is a straightforward module, comprising less than 90 lines.
<ol>
<a id="impl-python-logs-sub-dir"></a>
<li style="margin-top:10px;">
<p>
In the <a href="#impl-logger-config-rotating-file"><code>rotating_file</code> handler</a> section, we mentioned that the <code>./logs</code> sub-directory is not supported out of the box. As it is configured, it is a sub-directory immediately under the directory where the <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/main.py" title="fastapi_learning application entry script" target="_blank"><code>main.py</code></a> module resides.
</p>
<p>
We need to manage this sub-directory ourselves: we must ensure that this sub-directory exists before the <a href="#impl-logger-config">YAML configuration file</a> is loaded, otherwise Python will raise an exception.
</p>
<p>
💥 Therefore, passing the YAML configuration file in the command line, such as <code>uvicorn main:app --log-config=logger_config.yaml</code>, is not possible, or more accurately, <strong>I don’t know how to enable that</strong>. I tried and failed to run my code before the configuration file was loaded.
</p>
<p>
The next best option is to load the configuration file ourselves: we have full control. Please refer to the function <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/src/fastapi_learning/common/queue_logging.py#L57-L65" title="prepare_logging_and_start_listeners" target="_blank"><code>prepare_logging_and_start_listeners</code>, lines 57-65</a>, in the new <code>common/queue_logging.py</code> module. The actual code consists of only 4 lines:
</p>
<ul>
<li style="margin-top:10px;">
Always create the <code>./logs</code> sub-directory.
</li>
<li style="margin-top:10px;">
We then load the configuration file and pass it to <a href="https://docs.python.org/3/library/logging.config.html#logging.config.dictConfig" title="logging.config.dictConfig" target="_blank">logging.config.dictConfig</a>.
</li>
</ul>
<p>
💥 <strong>Please note that</strong>, due to the above implementation, the loggers have not been configured yet when the application starts up. The startup messages below are not written to the current log file. The default existing loggers are still in use at this point.
</p>
<pre>
INFO: Started server process [29204]
INFO: Waiting for application startup.
INFO: Application startup complete.
INFO: Uvicorn running on http://0.0.0.0:5000 (Press CTRL+C to quit)
</pre>
</li>
<a id="impl-python-listeners"></a>
<li style="margin-top:10px;">
<p>
In a <a href="#impl-logger-config-queue-listener">previous section</a>, we mentioned that it is the application’s responsibility to start and stop any <a href="https://docs.python.org/3/library/logging.handlers.html#logging.handlers.QueueListener" title="QueueListener" target="_blank">QueueListener</a> instances. The last part of the function <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/src/fastapi_learning/common/queue_logging.py#L67-L69" title="prepare_logging_and_start_listeners" target="_blank"><code>prepare_logging_and_start_listeners</code></a>, lines <code>67</code> to <code>69</code>, implements the code to get the listeners to start listening.
</p>
<p>
We retrieve all listener instances and start each one. The private helper function <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/src/fastapi_learning/common/queue_logging.py#L39-L47" title="__retrieve_queue_listeners" target="_blank"><code>__retrieve_queue_listeners</code></a> should be self-explanatory.
</p>
<p>
We currently have only one listener instance, but in the future, we might configure more, such as for sending out emails. In such a case, we would need to update only the private function <code>__retrieve_queue_listeners</code>.
</p>
<p>
Before the application shuts down, it should call <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/src/fastapi_learning/common/queue_logging.py#L79-L87" title="logging_stop_listeners" target="_blank"><code>logging_stop_listeners</code></a> to get the listeners to stop listening.
</p>
</li>
<a id="impl-python-request-markers"></a>
<li style="margin-top:10px;">And finally, the <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/src/fastapi_learning/common/queue_logging.py#L12-L37" title="RequestLoggingMiddleware class" target="_blank"><code>RequestLoggingMiddleware</code></a> class implements the request logging marker pair that was mentioned in an <a href="#logging-functionality">in an earlier section</a>.
</li>
</ol>
<a id="impl-python-main-mod"></a>
⓷ The changes in <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/main.py" title="fastapi_learning application entry script" target="_blank"><code>main.py</code></a> are straightforward and should be self-explanatory.
For information on the new <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/main.py#L36-L45" title="fastapi_learning application entry script" target="_blank"><code>lifespan</code></a> function, please refer to the official FastAPI documentation on <a href="https://fastapi.tiangolo.com/ru/advanced/events/#lifespan" title="Lifespan" target="_blank">Lifespan</a>.
<a id="impl-python-use-logging"></a>
⓸ Having implemented all of the above, we are finally able to incorporate logging into the methods in the two modules, <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/src/fastapi_learning/controllers/auth.py" title="controllers/auth.py" target="_blank"><code>controllers/auth.py</code></a> and <a href="https://github.com/behai-nguyen/fastapi_learning/blob/68890892801be114aab17cf656d8ebbd6eca06b0/src/fastapi_learning/controllers/admin.py" title="controllers/admin.py" target="_blank"><code>controllers/admin.py</code></a>.
<a id="documentation"></a>
❺ Some of the referenced official documentation has already been mentioned throughout the discussion. However, I believe it is rather essential, so I would like to reiterate it in this separate section. I have personally read through all the Python documentation on logging. They include:
<ol>
<li style="margin-top:10px;">
<a href="https://docs.python.org/3/library/logging.html" title="logging — Logging facility for Python" target="_blank">logging — Logging facility for Python</a>.
</li>
<li style="margin-top:10px;">
<a href="https://docs.python.org/3/howto/logging.html#logging-basic-tutorial" title="Basic Logging Tutorial" target="_blank">Basic Logging Tutorial</a>.
</li>
<li style="margin-top:10px;">
<a href="https://docs.python.org/3/howto/logging.html#logging-advanced-tutorial" title="Advanced Logging Tutorial" target="_blank">Advanced Logging Tutorial</a>.
</li>
<li style="margin-top:10px;">
<a href="https://docs.python.org/3/howto/logging-cookbook.html#logging-cookbook" title="Logging Cookbook" target="_blank">Logging Cookbook</a>.
</li>
</ol>
The last one is particularly interesting. Python logging is indeed a powerful library.
<a id="concluding-remarks"></a>
❻ When I first started this logging process, I thought it was going to be simple. However, it took a bit longer than I anticipated. I encountered some problems, but I managed to find solutions. The code presented in this post has gone through several refactorings. This is the first time I have explored Python logging in detail. I learned a lot during the writing of this post. There is room for improvement, but overall, I think the implementation is acceptable.
Thank you for reading. I hope you find the information in this post useful. Stay safe, as always.
✿✿✿
Feature image source:
<ul>
<li>
<a href="https://www.omgubuntu.co.uk/2022/09/ubuntu-2210-kinetic-kudu-default-wallpaper" target="_blank">https://www.omgubuntu.co.uk/2022/09/ubuntu-2210-kinetic-kudu-default-wallpaper</a>
</li>
<li>
<a href="https://in.pinterest.com/pin/337277459600111737/" target="_blank">https://in.pinterest.com/pin/337277459600111737/</a>
</li>
<li>
<a href="https://www.python.org/downloads/release/python-3124/" target="_blank">https://www.python.org/downloads/release/python-3124/</a>
</li>
<li>
<a href="https://fastapi.tiangolo.com/" target="_blank">https://fastapi.tiangolo.com/</a>
</li>
<li>
<a href="https://1000logos.net/download-image/" target="_blank">https://1000logos.net/download-image/</a>
</li>
</ul>
<h3>
🐍 <a href="https://github.com/behai-nguyen/fastapi_learning" title="Index of the Complete Series" target="_blank">Index of the Complete Series</a>.
</h3>
| behainguyen |
1,908,769 | MongoDB vs. Relational Databases: A Comprehensive Guide | Introduction to MongoDB and Relational Databases MongoDB and relational databases... | 0 | 2024-07-02T10:54:01 | https://blog.spithacode.com/posts/af40997d-19f3-4655-a3fb-440adf371f12 | webdev, javascript, mongodb, beginners | ## Introduction to MongoDB and Relational Databases
MongoDB and relational databases represent two different paradigms in database management systems. MongoDB is a NoSQL database that stores data in flexible, JSON-like documents, whereas relational databases use structured tables with predefined schemas.
Relational databases, such as MySQL, PostgreSQL, and Oracle, have been the backbone of enterprise data management for decades. They rely on a structured schema to enforce data integrity and support complex queries through SQL.
In contrast, MongoDB, developed by MongoDB Inc., emerged in the mid-2000s as part of the NoSQL movement. It offers a more flexible approach, allowing for the storage of semi-structured and unstructured data. This flexibility makes MongoDB particularly suited for applications that require rapid development and iteration.
## Why Choose MongoDB Over Relational Databases?
### Flexibility of Document Structure
One of MongoDB's key advantages is the flexibility of its document structure. Unlike relational databases, where rows in a table must adhere to a strict schema, MongoDB collections do not require documents to have the same structure. This means that each document in a collection can have different fields, enabling developers to store diverse and evolving data easily.
For example, if a patient has multiple phone numbers, a relational database might require either multiple columns for each phone number or a separate table for phone numbers. In MongoDB, all phone numbers can be stored in a single document, simplifying data retrieval and reducing the need for joins.
### Efficiency in Data Retrieval
In a relational database, retrieving complete information about an entity often requires joining multiple tables, which can be computationally expensive and slow. MongoDB's document model stores related data together in a single document, making data retrieval faster and more efficient. This model eliminates the need for complex joins and allows applications to fetch complete records with a single query.
### Schema Evolution
With relational databases, adding new columns to a table necessitates schema migration, which can be time-consuming and error-prone. MongoDB's schema-less design allows for the addition of new fields to documents without any need for migration, offering greater agility and speed in development.
## Data Structure Comparison
### MongoDB Collections vs. SQL Tables
A MongoDB collection is analogous to a table in a relational database. However, unlike tables, collections do not enforce a fixed schema, allowing for greater flexibility in storing various types of documents.
### MongoDB Documents vs. SQL Rows
In MongoDB, a document is equivalent to a row in a relational database table. Each document is a self-contained unit of data that includes the field names and values, making it self-descriptive. This self-containment reduces the need for external metadata and simplifies data management.
### MongoDB Fields vs. SQL Columns
Fields in MongoDB are akin to columns in SQL. The significant difference is that documents within the same collection can have different fields, supporting polymorphic data structures. This flexibility contrasts with the rigid, column-based structure of relational databases.
## Efficient Data Handling
### Single Document Query Efficiency
MongoDB's ability to store all relevant data in a single document enhances query efficiency. This model ensures that all required information is available in one place, reducing the need for multiple queries and joins.
### Minimizing Joins
In relational databases, complex queries often involve multiple joins between tables. These joins can degrade performance and increase latency. MongoDB's document model minimizes the need for joins by embedding related data within a single document. This approach streamlines queries and improves performance.
### Reducing Code Complexity
By consolidating related data into single documents, MongoDB reduces the complexity of application code. Developers can work with fewer data structures and simplify data access patterns, leading to more maintainable and readable code.
## Fault Tolerance and High Availability
### Replica Sets in MongoDB
MongoDB ensures fault tolerance and high availability through replica sets. A replica set is a group of MongoDB servers that maintain the same data set. One server acts as the primary server, handling all write operations, while secondary servers replicate the primary server's data.
### Automatic Failover
If the primary server in a replica set fails, an automatic election process selects a new primary server from the secondaries. This failover mechanism ensures that the database remains available even in the event of server failures.
### Data Consistency and Recovery
Replica sets also enhance data consistency and recovery. Data is continuously replicated across multiple servers, providing redundancy and ensuring that the most recent data is available even if some servers go offline.
## Scalability
### Horizontal Scaling in MongoDB
MongoDB excels at horizontal scaling, allowing for the addition of more servers to handle increased load. This scalability is achieved through sharding, which distributes data across multiple servers based on a shard key.
### Sharding
Sharding involves partitioning data into smaller, more manageable pieces and distributing them across a cluster of servers. This distribution enhances performance and enables MongoDB to handle large volumes of data and high-traffic loads efficiently.
### Global Distribution of Clusters
MongoDB supports the global distribution of clusters, allowing data to be stored closer to users around the world. This capability improves latency and performance for geographically dispersed applications.
## Types of NoSQL Databases
### Key-Value Stores
Key-value stores are the simplest type of NoSQL database, storing data as key-value pairs. They are highly performant for read and write operations but lack the rich querying capabilities of other NoSQL databases.
### Graph Databases
Graph databases store data as nodes and edges, representing relationships between entities. They are ideal for applications that require complex relationship traversal, such as social networks and recommendation engines.
### Column-Oriented Databases
Column-oriented databases store data in columns rather than rows, optimizing read performance for specific queries. They are well-suited for analytical workloads and large-scale data processing.
### Document-Oriented Databases
Document-oriented databases, such as MongoDB, store data in JSON-like documents. They offer a flexible schema and support for nested data structures, making them versatile for various applications.
## Detailed Comparison: RDBMS vs. MongoDB
### Database Structure
Both RDBMS and MongoDB organize data into collections or tables, but their underlying structures differ significantly. Relational databases enforce a strict schema, while MongoDB allows for flexible document structures.
### Collection vs. Table
In MongoDB, a collection is a group of documents, whereas in relational databases, a table is a group of rows. Collections are schema-less, providing more flexibility than tables.
### Document vs. Row
Documents in MongoDB are analogous to rows in SQL tables, but they can have varying fields. This polymorphism allows for more dynamic and adaptable data models.
### Field vs. Column
Fields in MongoDB documents are similar to columns in SQL tables. However, the key difference is that MongoDB documents do not require a consistent set of fields across all documents in a collection.
### Indexes
Indexes in both MongoDB and relational databases enhance query performance. However, MongoDB indexes are primarily used for filtering and sorting rather than joining data, resulting in lower memory usage.
### Relationships and Joins
MongoDB can express relationships through embedded documents or references, reducing the need for joins. When joins are necessary, MongoDB provides the $lookup operator to link collections.
## Data Integrity and Transactions
### ACID Principles in MongoDB
MongoDB adheres to ACID principles (Atomicity, Consistency, Isolation, Durability) for transactions, ensuring data integrity and reliability.
* Atomicity: Transactions are all-or-nothing operations.
* Consistency: Only valid data is saved.
* Isolation: Transactions do not interfere with each other.
* Durability: Data is preserved even after system crashes.
### Transactions in MongoDB
MongoDB supports multi-document transactions, enabling atomic operations across multiple documents and collections. This capability ensures data integrity in complex operations.
### Ensuring Data Consistency
MongoDB maintains data consistency through replica sets and configurable write concerns. These mechanisms ensure that data is accurately replicated and consistent across all nodes.
## CAP Theorem and MongoDB
### Explanation of CAP Theorem
The CAP theorem states that a distributed database system can provide only two out of three guarantees: Consistency, Availability, and Partition Tolerance.
### MongoDB’s Approach to CAP Theorem
MongoDB offers configurations to balance the trade-offs between consistency, availability, and partition tolerance.
* Write Concern: Configures how many nodes must acknowledge a write before it is considered successful.
* Read Concern: Determines the consistency level for read operations.
* Read Preference: Specifies from which node to read data (e.g., primary, nearest).
### Write Concern and Read Concern
Write concern levels in MongoDB range from acknowledging writes on the primary node to ensuring writes are replicated across the majority of nodes. Read concern levels dictate whether reads should return the most recent data or data that has been replicated to a majority of nodes.
### Read Preference
MongoDB’s read preference settings allow applications to balance performance and consistency by specifying from which nodes to read data. Options include reading from the primary node, the nearest node, or a specific node.
## Data Modeling in MongoDB
### Phases of Data Modeling
MongoDB data modeling involves three key phases:
1. Describe the Workload: Understand data size, operation types, and durability requirements.
2. Model the Relationships: Identify relationships and decide whether to embed or reference data.
3. Apply Design Patterns: Implement design patterns to optimize data access and storage.
### Embedding vs. Referencing
* Embedding: Embedding subdocuments or arrays within a document is preferred for related data that is frequently accessed together.
* Referencing: References are used when the related data is large or frequently accessed independently.
### Schema Design Patterns
Common schema design patterns in MongoDB include:
* Bucket Pattern: Used for time-series data or logging.
* Computed Pattern: Stores precomputed data for faster access.
### Sharding and Horizontal Scaling
Sharding divides a database into smaller, more manageable parts distributed across multiple servers. This technique enables horizontal scaling, allowing MongoDB to handle large volumes of data and high query loads efficiently.
## MongoDB Query Languages
### MongoDB Query Language (MQL)
MongoDB Query Language (MQL) provides a simple syntax for querying documents within a single collection. It supports various operations such as find, insert, update, and delete.
### Aggregation Framework
The Aggregation Framework in MongoDB allows for complex data processing and analysis. It supports stages such as $match, $group, $sort, and $lookup, equivalent to SQL operations like WHERE, GROUP BY, and JOIN.
### SQL Statements vs. MongoDB Aggregation Stages
* SELECT: db.collection.aggregate()
* WHERE: $match
* GROUP BY: $group
* COUNT: $count
* LIMIT: $limit
* ORDER BY: $sort
* JOIN: $lookup
* UNION ALL: $unionWith
## Real-World Use Cases
### Case Studies
Several organizations have successfully implemented MongoDB to handle large-scale, complex data. Case studies highlight MongoDB's effectiveness in various industries, including finance, healthcare, and e-commerce.
### Applications in Various Industries
MongoDB's flexibility and scalability make it suitable for applications in diverse industries. It is used in content management systems, real-time analytics, mobile applications, and more.
## Challenges and Considerations
### Limitations of MongoDB
While MongoDB offers many advantages, it also has limitations, such as handling complex transactions across multiple collections and potential performance issues with very large datasets.
### Common Pitfalls
Common pitfalls in using MongoDB include improper data modeling, inadequate indexing, and overlooking replica set configurations. These issues can lead to performance degradation and data inconsistencies.
### Best Practices
Adopting best practices, such as thorough data modeling, proper indexing, and regular performance monitoring, can help mitigate potential challenges and ensure optimal performance.
## FAQs
What are the main differences between MongoDB and SQL databases? MongoDB uses a flexible, document-oriented model, whereas SQL databases use structured tables with fixed schemas. MongoDB excels in handling semi-structured data and rapid development, while SQL databases are ideal for complex queries and transactions.
How does MongoDB handle data consistency? MongoDB maintains data consistency through replica sets, write concerns, and read concerns. These mechanisms ensure that data is accurately replicated and consistent across all nodes.
Can MongoDB support ACID transactions? Yes, MongoDB supports ACID transactions for multi-document operations. This ensures that all-or-nothing operations maintain data integrity and consistency.
What is sharding in MongoDB? Sharding is the process of distributing data across multiple servers to enhance performance and scalability. It allows MongoDB to handle large volumes of data and high query loads efficiently.
How does MongoDB ensure high availability? MongoDB ensures high availability through replica sets, which provide redundancy and automatic failover. If the primary server fails, a secondary server is automatically promoted to primary, ensuring continuous availability.
What are the use cases for MongoDB vs. relational databases? MongoDB is ideal for applications requiring flexible data models, rapid development, and horizontal scalability. Relational databases are suited for applications requiring complex queries, transactions, and strict data integrity.
## Conclusion
In summary, MongoDB offers significant advantages over traditional relational databases, including flexibility, efficiency, and scalability. Its document-oriented model simplifies data handling, reduces code complexity, and supports rapid development. While MongoDB presents some challenges, adopting best practices can mitigate these issues. As the database landscape evolves, MongoDB continues to provide robust solutions for modern data management needs. | stormsidali2001 |
1,908,768 | Text | Ich war anfangs skeptisch gegenüber masterarbeit ghostwriter, aber meine Erfahrung hat meine Meinung... | 0 | 2024-07-02T10:53:31 | https://dev.to/faweqss/text-1ehj | Ich war anfangs skeptisch gegenüber [masterarbeit ghostwriter](https://meinghostwriter.de/masterarbeit/), aber meine Erfahrung hat meine Meinung komplett geändert. Die Qualität der Forschung und die Aufmerksamkeit für jedes einzelne Detail waren außergewöhnlich. Die Kommunikation war klar und effizient und das Endergebnis übertraf meine Erwartungen. Meine Perspektive hat sich wirklich verändert und ich kann den Service nur empfehlen, wenn man hochqualitative wissenschaftliche Arbeiten benötigt. | faweqss | |
1,908,736 | How to Digitally Sign an NDA Online Using OpenSign for Free | When you’re looking for outside assistance to grow your business, it’s important to protect your... | 0 | 2024-07-02T10:53:24 | https://dev.to/opensign001/how-to-digitally-sign-an-nda-online-using-opensign-for-free-48oc | When you’re looking for outside assistance to grow your business, it’s important to protect your confidential information.
Sending a [non-disclosure agreement](https://app.opensignlabs.com/) (NDA) during your onboarding process can help ensure that your trade secrets, intellectual property and business practices are protected. OpenSign offers a seamless way to digitally sign NDAs online for free, ensuring your documents are secure and legally binding. Here's a step-by-step guide on how to use OpenSign for this purpose.
Step 1:
## Create an [OpenSign](https://app.opensignlabs.com/) free account
In the first step, visit the OpenSign website and create a free account. In order to sign up, you must provide your basic information, such as your name, email address, phone number and password. Once you have filled out all these details, click the Register button.
Step 2:
## Upload the NDA document
After signing up, you will be directed to the OpenSign dashboard. From the left-side menu, click on [Request signature](https://app.opensignlabs.com/form/8mZzFxbG1z). Once the Request signature page opens, upload your NDA document, add a document title, add signers, set the document expiration duration, choose send in order and click next button.
Step 3:
## Add Signature widgets
Once your document is uploaded, you will need to add a signature widget to the NDA. OpenSign provides an intuitive interface for this task. Click on the signature widget and position it where the signature is required. If you need to add more signers, use the option on the right side to add recipients. You can add multiple signature widgets for each signer.
Step 4:
## Send email to signatories
After adding the signers and signature widgets, click the Send button. A pop-up will appear, allowing you to send an email directly to the signer or personalize the email if you'd like. After clicking the send button, OpenSign will send an email invitation to each signatory with a link to the document.
Step 5:
## Sign the NDA
Once the signatories receive the invitation, they can click on the Sign here button to access the document. OpenSign requires email verification before the signer open the document. The platform provides a user-friendly interface for signing, allowing signatories to create their digital signature by typing their name, drawing it using a mouse or touchscreen or uploading an image of their handwritten signature. After signing, they simply click Finish to complete the process.
Step 6:
## Download and store the signed NDA
After all parties have signed the NDA, you will receive a notification. You can download the fully signed document from your email or directly from your OpenSign account. It’s advisable to store the signed NDA in a secure location for future reference. OpenSign also retains a copy in your account, allowing you to access it anytime.
## Benefits of using OpenSign
**Ease of use:** Sign documents from anywhere, at any time, without the need for physical meetings or printing.
**Protection:** OpenSign uses advanced encryption to ensure the confidentiality and integrity of your documents.
**Lawfulness:** Digital signatures created with OpenSign are legally binding and compliant with international e-signature laws.
**Cost-effective:** OpenSign offers a free tier, making it an affordable solution for individuals and small businesses.
**Conclusion**
Digitally signing an NDA online using OpenSign is a straightforward and efficient process. With just a few clicks, you can ensure your confidential agreements are signed securely and legally. Say goodbye to the hassle of traditional paper-based signatures and embrace the convenience of digital solutions. Sign up for OpenSign today and experience the future of document signing.
You can effortlessly protect your crucial information and optimize your process by following these steps. Happy signing! | opensign001 | |
1,908,765 | How I created a unique PPT for "Load Testing" KT! | We all love to create great, eye catching PPTs don't we? So, there was a scenario during last year... | 0 | 2024-07-02T10:53:04 | https://dev.to/chandruchiku/how-i-created-a-unique-ppt-for-load-testing-3lcb | loadtesting, ppt, presentation, creative | We all love to create great, eye catching PPTs don't we? So, there was a scenario during last year where we needed to share knowledge within the team on what we know and could add value to the team.
I am being good at drawing thought, "Let me put my artist skills (whatever level it is) to good use". I was to present a PPT on "Load Testing" to let the team and juniors understand why it is needed. With the topic and content now ready, I had to select/create a PPT template to present. I thought let me create a theme where it will be unique and keep audience attentive.
I decided to create a theme of colony of ants for load testing. Each slide being able to explain with illustrations of ants representing the content of the slide.
**Tools** : Microsoft Powerpoint, XP Pen Deco Mini7 for drawing.
Here is how it turned out.
With these slides, I was able to keep audience engaged and attentive rather than using plain old readily available templates on PowerPoint.
Hope this inspires somebody to create such more unique creative illustrations.
| chandruchiku |
1,906,957 | Angular Addicts #27: NgRx 18, New RFC: DomRef API, Web storage with Signals & more | My favorite Angular resources of June, 2024 | 0 | 2024-07-02T10:52:55 | https://www.angularaddicts.com/p/angular-addicts-27-ngrx-18-new-rfc-domref | angular, typescript, ngrx, javascript | ---
title: Angular Addicts #27: NgRx 18, New RFC: DomRef API, Web storage with Signals & more
published: true
description: My favorite Angular resources of June, 2024
tags: #angular #typescript #ngrx #javascript
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8brs0cdobclzgbsp27pq.png
canonical_url: https://www.angularaddicts.com/p/angular-addicts-27-ngrx-18-new-rfc-domref
# Use a ratio of 100:42 for best results.
# published_at: 2024-06-30 21:50 +0000
---
## 👋Hey fellow Angular Addict
This is the 27th issue of the Angular Addicts Newsletter, a monthly collection of carefully selected Angular resources that got my attention. (Here are the [26th](https://www.angularaddicts.com/p/angular-addicts-26-angular-18-signal-inputs), [25th](https://www.angularaddicts.com/p/angular-addicts-25-angular-and-wiz), and [24th](https://www.angularaddicts.com/p/angular-addicts-24-signals-tan-stack))
## 📢Release announcements
### 📢[NgRx 18](https://dev.to/ngrx/announcing-ngrx-18-ngrx-signals-is-almost-stable-eslint-v9-support-new-logo-and-redesign-workshops-and-more-17n2)
The latest version of NgRX was released last month. [Tim Deschryver](https://x.com/tim_deschryver)'s article covers the main points about the new NgRx version:
- Stable NgRx Signals (it's almost there)
- ESLint Plugin support for ESLint v9
- New NgRx Operators Package
- New Logo and Redesign of [ngrx.io](https://ngrx.io/)
## 💬 New RFCs
### 💬[DOM Interaction in Angular](https://github.com/angular/angular/discussions/56498)
This RFC proposes to deprecate the `ElementRef` API and replace it with a new API called `DomRef`.
## 💎Angular Gems of June, 2024
### 📰[Angular Forms new unified control state change events](https://medium.com/@davidepassafaro/angular-forms-new-unified-control-state-change-events-9e8e361c4777)
[Angular 18](https://www.angularaddicts.com/p/whats-new-in-angular-18) introduced a new feature in its Reactive Forms library called unified control state change events. The `AbstractControl` class (the base class for `FormControl`, `FormGroup`, and `FormArray`) now has a new `events: Observable<ControlEvent<TValue>>` property. This property is an observable, that emits for value, status, pristine or touched changes. [Davide Passafaro](https://x.com/DavidePassafaro)' s article starts with the basics of Reactive Forms, binding them with the template, understanding validation and the disabled state. Then, he explains how to use the new `events` observable to track the form's state.
### 📰[Synchronized Web Storage with Signals](https://dev.to/this-is-angular/synchronized-web-storage-with-signals-5b05)
In this article, [Pierre Bouillon](https://dev.to/pbouillon) shows how to make the Web Storage in the browser reactive using Angular's Signals and the [Storage Event](https://developer.mozilla.org/en-US/docs/Web/API/Window/storage_event) of the [Web Storage API](https://developer.mozilla.org/en-US/docs/Web/API/Web_Storage_API).
### 📰[Angular Object Inputs](https://nartc.me/blog/angular-object-inputs/)
In his blog post, [Chau Tran](https://x.com/Nartc1410) explains how to provide a single input with default values for a component, when the component has many inputs with default values.
### 📰[The hidden attribute removes the need to define `display: none`](https://cssisntmagic.substack.com/p/the-hidden-attribute-removes-the-7e7)
[Stas Melnikov](https://x.com/melnik909) is the author of the [CSS isn't magic](https://cssisntmagic.substack.com/p/the-hidden-attribute-removes-the-7e7) newsletter. In this issue, he shares a tip to simplify the CSS for elements that can be shown or hidden.
### 📰[Built text summarization application to summarize a web page with Angular](https://www.blueskyconnie.com/built-text-summarization-application-to-summarize-web-page-with-angular/)
[Connie Leung](https://x.com/connieleung404) builds a text summarization app in Angular. The app allows users to enter text and a topic hint, and it summarizes the text into a list of bullet points. The app has a [NestJS backend](https://www.blueskyconnie.com/summarize-a-web-page-using-langchainjs-and-gemini-in-nestjs/), that communicates with Google's Gemini LLM. The full source code is available [here](https://github.com/railsstudent/fullstack-genai-text-summeration-app/tree/main)
## 👨💻About the author
My name is [Gergely Szerovay](https://www.linkedin.com/in/gergelyszerovay/), I worked as a data scientist and full-stack developer for many years, and I have been working as frontend tech lead, focusing on Angular based frontend development. As part of my role, I'm constantly following how Angular and the frontend development scene in general is evolving. To share my knowledge, I started the [Angular Addicts](https://angularaddicts.com/) monthly newsletter and publication in 2022, so that I can send you the best resources I come across each month. Whether you are a seasoned Angular Addict or a beginner, I got you covered. Let me know if you would like to be included as a writer. Let’s learn Angular together! [Subscribe here](https://www.angularaddicts.com/) 🔥
Angular has evolved very rapidly over the past few years, and in the past year, with the rise of generative AI, our software development workflows have also evolved rapidly. In order to closely follow the evolution of AI-assisted software development, I decided to start building AI tools in public, and publish my progress on [AIBoosted.dev](https://aiboosted.dev). Join my on this learning journey: [Subscribe here](https://aiboosted.dev) 🚀
Follow me on [Substack (Angular Addicts)](https://www.angularaddicts.com/), [Substack (AIBoosted.dev)](https://aiboosted.dev), [Medium](https://medium.com/@GergelySzerovay), [Dev.to](https://dev.to/gergelyszerovay), [Twitter](https://twitter.com/GergelySzerovay) or [LinkedIn](https://www.linkedin.com/in/gergelyszerovay/) to learn more about Angular, and how to build AI apps with AI, Typescript, React and Angular!
## 🕹️Previous issues
If you missed the previous issues of the newsletter, you can read them [here](https://www.angularaddicts.com/t/angular-addicts-monthly), these are the latest 3 issues:
- [Angular Addicts #26: Angular 18, best practices, recent conference recordings & more](https://www.angularaddicts.com/p/angular-addicts-26-angular-18-signal-inputs)
- [Angular Addicts #25: Angular and Wiz will be merged, the differences between React and Angular & more](https://www.angularaddicts.com/p/angular-addicts-25-angular-and-wiz)
- [Angular Addicts #24: Angular 17.3, Signals and unit testing best practices, Storybook 8 & more](https://www.angularaddicts.com/p/angular-addicts-24-signals-tan-stack)
## 📨 Submit your Angular resource
Have you found or written an interesting Angular-related article, tweet or other resource lately? Please let me know here in the comments or send me a DM on [Twitter](https://twitter.com/gergelyszerovay)! I might feature it in the next Angular Addicts issue! | gergelyszerovay |
1,908,767 | Make A Halloween Costume: With Little Shopping From Spirit Halloween Store | Creating a Halloween costume with items from the Spirit Halloween Store in Burbank may seem like a... | 0 | 2024-07-02T10:52:52 | https://dev.to/glendalehalloween/make-a-halloween-costume-with-little-shopping-from-spirit-halloween-store-28g3 | Creating a Halloween costume with items from the [Spirit Halloween Store in Burbank](https://glendale-halloween.blogspot.com/2024/07/make-halloween-costume-with-little.html) may seem like a lot of work, but with a structured approach, it becomes an exciting project. Envision your ideal costume, pick your dress materials, assemble your costume, and complete it with a final try-on. This step-by-step process guarantees a unique and exciting Halloween costume for the 2024 season.
| glendalehalloween | |
1,908,766 | Design Patterns in Laravel: Level Up Your Code with Reusable Solutions | If you're building applications with Laravel, chances are you might have come across people saying,... | 0 | 2024-07-02T10:52:25 | https://dev.to/kareem-khaled/design-patterns-in-laravel-level-up-your-code-with-reusable-solutions-3pfp | designpatterns, webdev, laravel, php | If you're building applications with Laravel, chances are you might have come across people saying, "Design patterns are the way to go." But **what, really, are design patterns**? And more importantly, **how can they make your Laravel applications better**?
Through this article, let us go through an exampleapatkan with design patterns, in showing just a re-usable solution in helping you go about writing cleaner, more maintainable, and scalable code. We're going to go through practical examples and real-world scenarios so that you can see how the power of patterns works.
## What Are Design Patterns, Anyway?
You could safely define design patterns as blueprints or templates for resolving common problems in programming. Being language-agnostic, they are more about battle-tested strategies experienced developers use and reuse to create reliable software.
Design patterns are embedded in Laravel as a framework, although you can also use them explicitly in your own code. This will bring about the following benefits:
**Improved Code Readability**: Patterns convey, in a single glance, the intent of the code, even for other developers who might not have known your project.
**Maintainability**: Changes in code and debugging aren't as painful when the code is structured.
**Scalability**: Patterns will help you design code that grows and adapts to the evolution of your application.
* **Faster Development:** Reusable patterns will save you time and effort, and you won't have to reinvent the wheel over for each problem.
**Essential Design Patterns for Laravel Developers**
## Let's go through a few of the key patterns most appropriate for Laravel applications:
1. **Repository Pattern**: This pattern acts as an intermediary between the logic level of your application and the data layer. This gives you a clean interface to the databases, or other data sources, making your code flexible and easier to test.
A good example would be if you were building a blog. In place of having your controllers working directly against Eloquent models, you would abstract that out into something like a `PostRepository` to abstract away database operations that dealt with posts, such as creation, fetch, save, delete, and so on.
2. **Factory Pattern:** Factories make the process of getting an object easy, especially when those objects require setup or dependencies that are complex.
One of the nice features of Laravel is that factories can be used to generate test data for your models. This can enable you to write very realistic tests without having to create the data by hand every time.
3. Decorator Pattern: Enables the addition of new behaviors to existing objects dynamically without changing their structure.
One could use this in order to realize caching for some service class. In this way, results of some expensive operations can be cached without touching the core logic of the service.
4. **Observer Pattern:** The Observer pattern is used to perform events generated by an object to a host of other objects.
One fine example of the Observer pattern is Laravel's event system. You would then be able to create event listeners that respond to some events with other actions. For example, an event that somebody has just become a new user of your website will send a notification or other similar event responses.
## Real-World Scenario: Building a Modular E-commerce Platform
Suppose you are asked to build an enormous e-commerce platform. The following is how you could use design patterns to meet this challenge:
1. **Repository Pattern**: Handle the data of the products, orders, customers through repositories. It will keep business logic independent of the implementation of a database.
2. **Factory Pattern**: Creation of factories to create a realistic set of test data for your models—products, orders, users—to check everything works as it should.
3. **Decorator Pattern**: Implement caching on your product catalog to achieve better performance.
4. **Observer Pattern**: Use events for actions like sending order confirmation e-mails or updating inventory levels by Result.
## Your Turn: Share Your Pattern Prowess
Which design patterns have you applied in your Laravel applications? Did you find any creative ways to use them? Please share your experiences and insights in the comments below! Let's learn from each other and build even better Laravel applications together.
## Need a Design Pattern Guru?
If you have any design problems that are bugging you, or if you just want a more in-depth discussion about patterns, please don't hesitate to drop me an email at [kareem_khaled@t-horizons.com](mailto:kareem_khaled@t-horizons.com/). Let's chat!
| kareem-khaled |
1,908,764 | Why HeadSpin Is The Best BrowserStack Alternative | During development, ensuring the quality and performance of mobile applications is paramount. As... | 0 | 2024-07-02T10:51:38 | https://dev.to/berthaw82414312/why-headspin-is-the-best-browserstack-alternative-2hfp | headspin, testingplatform, testingsolution, automatedtesting | During development, ensuring the quality and [performance of mobile applications](https://www.headspin.io/blog/a-performance-testing-guide) is paramount. As users expect seamless experiences, app developers must prioritize thorough testing to catch bugs, optimize performance, and ensure compatibility. Testing helps developers locate and address issues early in development, reducing the risk of poor user experiences and costly post-launch fixes.
## The Importance of Testing for App Developers
In the highly competitive mobile and web applications world, delivering a seamless and reliable user experience is paramount. As user expectations continue to rise, app developers must prioritize testing to ensure their applications are robust, secure, and performant. Effective testing practices play a crucial role in the development lifecycle, offering numerous benefits that can make or break an app’s success.
**Enhancing User Experience**
Applications must provide an outstanding user experience. Testing helps identify and fix bugs, crashes, and performance issues before the app reaches the end-users. By thoroughly testing the app, developers can ensure that users enjoy a smooth, glitch-free experience, essential for user satisfaction and retention.
**Ensuring Compatibility**
Today’s users access applications on various devices, operating systems, and browsers. Ensuring compatibility across this diverse landscape is a significant challenge for developers. Testing across different platforms and devices helps identify compatibility issues, ensuring that the app functions correctly for all users, regardless of the device or OS.
**Improving Performance**
Slow load times, laggy interfaces, and unresponsive features can drive users away. Performance testing helps developers identify and address performance bottlenecks, optimizing the app for speed and efficiency. This ensures the app delivers a fast, responsive experience, even under heavy load conditions.
**Reducing Costs**
Catching issues early in the development cycle is significantly more cost-effective than fixing them post-launch. Bugs discovered after the app has release can lead to expensive fixes, negative user reviews, and a damaged reputation. By investing in thorough testing during the development phase, developers can reduce the overall development cost and avoid costly post-release fixes.
**Boosting Security**
Security is a top priority for both developers and users. Applications that handle sensitive data must be secure to protect user information and maintain trust. Security testing helps identify vulnerabilities and potential threats, allowing developers to implement necessary safeguards.
**Supporting Continuous Integration and Deployment**
In modern development practices, continuous integration (CI) and continuous deployment (CD) are essential for maintaining a fast-paced development cycle. Automated testing in CI/CD pipelines enables developers to run tests automatically with every code change. This ensures that new features and updates do not introduce bugs or regressions, allowing for faster, more reliable releases.
**Enhancing Code Quality**
Testing helps to find bugs and contributes to better code quality. Writing tests encourages developers to think critically about their code and design it in a modular, maintainable way. This leads to cleaner, more efficient code that is easier to understand, modify, and extend in the future.
**Facilitating Collaboration**
In larger development teams, multiple developers work on different application parts simultaneously. Testing helps ensure that changes made by one developer do not inadvertently affect the work of others. By running tests regularly, teams can identify integration issues early, facilitating better collaboration and smoother development processes.
**Building User Trust**
Ultimately, a well-tested application builds trust with users. When users know an app is reliable, secure, and performs well, they are more likely to use it regularly and recommend it to others. Building this trust is essential for gaining and retaining a loyal user base, which is critical for the long-term success of any application.
## HeadSpin vs BrowserStack: A Comprehensive Comparison
When selecting a testing platform, developers often compare two industry leaders: [HeadSpin and BrowserStack](https://www.headspin.io/why-choose-headspin/headspin-vs-browserstack). Both platforms offer robust solutions for testing mobile and web applications but cater to different aspects of the testing landscape. Below, we delve into the detailed comparison of HeadSpin vs BrowserStack, highlighting their unique features, advantages, and use cases.
**HeadSpin**
**Overview:** HeadSpin is renowned for its focus on performance monitoring, user experience analytics, and real device testing. It provides a holistic view of an application’s performance and user interactions, making it a preferred choice for developers who prioritize in-depth insights and optimization.
**Key Features:**
- **Real Device Cloud:** HeadSpin provides access to many real devices across different regions worldwide. This ensures accurate testing results that reflect real-world conditions.
- **Performance Monitoring:** One of HeadSpin’s standout features is its comprehensive performance monitoring. It tracks various performance metrics, including network conditions, response times, and user interactions, helping developers identify and resolve performance bottlenecks.
- **User Experience Analytics:** HeadSpin offers detailed analytics on user experience, capturing metrics like screen load times, touch responsiveness, and visual load times. This helps understand user interactions with the app and identify areas for improvement.
- **Automation Support:** The platform integrates seamlessly with popular automation frameworks like Appium, Selenium, and others, enabling automated testing of mobile and web applications.
- **AI-Powered Insights:** HeadSpin leverages artificial intelligence to provide actionable insights. It can automatically detect issues, suggest optimizations, and predict potential problems, enhancing the overall efficiency of the testing process.
**Advantages:**
- **Comprehensive Monitoring:** HeadSpin’s extensive performance monitoring and user experience analytics provide deep insights into application behavior.
- **Real-World Testing:** Headspin provides test on real devices across different geographies ensuring the app performs well under various network conditions and user scenarios.
- **AI-Driven Analysis:** Using AI to identify issues and suggest optimizations helps streamline the testing process and improve app quality.
- Use Cases:
- **Performance Optimization:** Ideal for developers looking to optimize the performance and responsiveness of their applications.
- **User Experience Enhancement:** Useful for teams that enhance user experience through detailed analytics and insights.
- **Global Testing:** Suitable for applications that require testing across different regions and network conditions.
**BrowserStack**
**Overview:** BrowserStack is a cloud-based testing platform widely used for its extensive device and browser coverage. It supports automated and manual testing, making it a versatile tool for developers looking to ensure cross-browser and cross-device compatibility.
**Key Features:**
**Real Device Cloud:** BrowserStack provides instant access to thousands of real devices, allowing developers to test their applications in real-world conditions.
**Cross-Browser Testing:** The platform supports testing across various browsers and operating systems, ensuring that web applications perform consistently across different environments.
**Automated Testing:** BrowserStack supports popular automation frameworks like Selenium, Appium, Cypress, and more, enabling efficient automated testing.
**Local Testing:** With BrowserStack Local, developers can test their local servers and internal networks, ensuring that applications work seamlessly in their development environment before deployment.
**Seamless Integrations:** BrowserStack integrates with various CI/CD tools like Jenkins, Travis CI, and CircleCI, facilitating continuous testing and integration.
**Advantages:**
- **Extensive Coverage:** BrowserStack’s wide range of devices and browsers ensures comprehensive testing coverage.
- **Ease of Use:** The platform’s user-friendly interface and easy setup make it accessible for developers of all skill levels.
- **Robust Automation Support:** Strong support for automated testing and CI/CD integrations streamlines the testing process and accelerates release cycles.
**Use Cases:**
- **Cross-Browser Compatibility:** Ideal for ensuring that web applications perform consistently across different browsers and operating systems.
- **Automated Testing:** Suitable for teams looking to automate their testing process and integrate it with their CI/CD pipeline.
- **Local Testing:** Useful for developers who need to test applications in their local development environment before deployment.
## BrowserStack Competitors And Alternatives
While BrowserStack is a leading testing platform, developers may consider HeadSpin a robust BrowserStack alternative due to its advanced performance monitoring and user experience analytics. HeadSpin’s unique features make it a strong contender for those seeking more in-depth insights and optimization capabilities.
## Conclusion
Choosing the right testing platform is crucial for delivering high-quality applications. HeadSpin and BrowserStack offer powerful testing solutions, each with strengths and weaknesses. HeadSpin excels in performance monitoring and user experience analytics, making it a great choice for developers focused on optimization and detailed insights. By understanding the capabilities and limitations, you can make an informed decision that aligns with your development and testing goals. Reach out!
Original Source: https://netizensreport.com/comparing-headspin-and-browserstack/ | berthaw82414312 |
1,908,281 | Implementing Redux into your React App | State management for React applications can often be confusing. On a smaller scale, it is more... | 0 | 2024-07-02T01:16:33 | https://dev.to/zemorath/implementing-redux-into-your-react-app-2hmf | State management for React applications can often be confusing. On a smaller scale, it is more manageable with things like React’s Context API but for medium and large scale applications, a more robust and organized system is necessary. This is where Redux comes in.
Redux is a predictable state container for Javascript apps. It helps you manage application state in a single immutable state tree. Actions are dispatched to update the state, and components can subscribe to changes in the state. Let’s overview some important Redux terms.
Store: Redux manages the state in a single store. React components can subscribe to the store to receive updates when the state changes.
Actions: Actions are plain JavaScript objects that represent an intention to change the state. They are typically dispatched using `store.dispatch(action)`.
Reducers: Reducers specify how the application’s state changes in response to actions. They are pure functions that take the current state and an action and return a new state.
Selectors: Selectors are functions that extract specific pieces of state from the redux store state.
React-Redux provides bindings to connect Redux with React components. It simplifies the process of passing down state and dispatching actions to components that need them. This accomplishes a few other things as well. First, it helps reduce the clutter in your components and makes them more readable for others. Second, it creates more reusable code through the use of actions. These actions can be called upon in any component that needs them. Take the code below as an example.
This is a simple employee login action which takes credentials entered in by the employee and makes a post fetch request to the backend. It will then dispatch the setEmployee reducer, updating the state, pictured below.
In this picture, a state is created called “employee” as an object with several key/value pairs. Employee, presumably where information about the employee is stored, error to help with any error handling, and isLoggedIn to help with some conditional rendering. The beauty of Redux is that you can include so many different things here in this initialState object, really whatever your code needs to keep track of! From here we move down to the reducers which are state update options that are called upon by your actions. In the action pictured above, it dispatches the setEmployee reducer which does a couple of things. First, it assigns to the employee whatever the “action.payload” is. In this instance, employee is passed into setEmployee which was assigned the “response.json()” from the fetch request and eventually becomes the payload. Second, error remains as null (if error needs to be handled, an action can call the setError). Lastly, it changes isLoggedIn to true which can be used to help conditionally render different aspects of your app. All of this is stored in a file called “EmployeeSlice.js” which is imported into “Index.js”, also sometimes conventionally named “Store.js”. Here, the Redux store is configured and the reducer is assigned to a key like so.
Easy enough. Lastly, wherever your ReactDOM is rendering, you would import the Redux store and wrap it around your app pictured below.
Wrapping it around your app and passing in “store” allows any of your components in your app to access the store and thus, all of what you’ve created in your slice! After creating your components and now needing to actually call any of your actions, one would need to import “useDispatch” from react-redux and whatever slice you need from the appropriate file. The logic in this app for the employee login in the component looks like this.
All but one of the terms were covered above. Selectors are pretty simple to grasp but I will still include an example below. Here, I have imported `useSelector` from react-redux and then used it to assign a value to both user and employee.
Prior to having Redux in my app, all of my fetch requests and state changes were managed in the components themselves or passed down from parent components. This was great but sometimes made tracking them convoluted and easily led to errors. In an app as small as this, Redux can actually end up adding more code to your project than there would be with useContext. But, the benefit of Redux shows once the app starts scaling and allows for seamless global state management by maintaining a clear separation of concerns. Having this single source of truth for the application state makes it easier to debug and understand how the data is changing over time. There are also additional tools like Redux DevTools which allow you to inspect every action, state change, replay actions, and track performance. Top companies such as Instagram, Amazon, and Robinhood reportedly use Redux in their tech stacks encouraging a large community and app ecosystem which produces many plugins, middleware, and extensions, allowing for a more customizable fit of Redux.
| zemorath | |
1,908,763 | Building Easy Databases in FastAPI with PonyORM | FastAPI is a modern tool used for constructing APIs with Python 3.7 and above, utilizing standard... | 0 | 2024-07-02T10:48:25 | https://developer-service.blog/building-easy-databases-in-fastapi-with-ponyorm/ | python, fastapi, ponyorm, database | [FastAPI](https://fastapi.tiangolo.com/) is a modern tool used for constructing APIs with Python 3.7 and above, utilizing standard Python type hints.
It's recognized for its quickness, user-friendliness, and the ability to automatically generate interactive API documentation.
When combined with a proficient Object-Relational Mapping (ORM) library such as [PonyORM](https://ponyorm.org/), it transforms into a robust instrument for developing scalable and manageable web applications.
In this article, we will look into the process of setting up and utilizing PonyORM in conjunction with FastAPI to effortlessly create and use databases.
---
## Why Choose PonyORM?
PonyORM is an Object-Relational Mapping (ORM) tool specifically designed for Python, employing a distinct method to link Python objects with database tables.
Here are some of its standout features:
- Declarative Mapping: PonyORM utilizes Python generators to formulate queries, making them straightforward to understand and compose.
- User-Friendliness: With features like automatic schema creation and a user-friendly API, PonyORM streamlines the process of managing databases.
- Compatibility with Numerous Databases: PonyORM is versatile, offering support for SQLite, MySQL, PostgreSQL, and Oracle databases.
---
## Setting Up FastAPI with PonyORM
### Step 1: Install the Required Packages
First, you need to install FastAPI, PonyORM, and an ASGI server, such as Uvicorn. You can do this using pip:
```
pip install fastapi uvicorn pony
```
### Step 2: Create a FastAPI Application
Start by creating a simple FastAPI application. In a new file main.py, set up the basic structure of your application:
`from fastapi import FastAPI
app = FastAPI()
@app.get("/")
async def read_root():
return {"Hello": "World"}
`
### Step 3: Configure PonyORM
Next, configure PonyORM to connect to your database. For this example, we'll use SQLite for simplicity.
```
from pony.orm import Database, Required, db_session
db = Database()
class User(db.Entity):
username = Required(str)
email = Required(str)
db.bind(provider='sqlite', filename='database.sqlite', create_db=True)
db.generate_mapping(create_tables=True)
```
### Step 4: Integrate PonyORM with FastAPI
To ensure that PonyORM's sessions are correctly managed, we will use FastAPI's dependency injection system. This will help manage the database session within the context of each request:
```
def get_db_session():
with db_session:
yield
@app.post("/users/")
async def create_user(username: str, email: str, db: db_session = Depends(get_db_session)):
user = User(username=username, email=email)
return user.to_dict()
@app.get("/users/")
async def get_users(db: db_session = Depends(get_db_session)):
users = User.select()
return [user.to_dict() for user in users]
```
### Step 5: Run the Application
Now, you can run your FastAPI application using Uvicorn:
```
uvicorn main:app --reload
```
Navigate to http://127.0.0.1:8000/docs to see the automatically generated interactive API documentation provided by FastAPI.
You can then create a user like this:
Which should give you this response:
You can confirm that the user was created successfully with:
---
## Conclusion
Merging FastAPI with PonyORM enables you to swiftly construct robust and maintainable web applications.
FastAPI's up-to-date features, like automatic validation and interactive documentation, coupled with PonyORM's intuitive and potent database mapping, foster a productive development environment.
This configuration is perfect for developers aiming to create efficient APIs while minimizing repetitive code. | devasservice |
1,908,762 | Bridge the Distance with Love: How to Send Rakhi to New York for your Siblings | By sending Rakhi online, you can surprise your sibling with a thoughtful gesture that transcends... | 0 | 2024-07-02T10:48:04 | https://dev.to/rashmi_fe4560af27820229cb/bridge-the-distance-with-love-how-to-send-rakhi-to-new-york-for-your-siblings-172l | rakhi, gifts | By sending Rakhi online, you can surprise your sibling with a thoughtful gesture that transcends physical distance. Even if you are unable to be together in person, the symbolic tying of the Rakhi thread signifies your love and protection for each other. [Send Rakhi to New York ](https://egiftsportal.com/rakhi-to-new-york)
The seamless delivery services ensure that your Rakhi reaches its destination in New York on time, allowing you to celebrate this auspicious occasion without any delays or worries. Embrace technology to strengthen your bond and make this Raksha Bandhan truly memorable for both you and your sibling.
| rashmi_fe4560af27820229cb |
1,908,700 | State Management and Middleware in React | Introduction In modern web development, especially with React, managing state effectively... | 0 | 2024-07-02T10:46:31 | https://dev.to/wafa_bergaoui/state-management-and-middleware-in-react-1mkh | javascript, react, redux | ## **Introduction**
In modern web development, especially with React, managing state effectively is crucial for building dynamic, responsive applications. State represents data that can change over time, such as user input, fetched data, or any other dynamic content. Without proper state management, applications can become difficult to maintain and debug, leading to inconsistent UI and unpredictable behavior. This is where state management tools come in, helping developers maintain and manipulate state efficiently across their applications.
## **Local State**
Local state is managed within individual components using React's useState hook. This method is straightforward and ideal for simple, component-specific state needs.
**Example:**
```javascript
import React, { useState } from 'react';
function Counter() {
const [count, setCount] = useState(0);
return (
<div>
<p>Count: {count}</p>
<button onClick={() => setCount(count + 1)}>Increment</button>
</div>
);
}
```
**Use Case:** Local state is perfect for small, self-contained components where the state does not need to be shared or accessed by other components.
## **Context API**
The Context API allows state to be shared across multiple components without the need for prop drilling, making it a good solution for more complex state sharing needs.
**Example:**
```javascript
import React, { createContext, useContext, useState } from 'react';
const ThemeContext = createContext();
function ThemeProvider({ children }) {
const [theme, setTheme] = useState('light');
return (
<ThemeContext.Provider value={{ theme, setTheme }}>
{children}
</ThemeContext.Provider>
);
}
function ThemedComponent() {
const { theme, setTheme } = useContext(ThemeContext);
return (
<div>
<p>Current theme: {theme}</p>
<button onClick={() => setTheme(theme === 'light' ? 'dark' : 'light')}>Toggle Theme</button>
</div>
);
}
```
**Use Case:** The Context API is useful for global states like themes or user authentication that need to be accessed by multiple components across the component tree.
## **Redux**
Redux is a state management library that provides a centralized store for managing global state with predictable state transitions using reducers and actions.
**Example:**
```javascript
// store.js
import { createStore } from 'redux';
const initialState = { count: 0 };
function counterReducer(state = initialState, action) {
switch (action.type) {
case 'INCREMENT':
return { count: state.count + 1 };
default:
return state;
}
}
const store = createStore(counterReducer);
```
## **Redux Toolkit**
Redux Toolkit is an official, recommended way to use Redux, which simplifies setup and reduces boilerplate.
**Example:**
```javascript
// store.js
import { configureStore, createSlice } from '@reduxjs/toolkit';
const counterSlice = createSlice({
name: 'counter',
initialState: { count: 0 },
reducers: {
increment: state => { state.count += 1; },
},
});
const store = configureStore({
reducer: {
counter: counterSlice.reducer,
},
});
export const { increment } = counterSlice.actions;
export default store;
```
## **Differences Between Local State, Context API, Redux, and Redux Toolkit**
**- Local State vs. Context API:**
Local state is confined to individual components, making it ideal for small, self-contained state needs. Context API, on the other hand, allows for state sharing across multiple components, avoiding prop drilling.
**- Redux vs. Redux Toolkit:**
Redux provides a traditional approach to state management with a lot of boilerplate. Redux Toolkit simplifies the process with utilities like createSlice and createAsyncThunk, making it easier to write clean, maintainable code.
## **Middleware:**
Middleware in Redux serves as a powerful extension point between dispatching an action and the moment it reaches the reducer. Middleware like Redux Thunk and Redux Saga enable advanced capabilities such as handling asynchronous actions and managing side effects.
**The Necessity of Middleware**
Middleware is essential for managing asynchronous operations and side effects in Redux applications. They help keep action creators and reducers pure and free from side effects, leading to cleaner, more maintainable code.
**1. Redux Thunk**
Redux Thunk simplifies asynchronous dispatch, allowing action creators to return functions instead of plain objects.
**Example:**
```javascript
const fetchData = () => async dispatch => {
dispatch({ type: 'FETCH_DATA_START' });
try {
const data = await fetch('/api/data').then(res => res.json());
dispatch({ type: 'FETCH_DATA_SUCCESS', payload: data });
} catch (error) {
dispatch({ type: 'FETCH_DATA_FAILURE', error });
}
};
```
**Use Case:** Redux Thunk is suitable for straightforward asynchronous actions like fetching data from an API.
**2. Redux Saga**
Redux Saga manages complex side effects using generator functions, providing a more structured and manageable approach to asynchronous logic.
**Example:**
```javascript
import { call, put, takeEvery } from 'redux-saga/effects';
function* fetchDataSaga() {
yield put({ type: 'FETCH_DATA_START' });
try {
const data = yield call(() => fetch('/api/data').then(res => res.json()));
yield put({ type: 'FETCH_DATA_SUCCESS', payload: data });
} catch (error) {
yield put({ type: 'FETCH_DATA_FAILURE', error });
}
}
function* watchFetchData() {
yield takeEvery('FETCH_DATA_REQUEST', fetchDataSaga);
}
```
**Use Case:** Redux Saga is ideal for handling complex asynchronous workflows, such as those involving multiple steps, retries, or complex conditional logic.
## **Differences Between Redux Thunk and Redux Saga**
**- Redux Thunk:**
Best for simpler, straightforward asynchronous actions. It allows action creators to return functions and is easy to understand and implement.
**- Redux Saga:**
Best for more complex, structured asynchronous workflows. It uses generator functions to handle side effects and provides a more powerful, albeit more complex, solution for managing asynchronous logic.
## **Conclusion**
Effective state management is crucial for building scalable and maintainable React applications. While local state and Context API serve well for simpler use cases, Redux and Redux Toolkit provide robust solutions for larger applications. Middleware like Redux Thunk and Redux Saga further enhance these state management tools by handling asynchronous actions and side effects, each catering to different levels of complexity in application logic.
In addition to these tools, there are other state management libraries that can be used with React, including:
**Recoil:** A state management library specifically designed for React, offering fine-grained control and easy state sharing across components. It simplifies state management by using atoms and selectors for state and derived state, respectively.
**MobX:** Focuses on simplicity and observable state, making it easier to handle complex forms and real-time updates. MobX provides a more reactive programming model, where state changes are automatically tracked and the UI is updated accordingly.
**Zustand:** A small, fast, and scalable state management solution. It uses hooks to manage state and provides a simple API to create stores and update state.
Choosing the right tool depends on the specific needs and complexity of your application. Understanding the strengths and use cases of each tool allows for more efficient and maintainable state management in your React applications. | wafa_bergaoui |
1,908,759 | Tenv v2.0: The Importance of Explicit Behavior for Version Manager | The explicit behavior of IAC version managers is quite crucial. It is especially critical in the... | 0 | 2024-07-02T10:46:07 | https://hackernoon.com/tenv-v20-the-importance-of-explicit-behavior-for-the-version-manager | infrastructureascode, terraform, softwaredevelopment, opentofu | The explicit behavior of [IAC](https://en.wikipedia.org/wiki/Infrastructure_as_code) version managers is quite crucial. It is especially critical in the realm of Terraform and OpenTofu because tool upgrades might destroy or corrupt all managed infrastructure. To protect users from unexpected updates, all version managers have to work clearly and without any internal wizardry that cannot be explained without a deep dive into the sources.
Tenv is a versatile version manager for [OpenTofu](https://opentofu.org/), [Terraform](https://www.terraform.io/), [Terragrunt](https://terragrunt.gruntwork.io/), and [Atmos](https://atmos.tools/), written in Go and developed by tofuutils team. This tool simplifies the complexity of handling different versions of these powerful tools, ensuring developers and DevOps professionals can focus on what matters most — building and deploying efficiently. Tenv is a successor of [tofuenv](https://github.com/tofuutils/tofuenv) and [tfenv](https://github.com/tfutils/tfenv).
In the process of tenv development, our team discovered quite an unpleasant surprise with Terragrunt and tenv, which may have created serious issues. On a fresh install of the Linux system, when one of our users attempted to run Terragrunt, the execution ended up utilizing OpenTofu instead of Terraform, with no warnings in advance. In the production environment, it might cause serious Terraform state corruption, but luckily it was a testing environment. Before we look at the root cause of this issue, I need to explain how the tenv works.
[Tenv](https://github.com/tofuutils/tenv) manages all tools by wrapping them in an additional binary that serves as a proxy for the original tool. It means you can't install Terraform or OpenTofu on an ordinary Linux machine alongside tenv (except [NixOS](https://nixos.org/) case). At our tool, we supply a binary with the same name as the tool (Terraform / OpenTofu / Terragrunt / Atmos), within which we implement the proxy pattern. It was required since it simplifies version management and allows us to add new capabilities to automatic version discovery and installation handling.
So, knowing that tenv is based on a downstream proxy architecture, we are ready to return to the problem. Why was our user's execution performed using OpenTofu rather than Terraform? The answer has two parts:
1. Terragrunt started to use OpenTofu as the default IAC tool, however, this was not a major release; instead, it was provided as a patch and users didn't expect to have any differences in the behavior. The original problem may be found [here](https://github.com/gruntwork-io/terragrunt/issues/3172).
2. When Terragrunt called OpenTofu in the new default behavior, it used tenv's proxy to check the required version of OpenTofu and install it automatically.
Although the `TERRAGRUNT_TFPATH` setting might control the behavior, users were unaware of the Terragrunt breaking change and were surprised to see OpenTotu at the end of execution. But why did OpenTofu execute if users did not have it in their system? Here we are dealing with the second issue that has arisen. At the start of tenv development, we replicated many features from the tfenv tool. One of these features was automatic tool installation, which is controlled by the `TFENV_AUTO_INSTALL` environment variable and is enabled by default. Tenv also has the `TENV_AUTO_INSTALL` variable, which is also was true by default unless the mentioned case hasn't been discovered.
Users who used Terraform / OpenTofu without Terragrunt via tenv may have encountered the auto-install when, for example, switching the version of the tool with the following command:
- `tenv tf use 1.5.3`
- `tenv tofu use 1.6.1`
The use command installed the required version even if it wasn’t present in the operation system locally.
After a brief GitHub [discussion](https://github.com/orgs/tofuutils/discussions/4), our team decided to disable auto-install by default and release this minor change as a new, major version of tenv. We made no major changes to the program, did not update the framework of the language version, and only updated the default variable, deciding that users should understand that one of the most often utilised and crucial behaviors had changed.
It's interesting that during the discussion, we disagreed on whether users should read the **README.md** or documentation, but whether you like it or not, it's true that people don't read the docs unless they're in difficulty. As the tofuutils team, we cannot accept the possibility that a user will mistakenly utilize OpenTofu in a real-world production environment and break the state or the cloud environment.
Finally, I'd like to highlight a few points once more:
- Implement intuitive behavior in your tool.
- Consider user experience and keep in mind that many people don't read manuals.
- Do not worry about releasing a major version if you made the breaking change.
- In programming, explicit is preferable to implicit, especially when dealing with state-sensitive tools.
| kvendingoldo |
1,908,758 | Remote Staffing Solutions | Embracing Remote Staffing Solutions: The Future of Outsourcing In today's dynamic business... | 0 | 2024-07-02T10:45:09 | https://dev.to/infomatic_solutions_e9a5a/remote-staffing-solutions-43kd | remotestaffingsolutions, remotestaffingcompany, outsourcingco |
**Embracing Remote Staffing Solutions:** The Future of Outsourcing
In today's dynamic business landscape, the concept of remote staffing has emerged as a transformative solution for companies worldwide. At Infomatic Solutions, we understand the pivotal role that remote staffing plays in driving efficiency, scalability, and cost-effectiveness for businesses of all sizes.
**The Benefits of Remote Staffing with Infomatic Solutions
****Access to Global Talent:** By opting for**[ remote staffing solutions ](https://www.infomaticsolutions.com/services/staffing-solutions/)**through Infomatic Solutions, businesses gain access to a vast talent pool spanning across various industries and skill sets. Whether you need IT specialists, digital marketers, customer support representatives, or administrative professionals, our extensive network ensures that you find the right talent to meet your specific requirements.
**Cost Efficiency: **Outsourcing tasks to remote staff can significantly reduce operational costs associated with recruitment, training, and infrastructure. Infomatic Solutions offers competitive pricing models that align with your budgetary constraints while maintaining high standards of service delivery.
**Flexibility and Scalability: **One of the standout advantages of remote staffing is its flexibility. Whether you need temporary assistance during peak seasons or long-term support for ongoing projects, Infomatic Solutions adapts to your changing business needs seamlessly. Scalability is no longer a concern, as you can scale your team up or down based on project demands without the overhead costs of traditional hiring.
**Enhanced Productivity:** Remote staff are often more productive due to reduced commute times, flexible work environments, and personalized schedules. At Infomatic Solutions, we emphasize effective communication and project management to ensure that remote teams integrate seamlessly into your operations and deliver results efficiently.
**Why Choose Infomatic Solutions?
**At Infomatic Solutions, we go beyond conventional outsourcing by prioritizing quality, reliability, and client satisfaction. Here’s what sets us apart:
**Expertise:** With years of experience in the outsourcing industry, Infomatic Solutions understands the nuances of remote staffing and strives to exceed client expectations.
**Tailored Solutions: **We believe in a personalized approach to every client engagement. Whether you are a startup looking to scale or an established enterprise seeking operational efficiency, our bespoke solutions are designed to address your unique business challenges.
**Technology-driven Approach: **Leveraging cutting-edge technology and robust infrastructure, Infomatic Solutions ensures seamless connectivity, data security, and collaboration across geographies.
Transform Your Business with Infomatic Solutions
Join the multitude of businesses worldwide that have embraced remote staffing as a strategic advantage. Partner with Infomatic Solutions today and unlock the full potential of remote workforce solutions tailored to your business goals.
Contact us to learn more about how our **[remote staffing](https://www.infomaticsolutions.com/services/staffing-solutions/)** solutions can drive your business forward. Together, let's build a future where distance is no longer a barrier to success.
**About Infomatic Solutions:
**Infomatic Solutions is a leading provider of outsourcing services specializing in remote staffing solutions. With a commitment to excellence and innovation, we empower businesses to thrive in a digital-first world. Connect with us to explore the possibilities of remote staffing and experience the Infomatic Solutions difference. | infomatic_solutions_e9a5a |
1,908,755 | GBWhatsApp APK Download v17.76 Official (Anti-Ban) July 2024 (Login Fixed) | Download GB WhatsApp APK Latest Version July 2024 Anti-Ban (Official). You Can Use it without Any... | 0 | 2024-07-02T10:43:40 | https://dev.to/rahil_khan_5649b113a48b73/gbwhatsapp-apk-download-v1776-official-anti-ban-july-2024-login-fixed-376p | gbwahtsapp, gbwhatsappapk, downloadgbwhatsappapk | Download GB WhatsApp APK Latest Version July 2024 Anti-Ban (Official). You Can Use it without Any Temporary Ban issue. Enjoy the Latest GB Whatsapp OFFICIAL With Extra Features. You will get a direct download link of GBWhatsApp APK without getting any viruses.
The much-anticipated official release of GBWhatsApp 2024 with no ads and no viruses is now available. Due to a number of clever elements, like an explosive splashy entertaining theme, fantastic typography, bright effects, electrifying emojis, and more, it is difficult to follow.
**[Download GBWhatsApp APK (v17.76)](https://www.apkmodedclub.com/)**
This fantastic WhatsApp mod might quietly enhance the user experience if you love the original WhatsApp but find it difficult to locate any fresh and exciting features on WhatsApp GB. It is an unexpected combination of the official WhatsApp and your thoughts. Try to use GBWhatsApp; if you do, you might discover lesser-known features that interest you.
For you today, we researched the finest WhatsApp mod. We’ll discuss GBWhatsApp APK with you in this article. With GBWA, you may have voice, chat, and video discussions as well as share data, contacts’ current locations, and media assets. One of the most well-liked WhatsApp mods for your device is GBWhatsApp Pro.
This WhatsApp hack has many features, including support for multiple accounts. On the other side, this mod isn’t accessible through app stores. However, you’re in luck since we’ve provided a download link for the GBWhatsApp APK below.
These days, a lot of individuals use WhatsApp to share music, videos, and other types of content. You can download and install GBWhatsApp APK on your device if you wish to utilize WhatsApp with a few more features. Developers have added some new features to the official WhatsApp, including the ability to hide double ticks, change themes, set the online status, use WhatsApp accounts, and many more. There is more privacy available in it, and using the software is free of charge.
## GBWhatsApp APK
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One of the best-customized instant messaging apps available is GB WhatsApp, a modified version of WhatsApp. It primarily tries to enhance the original application’s UI customization and privacy features. You may send voice chats, text messages, and photographs to your buddies with GBWhatsApp download APK, which has the same features as the original WhatsApp Messenger.
## GBWhatsApp Features
The GB Whatsapp APK 2024 is built with a tonne of features that can all be used on a smartphone. The following are GB Whatsapp’s features.
**Auto Reply:** To begin with, you can utilize this tool to automatically respond to any of your friends at any moment.
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1,908,751 | UI UX Design Blogs | The dynamic world of design can be overwhelming, but you're not alone! UIDesignz is your trusted... | 0 | 2024-07-02T10:42:49 | https://dev.to/uidesignz/ui-ux-design-blogs-14li | The dynamic world of design can be overwhelming, but you're not alone! UIDesignz is your trusted companion, shining a light on the path to design excellence. Our collection of UI design blogs offers actionable insights and engaging expertise to help you stay ahead of the curve. Discover practical tips, proven strategies, and real-world solutions to elevate your skills and achieve tangible results. Let us guide you towards design mastery, one blog at a time. For more visit
https://www.uidesignz.com/blogs | uidesignz | |
1,908,750 | Student Visa Canada: Your Pathway to Studying in Canada | Introduction Canada is one of the most popular destinations for international students, thanks to... | 0 | 2024-07-02T10:42:39 | https://dev.to/overseas/student-visa-canada-your-pathway-to-studying-in-canada-5c2n |
**Introduction**
Canada is one of the most popular destinations for international students, thanks to its high-quality education system, diverse cultural landscape, and welcoming environment. To study in Canada, you will need a student visa, also known as a study permit Canada. This article will guide you through the process of obtaining a student visa for Canada, covering the requirements, application process, and tips for a successful application.
**Why Study in Canada?**
Canada boasts some of the world's leading universities and colleges, offering a wide range of programs and degrees. Students benefit from a high standard of education, access to cutting-edge research facilities, and opportunities for practical experience. Additionally, Canada's multicultural society provides a unique experience, fostering global understanding and personal growth.
**Canada Student Visa Requirements**
To apply for a study permit in Canada, you must meet several requirements:
Letter of Acceptance: You need an acceptance letter from a Designated Learning Institution (DLI) in Canada.
Proof of Funds: You must show that you have enough money to pay for your tuition fees, living expenses, and return transportation.
No Criminal Record: You may be required to provide a police certificate.
Good Health: A medical exam may be necessary to prove you are in good health.
Genuine Intent to Study: You must prove to an immigration officer that you will leave Canada when your study permit expires.
How to Apply for a Canada Study Permit
1. Obtain an Acceptance Letter
The first step is to secure admission to a Canadian DLI. You will need an acceptance letter from the institution to include in your study permit application.
2. Prepare Your Documents
Gather all necessary documents, including:
Completed study permit application form
Proof of acceptance
Proof of identity (passport)
Proof of financial support
Letter of explanation
CAQ (for Quebec-bound students only)
3. Apply Online or Paper-Based
You can apply for a study permit online or through a paper application. The online process is faster and more convenient. Create an account on the Immigration, Refugees and Citizenship Canada (IRCC) website to begin your application.
4. Pay the Application Fee
There is a non-refundable application fee that must be paid when you submit your application. As of now, the fee is CAD 150.
5. Biometrics and Interview
You may be required to provide biometric information (fingerprints and photo) and possibly attend an interview at a local visa application center.
6. Wait for Processing
Processing times vary, so it's advisable to apply well in advance of your intended start date. You can check current processing times on the IRCC website.
7. Travel to Canada
Once your study permit is approved, you will receive a Port of Entry (POE) Letter of Introduction. You must show this letter to the immigration officer upon arrival in Canada to receive your study permit.
Tips for a Successful Application
Apply Early: Start your application process as early as possible to account for any delays.
Complete Documentation: Ensure all documents are complete and accurate to avoid processing delays.
Proof of Funds: Clearly demonstrate that you have sufficient funds for your stay in Canada.
Letter of Explanation: Write a clear letter explaining why you want to study in Canada and your future plans.
**Conclusion**
Obtaining a [student visa for Canada](https://www.y-axis.ca/visa/study/canada/) is a crucial step towards achieving your educational goals in a country known for its academic excellence and cultural diversity. By following the outlined steps and preparing thoroughly, you can enhance your chances of a successful application. Embark on your Canadian educational journey and unlock a world of opportunities!
| overseas | |
1,908,749 | Apartments in Peachtree Corners: A Comprehensive Guide | Luxury Apartments: These high-end apartments offer premium amenities such as swimming pools, fitness... | 0 | 2024-07-02T10:41:17 | https://dev.to/elevateatjatt65/apartments-in-peachtree-corners-a-comprehensive-guide-3284 | Luxury Apartments: These high-end apartments offer premium amenities such as swimming pools, fitness centers, and concierge services. They are often located in prime areas with easy access to shopping, dining, and entertainment options.
Mid-range Apartments: These apartments offer a good balance of affordability and amenities. They typically include essential features such as in-unit laundry, modern kitchens, and access to community facilities like gyms and pools.
Affordable Apartments: For those on a tighter budget, there are several affordable apartment options in Peachtree Corners. These units may have fewer amenities but still provide comfortable living spaces in convenient locations.
Family-friendly Apartments: These apartments are designed with families in mind, offering larger floor plans, proximity to good schools, and family-oriented community features such as playgrounds and parks.
https://www.elevateatjacksoncreek.com/ | elevateatjatt65 | |
1,908,748 | The Ultimate Guide to Finding and Using Free APIs | Application Programming Interfaces (APIs) serve as integral tools in the world of software... | 0 | 2024-07-02T10:38:48 | https://dev.to/sattyam/the-ultimate-guide-to-finding-and-using-free-apis-2imb | api | Application Programming Interfaces (APIs) serve as integral tools in the world of software development, enabling various programs to interact and share data seamlessly. APIs can be broadly classified into two types: **Private APIs**, which are restricted for internal use within a company, and **Public APIs**, accessible to anyone interested in utilizing them.
## Introduction to Free APIs
Free APIs are available at **no cost** and are often provided by entities to foster the integration of their services or data into broader applications. These APIs can range in functionality from fetching external data, interfacing with other web services, or facilitating task automation, without incurring costs.
Developers interact with these APIs through specific programming commands or protocols to request data or services, providing necessary parameters. In turn, the API delivers the requested information back to the developer.
## Advantages of Using Free APIs
Leveraging Free APIs offers a series of benefits including:
1. **Resource Efficiency**: They expedite development by offering ready-to-use features.
2. **Expertise at Hand**: Users gain from the continual enhancements influenced by expert maintenance.
3. **Focus on Core Development**: They allow developers to concentrate on building distinctive application features rather than on rudimentary components.
4. **Scalability**: They are built to manage incrementally increasing loads and user demands efficiently.
5. **Current Integration**: Regular updates ensure alignment with contemporary advancements and technologies.
## Step-by-Step Guide to Employing Free APIs
To effectively use free APIs, follow these outlined steps:
1. **Assess Requirements**: Clearly identify the exact functionality or data needed from the API.
2. **Select a Competent Provider**: Utilize platforms like Apidog API Hub, known for reliability.
3. **Account Registration**: Complete the sign-up process with the API provider.
4. **Choose Suitable API**: Select an API that aligns closely with your requirements.
5. **Comprehend Documentation**: Understand the API's capabilities and constraints thoroughly through its documentation.
6. **Obtain API Key**: Secure an API key that facilitates access and use of the chosen API.
7. **API Testing**: Verify API functionality using tools designed to test and debug APIs.
8. **Integrate API**: Embed the API within your project to enhance its capabilities.
By following these detailed steps, developers can effectively find, test, and utilize free APIs in their projects, enriching application functionalities without overhead costs.
## Criteria for Excellent Open APIs
A robust open API should exhibit:
- **Clarity in Documentation**: It should offer straightforward usage directions and examples.
- **Customizability**: Flexibility to tailor the API to specific developer needs should be a given.
- **Robust Security**: Essential to safeguard user data and interactions.
- **High Availability**: It should ensure minimal downtime and reliable user access.
- **Stable & Consistent**: Crucial for developers expecting predictable performance.
- **Active Community Support**: A supportive ecosystem can enhance developer experience and problem-solving.
## Exploring Apidog API Hub
**[Apidog](https://www.apidog.com/?utm_source=&utm_medium=blogger&utm_campaign=test1)** API Hub is a comprehensive platform hosting an assortment of Free APIs across multiple domains such as finance, weather, and social media. The hub aids developers in discovering and integrating these APIs efficiently into their applications.
Features of Apidog [API Hub](https://apidog.com/apihub/) include:
- **API Management**: Tools to handle API keys, monitor usage, and performance.
- **Collaboration Tools**: Facilities for team cooperation and API sharing.
- **Enhanced Security**: Ensures secured API interactions.
- **Ease of Integration**: Seamless compatibility with various development tools.
- **Dedicated Support**: Assistance for API integration and troubleshooting.
To start using Free APIs from Apidog API Hub, simply visit the website, register, and explore the plethora of APIs available, tailored to meet various development needs.
## Example APIs Offered by Apidog
Apidog API Hub offers diverse APIs like:
- **OpenWeatherMap**: Provides comprehensive weather data globally.
- **NewsAPI**: Accesses contemporary news from multiple sources.
- **Twitter API**: Facilitates interaction with Twitter data.
- **Google Maps API**: Enables incorporation of map features.
- **Alpha Vantage**: Offers extensive financial market data.
These APIs provide a wide range of services, facilitating extensive application functionalities.
## Best Practices for API Utilization
Ensuring efficient use of free APIs involves:
- **Thorough Documentation Review**: Understand every facet of the API thoroughly.
- **Awareness of API Limits**: Recognize and adhere to usage limitations.
- **Graceful Error Handling**: Implement user-friendly error responses.
- **Data Caching**: Optimize performance and limit requests by caching data.
- **Monitoring Usage**: Keep track of performance and adapt usage as needed.
Adhering to these practices ensures reliable and efficient API use, enhancing overall application performance and user satisfaction.
## Implementing Free APIs with Apidog
Apidog's API Hub offers an invaluable resource, providing access to multifarious APIs that bolster application functionalities at no extra cost. The platform’s expansive API collection, coupled with robust management tools and support, makes it an ideal choice for developers aiming to enhance their applications efficiently.
Explore the transformative potential of Free APIs by signing up at [Apidog API Hub](https://www.apidog.com/apihub/) and start enriching your applications today. | sattyam |
1,908,707 | AWS cost last resort, the killer lambda | Having full control over your Amazon Web Services (AWS) costs isn't that easy. This is the... | 27,937 | 2024-07-02T10:37:38 | https://dev.to/kodsama/aws-cost-control-last-resort-the-killer-lambda-5mk | aws, cost, lambda, devops | Having full control over your Amazon Web Services (AWS) costs isn't that easy.
This is the continuation from my previous article [Controlling AWS Lambda Costs](https://dev.to/kodsama/controlling-aws-lambda-costs-2kn8).
Now that you have set up alerts and limit possible overflows it is time to come to the last resort, starting to kill things.
Of course, one could always manually tear down services when the budget is going too high, but many of us would rather spend hours once to automate this instead by creating a **killer lambda**. 😄
**Here are some steps I would recommend**
* [Setting up Billing Alarms](#budget)
* [Using a killer lambda](#killer)
* [General setup](#setup)
* [Killer lambda](#kill)
* [Recovery lambda](#recover)
* [Closing thoughts](#closing)
## Setting up Billing Alarms <a name="budget"></a>
The first and foremost thing to do is to set up budget alerts for the whole AWS cost.
Billing Alarms are the essential tool for monitoring your AWS costs. It is an easy way to get notified if your monthly AWS bill is estimated to cross a set threshold.
The [official documentation](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/monitor_estimated_charges_with_cloudwatch.html) is great.
1. **Create a Budget**:
* Go to the AWS Management Console.
* Navigate to the AWS Budgets dashboard.
* Click on "Create a budget."
* Follow the steps to create a budget. Set the budget amount to your desired limit.
2. **Configure Alerts**:
* Set up alert notifications for when your budget threshold is reached. You can choose to receive alerts via email or SNS (Simple Notification Service).
* To use SNS, create an SNS topic if you don't have one, and add subscribers to the topic (e.g., your email address).
Now, when you reach the budget (or expected budget), you will get an email or be able to trigger things with the alert email using SNS. 😉
## Using a killer lambda <a name="killer"></a>
To prevent AWS API Gateway and AWS Lambda from being invoked when a specific budget is reached, we will combine multiple AWS tools:
* **[Billing Alerts:](https://aws.amazon.com/pricing)** to send an SNS notification when the budget is reached
* **[Simple Notification Service (SNS):](https://aws.amazon.com/sns/)** to handle the notification and trigger a lambda
* **[Lambda:](https://aws.amazon.com/lambda/)** to do the work of killing/restoring permissions and parameters
* **[EventBridge Scheduler](https://aws.amazon.com/eventbridge):** to schedule the recovery lambda
* **[DynamoDB:](https://aws.amazon.com/dynamodb/)** to store the parameters which will be changed
The idea is this:
1. The Billing Alert will send a message on SNS (see [Setting up Billing Alarms](#budget)).
2. The SNS message will trigger a killer lambda.
3. The killer lambda will store current parameters of each lambda and EC2 instances in a DynamoDB table to restore them later.
4. The killer lambda will:
* Limit the API Gateway rate
* Change lambda parameters to prevent their invocation (be careful to not kill the recovery lambda!)
* Stop EC2 instances
5. At the beginning of each billing cycle, the recovery lambda will be triggered (via EventBridge Scheduler).
6. The recovery lambda will read DynamoDB and restore the lambda parameters.
**NOTE:** We need to prevent the killer lambda from killing the recovery lambda. For this, we need to first create the recovery lambda to get its name in the whitelist and avoid it being killed.
### General setup <a name="setup"></a>
#### Step 1: Set Up AWS Budgets and send alert to SNS
See [Setting up Billing Alarms](#budget)
#### Step 2: Create the DynamoDB database
We need to ensure that the [DynamoDB](https://aws.amazon.com/dynamodb/) has the following attributes:
* Table Name: LambdaAndApiSettings
* Primary Key / Partition Key: ResourceID (String)
You can create the table using the AWS Management Console:
1. Go to the [DynamoDB section](https://eu-west-1.console.aws.amazon.com/dynamodbv2).
2. Click on "Create table".
3. Set the table name to LambdaAndApiSettings.
4. Add a primary key/Sort key with the name FunctionName and type String.
5. Click "Create".
#### Step 3: (after creating lambdas) Give proper permissions in IAM
Ensure that the IAM role associated with your Lambda function has the necessary permissions. You need to attach a policy to the role that allows access to DynamoDB and Lambda APIs.
Required Permissions:
* DynamoDB: AmazonDynamoDBFullAccess
* Lambda: AWSLambda_FullAccess
* EC2 instances: AmazonEC2FullAccess
* API Gateway: AmazonAPIGatewayAdministrator
### Recovery lambda <a name="recover"></a>
To re-enable the services, you can set up a scheduled Lambda function that runs at the beginning of each budget period (e.g., monthly). This function will reset the throttling limits on the API Gateway stages and re-enable the Lambda functions.
#### Step 1: Create the Lambda Function
* In the AWS Lambda console, create a new Lambda function.
* Set the Lambda type to Python.
* Use the following Python code:
```python
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Author: Alexandre Martins (a.k.a Kodsama)
"""
This Lambda function restores the previous state of API Gateway stages, specified Lambda functions,
and EC2 instances using settings saved in DynamoDB. It retrieves the saved settings from DynamoDB
and re-applies them to the respective resources. The settings were initially saved by the disabling
Lambda to ensure the ability to restore the original state.
"""
import boto3
import os
import logging
import json
from botocore.client import BaseClient
from botocore.exceptions import ClientError
# Set up logging
logger = logging.getLogger()
logger.setLevel(logging.INFO)
# Initialize clients
api_client = boto3.client("apigateway")
lambda_client = boto3.client("lambda")
dynamodb = boto3.resource("dynamodb")
table = dynamodb.Table("LambdaAndApiSettings")
def lambda_handler(event: dict, context: object):
"""
The main handler function for the Lambda function. It restores the previous state of API Gateway stages,
specified Lambda functions using settings saved in DynamoDB.
Args:
event (dict): The event data that triggered the Lambda function [UNUSED].
context (object): The context object containing metadata about the Lambda invocation.
Returns:
dict: A dictionary containing the status code and message.
"""
try:
# Get environment variables
rest_api_id = os.environ.get("API_GATEWAY_ID")
self_name = context.function_name # Get the name of the current Lambda function
simulate = os.environ.get("SIMULATE", "false").lower() == "true"
# Lambda
restore_all_lambdas = os.environ.get("RESTORE_ALL_LAMBDAS", "false").lower() == "true"
lambdas_restore_list = os.environ.get("LAMBDAS_TO_RESTORE", "").split(",")
lambdas_restore_list = [] if lambdas_restore_list == [""] else lambdas_restore_list
lambdas_blacklist = os.environ.get("BLACKLISTED_LAMBDAS", "").split(",")
lambdas_blacklist = [] if lambdas_blacklist == [""] else lambdas_blacklist
# Process API Gateway stages
if rest_api_id:
restore_api_gateway_stages(rest_api_id, api_client, simulate)
# Process Lambda functions
if restore_all_lambdas:
restore_all_lambdas_function(lambda_client, self_name, lambdas_blacklist, simulate)
elif lambdas_restore_list:
restore_specified_lambdas(lambda_client, lambdas_restore_list, self_name, lambdas_blacklist, simulate)
else:
logger.warn("No Lambda functions specified for restoration. Skipping restoring Lambda functions.")
logger.info(
"All done! API Gateway stages, specified Lambda functions have been restored successfully."
)
return {"statusCode": 200, "body": "API Gateway, Lambda functions, and EC2 instances restoration complete"}
except Exception as e:
logger.error(f"Error occurred: {str(e)}", exc_info=True)
return {
"statusCode": 500,
"body": "Error occurred while restoring API Gateway, Lambda functions, and EC2 instances",
}
def restore_api_gateway_stages(api_client: BaseClient, rest_api_id: str, simulate: bool):
"""
Restore the stages of an API Gateway using settings saved in DynamoDB.
Args:
api_client (BaseClient): The API Gateway client.
rest_api_id (str): The ID of the API Gateway.
simulate (bool): Whether to simulate restoring the API Gateway stages.
Raises:
Exception: If an error occurs while restoring the stages.
"""
assert isinstance(api_client, BaseClient), f"api_client must be a boto3 client instance, not {type(api_client)}"
assert (
isinstance(rest_api_id, str) and rest_api_id
), f"rest_api_id must be a non-empty string, not {type(rest_api_id)}"
assert isinstance(simulate, bool), f"simulate must be a boolean, not {type(simulate)}"
if not rest_api_id:
logger.info(f"No API Gateway ID provided. Skipping.")
return
try:
logger.info(f"Restoring stages for API Gateway with ID: {rest_api_id}")
stages = api_client.get_stages(restApiId=rest_api_id)
for stage in stages["item"]:
stage_name = stage["stageName"]
logger.info(f"Restoring stage: {stage_name}")
# Retrieve saved API Gateway stage settings from DynamoDB
stage_settings = get_saved_settings(f"api-{rest_api_id}-{stage_name}")
if not stage_settings:
stage_settings = {
"burstLimit": os.environ.get("DEFAULT_BURST_LIMIT", "1000"),
"rateLimit": os.environ.get("DEFAULT_RATE_LIMIT", "500"),
}
if simulate:
logger.info(f"Simulation mode: API Gateway stage {stage_name} would be restored.")
continue
# Restore API Gateway stage
api_client.update_stage(
restApiId=rest_api_id,
stageName=stage_name,
patchOperations=[
{
"op": "replace",
"path": "/*/*/throttling/burstLimit",
"value": str(stage_settings["burstLimit"]),
},
{"op": "replace", "path": "/*/*/throttling/rateLimit", "value": str(stage_settings["rateLimit"])},
],
)
logger.info(f"Stage {stage_name} restored.")
except api_client.exceptions.ClientError as e:
logger.error(f"Failed to restore API Gateway stages: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error(
"Access denied. Ensure the IAM role has the following permissions: AmazonAPIGatewayAdministrator."
)
raise
def restore_all_lambdas_function(
lambda_client: BaseClient,
self_name: str,
lambdas_blacklist: list,
simulate: bool = True,
):
"""
Restore all Lambda functions using settings saved in DynamoDB.
Args:
lambda_client (BaseClient): The Lambda client.
self_name (str): The name of the current Lambda function.
lambdas_blacklist (list): A list of blacklisted Lambda function names.
simulate (bool): Whether to simulate restoring the Lambda functions.
Raises:
Exception: If an error occurs while restoring the Lambda functions.
"""
assert isinstance(
lambda_client, BaseClient
), f"lambda_client must be a boto3 client instance, not {type(lambda_client)}"
assert isinstance(self_name, str) and self_name, f"self_name must be a non-empty string, not {type(self_name)}"
assert isinstance(simulate, bool), f"simulate must be a boolean, not {type(simulate)}"
logger.info("Restoring all Lambda functions in the account.")
paginator = lambda_client.get_paginator("list_functions")
all_lambdas_restore_list = []
for page in paginator.paginate():
for function in page["Functions"]:
all_lambdas_restore_list.append(function["FunctionName"])
restore_specified_lambdas(lambda_client, all_lambdas_restore_list, self_name, lambdas_blacklist, simulate)
def restore_specified_lambdas(
lambda_client: BaseClient,
lambdas_restore_list: list,
self_name: str,
lambdas_blacklist: list,
simulate: bool = True,
):
assert isinstance(lambda_client, BaseClient), f"lambda_client must be a boto3 client instance, not {type(lambda_client)}"
assert isinstance(lambdas_restore_list, list), f"lambdas_restore_list must be a list, not {type(lambdas_restore_list)}"
assert isinstance(self_name, str) and self_name, f"self_name must be a non-empty string, not {type(self_name)}"
assert isinstance(lambdas_blacklist, list), f"lambdas_blacklist must be a list, not {type(lambdas_blacklist)}"
assert isinstance(simulate, bool), f"simulate must be a boolean, not {type(simulate)}"
logger.info(f"Restore Lambdas: {lambdas_restore_list}")
if not lambdas_restore_list:
logger.warn(f"Attempting to restore an empty list of Lambdas")
return
for function_name in lambdas_restore_list:
if function_name == self_name or function_name in lambdas_blacklist:
logger.info(f"Skipping blacklisted or current Lambda function: {function_name}")
continue
try:
saved_settings = get_saved_settings(function_name)
if not saved_settings:
saved_settings = {"Concurrency": os.environ.get("DEFAULT_CONCURRENCY", None), "Permissions": []}
if simulate:
logger.info(f"Simulation mode: Lambda function {function_name} would be restored.")
continue
if saved_settings["Concurrency"] is not None:
lambda_client.put_function_concurrency(
FunctionName=function_name, ReservedConcurrentExecutions=saved_settings["Concurrency"]
)
logger.info(f"Restored concurrency for Lambda function: {function_name}")
for permission in saved_settings["Permissions"]:
principal = permission["Principal"]
if isinstance(principal, dict) and "Service" in principal:
principal = principal["Service"]
try:
lambda_client.add_permission(
FunctionName=function_name,
StatementId=permission["Sid"],
Action=permission["Action"],
Principal=principal,
)
logger.info(f"Restored permission {permission['Sid']} for Lambda function: {function_name}")
except ClientError as e:
if e.response['Error']['Code'] == 'ResourceConflictException':
logger.warning(f"Permission with StatementId {permission['Sid']} already exists for Lambda function: {function_name}. Skipping...")
else:
raise e
except ClientError as e:
logger.error(f"Failed to restore Lambda function {function_name}: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error(
f"Access denied. Ensure the IAM role has the following permissions: lambda:PutFunctionConcurrency, lambda:AddPermission."
)
raise
def get_saved_settings(resource_id: str) -> dict:
"""
Retrieve settings from DynamoDB. If no data is found, return the default settings.
Args:
resource_id (str): The unique identifier for the resource.
Returns:
dict: The retrieved settings or empty dict if non existing.
"""
try:
response = table.get_item(Key={"ResourceID": resource_id})
if "Item" in response:
logger.debug(f"Found settings for {resource_id}")
return response["Item"]["Settings"]
else:
logger.warn(f"No saved settings found for {resource_id}, using default settings.")
return {}
except dynamodb.meta.client.exceptions.ClientError as e:
logger.error(f"Failed to retrieve settings from DynamoDB for {resource_id}: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error("Access denied. Ensure the IAM role has the following permissions: AmazonDynamoDBFullAccess.")
raise
except Exception as e:
logger.error(f"Error retrieving saved data for {resource_id}: {e}")
raise
```
#### Environment Variables
* `API_GATEWAY_ID`: The ID of the API Gateway whose stages are to be restored.
* `SIMULATE`: When set to `true`, the lambda will simulate actions without making actual changes.
* `RESTORE_ALL_LAMBDAS`: When set to `true`, all Lambda functions will be restored, except those in the blacklist.
* `LAMBDAS_TO_RESTORE`: A comma-separated list of specific Lambda function names to restore.
* `BLACKLISTED_LAMBDAS`: A comma-separated list of Lambda function names that should not be restored.
* `RESTORE_ALL_EC2_INSTANCES`: When set to `true`, all EC2 instances will be restored, except those in the blacklist.
* `EC2_TO_RESTORE`: A comma-separated list of specific EC2 instance IDs to restore.
* `BLACKLISTED_EC2_INSTANCES`: A comma-separated list of EC2 instance IDs that should not be restored.
* `DEFAULT_BURST_LIMIT`: The default burst limit for API Gateway throttling, used if no data is found in DynamoDB.
* `DEFAULT_RATE_LIMIT`: The default rate limit for API Gateway throttling, used if no data is found in DynamoDB.
* `DEFAULT_CONCURRENCY`: The default Lambda concurrency value, used if no data is found in DynamoDB.
#### Step 2: Give the Lambda function full access in IAM
See [General setup](#setup)
#### Step 3: Create a CloudWatch Event Rule
1. Go to the [EventBridge Scheduler](https://aws.amazon.com/eventbridge).
2. Navigate to "EventBridge Schedule".
3. Click "Create Schedule".
4. Choose a schedule name and description.
5. Set to recurring schedule and CRON based schedule.
6.
If your budget period is monthly, you can use a cron expression like `cron(0 0 1 * ? *)` to run the function at midnight on the first day of each month.
7. Select no flexible time window and click Next.
8. Click on Invoke an AWS Lambda and select the recover lambda as the Target.
9. Ensure the Lambda function has the necessary permissions to be invoked by the CloudWatch Events rule. Click on Next.
10. Review the schedule and create it!
### Killer lambda <a name="kill"></a>
#### Step 1: Create a Lambda Function
* In the AWS Lambda console, create a new Lambda function.
* Set the Lambda type to Python.
* Use the following Python code:
```python
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
# Author: Alexandre Martins (a.k.a Kodsama)
"""
This Lambda disables API Gateway stages, specified Lambda functions, and stops EC2 instances, saving their settings to DynamoDB.
It processes environment variables to determine which resources to disable and whether to simulate the action.
The settings of the resources are saved to DynamoDB before any changes are made, ensuring that current states are preserved.
"""
import boto3
import os
import logging
import json
from botocore.client import BaseClient
# Set up logging
logger = logging.getLogger()
logger.setLevel(logging.INFO)
# Initialize clients
api_client = boto3.client("apigateway")
lambda_client = boto3.client("lambda")
ec2_client = boto3.client("ec2")
dynamodb = boto3.resource("dynamodb")
table = dynamodb.Table("LambdaAndApiSettings")
def lambda_handler(event: dict, context: object):
"""
The main handler function for the Lambda function. It disables API Gateway stages, specified
Lambda functions, and stops EC2 instances, saving their settings to DynamoDB.
Args:
event (dict): The event data that triggered the Lambda function [UNUSED].
context (object): The context object containing metadata about the Lambda invocation.
Returns:
dict: A dictionary containing the status code and message.
"""
try:
# Get environment variables
rest_api_id = os.environ.get("API_GATEWAY_ID")
self_name = context.function_name # Get the name of the current Lambda function
simulate = os.environ.get("SIMULATE", "false").lower() == "true"
# Lambda
lambdas_disable_all = os.environ.get("DISABLE_ALL_LAMBDAS", "false").lower() == "true"
lambdas_disable_list = os.environ.get("LAMBDAS_TO_DISABLE", "").split(",")
lambdas_disable_blacklist = os.environ.get("LAMBDAS_TO_NOT_DISABLE", "").split(",")
lambdas_disable_list = [] if lambdas_disable_list == [""] else lambdas_disable_list
lambdas_disable_blacklist = [] if lambdas_disable_blacklist == [""] else lambdas_disable_blacklist
# EC2
ec2_disable_all = os.environ.get("DISABLE_ALL_EC2_INSTANCES", "false").lower() == "true"
ec2_disable_list = os.environ.get("EC2_TO_DISABLE", "").split(",")
ec2_disable_blacklist = os.environ.get("EC2_TO_NOT_DISABLE", "").split(",")
ec2_disable_list = [] if ec2_disable_list == [""] else ec2_disable_list
ec2_disable_blacklist = [] if ec2_disable_blacklist == [""] else ec2_disable_blacklist
# Process API Gateway stages
if rest_api_id:
disable_api_gateway_stages(rest_api_id, api_client, simulate)
# Process Lambda functions
if lambdas_disable_all:
disable_all_lambdas(lambda_client, self_name, lambdas_disable_blacklist, simulate)
elif lambdas_disable_list:
disable_specified_lambdas(
lambda_client, lambdas_disable_list, self_name, lambdas_disable_blacklist, simulate
)
else:
logger.warn(
"No Lambda functions specified and DISABLE_ALL_LAMBDAS is not true. Skipping disabling Lambda functions."
)
# Process EC2 instances
if ec2_disable_all:
disable_all_ec2(ec2_client, simulate)
elif ec2_disable_list:
disable_specified_ec2(ec2_client, ec2_disable_list, ec2_disable_blacklist, simulate)
else:
logger.warn(
"No EC2 instances specified and DISABLE_ALL_EC2_INSTANCES is not true. Skipping disabling EC2 instances."
)
logger.info(
"All done! API Gateway stages, specified Lambda functions, and EC2 instances have been processed successfully."
)
return {"statusCode": 200, "body": "API Gateway, Lambda functions, and EC2 instances processing complete"}
except Exception as e:
logger.error(f"Error occurred: {str(e)}", exc_info=True)
return {
"statusCode": 500,
"body": "Error occurred while processing API Gateway, Lambda functions, and EC2 instances",
}
def disable_api_gateway_stages(api_client: BaseClient, rest_api_id: str, simulate: bool):
"""
Disable the stages of an API Gateway and save their current settings to DynamoDB.
Args:
api_client (BaseClient): The API Gateway client.
rest_api_id (str): The ID of the API Gateway.
simulate (bool): Whether to simulate disabling the API Gateway stages.
Raises:
Exception: If an error occurs while disabling the stages.
"""
assert isinstance(api_client, BaseClient), f"api_client must be a boto3 client instance, not {type(api_client)}"
assert (
isinstance(rest_api_id, str) and rest_api_id
), f"rest_api_id must be a non-empty string, not {type(rest_api_id)}"
assert isinstance(simulate, bool), f"simulate must be a boolean, not {type(simulate)}"
if not rest_api_id:
logger.info(f"No API Gateway ID provided. Skipping.")
return
try:
logger.info(f"Disabling stages for API Gateway with ID: {rest_api_id}")
stages = api_client.get_stages(restApiId=rest_api_id)
for stage in stages["item"]:
stage_name = stage["stageName"]
logger.info(f"Disabling stage: {stage_name}")
# Save current API Gateway stage settings to DynamoDB
stage_settings = {
"burstLimit": stage.get("methodSettings", {}).get("/*/*/throttling/burstLimit", "default"),
"rateLimit": stage.get("methodSettings", {}).get("/*/*/throttling/rateLimit", "default"),
}
save_to_dynamodb(f"api-{rest_api_id}-{stage_name}", stage_settings)
if simulate:
logger.info(f"Simulation mode: API Gateway stage {stage_name} would be disabled.")
continue
# Disable API Gateway stage
api_client.update_stage(
restApiId=rest_api_id,
stageName=stage_name,
patchOperations=[
{"op": "replace", "path": "/*/*/throttling/burstLimit", "value": "0"},
{"op": "replace", "path": "/*/*/throttling/rateLimit", "value": "0"},
],
)
logger.info(f"Stage {stage_name} disabled.")
except api_client.exceptions.ClientError as e:
logger.error(f"Failed to disable API Gateway stages: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error(
"Access denied. Ensure the IAM role has the following permissions: AmazonAPIGatewayAdministrator."
)
raise
def disable_all_lambdas(
lambda_client: BaseClient, self_name: str, lambdas_disable_blacklist: list, simulate: bool = True
):
"""
Disable all Lambda functions except the current one and blacklisted ones, and save their settings to DynamoDB.
Args:
lambda_client (BaseClient): The Lambda client.
self_name (str): The name of the current Lambda function.
lambdas_disable_blacklist (list): A list of blacklisted Lambda function names.
simulate (bool): Whether to simulate disabling the Lambda functions.
Raises:
Exception: If an error occurs while disabling the Lambda functions.
"""
assert isinstance(
lambda_client, BaseClient
), f"lambda_client must be a boto3 client instance, not {type(lambda_client)}"
assert isinstance(self_name, str) and self_name, f"self_name must be a non-empty string, not {type(self_name)}"
assert isinstance(
lambdas_disable_blacklist, list
), f"lambdas_disable_blacklist must be a list, not {type(lambdas_disable_blacklist)}"
assert isinstance(simulate, bool), f"simulate must be a boolean, not {type(simulate)}"
logger.info("Disabling all Lambda functions in the account.")
paginator = lambda_client.get_paginator("list_functions")
all_lambdas_disable_list = []
for page in paginator.paginate():
for function in page["Functions"]:
all_lambdas_disable_list.append(function["FunctionName"])
disable_specified_lambdas(lambda_client, all_lambdas_disable_list, self_name, lambdas_disable_blacklist, simulate)
def disable_specified_lambdas(
lambda_client: BaseClient,
lambdas_disable_list: list,
self_name: str,
lambdas_disable_blacklist: list,
simulate: bool = True,
):
"""
Disable specified Lambda functions except the current one and blacklisted ones, and save their settings to DynamoDB.
Args:
lambda_client (BaseClient): The Lambda client.
lambdas_disable_list (list): A list of Lambda function names.
self_name (str): The name of the current Lambda function.
lambdas_disable_blacklist (list): A list of blacklisted Lambda function names.
simulate (bool): Whether to simulate disabling the Lambda functions.
Raises:
Exception: If an error occurs while disabling the Lambda functions.
"""
assert isinstance(
lambda_client, BaseClient
), f"lambda_client must be a boto3 client instance, not {type(lambda_client)}"
assert isinstance(
lambdas_disable_list, list
), f"lambdas_disable_list must be a list, not {type(lambdas_disable_list)}"
assert isinstance(self_name, str) and self_name, f"self_name must be a non-empty string, not {type(self_name)}"
assert isinstance(
lambdas_disable_blacklist, list
), f"lambdas_disable_blacklist must be a list, not {type(lambdas_disable_blacklist)}"
assert isinstance(simulate, bool), f"simulate must be a boolean, not {type(simulate)}"
logger.info(f"Disable Lambdas: {lambdas_disable_list}")
if not lambdas_disable_list:
logger.warn(f"Attempting to disable an empty list of Lambdas")
return
for function_name in lambdas_disable_list:
if function_name == self_name or function_name in lambdas_disable_blacklist:
logger.info(f"Skipping blacklisted or current Lambda function: {function_name}")
continue
try:
# Save current Lambda settings to DynamoDB
save_lambda_settings(lambda_client, function_name)
if simulate:
logger.info(f"Simulation mode: Lambda function {function_name} would be disabled.")
continue
# Disable concurrency
logger.info(f"Disabling Lambda function: {function_name}")
lambda_client.put_function_concurrency(FunctionName=function_name, ReservedConcurrentExecutions=0)
logger.info(f"Lambda function {function_name} disabled.")
except lambda_client.exceptions.ClientError as e:
logger.error(f"Failed to disable Lambda function {function_name}: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error(
f"Access denied. Ensure the IAM role has the following permissions: lambda:PutFunctionConcurrency."
)
raise
def disable_all_ec2(ec2_client: BaseClient, simulate: bool = True):
"""
Stop all EC2 instances and save their settings to DynamoDB.
Args:
ec2_client (BaseClient): The EC2 client.
simulate (bool): Whether to simulate stopping the EC2 instances.
Raises:
Exception: If an error occurs while stopping the EC2 instances.
"""
assert isinstance(ec2_client, BaseClient), f"ec2_client must be a boto3 client instance, not {type(ec2_client)}"
assert isinstance(simulate, bool), f"simulate must be a boolean, not {type(simulate)}"
try:
logger.info("Stopping all EC2 instances in the account.")
response = ec2_client.describe_instances()
instances = [
instance["InstanceId"] for reservation in response["Reservations"] for instance in reservation["Instances"]
]
disable_specified_ec2(ec2_client, instances, [], simulate)
except ec2_client.exceptions.ClientError as e:
logger.error(f"Failed to stop EC2 instances: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error("Access denied. Ensure the IAM role has the following permissions: AmazonEC2FullAccess.")
raise
def disable_specified_ec2(
ec2_client: BaseClient, ec2_disable_list: list, ec2_disable_blacklist: list, simulate: bool = True
):
"""
Stop specified EC2 instances except blacklisted ones, and save their settings to DynamoDB.
Args:
ec2_client (BaseClient): The EC2 client.
ec2_disable_list (list): A list of EC2 instance IDs to stop.
ec2_disable_blacklist (list): A list of blacklisted EC2 instance IDs.
simulate (bool): Whether to simulate stopping the EC2 instances.
Raises:
Exception: If an error occurs while stopping the EC2 instances.
"""
assert isinstance(ec2_client, BaseClient), f"ec2_client must be a boto3 client instance, not {type(ec2_client)}"
assert isinstance(ec2_disable_list, list), f"ec2_disable_list must be a list, not {type(ec2_disable_list)}"
assert isinstance(
ec2_disable_blacklist, list
), f"ec2_disable_blacklist must be a list, not {type(ec2_disable_blacklist)}"
assert isinstance(simulate, bool), f"simulate must be a boolean, not {type(simulate)}"
logger.info(f"Disable EC2 instances: {ec2_disable_list} (exempt: {ec2_disable_blacklist})")
for instance_id in ec2_disable_list:
if instance_id in ec2_disable_blacklist:
logger.info(f"Skipping blacklisted EC2 instance: {instance_id}")
continue
try:
# Save current EC2 settings to DynamoDB
save_ec2_settings(ec2_client, instance_id)
if simulate:
logger.info(f"Simulation mode: EC2 instance {instance_id} would be stopped.")
continue
# Stop the EC2 instance
logger.info(f"Stopping EC2 instance: {instance_id}")
ec2_client.stop_instances(InstanceIds=[instance_id])
logger.info(f"EC2 instance {instance_id} stopped.")
except ec2_client.exceptions.ClientError as e:
logger.error(f"Failed to stop EC2 instance {instance_id}: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error("Access denied. Ensure the IAM role has the following permissions: AmazonEC2FullAccess.")
raise
def save_lambda_settings(lambda_client: BaseClient, function_name: str):
"""
Save the current settings of a Lambda function to DynamoDB.
Args:
lambda_client (BaseClient): The Lambda client.
function_name (str): The name of the Lambda function.
Raises:
Exception: If an error occurs while retrieving or saving the settings.
"""
logger.info(f"Saving settings for Lambda '{function_name}'")
assert isinstance(
lambda_client, BaseClient
), f"lambda_client must be a boto3 client instance, not {type(lambda_client)}"
assert (
isinstance(function_name, str) and function_name
), f"function_name must be a non-empty string, not {type(function_name)}"
try:
# Get current concurrency setting
concurrency_response = lambda_client.get_function_concurrency(FunctionName=function_name)
concurrency = concurrency_response.get("ReservedConcurrentExecutions", None)
# Get current permissions
permissions_response = lambda_client.get_policy(FunctionName=function_name)
permissions = json.loads(permissions_response["Policy"])["Statement"]
# Save settings to DynamoDB
save_to_dynamodb(function_name, {"Concurrency": concurrency, "Permissions": permissions})
except lambda_client.exceptions.ResourceNotFoundException:
logger.info(f"No existing settings for Lambda function: {function_name}")
except lambda_client.exceptions.ClientError as e:
logger.error(f"Failed to retrieve settings for Lambda function {function_name}: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error("Access denied. Ensure the IAM role has the following permission: AWSLambda_FullAccess.")
raise
def save_ec2_settings(ec2_client: BaseClient, instance_id: str):
"""
Save the current settings of an EC2 instance to DynamoDB.
Args:
ec2_client (BaseClient): The EC2 client.
instance_id (str): The ID of the EC2 instance.
Raises:
Exception: If an error occurs while retrieving or saving the settings.
"""
logger.info(f"Saving settings for EC2 instance {instance_id}")
assert isinstance(ec2_client, BaseClient), f"ec2_client must be a boto3 client instance, not {type(ec2_client)}"
assert (
isinstance(instance_id, str) and instance_id
), f"instance_id must be a non-empty string, not {type(instance_id)}"
try:
# Get current instance details
response = ec2_client.describe_instances(InstanceIds=[instance_id])
instance = response["Reservations"][0]["Instances"][0]
instance_settings = {
"InstanceType": instance.get("InstanceType"),
"KeyName": instance.get("KeyName"),
"State": instance.get("State", {}).get("Name"),
"PreviousState": instance.get("State", {}).get("Name"),
}
# Save settings to DynamoDB
save_to_dynamodb(instance_id, instance_settings)
except ec2_client.exceptions.ClientError as e:
logger.error(f"Failed to retrieve settings for EC2 instance {instance_id}: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error("Access denied. Ensure the IAM role has the following permissions: AmazonEC2FullAccess.")
raise
def save_to_dynamodb(resource_id: str, settings: dict):
"""
Save settings to DynamoDB and verify the saved
data.
Args:
resource_id (str): The unique identifier for the resource.
settings (dict): The settings to save.
Raises:
Exception: If an error occurs while saving to DynamoDB or the saved data doesn't match.
"""
logger.info(f"Saving settings for {resource_id} to DynamoDB")
assert (
isinstance(resource_id, str) and resource_id
), f"resource_id must be a non-empty string, not {type(resource_id)}"
assert isinstance(settings, dict), f"settings must be a dictionary, not {type(settings)}"
try:
table.put_item(Item={"ResourceID": resource_id, "Settings": settings})
logger.info(f"Settings for {resource_id} saved")
# Verify the saved data
response = table.get_item(Key={"ResourceID": resource_id})
if "Item" not in response or response["Item"]["Settings"] != settings:
raise Exception(f"Verification failed: Data for {resource_id} does not match.")
logger.info(f'Verified settings for {resource_id}: {response["Item"]}')
except dynamodb.meta.client.exceptions.ClientError as e:
logger.error(f"Failed to save settings to DynamoDB for {resource_id}: {e}")
if e.response["Error"]["Code"] == "AccessDeniedException":
logger.error("Access denied. Ensure the IAM role has the following permissions: AmazonDynamoDBFullAccess.")
raise
except Exception as e:
logger.error(f"Error verifying saved data for {resource_id}: {e}")
raise
```
#### Environment Variables
* `API_GATEWAY_ID`: The ID of the API Gateway whose stages are to be disabled.
* `SIMULATE`: When set to `true`, the lambda will simulate actions without making actual changes.
* `DISABLE_ALL_LAMBDAS`: When set to `true`, all Lambda functions will be disabled, except those in the blacklist.
* `LAMBDAS_TO_DISABLE`: A comma-separated list of specific Lambda function names to disable.
* `LAMBDAS_TO_NOT_DISABLE`: A comma-separated list of Lambda function names that should not be disabled.
* `DISABLE_ALL_EC2_INSTANCES`: When set to `true`, all EC2 instances will be disabled, except those in the blacklist.
* `EC2_TO_DISABLE`: A comma-separated list of specific EC2 instance IDs to disable.
* `EC2_TO_NOT_DISABLE`: A comma-separated list of EC2 instance IDs that should not be disabled.
* `BLACKLISTED_LAMBDAS`: A comma-separated list of Lambda function names that should not be disabled.
* `BLACKLISTED_EC2_INSTANCES`: A comma-separated list of EC2 instance IDs that should not be disabled.
#### Step 2: Give the Lambda function full access in IAM
See [General setup](#setup)
#### Step 3: Blacklist the restore Lambda
Don't forget to add the restore lambda name in the `BLACKLISTED_LAMBDA_FUNCTIONS`, otherwise it will be killed as well.
### Step 4: Set Up SNS to Trigger the Lambda Function
1. Find the SNS topic you created in the [Billing Alarm](#budget) stage, in the [SNS console](https://us-east-1.console.aws.amazon.com/sns/).
2. Subscribe the Lambda Function to the SNS Topic:
* Add a subscription to the SNS topic.
* Choose the protocol as "AWS Lambda" and select your Lambda function.
## Closing Thoughts <a name="closing"></a>
Here you go! By following these steps, you can ensure that your AWS API Gateway and Lambda functions are disabled when you reach a specific budget threshold, preventing further costs and limiting the possible cost overrun. This ensures that your services are only disabled when the budget is reached and are automatically restored at the beginning of the next period, keeping cost in check by killing your product when you spent too much on it. 💰💤 | kodsama |
1,908,747 | Orthodontic Aligner Retainer Sheets Market Size Analysis and Forecasted Expansion Through 2032 | Orthodontic Aligner Retainer Sheets Market 2024 Report: Providing Insights into Historical and... | 0 | 2024-07-02T10:36:13 | https://dev.to/ayanroot/orthodontic-aligner-retainer-sheets-market-size-analysis-and-forecasted-expansion-through-2032-45di | Orthodontic Aligner Retainer Sheets Market 2024 Report: Providing Insights into Historical and Current Market Scenarios Alongside Strategic Initiatives.
Global "Orthodontic Aligner Retainer Sheets Market" report has observed consistent and strong growth from 2024 to 2032, with projections indicating sustained positive momentum until 2032. Growing consumer demand for eco-friendly and sustainable items is a notable trend in the Orthodontic Aligner Retainer Sheets Market. In the Orthodontic Aligner Retainer Sheets Market, there has also been a discernible increase in the use of technology to enhance product efficiency and quality.
➼ Market Size:
The Orthodontic Aligner Retainer Sheets Market has witnessed growth from US$ Million to US$ Million from 2017 to 2023. With the CAGR, this market is estimated to reach US$ million in 2032. | Report which offers Customer Preferences and Buying Behaviors in-depth study Grounded on Types (Cloud Based, Web Based, Others) and expected to grow annually by magnificent (CAGR 2024 - 2032)
➼ Key Players:
List of Orthodontic Aligner Retainer Sheets Market PLAYERS PROFILED
The Orthodontic Aligner Retainer Sheets Market includes several key players such as SmartDeploy (U.S.),Macrium (U.K.),Symantec (U.S.),KACE (U.S.),Clonezilla (U.S.),ManageEngine (U.S.),Acronis (U.S.),Ivanti (U.S.) play crucial roles in this market.
Orthodontic Aligner Retainer Sheets Market Report Contains 2024: -
Complete overview of the global Orthodontic Aligner Retainer Sheets Market
Top Country data and analysis for United States, Canada, Mexico, Germany, France, United Kingdom, Russia, Italy, China, Japan, Korea, India, Southeast Asia, Australia, Brazil and Saudi Arabia, etc. It also throws light on the progress of key regional Orthodontic Aligner Retainer Sheets Markets such as North America, Europe, Asia-Pacific, South America and Middle East and Africa.
Description and analysis of Orthodontic Aligner Retainer Sheets Market potentials by type, Deep Dive, disruption, application capacity, end use industry
impact evaluation of most important drivers and restraints, and dynamics of the global Orthodontic Aligner Retainer Sheets Market and current trends in the enterprise
Key Benefits of This Market Research:
The study covers a comprehensive analysis of industry drivers, restraints, and opportunities, providing a neutral perspective on the market performance. It highlights recent industry trends and developments, offering insights into the competitive landscape and the strategies employed by key players. The study identifies potential and niche segments and regions exhibiting promising growth, supported by historical, current, and projected market size data in terms of value. An in-depth analysis of the Orthodontic Aligner Retainer Sheets Market is included, along with an overview of the regional outlook. This holistic approach ensures a thorough understanding of the market dynamics and potential growth areas.
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Global Orthodontic Aligner Retainer Sheets Market: SEGMENTATION ANALYSIS
The research report includes specific segments by region (country), manufacturers, Type, and Application. Market segmentation creates subsets of a market based on product type, end-user or application, Geographic, and other factors. By understanding the market segments, the decision-maker can leverage this targeting in product, sales, and marketing strategies. Market segments can power your product development cycles by informing how you create product offerings for different segments.
➼ PRODUCTS/SERVICES:
Valuable Points from Orthodontic Aligner Retainer Sheets Market Research Report 2024-2032:
The dynamics of the industry have changed significantly in the recent past due to a number of variables, including changes in customer tastes, regulations, and technological improvements. New product releases, mergers and acquisitions, and creative tactics by major companies are examples of recent industry advancements. Taking into account both previous and present data, a thorough background research offers a comprehensive value of the parental Orthodontic Aligner Retainer Sheets Market. The Orthodontic Aligner Retainer Sheets Market size has been evaluated from several angles, such as value and volume, offering information about its past expansion, present situation, and anticipated future growth. The Orthodontic Aligner Retainer Sheets Market is segmented based on the key regions, which highlights the variations in market dynamics between different regions. In order to have a better understanding of the competitive landscape, the shares and strategies of major manufacturers have also been assessed. Within the Orthodontic Aligner Retainer Sheets Market, emerging niches and geographical areas have been recognized as possible growth prospects. A thorough evaluation of the market's trajectory has been carried out, taking into account a number of influential variables. Recommendations have been made to leading companies to strengthen their position in the market based on these analyses. These suggestions cover methods for expanding into new markets, mitigating risks, and seizing opportunities when they arise.
Browse Report Details
About Us:
Market is changing rapidly with the ongoing expansion of the industry. Advancement in the technology has provided todays businesses with multifaceted advantages resulting in daily economic shifts. Thus, it is very important for a company to comprehend the patterns of the market movements in order to strategize better. An efficient strategy offers the companies with a head start in planning and an edge over the competitors. www.globalmarketstatistics.com insights is the credible source for gaining the market reports that will provide you with the lead your business needs.
| ayanroot | |
1,908,746 | HNG, MOBILE PLATFORMS AND ARCHITECTURES | Commencing this internship marks a noteworthy turning point in my professional journey. It is... | 0 | 2024-07-02T10:35:49 | https://dev.to/muhammed_owoyale_65b165d9/hng-mobile-platforms-and-architectures-2276 |
Commencing this internship marks a noteworthy turning point in my professional journey. It is priceless to have the chance to develop and learn alongside a group of people who share your values. My goals in this program are to improve my abilities, create strong applications, and work on important projects.
**MOBILE PLATFORMS**
Mobile development is the process of designing, building applications that run on mobile phones and this involves using certain programming languages and frameworks for creating those apps. Before learning mobile development, one needs to take consideration on what platform you are targeting.
There are various mobile development platforms, but the main platforms are IOS, ANDROID AND CROSS PLATFORM development. Each platform have unique features and targets a certain audience.
**IOS**
IOS is Apple’s mobile operating system, it is the operating system in which devices like iPhones, iPads, and iPods run on. IOS app development involves using Apple’s tools to develop applications particularly for these devices that run on the operating system.
UIkit and Swift UI are frameworks for creating IOS interfaces. UIKit makes use of code to create iOS interfaces while SwiftUI, facilitates declarative UI programming for creating interactive and responsive designs. IOS platform is known for its enhanced security, data privacy, and good user experience as a result of having the best user interface. Due to its robust security features, development of apps require learning of either objective-c or swift and getting familiar with Xcode. App releases may occasionally be delayed due to Apple’s stringent approval procedures and those apps are limited to only Apple’s hardware.
**ANDROID**
Android is a mobile operating system that is based on Linux kernel. It is an open source software designed for touch screen mobile devices such as smartphones and tablets. It is currently owned by Google. For Android development, java is the traditional language for writing apps, but most recently, kotlin has been the preferred language for building android applications due to its modern features. Android studio is the preferred IDE for building android applications, it provides an environment for writing, testing and debugging android apps. Android has been the best-selling OS worldwide on smartphones, it has a very large user base. Although, due to the fact that it is open source, it is prone to security threats. Also, the variety of screen sizes and resolutions can make UI design and consistency more difficult.
**CROSS PLATFORM**
It involves the development of applications that can run on multiple platforms, either Android or IOS. There are various frameworks that can be used for cross platform development; Flutter is one of them which uses dart as the programming language for writing apps, it offers a wide range of pre-made widgets to help create natively built applications. Others include, React Native: Created by Facebook, this framework enables programmers to create mobile applications with native components by utilising JavaScript and React.
Codes can be reused across platforms, removing the need for separate development teams for iOS and Android. It is fast to develop, since it requires one codebase and development tools. Although some platform-specific features may be difficult to implement or may require custom native code, It can be difficult to debug because cross-platform apps have an extra layer of abstraction.
**SOFTWARE ARCHITECTURE PATTERNS**
**MVC(Model view Controller)**
It is a paradigm for architecture or design that divides an application into three primary logical parts. View, Model, and Control. Each of these parts is designed to manage particular application development tasks. The controller contains the logic, whereas the model houses the data and the view houses the user interface.
**Pros**
- Easy to maintain
- Easy to understand and implement
- Enhances more flexibility and higher testability
**Cons**
- It increases complexity of code
- Tight coupling between parts may cause issues.
**MVP(Model view Presenter)**
In this design pattern, the logic and interactions with the view and model are handled by the presenter. While the model manages data, the view renders user interface elements.
**Pros**
- Better separation of concerns compared to MVC.
- Easy to test
- More clean and maintainable codebase.
**Cons**
- Has more level of complexity
- High risks and difficult to understand
**MVVM (Model-View-ViewModel)**
The three primary parts of the MVVM architecture pattern are Model, View, and ViewModel. The Model, commonly referred to as the domain model, depicts the application’s data. It is a representation of your business domain that is object-oriented. The View is in charge of showing the user the data from the model.
**Pros**
- Maintains a clear division between the user interface (UI) and the business and presentation logic of an application.
- Easy to test and maintain
**Cons**
- High complexity
- Sometimes difficult to debug due to data binding
**Conclusion**
Mobile development is always changing. Comprehending diverse platforms and architectural patterns is vital for developing efficacious applications. Starting a mobile app development project involves careful preparation, strategic research, and a clear grasp of your company’s objectives.Finding your preferences and organizational demands is crucial as you consider your options.
https://hng.tech/internship
https://hng.tech/hire | muhammed_owoyale_65b165d9 | |
1,873,281 | Building a universal React app with Expo, NextJS & Nativewind | Introduction Building universal React applications has never been easier or more... | 0 | 2024-07-02T10:34:56 | https://dev.to/adebayoileri/building-a-universal-react-app-with-expo-nextjs-nativewind-3829 | react, javascript, mobile, webdev | ## Introduction
Building universal React applications has never been easier or more efficient, thanks to Expo. Expo is a powerful toolchain that simplifies the development process, allowing developers to create high-quality, performant apps for iOS, Android, and the web with a single codebase.
With this guide, we will set up a monorepo from scratch to build a Universal React app using Expo and Next.js using tools like NativeWind/Tailwind, Turborepo for building apps across both mobile and web platforms.
## Problem
At my job, I was assigned the task of building a design system for both our mobile and web products. Given my background as a React developer, React Native was the natural choice for mobile development.
The challenge was to create a shared component library with consistent styling that works seamlessly across both mobile and web applications using React and React Native.
The goal was to develop a solution that supports the development of both mobile and web applications without duplicating components, rewriting business logic, or maintaining separate codebases.
Before we get started, let's familiarise ourselves with some key terminologies.
**Universal** in this case means it works on all platforms i.e Andriod, IOS, Web and others.
#### [Expo](https://docs.expo.dev/get-started/introduction/)
> Expo is a framework that makes developing Android and iOS apps easier
#### [Next.js](https://nextjs.org/docs)
> Next.js is a React framework for building full-stack web applications.
#### [React Native for Web](https://necolas.github.io/react-native-web)
> Makes it possible to run React Native components and APIs on the web using React DOM.
### Prerequisites
- Node.js (`>=18`)
- Yarn (`v1.22.19`)
- Native Development Environment (Xcode, Android Studio e.t.c)
### Setup yarn workspaces
We need to initialise our project with a package.json file
```bash
yarn init
```
Using Classic yarn as [Expo documentation](https://docs.expo.dev/guides/monorepos/) recommends it.
> We currently have first-class support for Yarn 1 (Classic) workspaces. If you want to use another tool, make sure you know how to configure it.
```bash
yarn set version 1.22.19
```
Set private flag as true
```diff
+ "private": true
```
> Note that the private: true is required, Workspaces are not meant to be published.
Create sub folders `apps` and `packages`
```json
"workspaces": [
"apps/*",
"packages/*"
],
```
**packages/*** simply means we'll reference all packages from a single directive
*apps* contains
- web
- native
*packages* contains
- ui
- utils e.t.c
### Install Turborepo
`turbo` is built on top of Workspaces, a feature of package managers in the JavaScript ecosystem that allows you to group multiple packages in one repository.
```bash
yarn add turbo --dev
```
Add `turbo.json` file
```json
{
"$schema": "https://turbo.build/schema.json",
"tasks": {
"build": {
"outputs": ["dist/**", ".next/**", "!.next/cache/**"],
"dependsOn": ["^build"]
},
"dev": {
"cache": false,
"persistent": true
},
"lint": {},
"clean": {
"cache": false
}
}
}
```
Update `.gitignore` file
```diff
+ .turbo
```
Setup Default Typescript config in the root workspace
```json
{
"compilerOptions": {
"strictNullChecks": true,
"noUncheckedIndexedAccess": true,
"baseUrl": "./packages",
"paths": {
"ui/*": ["./packages/ui/*"]
},
"jsx": "react-jsx"
},
"extends": "expo/tsconfig.base"
}
```
## Setting up Packages
Create new shared packages for the monorepo in `packages` folder containing
`ui`
`app`
cd into `packages/ui`
run
```bash
yarn init -y
```
Next, create an empty `index.ts` in **packages/ui** file for now
## Structure of Monorepo
```bash
universal-app-starter
└── apps
├── native
└── web
└── packages
├── ui
└── app
```
### Setup default `apps` for native and web with Expo & Next.js
Navigate to the apps directory
```bash
cd apps
```
## Setting up Nextjs app
Run
```bash
npx create-next-app@latest
```
Update tsconfig.json to include
```json
"extends": "../../tsconfig.json",
```
```bash
cd apps/web
yarn run dev
```
## Using Expo
```bash
npx create-expo-app@latest
```
You'll be prompted to enter your app name. Set your app name as `native` and run the command to reset it as fresh project
```bash
yarn run reset-project
```
Optionally, you could delete the boilerplate files and folders generated from `create-expo-app`
- /app-example.
- components
- hooks
- constants
- scripts
replace tsconfig.json in the `native` folder
```json
{
"extends": "../../tsconfig.json",
"include": [
"**/*.ts",
"**/*.tsx",
".expo/types/**/*.ts",
"expo-env.d.ts"
]
}
```
Ensure you have `expo-env.d.ts` file
```ts
/// <reference types="expo/types" />
// NOTE: This file should not be edited and should be in your git ignore
```
To run your project, navigate to the directory and run one of the following commands.
```bash
cd native
```
```bash
- yarn run android
- yarn run ios
- yarn run web
```
### Setting Up React Native Web in Next.js app
In the root directory, add resolutions to package.json file
```json
"resolutions": {
"react": "18.2.0",
"react-native": "0.74.2",
"react-native-web": "~0.19.10",
"tailwindcss": "^3.4.1"
}
```
In **apps/web**
Run
```bash
yarn add react-native-web @expo/next-adapter
```
### Updating Next.js Configuration
Edit **next.config.js**
```ts
/** @type {import('next').NextConfig} */
const { withExpo } = require("@expo/next-adapter");
module.exports = withExpo({
reactStrictMode: true,
transpilePackages: [
// NOTE: you need to list `react-native` because `react-native-web` is aliased to `react-native`.
"react-native",
"react-native-web",
"ui"
// Add other packages that need transpiling
],
webpack: (config) => {
config.resolve.alias = {
...(config.resolve.alias || {}),
// Transform all direct `react-native` imports to `react-native-web`
"react-native$": "react-native-web",
"react-native/Libraries/Image/AssetRegistry":
"react-native-web/dist/cjs/modules/AssetRegistry" // Fix for loading images in web builds with Expo-Image
};
config.resolve.extensions = [
".web.js",
".web.jsx",
".web.ts",
".web.tsx",
...config.resolve.extensions
];
return config;
}
});
```
### Resetting React Native Web styles
The package `react-native-web` builds on the assumption of reset CSS styles, here's how you reset styles in Next.js
Add to `globals.css`
```css
html, body, #__next {
width: 100%;
-webkit-overflow-scrolling: touch;
margin: 0px;
padding: 0px;
min-height: 100%;
}
#__next {
flex-shrink: 0;
flex-basis: auto;
flex-direction: column;
flex-grow: 1;
display: flex;
flex: 1;
}
html {
-webkit-text-size-adjust: 100%;
height: 100%;
}
body {
display: flex;
overflow-y: auto;
overscroll-behavior-y: none;
text-rendering: optimizeLegibility;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
-ms-overflow-style: scrollbar;
}
```
### Creating first shared component
Now we have RNW(React Native Web), Let's write our first shared component.
Create a file `view/index.tsx` and in the `ui` package
```jsx
import { View as ReactNativeView } from 'react-native'
export const View = ReactNativeView;
```
Update the `packages/ui/index.ts`
Add
```ts
export {};
```
### Using *ui* package
Add `ui` package in both native and web dependencies in package.json file
```json
....
"ui" : "*",
....
```
Replace `apps/native/index.tsx` in Expo app
```jsx
import { Text } from "react-native";
import { View } from "ui/view";
export default function Index() {
return (
<View
style={{
flex: 1,
justifyContent: "center",
alignItems: "center",
}}
>
<Text>Edit app/index.tsx to edit this screen.</Text>
</View>
);
}
```
Replace `apps/web/index.tsx` in Next.js app
```jsx
"use client";
import { View } from "ui/view";
export default function Home() {
return (
<View
style={{
flex: 1,
justifyContent: "center",
alignItems: "center",
}}
>
<p>
Get started by editing
<code className="font-mono font-bold">app/page.tsx</code>
</p>
</View>
);
}
```
### Configuring Metro bundler
To configure a monorepo with Metro manually, there are two main changes:
Wee need to make sure Metro is watching all relevant code within the monorepo, not just `apps/native`.
```
cd apps/native
npx expo customize metro.config.js
```
Update *metro.config.js*
```js
// Learn more https://docs.expo.io/guides/customizing-metro
const { getDefaultConfig } = require("expo/metro-config");
const path = require("path");
const workspaceRoot = path.resolve(__dirname, "../..");
const projectRoot = __dirname;
const config = getDefaultConfig(projectRoot);
config.watchFolders = [workspaceRoot];
config.resolver.nodeModulesPaths = [
path.resolve(projectRoot, "node_modules"),
path.resolve(workspaceRoot, "node_modules")
];
config.resolver.disableHierarchicalLookup = true;
module.exports = config;
```
### Update default entry point for Expo app
Update main field in package.json in `apps/native`
```diff
- "main": "expo-router/entry",
+ "main": "index.js",
```
```js
import { registerRootComponent } from "expo";
import { ExpoRoot } from "expo-router";
// Must be exported or Fast Refresh won't update the context
export function App() {
const ctx = require.context("./app");
return <ExpoRoot context={ctx} />;
}
registerRootComponent(App);
```
Now, we have a working native and web app using shared component with RNW
## Results
### Universal Styling with NativeWind
Next, we want to further and style both platform using Tailwind in Next.js and on mobile, NativeWind is the right tool to achieve.
[NativeWind](https://www.nativewind.dev/v4/overview) allows you to use Tailwind CSS to style your components in React Native. Styled components can be shared between all React Native platforms.
```bash
cd apps/native
npx expo install nativewind@^4.0.1 react-native-reanimated tailwindcss
```
Run `pod-install` to install Reanimated pod:
```bash
npx pod-install
```
Run `npx tailwindcss init` to create a *tailwind.config.js* file
```bash
npx tailwindcss init
```
Add the paths to all of your component files in your tailwind.config.js file.
```js
/** @type {import('tailwindcss').Config} */
module.exports = {
content: [
+ "./index.js",
+ "./app/**/*.{js,jsx,ts,tsx}",
+ "../../packages/**/*.{js,ts,jsx,tsx}"
],
theme: {
extend: {},
},
plugins: [],
}
```
Create a CSS file `global.css` and add the Tailwind directives
```bash
cd apps/native
touch global.css
```
#### Copy & paste in `global.css` file
```css
@tailwind base;
@tailwind components;
@tailwind utilities;
```
#### Add babel preset
Configure babel to support NativeWind
```js
module.exports = function (api) {
api.cache(true);
return {
presets: [
["babel-preset-expo", { jsxImportSource: "nativewind" }],
"nativewind/babel",
],
};
};
```
### Modify Metro Config
```diff
+const { withNativeWind } = require('nativewind/metro');
...
-module.exports = config;
+module.exports = withNativeWind(config, { input: './global.css' })
```
### Import your CSS file
In the `app/layout.tsx` file
```tsx
import "../global.css";
....
```
### Typescript Support
NativeWind extends the React Native types via declaration merging. Add triple slash directive referencing the types. Add a file `app-env.d.ts` in `apps/native` root directory.
```ts
/// <reference types="nativewind/types" />
```
### Next.js Support
Update tailwind.config.js in `apps/web`
```js
import type { Config } from "tailwindcss";
const config: Config = {
content: [
"./pages/**/*.{js,ts,jsx,tsx,mdx}",
"./components/**/*.{js,ts,jsx,tsx,mdx}",
"./app/**/*.{js,ts,jsx,tsx,mdx}",
],
+ important: "html",
+ presets: [require('nativewind/preset')],
theme: {
extend: {
},
},
plugins: [],
};
export default config;
```
Update tsconfig.json file
```json
{
"compilerOptions": {
"jsxImportSource": "nativewind"
}
}
```
## Using Nativewind in shared UI
In `packages/ui`
Update the `view` component we created earlier
```tsx
import { View as ReactNativeView } from 'react-native'
+ import { cssInterop } from 'nativewind';
+ export const View = cssInterop(ReactNativeView, {
+ className: 'style',
+ });
```
Finally add `nativewind` to list of packages to transpile
```diff
transpilePackages: [
...,
+ "nativewind"
+ "react-native-css-interop"
]
```
Update the use of the `ui/view` component in both web and mobile app
```diff
import { Text } from "react-native";
import { View } from "ui/view";
export default function Index() {
return (
<View
+ className="flex-1 justify-center items-center"'
- style={{
- flex: 1,
- justifyContent: "center",
- alignItems: "center",
- }}>
...
```
Now, Using `className` works just same as with web.
## VSCode Intellisense Support
Create a new file `tailwind.config.ts` in the project root directory and paste the following in the file.
```ts
// Add file for tailwind intellisense. Leave this empty
module.exports = {};
```
## Troubleshooting
- [Troubleshooting NativeWind](https://www.nativewind.dev/v4/guides/troubleshooting)
- [NativeWind Next.js Common Issues](https://www.nativewind.dev/v4/getting-started/nextjs#common-issues)
if you're using typescript, confirm you have the reference to NativeWind types in `app-env.d.ts`
```ts
/// <reference types="nativewind/types" />
```
Happy to help with any issues, be sure to leave a comment if you need help or found this useful.
## Links
[Turborepo Monorepo Guide](https://turbo.build/repo/docs/crafting-your-repository/structuring-a-repository)
[Expo Documentation](https://docs.expo.dev/)
[NativeWind Setup Expo Router](https://www.nativewind.dev/v4/getting-started/expo-router)
## Closing
Next, you'll need to build your own or custom universal components. I'll recommend [React Native Reusables](https://rnr-docs.vercel.app/getting-started/introduction/) to get started with most basic components.
If you're interested in using an existing template, I've followed the steps from this guide to create a starter template on Github.
{% embed https://github.com/adebayoileri/universal-app-starter %}
[Universal App Starter](https://github.com/adebayoileri/universal-app-starter) | adebayoileri |
1,908,745 | مكتب استخراج موافقة زواج | يتميز مكتب استخراج تصريح زواج بخبرة واسعة في مجال استخراج تصاريح الزواج ويضم فريق من المهنيين ذوي... | 0 | 2024-07-02T10:34:01 | https://dev.to/gooda_rabeh_59cc20109e53d/mktb-stkhrj-mwfq-zwj-4561 | يتميز [مكتب استخراج تصريح زواج](https://mo3aqeb.com/services/show/4/%D9%85%D9%83%D8%AA%D8%A8_%D8%A7%D8%B3%D8%AA%D8%AE%D8%B1%D8%A7%D8%AC_%D8%AA%D8%B5%D8%B1%D9%8A%D8%AD_%D8%B2%D9%88%D8%A7%D8%AC_%D8%B3%D8%B9%D9%88%D8%AF%D9%8A_%D9%85%D9%86_%D8%A3%D8%AC%D9%86%D8%A8%D9%8A%D8%A9) بخبرة واسعة في مجال استخراج تصاريح الزواج ويضم فريق من المهنيين ذوي الكفاءة العالية والخبرة الواسعة يتمتع أعضاء الفريق بمهارات متميزة في متابعة وإنجاز كافة الإجراءات المتعلقة بتصاريح الزواج واستخراج التأشيرات والتجنيس يهدف المكتب إلى تحقيق أفضل النتائج الممكنة لعملائه من خلال تقديم خدمات عالية الجودة.
يعرف مكتبنا بتقديم خدمات تعقيب تصاريح الزواج والتأشيرات والتجنيس بطريقة ممتازة مستفيدا من معرفة الفريق العميقة بالإجراءات والمتطلبات القانونية نسعى دائما لضمان رضا العملاء من خلال تقديم خدمات موثوقة وبأسعار معقولة يتمحور عملنا حول تلبية احتياجات العملاء بأفضل شكل ممكن مما جعلنا نكتسب سمعة طيبة في هذا المجال.
خدمات مكتب استخراج تصريح زواج
يقدم مكتب استخراج تصريح زواج مجموعة متنوعة من الخدمات للمواطنين تساعدهم في تسهيل إجراءات الزواج من أجانب بالإضافة إلى العديد من الخدمات الأخرى ذات الصلة منها:
• يساعد المكتب المواطنين في الحصول على التصاريح اللازمة للزواج من أجنبيات أو من مقيمات في المملكة يتم هذا من خلال توفير الدعم الكامل في تعبئة النماذج المطلوبة، وتقديم المستندات اللازمة.
• يقدم المكتب خدمة استخراج التصاريح للأجانب الذين يرغبون في الزواج من مواطنات سعوديات يتضمن ذلك إرشادهم خلال الإجراءات المطلوبة.
• يمكن للمكتب مساعدة الأفراد في الحصول على الموافقات الرسمية اللازمة لإتمام الزواج من جهات الاختصاص يشمل هذا تقديم الطلبات ومتابعتها حتى الحصول على الموافقة النهائية.
• يسهل مكتب خدمات تعقيب على المواطنات السعوديات الحصول على الموافقات اللازمة للزواج من مقيمين يتم ذلك عبر توفير الاستشارات اللازمة.
مميزات معقب استخراج تصاريح زواج
يمتاز مكتب استخراج تصريح زواج بالعديد من الخصائص التي تجعله الخيار الأمثل للأفراد الراغبين في الحصول على تصاريح الزواج بسرعة وفعالية فيما يلي بعض من أهم مميزات المكتب:
• يتمتع المكتب بخبرة واسعة في مجال استخراج تصاريح الزواج وهو على دراية تامة بكافة القوانين والأنظمة المعمول بها. هذه المعرفة القانونية تضمن أن جميع الإجراءات تتم بشكل صحيح ومطابق للقوانين.
• يضم المكتب فريق من الخبراء والمحترفين الذين يتمتعون بمهارات عالية في متابعة وإنجاز كافة الإجراءات المتعلقة بتصاريح الزواج هؤلاء الخبراء متمرسون في التعامل مع مختلف الحالات ويعرفون كيفية تلبية احتياجات العملاء بأفضل صورة ممكنة.
• يعتمد مكتب استخراج تاشيرة عاملة منزلية وخدمات عامة على إجراءات فعالة وسريعة لضمان حصول العملاء على التصاريح المطلوبة في أسرع وقت ممكن يسعى فريق العمل إلى تبسيط الإجراءات وتقليل الوقت اللازم لإتمام المعاملات مما يتيح للعملاء الحصول على النتائج بسرعة ودون تأخير.
| gooda_rabeh_59cc20109e53d | |
1,908,744 | Join MathCruise for Exciting Vedic Maths Lessons for Kids | Explore Vedic maths for beginners and kids at MathCruise! Our courses are tailored to introduce... | 0 | 2024-07-02T10:31:43 | https://dev.to/tanmaygupta/join-mathcruise-for-exciting-vedic-maths-lessons-for-kids-47m9 | vedicmaths, vedicmathsforkids, vedicmathsclasses, vedicmathstricks | Explore Vedic maths for beginners and kids at MathCruise! Our courses are tailored to introduce foundational Vedic maths techniques in a fun and engaging way. Perfect for young learners and beginners alike, these classes focus on building strong math skills through interactive sessions. Join us at MathCruise to discover the wonders of **[Vedic maths classes](https://www.mathcruise.com/course/vedic-maths/)** today! | tanmaygupta |
1,908,670 | How to Make LLMs Better at Translation? | Introduction In this blog, we delve into the fascinating world of large language models... | 0 | 2024-07-02T10:30:23 | https://dev.to/novita_ai/how-to-make-llms-better-at-translation-28e8 | llm, translation | ## Introduction
In this blog, we delve into the fascinating world of large language models (LLMs) and their capabilities in performing translation tasks. Inspired by the academic paper titled "Adaptive Machine Translation with Large Language Models," we will explore the following questions:
- How do LLMs accomplish translation without any additional training or fine-tuning?
- What strategies can be employed to enhance their translation performance?
- How can we adopt these strategies to get our own LLM skilled at translation?
- What future directions hold promise for improving translation with LLMs?
If you are interested, just keep reading!
## How Do Large Language Models Do Translation Tasks?
### Pre-Training:
LLMs start with a phase called pre-training, where they are exposed to a vast amount of text data in multiple languages. This helps them learn patterns, grammar, vocabulary, and the relationships between words and phrases across languages.
### Understanding Context:
When given a sentence to translate, the LLM uses its understanding of context to interpret the meaning of the words and the overall sentence structure.
### Sequence Generation:
The model then generates a translation by predicting the most likely sequence of words in the target language that corresponds to the input sentence.
### Autoregressive Nature:
LLMs often use an autoregressive approach, where they predict the next word in the sequence based on the previously generated words. This continues until the model generates an end-of-sentence token or reaches a predefined length.
### Beam Search:
To improve the quality of translation, LLMs may use techniques like beam search, which expands multiple translation hypotheses simultaneously and selects the most probable one based on a scoring function.
### Handling Ambiguity:
LLMs are designed to handle ambiguity in language by choosing translations that are statistically more likely given the context, even if multiple translations are grammatically correct.
### Post-Processing:
After generating a translation, some models may apply post-processing steps to refine the output, such as correcting grammar, adjusting word order, or resolving any anomalies.
## How Can Large Language Models Do Translation Task Better?
The experiments in the paper "Adaptive Machine Translation with Large Language Models" were conducted using the GPT-3.5 textdavinci-003 model via its official API. The setup included various parameters like top-p 1, temperature adjustments, and token length multipliers for different languages. The context dataset TICO-19, with 3070 unique segments, was used to simulate domain-specific scenarios. The study involved five diverse language pairs: English-to-Arabic, English-to-Chinese, English-to-French, English-to-Kinyarwanda, and English-to-Spanish.
The paper explores several strategies to improve the performance of LLMs in translation tasks:
### Adaptive MT with Fuzzy Matches:
- Objective: To assess the capability of LLMs to adapt translations in real-time by leveraging context from similar, previously translated segments (fuzzy matches).
- Method: Utilized embedding similarity-based retrieval to extract fuzzy matches from a dataset and presented them alongside a new sentence to be translated.
- Example: If the new sentence to translate is "The quick brown fox jumps over the lazy dog," the system might retrieve similar sentences from the dataset and use them to influence the translation style.
### Comparison with Encoder-Decoder MT Models:
- Objective: To evaluate the translation quality of GPT-3.5 against established encoder-decoder models.
- Method: Compared translation outputs from GPT-3.5 with those from various APIs and models using the same source text.
- Example: For a given sentence in English, each model (GPT-3.5, DeepL, Google Cloud, etc.) would generate a translation in the target language, and the quality metrics (spBLEU, chrF++, etc.) would be compared.
### Incorporating Encoder-Decoder MT:
- Objective: To explore if combining the outputs of encoder-decoder models (e.g. DeepL) with the in-context learning of LLMs could enhance translation quality.
- Method: Appended the translation from an encoder-decoder model to the fuzzy matches used in the context prompt for GPT-3.5.
- Example: If the fuzzy matches and the new segment to be translated are provided to GPT-3.5, also include the translations from an encoder-decoder model for those segments to enrich the context.
### Bilingual Terminology Extraction:
- Objective: To automatically extract and utilize domain-specific terms to improve the consistency and accuracy of translations.
- Method: Trained GPT-3.5 to identify and extract key terms from sentence pairs and then use these terms to constrain translations.
- Example: Given a sentence pair containing medical terms, GPT-3.5 would extract terms like "influenza" and "vaccination" and ensure these terms are consistently used in the translation.
### Terminology-Constrained MT:
- Objective: To integrate domain-specific terminology into the translation process to improve adherence to specific styles and vocabularies.
- Method: Used a predefined glossary or extracted terms from fuzzy matches to constrain the translations.
- Example: For a sentence to be translated within a medical context, the system would use terms from a medical glossary, such as "malignant" or "benign," to ensure the translation uses the correct terminology.
## How Much Better Can Large Language Models Be At Translation?
### Adaptive MT with Fuzzy Matches:
The paper demonstrated that using fuzzy matches (previously translated segments with high similarity to the source text) as context significantly improved the translation quality of LLMs like GPT-3.5.
For example, in the English-to-Arabic (EN-AR) pair, using a single fuzzy match improved spBLEU scores from 27.6 (zero-shot) to 36.38. With two fuzzy matches, the score further increased to 38.41. Similar improvements were observed across other language pairs, showing the effectiveness of in-context learning with fuzzy matches.
### Comparison with Encoder-Decoder MT Models:
GPT-3.5's few-shot translation quality was compared with several encoder-decoder MT systems, including DeepL, Google Cloud Translation API, OPUS, and NLLB.
For high-resource languages, GPT-3.5 with 5 or 10 fuzzy matches outperformed conventional systems in certain language pairs. For instance, in English-to-Spanish (EN-ES), GPT-3.5 with 5-shot translation achieved a spBLEU score of 61.77, surpassing the scores of other systems.
### Incorporating Encoder-Decoder MT:
By appending the machine translation of the new segment from an encoder-decoder model to fuzzy matches, the paper observed substantial improvements in translation quality.
For instance, in English-to-Arabic, appending OPUS MT to 5 fuzzy matches improved the spBLEU score from 41.33 to 45.9.
### Bilingual Terminology Extraction:
GPT-3.5 was tasked with extracting 5 bilingual terms from each sentence pair in the context dataset. Human evaluation showed that the majority of terms (over 95%) extracted by GPT-3 for EN-AR, EN-ES, and EN-FR language pairs were accurate.
### Terminology-Constrained MT:
The paper found that integrating terms from a glossary into the translation process improved translation quality, especially in zero-shot scenarios. For example, in English-to-Arabic, zero-shot translation with glossary terms improved the spBLEU score from 27.6 to 35.38.
The human evaluation of terminology-constrained MT showed that the model successfully transferred glossary terms into the target more often than without terminology incorporation.
### ChatGPT Models, BLOOM and BLOOMZ Models:
The paper briefly compared GPT-3.5 with newer conversational models like GPT-3.5 Turbo and GPT-4. GPT-4 showed better zero-shot translation quality, while GPT-3.5 Turbo was more efficient but had comparable quality for few-shot translation.
When comparing GPT-3.5 with open-source multilingual models BLOOM and BLOOMZ, GPT-3.5 generally outperformed both for most language pairs, except for English-to-Arabic, where BLOOM showed comparable performance.
## How Do I Get an LLM Skilled in Translation?
Following the approaches presented by the author, here is a step-by-step for you!
### Step 1 Obtain Access to an LLM API:
- Sign up for an API key to access a large language model (LLM). [**Novita AI LLM API**](https://novita.ai/llm-api) provides developers with a lot of cost-effective LLM options, including Llama3–8b, Llama3–70b, Mythomax-13b, etc.
### Step 2 Prepare a Domain-Specific Translation Memory (TM):
- Collect a set of approved translation pairs (called "fuzzy matches") in your domain of interest.
- Structure the TM data with the source language sentence followed by the corresponding target language sentence.
### Step 3 Implement In-Context Learning for Translation:
- When you need to translate a new source sentence, construct a prompt for the LLM that includes: 1. The new source sentence in the original language that you want to translate; 2. The relevant "fuzzy match" translation pairs from your TM
- Arrange the prompt with the source and target language pairs in descending order of similarity to the new source sentence.
- Pass this prompt to the LLM's API and let it generate the translated output. The LLM will adapt its translation to match the style and terminology used in the TM.
### Step 4 Optimize the In-Context Learning:
- Experiment with the number of "fuzzy match" translation pairs to include in the prompt, aiming for 5–10 relevant pairs.
- Monitor the translation quality and make adjustments to the prompt format, number of examples, and other parameters to achieve the best results.
### Step 5 Combine with Encoder-Decoder MT Models:
- If available, incorporate the output of a strong encoder-decoder machine translation (MT) model into the prompt, along with the "fuzzy match" translation pairs.
- This can help further improve translation quality, especially for language pairs where the LLM alone may not yet match the performance of the encoder-decoder model.
### Step 6 Continuously Refine and Expand the TM:
- Update your TM with new approved translation pairs as you translate more content.
- Periodically review and curate the TM to ensure it remains relevant and accurate for your domain-specific needs.
You can find the exact codes for approaches mentioned in the paper (e.g. extracting the fuzzy matches) here: https://github.com/ymoslem/Adaptive-MT-LLM
## What Are the Future Directions for Translation With Large Language Models?
The paper "Adaptive Machine Translation with Large Language Models" suggests several future directions for translation with large language models (LLMs). Here are some key areas identified for further exploration and development:
### Dynamic Few-Shot Example Selection:
Instead of using a fixed number of fuzzy matches, the selection process could be dynamic, choosing only high-quality matches above a certain similarity score. This could potentially enhance the performance by providing more relevant context.
### Incorporating Glossary Terms or MT Outputs Based on Quality:
When integrating terms from a glossary or machine translation outputs from other systems, selecting those with specific quality characteristics could be beneficial. This selective integration could lead to better translation quality.
### Phrase-Based Terminology Extraction:
The paper suggests exploring the use of longer phrases instead of individual terms for terminology extraction. This could be particularly useful for low-resource languages where longer context may improve translation accuracy.
### Fine-Tuning for Low-Resource Languages and Rare Domains:
While the paper focuses on out-of-the-box performance, future work could involve fine-tuning the models for low-resource languages and specific domains. This could help in enhancing both the quality and efficiency of translations in these areas.
### Experimentation with Open-Source LLMs:
The authors propose expanding experiments with open-source LLMs like BLOOM and BLOOMZ to cover more aspects of translation tasks. This could provide insights into the performance of these models compared to proprietary models like GPT-3.5.
### Quality Estimation and Automatic Selection:
Developing automatic quality estimation methods to select the best translation from multiple alternatives could be a valuable area of research. This could involve comparing translations with and without the use of fuzzy matches and/or terminology.
### Improving Tokenization for Non-Latin Languages:
Addressing the tokenization issues for non-Latin languages, as noted with GPT-3.5 and Arabic, could be crucial for improving the performance of LLMs across more language pairs.
### Investigating Large-Scale Deployment and User Feedback Integration:
Research into how LLMs can be effectively deployed at scale in real-world translation scenarios, including the integration of user feedback to continuously improve translations.
### Exploring the Use of Multimodal Inputs:
Future research could look into the use of multimodal inputs (e.g., images, audio) alongside text to provide additional context for translation tasks, especially for tasks involving descriptive or technical content.
### Ethical Considerations and Bias Mitigation:
As with all AI applications, it will be important to study and address potential ethical concerns, including bias in translations, and develop methods to mitigate these issues.
### Robustness and Generalizability:
Ensuring that LLMs can generalize well across different domains and maintain robust performance even with limited data for certain language pairs.
## Conclusion
In conclusion, the journey to optimize large language models for translation tasks is multifaceted and dynamic. Reflecting on insights from "Adaptive Machine Translation with Large Language Models," we have explored diverse strategies and experiments that underscore the potential for significant improvements in translation quality. From leveraging in-context learning with fuzzy matches to integrating encoder-decoder models and domain-specific terminology extraction, the advancements discussed here pave the way for enhanced accuracy and efficiency in language translation.
Looking ahead, future research directions highlighted in the paper, such as dynamic example selection, multimodal inputs, and ethical considerations, offer promising avenues for further exploration. These endeavors aim not only to refine the technical capabilities of LLMs across various languages and domains but also to address broader societal implications and ensure equitable access to high-quality translation tools.
## References
Moslem, Y., Haque, R., Kelleher, J. D., & Way, A. (2023). Adaptive machine translation with large language models. arXiv. https://doi.org/10.48550/arXiv.2301.13294
> Originally published at [Novita AI](https://blogs.novita.ai/how-to-make-llms-better-at-translation/?utm_source=dev_llm&utm_medium=article&utm_campaign=translation)
> [Novita AI](https://novita.ai/?utm_source=dev_LLM&utm_medium=article&utm_campaign=how-to-make-llms-better-at-translation) is the all-in-one cloud platform that empowers your AI ambitions. With seamlessly integrated APIs, serverless computing, and GPU acceleration, we provide the cost-effective tools you need to rapidly build and scale your AI-driven business. Eliminate infrastructure headaches and get started for free - Novita AI makes your AI dreams a reality.
| novita_ai |
1,908,685 | How Can Least-to-Most Prompting Enable Complex Reasoning in LLMs? | Introduction What if language models could tackle complex problems with the same... | 0 | 2024-07-02T10:30:22 | https://dev.to/novita_ai/how-can-least-to-most-prompting-enable-complex-reasoning-in-llms-29k4 | llm, translation | ## Introduction
What if language models could tackle complex problems with the same step-by-step approach humans use? In the realm of large language models (LLMs), the strategy of Least-to-Most Prompting offers a promising solution. Referencing the paper "Least-To-Most Prompting Enables Complex Reasoning in Large Language Models," this blog explores how this innovative method enhances the reasoning capabilities of LLMs. By breaking down intricate tasks into manageable subproblems, Least-to-Most Prompting guides LLMs through a progressive sequence from simplicity to complexity.
## What is Least-to-Most Prompting?
Least-to-most prompting is an innovative strategy introduced in the paper "Least-To-Most Prompting Enables Complex Reasoning in Large Language Models" to enhance the reasoning capabilities of large language models (LLMs). This method is designed to help LLMs tackle complex problems by breaking them down into a series of simpler, more manageable subproblems. The process involves two main stages:
1. Decomposition: The complex problem is decomposed into a list of easier subproblems. This stage uses constant examples that demonstrate the decomposition process, followed by the specific question that needs to be broken down.
2. Subproblem Solving: The model is then prompted to solve these subproblems sequentially. Each subproblem's solution is facilitated by the answers to previously solved subproblems. This stage includes examples of how subproblems are solved, a list of previously answered subquestions and their solutions, and the next question to be addressed.
The prompts are constructed in a way that guides the model through a progressive sequence, from the simplest aspects of the problem to the most complex, hence the name "least-to-most."
## Why Do We Need Least-to-Most Prompting?
The need for least-to-most prompting arises from the limitations observed in existing prompting techniques, particularly chain-of-thought prompting.
Chain of thought prompting is an approach that encourages large language models to articulate their reasoning process step by step, similar to how a human would think through a problem. This method involves the model explicitly stating each logical step it takes to progress from understanding the question to reaching the final answer. By breaking down the problem into a series of intermediate reasoning steps, the model provides a transparent and justifiable solution path.
While chain-of-thought prompting has shown significant performance improvements for various natural language reasoning tasks, it tends to struggle when generalizing to solve problems that are more complex than the examples provided in the prompts.
## How Can Least-to-Most Prompting Enable Complex Reasoning in LLMs?
The experiment design in the paper "Least-to-Most Prompting Enables Complex Reasoning in Large Language Models" can be broken down into the following step-by-step process:
### Identify the Research Goal
The goal is to enable large language models to perform complex reasoning tasks that require solving problems more difficult than those demonstrated in the training examples.
### Select the Tasks
The researchers chose tasks that are representative of different types of reasoning, including symbolic manipulation, compositional generalization, and mathematical reasoning.
**Task 1: Symbolic Manipulation (Last-Letter Concatenation Task):**
- **Problem:** Given a list of words, the task is to output the concatenation of the last letters of each word in the list.
- **Example:** For the input "think, machine, learning," the correct output is "keg."
- **Least-to-Most Prompting:**
- Decompose the problem: Break down the list into sequential sublists ("think," "think, machine," "think, machine, learning").
- Solve subproblems: Concatenate the last letters of words in each sublist ("think" gives "k," "machine" gives "e," and "learning" gives "g").
- Combine solutions: Use the solutions to the subproblems to construct the final answer ("k" + "e" = "ke" and "ke" + "g" = "keg").
**Task 2: Compositional Generalization (SCAN Benchmark):**
- **Problem:** Map natural language commands to action sequences. The challenge is to generalize to longer action sequences than those seen during training.
- **Example:** The command "look opposite right thrice after walk" should be translated to the action sequence "TURN RIGHT, TURN RIGHT, LOOK, WALK."
- **Least-to-Most Prompting:**
- Decompose the command: Break down the complex command into simpler parts ("look opposite right thrice" and "walk").
- Map to actions: Translate each part into actions ("look opposite right thrice" becomes "TURN RIGHT, TURN RIGHT, LOOK" repeated thrice, and "walk" remains "WALK").
- Combine actions: Sequentially execute the actions to form the final sequence.
**Task 3: Mathematical Reasoning (GSM8K and DROP Datasets):**
- **Problem:** Solve math word problems that may require multiple steps of reasoning.
- **Example:** "Elsa has 5 apples. Anna has 2 more apples than Elsa. How many apples do they have together?"
- **Least-to-Most Prompting:**
- Decompose the problem: Identify the subproblems (How many apples does Anna have? How many apples do they have together?).
- Solve subproblems: Calculate Anna's apples (5 + 2 = 7) and then the total (5 + 7 = 12).
- Final answer: Conclude that Elsa and Anna have 12 apples together.
### Design the Prompting Strategies
Two main prompting strategies are compared:
- Chain-of-Thought Prompting: This involves providing the model with examples that demonstrate a step-by-step reasoning process to solve a problem.
- Least-to-Most Prompting: This novel strategy involves breaking down a complex problem into simpler subproblems and solving them sequentially, using the solutions to previous subproblems to facilitate the solution of the next.
### Create Prompt Examples
For each prompting strategy, the researchers crafted examples that demonstrate how to approach the tasks. For least-to-most prompting, this includes examples of both problem decomposition and subproblem solving.
### Implement the Prompting in the Model
The language model is then given these prompts as input. For least-to-most prompting, this involves two stages:
- Decomposition Stage: The model is asked to break down the original problem into a series of simpler subproblems.
- Subproblem Solving Stage: The model is then asked to solve these subproblems sequentially, using the answers from previous subproblems to inform the solution of the next.
### Construct the Test Sets
For each task, the researchers created test sets with varying levels of difficulty.
**Task 1: Symbolic Manipulation (Last-Letter Concatenation Task):**
- The test set for this task involved generating lists of words with varying lengths to test the model's ability to concatenate the last letters of each word in the list.
- The researchers used a list of the 10,000 most common English words from Wiktionary, excluding profane words, resulting in a list of 9,694 words.
- For each desired list size (ranging from 4 to 12 words), they generated 500 random sequences of these words. Each sequence served as an input, and the corresponding output was the sequence of last letters of the words.
**Task 2: Compositional Generalization (SCAN Benchmark):**
- The SCAN benchmark consists of natural language commands that need to be mapped to action sequences. The test set challenges the model to generalize from shorter to longer action sequences.
- The researchers used the existing splits of the SCAN dataset, particularly focusing on the length split, which contains action sequences longer than those in the training set.
- They also ensured that the test set covered a range of commands to evaluate the model's ability to handle different types of compositional generalization.
**Task 3: Mathematical Reasoning (GSM8K and DROP Datasets):**
- For mathematical reasoning, the researchers used word problems from the GSM8K dataset and the numerical reasoning subset of the DROP dataset.
- The test set included problems that required varying numbers of reasoning steps to solve, allowing the researchers to evaluate how well the model could generalize from simpler to more complex problems.
- The problems were selected to represent a range of difficulty levels and to ensure that some problems required more steps than those demonstrated in the prompts.
By constructing test sets in this manner, the researchers were able to rigorously evaluate the least-to-most prompting strategy and compare its effectiveness against standard prompting techniques across different reasoning tasks.
### Run Experiments and Collect Results
The researchers ran experiments using the GPT-3 model (specifically the code-davinci-002 version) with both prompting strategies. They recorded the accuracy of the model's responses on the test sets.
### Analyze the Results
The researchers compared the performance of the model using different prompting strategies. They looked at overall accuracy and also broke down the results by the number of reasoning steps required to solve the problems.
### Error Analysis
For least-to-most prompting, the researchers conducted a detailed error analysis to understand common mistakes, such as incorrect decomposition of problems or incorrect solving of subproblems.
## How Much Better Are LLMs' Performance With Least-To-Most Prompting?
The paper "Least-To-Most Prompting Enables Complex Reasoning in Large Language Models" demonstrates the effectiveness of least-to-most prompting across various tasks and compares its performance with chain-of-thought prompting and standard prompting methods. Here's a summary of the performance improvements for each task as detailed in the paper:
### Symbolic Manipulation (Last-Letter Concatenation Task):
The least-to-most prompting significantly outperformed chain-of-thought prompting, especially when the length of the word lists increased.
For lists with lengths ranging from 4 to 12 words, the accuracy of least-to-most prompting with the GPT-3 code-davinci-002 model ranged from 74.0% to 94.0%, which was substantially higher than the accuracy of chain-of-thought prompting, which ranged from 31.8% to 84.2%.
### Compositional Generalization (SCAN Benchmark):
Least-to-most prompting achieved an accuracy of 99.7% under the length split condition using only 14 exemplars, which is a remarkable result considering that specialized neural-symbolic models trained on the entire dataset of over 15,000 examples often struggle with this task.
In contrast, chain-of-thought prompting achieved only 16.2% accuracy with the same model on the length split condition.
### Mathematical Reasoning (GSM8K and DROP Datasets):
On the GSM8K dataset, least-to-most prompting slightly improved over chain-of-thought prompting, with an overall accuracy of 62.39% compared to 60.87% for chain-of-thought prompting.
However, for problems requiring at least 5 steps to solve, least-to-most prompting showed a significant improvement, with an accuracy of 45.23% compared to 39.07% for chain-of-thought prompting.
On the DROP dataset, least-to-most prompting outperformed chain-of-thought prompting by a large margin, with accuracies of 82.45% and 74.77% for non-football and football subsets, respectively, compared to 58.78% and 59.56% for chain-of-thought prompting.
These results indicate that least-to-most prompting is particularly effective in tasks that require the model to generalize from simpler examples to more complex problems. The strategy of breaking down complex problems into a series of simpler subproblems and solving them sequentially allows the model to achieve higher accuracy rates across different reasoning tasks.
## How to Integrate Least-To-Most Prompting to My Own LLM?
Based on the approaches presented by the authors of "Least-To-Most Prompting Enables Complex Reasoning in Large Language Models", we create this step-by-step guide for you:
### Step 1: Obtain an LLM API
First, you need to have access to an LLM that you can use for your task. [**Novita AI LLM API**](https://novita.ai/llm-api) provides developers with many cost-effective LLM options, including Llama3–8b, Llama3–70b, Mythomax-13b, etc.
Here's an example of making a Chat Completion API call with Novita AI LLM API:
```
from openai import OpenAI
client = OpenAI(
base_url="https://api.novita.ai/v3/openai",
# Get the Novita AI API Key by referring: https://novita.ai/get-started/Quick_Start.html#_3-create-an-api-key
api_key="<YOUR Novita AI API Key>",
)
model = "Nous-Hermes-2-Mixtral-8x7B-DPO"
stream = True # or False
max_tokens = 512
chat_completion_res = client.chat.completions.create(
model=model,
messages=[
{
"role": "system",
"content": "Act like you are a helpful assistant.",
},
{
"role": "user",
"content": "Hi there!",
}
],
stream=stream,
max_tokens=max_tokens,
)
if stream:
for chunk in chat_completion_res:
print(chunk.choices[0].delta.content or "", end="")
else:
print(chat_completion_res.choices[0].message.content)
```
### Step 2: Prepare the Prompt for Decomposition
Create a set of example prompts that demonstrate how to decompose a complex problem into a series of simpler subproblems. The examples should show the structure of the decomposition, but not necessarily the specific content of the subproblems.
### Step 3: Prepare the Prompt for Subproblem Solving
Create a set of example prompts that demonstrate how to solve the individual subproblems. These examples should show the process of building the solution step-by-step, using the results of previously solved subproblems.
### Step 4: Implement the Least-to-Most Prompting Algorithm
The key steps in the Least-to-Most Prompting algorithm are:
a. Pass the original problem to the decomposition prompt and obtain the list of subproblems.
b. For each subproblem, construct a prompt that includes the previous subproblem solutions (if any) and the current subproblem, and pass it to the LLM to obtain the solution.
c. Combine the solutions to the subproblems to obtain the final solution to the original problem.
### Step 5: Integrate with Your Application
Incorporate the Least-to-Most Prompting algorithm into your application's workflow. This may involve preprocessing the input, constructing the prompts, calling the LLM API, and postprocessing the outputs.
### Step 6: Evaluate and Iterate
Test your implementation on a variety of tasks and problem difficulties. Analyze the errors and refine your prompt design or the prompting algorithm as needed.
This is a high-level example created by LLM, and you may need to adapt it to your specific use case and LLM.
```
import openai
# Set the Novita AI API key
openai.api_key = "<YOUR Novita AI API Key>"
openai.base_url = "https://api.novita.ai/v3/openai"
def decomp_prompt(original_problem):
"""
Generates a prompt to decompose the original problem into a series of subproblems.
Args:
original_problem (str): The original problem to be decomposed.
Returns:
str: The prompt for decomposing the problem.
"""
return f"""
Please decompose the following problem into a series of subproblems that can be solved step-by-step:
{original_problem}
Subproblems:
{{{decomp_steps}}}
"""
def solve_prompt(prev_solutions, subproblem):
"""
Generates a prompt to solve a specific subproblem, given the previously solved subproblems.
Args:
prev_solutions (str): The previously solved subproblems.
subproblem (str): The subproblem to be solved.
Returns:
str: The prompt for solving the subproblem.
"""
return f"""
Given the following previously solved subproblems:
{prev_solutions}
Please solve the following subproblem:
{subproblem}
"""
def solve_problem(original_problem):
"""
Solves the original problem using the Least-to-Most Prompting algorithm.
Args:
original_problem (str): The original problem to be solved.
Returns:
list: A list of solutions for the subproblems.
"""
# Decompose the original problem into subproblems
decomp_result = openai.Completion.create(
engine="text-davinci-002",
prompt=decomp_prompt(original_problem),
max_tokens=1024,
n=1,
stop=None,
temperature=0.7,
)
decomp_steps = decomp_result.choices[0].text.strip()
# Solve the subproblems one by one
solutions = []
for step in decomp_steps.split("\n"):
step = step.strip()
if step:
solve_result = openai.Completion.create(
engine="text-davinci-002",
prompt=solve_prompt("\n".join(solutions), step),
max_tokens=1024,
n=1,
stop=None,
temperature=0.7,
)
solutions.append(solve_result.choices[0].text.strip())
return solutions
# Example usage
original_problem = "Solve a complex math problem step-by-step."
solutions = solve_problem(original_problem)
print("\n".join(solutions))
```
## What Are the Limitations of Least-To-Most Prompting?
### Domain-Specificity:
Decomposition prompts are often tailored to specific domains and may not generalize well across different types of problems. A prompt that works well for mathematical word problems may not be effective for common sense reasoning problems or those in other domains.
### Intra-Domain Generalization Challenge:
Even within the same domain, generalizing the decomposition process can be difficult. The prompts need to be carefully designed to demonstrate the correct decomposition for the model to achieve optimal performance.
### Complexity of Decomposition:
Some complex problems may require a sophisticated understanding of how to break them down into simpler subproblems. Designing prompts that effectively guide the model through this process can be challenging.
### Sequential Dependence:
The subproblems generated in least-to-most prompting are often dependent and need to be solved in a specific order. This sequential requirement can make the prompting process more complex compared to independent subproblems.
### Error Propagation:
If the model makes an error in the early stages of problem decomposition or subproblem solving, this error can propagate through the subsequent steps, leading to an incorrect final solution.
### Model-Specific Performance:
The performance of least-to-most prompting can vary between different models or versions of the same model. Some models may be better suited to handle the iterative and recursive nature of the task.
### Prompt Engineering:
The effectiveness of least-to-most prompting may rely heavily on the quality of prompt engineering. Creating effective prompts that lead to accurate decomposition and solution generation requires careful consideration and expertise.
### Scalability:
While least-to-most prompting can be effective, it may not scale as well to very large or highly complex problems due to the increased difficulty in designing appropriate prompts and the potential for error propagation.
### Lack of Bidirectional Interaction:
The authors suggest that prompting, in general, might not be the optimal method for teaching reasoning skills to LLMs because it is a unidirectional communication form. A more natural progression could involve evolving prompting into fully bidirectional conversations that allow for immediate feedback and more efficient learning.
## Conclusion
By decomposing complex problems into simpler steps and solving them sequentially, LLMs with Least-to-Most Prompting not only enhance their reasoning but also demonstrate remarkable performance across various tasks - from symbolic manipulation to compositional generalization and mathematical reasoning.
However, it's important to acknowledge the challenges that accompany this method. Domain-specificity, intra-domain generalization difficulties, and the complexity of decomposition can present hurdles. Moreover, the sequential dependence of subproblems and potential error propagation underscore the need for careful prompt engineering and model-specific considerations.
As we continue to explore new frontiers in AI development, Least-to-Most Prompting stands out as a pivotal strategy that empowers LLMs to navigate the challenges of complex reasoning tasks with unprecedented accuracy and efficiency, while also prompting ongoing research into optimizing its application across diverse problem domains.
## References
Zhou, D., Schärli, N., Hou, L., Wei, J., Scales, N., Wang, X., Schuurmans, D., Cui, C., Bousquet, O., & Chi, E. (2023). Least-to-Most Prompting Enables Complex Reasoning in Large Language Models. In _Proceedings of the International Conference on Learning Representations._
> Originally published at [Novita AI](https://blogs.novita.ai/how-can-least-to-most-prompting-enable-complex-reasoning-in-llms/?utm_source=dev_llm&utm_medium=article&utm_campaign=least)
> [Novita AI](https://novita.ai/?utm_source=dev_LLM&utm_medium=article&utm_campaign=how-can-least-to-most-prompting-enable-complex-reasoning-in-llms) is the all-in-one cloud platform that empowers your AI ambitions. With seamlessly integrated APIs, serverless computing, and GPU acceleration, we provide the cost-effective tools you need to rapidly build and scale your AI-driven business. Eliminate infrastructure headaches and get started for free - Novita AI makes your AI dreams a reality.
| novita_ai |
1,908,743 | Exploring Mobile Development Platforms and Software Architecture Patterns | Hi! Welcome to my first blog post! Today, we'll talk about mobile development platforms and the... | 0 | 2024-07-02T10:30:18 | https://dev.to/lkendi003/exploring-mobile-development-platforms-and-software-architecture-patterns-46ne | Hi! Welcome to my first blog post! Today, we'll talk about mobile development platforms and the software architecture patterns that power our favorite apps. If you, like me, are passionate about creating mobile apps, this post is for you. I just recently began my journey in the [HNG Internship](https://hng.tech/internship), mobile development track, and I'm excited to share my learnings along the way!
---
## Introduction
Smartphones - tiny devices packed with so many functionalities like chat, mail, calculators, cameras, and more. We use these devices every day, so we rarely marvel at how wonderful they are. Imagine telling someone in the 18th century that one day we’d be able to carry a camera, mailbox, calculator and even more within one device that fits into our pockets; they'd probably say that it was only possible in the movies. But here we are, with these incredible tools in our hands — tiny but very powerful. Pretty amazing, right?
_Chat, mail, camera, calculator, and more - smartphones provide all these in one pocket-sized device. Source: Copilot AI Image Generator_
So, who makes it possible for smartphones to have all of these features? That's where we, mobile developers, come in. We take those wild, sci-fi ideas and turn them into the apps you use every day. But just as building a house requires a good knowledge of the environment and materials, building mobile apps requires a good understanding of mobile development platforms. Each platform offers unique tools and capabilities that can affect the performance of apps, the user experience, and overall success. This makes understanding and choosing the right platform very crucial.
---
## Mobile Development Platforms (MDPs)
Mobile development platforms, or MDPs, are like toolkits that simplify building apps for smartphones and tablets. They hide the complexities of different operating systems (OS) while providing tools and frameworks that make it easier for developers to write code, fix errors, test, and deploy their apps.
There are three main categories of MDPs:
1. **Native MDPs:** They focus on one specific operating system (e.g. iOS or Android). For the selected OS, they provide high performance, seamless user experience and full access to device features and hardware. However, they require separate codebases for each OS, increasing development time and cost.
Examples:
| MDP | Operating System | Primary Programming Language(s) | Main IDE |
|---|---|---|---|
| iOS | iOS | Swift or Objective-C | Xcode |
| Android | Android | Java or Kotlin | Android Studio |
2. **Cross-Platform MDPs:** They focus on building an app once that can be deployed on multiple platforms (iOS and Android).This saves time and resources by using a single codebase, but may have limitations in accessing certain device features. Also, the app performance might not always match native apps.
Examples:
| MDP | Programming Language(s) |
|---|---|
| Flutter | Dart |
| React Native | Javascript and React |
| Xamarin | C# and .NET|
Choosing the right MDP depends on your project's needs. For higher performance and a fully native feel, native MDPs are ideal. However, if development speed and cross-platform compatibility are your biggest priorities, consider a cross-platform MDP.
### Mobile Software Architecture
Now that we know what MDPs are, let's move on to mobile software architecture.
In the context of mobile apps, software architecture refers to how the different parts of the app are organized and interact with each other. Just like an architect uses blueprints to define how the parts of a building fit together, mobile software architecture patterns define how the different functionalities of a mobile app work and interact. These patterns help to ensure the app is maintainable, scalable, and runs efficiently on the target mobile devices.
Here's a breakdown of some common mobile app architecture patterns:
**1. Layered Architecture**
This pattern involves grouping parts with related functionalities into distinct layers. The three main layers are:
- Presentation Layer: Handles what the user sees and interacts with, like buttons and text.
- Business Logic Layer: Takes care of the app logic, like calculations and processing user input.
- Data Layer: Connects the app to its data source, such as a database.
The layered architecture is easy to understand and maintain, and it works well for smaller apps. However, it can become very complex for large projects, potentially affecting app performance.
**2. MVC (Model-View-Controller)**
This pattern separates an app into three distinct parts:
- Model: Manages the app's data (e.g., storage and retrieval).
- View: What the user sees on the screen.
- Controller: Controls communication between the Model and the View.
This pattern is popular due to its clear separation of concerns, making the code easier to maintain. However, in complex apps, the Controller can become overloaded with tasks, making it difficult to manage and modify. This can lead to maintenance challenges down the line.
**3. MVP (Model-View-Presenter)**
Similar to MVC, but the Presenter acts as a mediator between the View and the Model. This improves code maintainability by separating the UI logic from the business logic handled by the Model. The Presenter takes user interactions from the View, updates the Model as needed, and instructs the View to update itself accordingly.
**4. MVVM (Model-View-ViewModel)**
MVVM is quite similar to MVC, but instead of the Controller used in MVC, it introduces a ViewModel that acts as a middleman between the Model and the View. This pattern improves code organization and makes complex apps easier to manage. However, this pattern has a steeper learning curve compared to the first two, and the introduction of a ViewModel means writing more code.
**5. Clean Architecture**
Clean architecture is a software design approach that prioritizes
Clean architecture is a software design approach that prioritizes:
- Loose Coupling: Independent modules with minimal reliance on each other, promoting flexibility and easier maintenance.
- Testability: Achieved through the separation of concerns, allowing you to test each part of the application in isolation.
- Scalability: Each part is independent, so new features can be added without affecting the existing codebase.
- Long-term maintainability.
It consists of the following components:
- Entities: Represent the core data of the application, independent of any framework or UI.
- Use Cases: Define the functionalities the app offers, independent of any presentation layer.
- Interface Adapters: Convert data from a format used by one layer to a format usable by another (e.g., from database to UI).
- Frameworks and Drivers: External libraries or tools used by the application.
Apart from the previously mentioned pros, the clean architecture offers great flexibility but has a
steeper learning curve compared to the other architectures.
---
## Conclusion
I hope this post has been useful in giving you an idea about Mobile Development Platforms and Software Architecture.
As I mentioned earlier, I just started out the mobile development track with the awesome [HNG Internship](https://hng.tech/internship). I'm eager to learn, grow, and build apps that make a difference. This internship offers a fast-paced, organized program to gain practical skills by working on real-world projects.(By the way, the internship is free, with a [premium](https://hng.tech/premium) option for extra perks!)
Get ready to join me on this journey! Whenever I get the chance, I'll be sharing my experiences and what I learn every step of the way.
### Additional Resources
- [Top 8 Mobile App Development Platforms] (https://www.geeksforgeeks.org/top-mobile-app-development-platforms/)
- [The mobile app architecture guide](https://decode.agency/article/mobile-app-architecture/)
- [Mobile App Architecture: A Comprehensive Guide for 2023] (https://www.intellectsoft.net/blog/mobile-app-architecture/)
| lkendi003 | |
1,908,741 | Tell me one of your startup Stories. | Hey Everybody 👋 it’s Antonio here, CEO & Founder at Litlyx. Everybody who is working... | 0 | 2024-07-02T10:26:31 | https://dev.to/litlyx/tell-me-one-of-your-startup-stories-40n5 | discuss | ## Hey Everybody 👋 it’s **Antonio** here, CEO & Founder at **[Litlyx](https://litlyx.com).**
Everybody who is working in this field has some fire inside that tells us to "keep pushing." I have felt this way for a long time.
I want to ask you all to share one of your startup/project stories here, in particular, what challenges you are facing right now or have faced that make you and your team the people you are today.
### Would you like to share? I will start in the first comment.
With love from Italy!
---
### Check out Litlyx & leave a **star** on our open-source [repo](https://github.com/Litlyx/litlyx) on GitHub if you like it!
---
| litlyx |
1,908,631 | SQL Course: Challanges | Alright, great job for coming this far. It’s time for some challenges to finalize our social media... | 27,924 | 2024-07-02T10:25:44 | https://dev.to/emanuelgustafzon/sql-course-challanges-3fa7 | sql, challenge | Alright, great job for coming this far. It’s time for some challenges to finalize our social media database.
## Challenges overview
1. Query all posts and order them based on number of likes.
2. Query a users followers profiles and the posts they have liked.
3. Add comments to the posts.
#### Here is the tables we have created so far and the inserted data.
```
CREATE TABLE Users
(
ID INTEGER PRIMARY KEY AUTOINCREMENT,
Username VARCHAR(255) UNIQUE NOT NULL,
Password VARCHAR(255) NOT NULL,
CHECK (LENGTH(Password) > 5)
);
-- one to one field user and profile
CREATE TABLE Profiles
(
UserID INTEGER NOT NULL PRIMARY KEY,
Img VARCHAR(1),
Bio TEXT,
FOREIGN KEY (UserID) REFERENCES Users(ID)
);
-- one to many field user and post
CREATE TABLE Posts
(
ID INTEGER PRIMARY KEY AUTOINCREMENT,
UserID INTEGER NOT NULL,
Title VARCHAR(255) NOT NULL,
Content TEXT NOT NULL,
FOREIGN KEY (UserID) REFERENCES Users(ID)
);
-- many to many field user likes posts
CREATE TABLE Likes
(
ID INTEGER PRIMARY KEY AUTOINCREMENT,
PostID INTEGER,
UserID INTEGER,
FOREIGN KEY (PostID) REFERENCES Posts(ID),
FOREIGN KEY (UserID) REFERENCES Users(ID)
);
-- many to many field user follows users
CREATE TABLE Follows
(
ID INTEGER PRIMARY KEY AUTOINCREMENT,
OwnerID INTEGER,
FollowingID INTEGER,
FOREIGN KEY (OwnerID) REFERENCES Users(ID),
FOREIGN KEY (FollowingID) REFERENCES Users(ID)
);
INSERT INTO Users (Username, Password) VALUES
('Ben', 'secret'),
('Jim', 'secret'),
('Luk', 'secret');
INSERT INTO Profiles (UserID, Img, BIO) VALUES
(1, '😎', 'I am a cool guy'), --Ben
(2, '🥳', 'I love party'), --Jim
(3, '🤠', 'I am a cowboy'); --Luk
INSERT INTO Posts (UserID, Title, Content) VALUES
(1, 'sql', 'sql content'),
(1, 'java', 'java content'),
(2, 'NLP', 'NLP Content'),
(2, 'rust', 'rust content');
INSERT INTO Likes (UserID, PostID) VALUES
(1, 1), -- Ben likes sql
(2, 1), -- Jim likes sql
(3, 1), -- Luk likes sql
(1, 2), -- Ben likes Java
(3, 3); -- Luk likes NLP
INSERT INTO Follows (OwnerID, FollowingID) VALUES
(1, 2), -- ben follow jim
(2, 1), -- jim folliw ben
(2, 3), -- jim follow luk
(3, 1), -- luk follow ben
(1, 3); -- ben follow luk
```
## Challenge 1
* Query all posts and order them after number of likes.
* The posts with the most likes should come first.
* The tricky part is to include posts that have 0 likes.
Tip: Use a right join.
Expected result:
A table of post title, post content and number of likes.
## Challenge 2
In this challenge you will get some starter code.
This code return all user profiles, Jim follows.
```
SELECT
followsUser.Username,
followsProfile.Img,
followsProfile.Bio
FROM Follows f
JOIN Users u ON f.OwnerID = u.ID
JOIN Users followsUser ON f.FollowingID = followsUser.ID
JOIN Profiles followsProfile ON followsProfile.UserID = followsUser.ID
WHERE u.Username = 'Jim';
```
Your challenge is to add on to this. So that it returns the profile and the posts the followed users have `liked`.
Expected result:
A table of, username, profile image, profile bio, the user’s post with title and content.
## Challenge 3
We want a feature where users can comment on posts.
Each comment is associated with one post and one user.
Share your solutions in comments. Thanks for reading and happy coding! | emanuelgustafzon |
1,908,739 | Advanced Guide to Write An Effective Bug Report | Bugs are an integral part of the development process. Along with the bugs you need to write a bug... | 0 | 2024-07-02T10:23:21 | https://dev.to/jamescantor38/advanced-guide-to-write-an-effective-bug-report-4j5n | bugreport, testgrid | Bugs are an integral part of the development process. Along with the bugs you need to write a bug report. So in this blog post, we are sharing some effective tips and tricks to write bug reports.
Bugs are bound to happen when you’re developing an application, and no matter how hard you try to avoid them, you’ll still encounter some glitches in your code at some point or another. You may be tempted to fix the bugs or ignore it altogether, but ignoring bugs will only make the problems worse over time and cost you even more time and effort in the long run.
You’ve been tasked with writing an effective bug report by your project manager, but you aren’t sure how to do it. Don’t worry, as you can become an expert in no time! Just follow these simple steps, and you’ll be able to write a good bug report that any developer will love.
## What is a Bug Report?
A bug report is a written record of bugs or defects in a software program that anyone can submit. A bug review, the meeting is a formal meeting where all the defects of the current sprint are discussed and prioritized.
The process of doing so is called bug triage. How to write a Bug Report in software testing: It’s important for testers to write clear bug reports because it helps developers understand what went wrong with their code. Below are some tips for writing useful bug reports:
- Be specific about what didn’t work as expected.
- Explain why it failed (the reason behind it).
- Include any steps that reproduce the issue (including screenshots or video recordings).
- Try to give other information that might be useful, such as screen resolution, browser version etc.
Bug reports should be well-structured and thoroughly detailed so that developers know exactly what needs to be fixed and get it done as quickly as possible. It helps prevent the release of software from being delayed and allows for faster time-to-market without compromising quality.
## Bug Reporting General Guidelines
Writing a good bug report requires you to be on top of your game and keep in mind what matters most to your company. Here are some general guidelines for writing useful bug reports:
- Do not create duplicates: search before filing!
- Always make sure to test the most recent available version.
- One bug per report.
- Provide helpful information, Not opinion or criticism.
- Mark security/privacy vulnerabilities as non-public.
## Elements of an Effective Bug Report
A bug report must be capable of answering these questions:
- What’s the problem?
- What can the developer do to reproduce the issue (to observe them)?
- What part of the software (which website or feature) is the issue originating from?
- What is the context (browser or device OS) in which the issue occurs?
In the process of determining how to write the bug report, begin by asking yourself what a bug report is supposed to communicate to the developer.
- A description of what went wrong (the problem)
- How to reproduce it (the steps)
- The expected result
- The actual result
- Blaming others for your mistakes.
- Try not to use inappropriate language or tone.
- Don’t try to include unnecessary information for fixing the problem.
## How To Write A Good Bug Report?
Here are some of our favourite tips and tricks on how to write a good bug report. We have compiled several easy tips to help you learn how to write bug reports in Excel. A valid bug report must include the following elements:
1. Title/Bug ID
2. Background information
3. Environment
4. Steps to Reproduce a Bug
5. Expected Result
6. Visual proof
7. Expected vs actual results
8. Bug severity
**1. Title/Bug ID**
The title should be self-explanatory about the issue. For instance, “False Text in FAQ Section on the Career page.
**2. Background Information**
Background information on bugs can help developers to comprehend the problem. It provides the details of the issue that was encountered. Incorrect information can confuse and take up the time of testers and developers.
It is essential to speak clearly about the bug’s background details. It is always beneficial to use complete sentences.
**3. Environment**
A bug may manifest in specific environments and not in others. For instance, a bug occurs when you run the site on Firefox or an app is not working correctly on one of the iPhone model. The bugs can be detected using cross-browser testing or tests that cross devices.
When reporting a bug, QAs need to be able to specify whether the bug was found within one of the distinct settings.
Utilize the template below to get specificity:
Device Type: Hardware and the specific device model
Os: Name of OS and version
Tester: Name of the person who discovered the issue.
The version of the software: The version of the program that is currently being tested and the bug has been discovered.
Connectivity Strength: The bug is dependent on an internet connection (4G, 3G, WiFi connection, Ethernet) mention its strength in the testing time.
The rate of reproduction: The number of instances where the problem occurred, including the exact steps in each reproduction.
**4. Steps to Reproduce a Bug**
Make sure you list the steps in order from one to last so that developers can quickly and precisely go through them and see the issue for themselves. Here’s an example of how to reproduce a bug with steps.
- Click “Get started” on the homepage.
- Select “Pricing Option”.
- Next steps
.
**5. Expected Result**
The software developer must know what the requirements are so that they can determine the degree to which the bug has a negative impact on your user’s experience.
Give the best scenario for the end-user. Be sure to give as much detail as possible. Do not just say, “the app isn’t working properly, but it should.”
**6. Visual Proof**
Screenshots, videos, and log files are required to show the exact nature of the problem. Based on the nature of the issue, the developer might require video, text, and images.
**7. Expected vs Actual Results**
Sometimes, what seems like a bug turns out to be expected behaviour. That’s why it’s good practice to include expected results in your bug report and what you would expect for those results. This way, other readers of your report can follow along and make sure everything lines up with how they expect it will.
By noting expected vs actual results, you’ll help your team get on the same page and focus on what needs fixing, rather than wasting time trying to figure out whether or not a result is as you thought it should be.
**8. Bug Severity**
Every bug needs to be categorized with an accompanying severity level, revealing the depth to which the bug affects the system and determining how fast it should be addressed.
The levels of Bug Severity:
Low: Bug will not cause any apparent breakdown of the system.
Minor: Results in unwelcome or unexpected behaviour, yet not so much as to interrupt the system’s function.
Major: Large parts of the system can be collapsed by the bug
Critical: A bug can trigger a complete system shutdown
Levels of Bug Priority:
Low: The bug is low and could be fixed at a later time. Other bugs that are more serious have priority.
Medium: Bugs can be corrected within the normal development and testing course.
High: The bug should be fixed immediately as it negatively affects the system and makes it inoperable until the issue is fixed.
**10 Tips For Writing A Bug Report**
1. Structure: test carefully
2. Reproduce: test it again.
3. Isolate: test it differently
4. Generalize: test it elsewhere
5. Compare: review results of similar tests
6. Summarize: relate the test to customers
7. Condense: trim unnecessary information
8. Disambiguate: use clear words
9. Neutralize: express problem impartially
10. Review: be sure
## Important Features of Writing A Bug Report
A great bug report should contain everything a programmer needs to recreate and solve your problem. Here are a few features that should be included in every good bug report:
### Bug Number/ID
A bug number helps in bug tracking and makes reference to bugs much simpler. Developers can quickly determine whether a specific bug has been resolved or not. It makes the entire testing procedure, retesting and the like more efficient and smoother.
### Bug Title
The bug titles are more frequently read than any other portion in the report. They should be able to explain what is with the bug. The Bug Title should also be evocative enough to allow the reader to comprehend the meaning behind it. A clear title for a bug is easy to comprehend and lets the reader know whether the bug was identified earlier or corrected.
### Priority
Based on the degree of severity and importance of the issue, the priority may be established for the bug based on its severity. Bugs can be classified as Blocker Critical Major or Minor Trivial, or a suggestion. The priority of bugs may be assigned from P1 through P5 to ensure that the most critical bugs are considered first.
### Platform/Environment
Configuring the browser, OS and different environments, like SIT, UAT, PROD, and LO is essential for writing a bug report. It is the most effective method of describing how the issue can be replicated.
The application might behave differently in the absence of the same platform or the environment. At the end of the tester’s experience, the bug might not manifest on the developer’s part. Therefore, it is recommended to be specific about the setting in which the issue was found.
### Description
Description of bugs helps developers to comprehend the issue. It describes the problem encountered. If the description is not clear, it can confuse and take up the time of testers and developers.
It is essential to convey the impact of the description. It is always beneficial to make use of complete sentences. It’s good to separate each problem instead of slicing them into pieces. Do not use words like “I believe” and “I consider myself to be convinced”.
## Steps to Reproduce a Bug
A thorough Bug report should be clear about the steps needed to reproduce the bug. These steps should be accompanied by actions that could cause the issue. Do not make general statements. Make clear the steps to take.
An excellent instance of writing a properly-written process is shown below.
Steps:
Select the product Abc01.
Click Add to Cart.
Select Remove to order to delete the item out of the shopping cart.
**Expected and Actual Result**
A Bug description isn’t complete without the actual and expected results. It is essential to describe what the test result was and what the reader should anticipate. The test taker should be aware of the good results of the test. It is imperative to clearly state what took place during the test and then state the results.
Screenshot
An image can be worth the words. Make a screenshot or record the screen for a video of the failure using proper captioning to emphasize the issue. Highlight any unexpected error messages using the colour light red. It helps to draw attention to the needed area.
Read also: [5 Professional Ways to Deal With Missed Bugs Effectively](https://testgrid.io/blog/deal-with-missed-bugs/)
## Conclusion
There is no substitute for someone who knows how to create a bug report when there’s a problem. When writing a bug report, your primary goal is to communicate information. Your goal is not to fix things; it’s not even to gather data. You can leave those roles up to others on your team, who are already equipped with tools like Excel spreadsheets and testing suites designed for that purpose. The purpose of a bug report is communication—communication from you about what went wrong, how it went wrong, how to resolve it, and how it can be stopped from going wrong again in future iterations of your product.
The most effective way to locate bugs is to run software through various real devices and browsers. Has the software been tested with both manual and automated testing? So that testers don’t miss any bugs, automated selenium testing should supplement manual tests.
Source : This blog is originally published at [TestGrid](https://testgrid.io/blog/guide-to-write-an-effective-bug-report/)
| jamescantor38 |
1,908,738 | Building Your First iOS App: Step-by-Step Tutorial for Beginners | Developing your first iOS application is a thrilling endeavor. As thrilling as the experience can be,... | 0 | 2024-07-02T10:22:54 | https://dev.to/rachel_geller/building-your-first-ios-app-step-by-step-tutorial-for-beginners-567c | appdevelopment, ios, tutorial, beginners | Developing your first iOS application is a thrilling endeavor. As thrilling as the experience can be, it can be equally daunting or even confusing. First time app developers need to be extremely cautious of the various regulatory requirements for iOS app development during the entire development process to ensure the app is aligned with the standards and regulations. Inability to do so can result in having to remake the entire app from scratch, which is another significant time and effort investment.
## **Factors to Consider for building the first iOS app**
While developing your first app for iOS, it is critical to think of a number of criteria in order to create a lucrative and popular product. The following are some important considerations to keep in mind before beginning your [iOS app development](https://www.armia.com/iphone.php) process:
### **Determine the Objective of the App intended audience:**
Identify the app's mission and objectives properly. Determine the issue that it addresses or the benefit it delivers to people. Identify the intended public's individual wants and habits as well. By being aware of these components, you can modify the application's functionality, design, and user experience to better meet the needs of your target audience.
### **Select the Best Creation Method:**
There are several methods for iOS app development, including native programming via Swift or Objective-C, as well as cross-platform app creation with tools such as React Native or Flutter. In deciding upon the creation strategy that most effectively meets your goals, analyze aspects such as production pace, performance targets, accessibility to device-specific capabilities, and the expertise of the development group.
### **Create an Easy to Use Experience:**
The effectiveness of an iOS application depends on a well-constructed and simple to navigate user interface (UI). Give consideration to concepts of user experience (UX), including clarity, uniformity, and ease of browsing. Adopt Apple's Human Interface Principles to guarantee that the application conforms to iOS design norms and offers a smooth and engaging experience for users.
### **Prepare for the App Store Filing:**
To guarantee an easy submitting procedure, familiarize yourself about Apple's App Store rules and regulations. Contemplate things like application metadata, pictures, application icons, and application details, which must be ready ahead of time. Furthermore, in accordance with Apple's regulations, handle any legality or security issues that involve data collecting and user permission.
### **Assure App Efficiency and Stability:**
Enhance the application's functionality to offer an entertaining and helpful user interface. Consider things like loading periods, storage utilization, and battery life. To verify interoperability and to fix any functional issues or fails, run the application on a range of iOS gadgets.
### **Schedule for Software Upgrades and Upkeep:**
iOS app development is a procedure that requires refinement. By adopting an adaptable and extensible code design, you can prepare for potential upgrades and upkeep. Look at your approach to issue patches, functionality additions, and scalability with the newest iOS versions. Publish improvements on an ongoing basis to handle consumer input and keep your software fresh and competitive in the software Store.
### **Maintain Application Protection:**
Prioritize app safety to safeguard customer information and retain user confidence. Use safe programming practices, encrypt critical data, and adhere to iOS privacy regulations. Continually upgrade the application's components and frameworks to resolve any problems with security.
### **Prepare for Application Advertising:**
Developing an amazing app is just the beginning. Following this comes the stage of establishing the app's advertising and publicity strategies ahead of time to raise exposure and draw customers. Evaluate elements like app store optimisation (ASO), marketing via social media, celebrity collaborations, and paid advertisements to efficiently reach your intended demographic.
## **Step By Step Guidance for iOS app development**
For beginners, iOS app development can be a challenging task. However, by following the below-mentioned step-by-step guide, you are sure to be on the right path and cover all bases.
### **Step 1: Prepare Your Progress Setting**
Download Xcode which has become the standard iOS application creation IDE. Install it by downloading it via the Apple App Store. Get acquainted with Xcode by Spend a few hours exploring the program's features and functionality, starting with the editor for codes, he layout developers, and simulators.
### **Step 2: Select an Application Concept and a Strategy**
For your debut venture, choose a simple application concept. It may be a simple calculator, weather-related software, or a task manager. Create an outline for the program's interface for users on a physical surface or with a design software. Plan out the various displays, the order of movement, and the connections between them.
### **Step 3: Launch a Fresh Xcode Task**
Run Xcode and choose the option for building a fresh Xcode application. Pick the option which reads 'Storyboard' as the consumer experience choice. Thereafter, select the 'App' style. Select a group and give the task a title.
### **Step 4: Construct a User Interfaces**
Create the interfaces for the app using tools like the Ui Designer. Button, categories, textual boxes, and additional UI components may be added after that. Create ports and activities to link UI components to the code.
### **Step 5: Compose Coding**
The following stage is to begin building code that will manage interaction between users and application functionality. Create routines that react to key presses, update tags, or conduct computations.
### **Step 6: Evaluate the Application**
For testing the application on various gadgets and formats of screens, utilize the iOS emulator. Launch the application, engage with it, and ensure that it works as it should.
### **Step 7: Fine-tune and modify**
Update the application on a regular basis by integrating user input and correcting any flaws or difficulties. To verify usability and efficiency, evaluate the application on real gadgets.
### **Step 8: Include Extra Capabilities**
Think about including fresh functions to the application as your confidence grows. This may comprise data retention, communication, or API integration.
### **Step 9: Get Ready to Submit the Application**
When uploading the application to the Apple App Store, double-check that you have built the appropriate app symbols, provided app information, and obeyed Apple's standards and regulations. To verify that your software satisfies quality requirements, extensively test it.
Utilizing these steps will make the process of iOS app development much more streamlined and organized, allowing better [app development](https://www.armia.com/). | rachel_geller |
1,908,737 | My Journey to Passing the Salesforce Accredited B2B Commerce Administrator Certification | Hey everyone, I recently passed my Salesforce Accredited B2B Commerce Administrator certification,... | 0 | 2024-07-02T10:20:28 | https://dev.to/alinemikel/my-journey-to-passing-the-salesforce-accredited-b2b-commerce-administrator-certification-1ek9 | salesforce |
**Hey everyone,**
I recently passed my Salesforce Accredited B2B Commerce Administrator certification, and I wanted to share my journey with you all. It was not easy, and I faced several challenges along the way.
At the start, I felt anxious about the vast amount of material I needed to cover. I kept questioning whether I was truly ready and capable of passing the exam. Just when I was about to give up, a friend recommended I try the practice tests from Pass4Success.
That turned out to be the best advice I received! The practice tests were incredibly helpful. They mirrored the actual exam format and covered all the essential topics, helping me understand what to expect. Gradually, my confidence grew as I started scoring better on these practice tests.
### Visit the salesforce official page for the Salesforce Accredited B2B Commerce Administrator certification (listed below)
While there are many resources to learn from I only mention here free resources and I personally not an advocate of paying lots of money for an IT certification. Some of these bootcamps and online courses can cost up to 2000$ and that is money that many students cant afford to pay, so it is important to me to write this guide to help as many students and help them pass this certification for free for the first try.
### salesforce accredited B2B commerce administrator study resources
salesforce official page they offer basic training and share about the key topic:
https://developer.salesforce.com/resources2/certification-site/files/SGAccreditedB2BCommerceAdministrator.pdf
you tube: there are many videos and tutorials on you tube and one of the greatest channel is freecodecamp
exam practice: salesforce accredited B2B commerce administrator free practice questions are here: https://www.pass4success.com/salesforce/exam/b2b-commerce-administrator
To enroll in the exam , current price of admission is 500$ , but price might vary slightly in your country. You can take the exam in either a test center close to you or do it online with several restrictions like cameras etc. If your employer is a microdot Partner then you might be eligible for free enrollment. You will need to sign up with your employer email to the microdot account , and get that free voucher.
#### Here are a few tips based on my experience:
Understand the core concepts and workflows. Don’t rush; take your time to grasp the fundamentals. Use practice tests to identify your weak areas.
It’s normal to feel anxious, but don’t let it deter you. Break your study sessions into manageable chunks and take regular breaks. Remember, persistence is key. If I can do it, so can you! Good luck to everyone preparing for the certification. You’ve got this!
| alinemikel |
1,908,723 | CSS Surprise Manga Lines | When a manga or anime character is surprised, lines focus on and highlight their face. Is it possible to create a similar effect with HTML and CSS? | 0 | 2024-07-02T10:14:59 | https://alvaromontoro.com/blog/68054/css-manga-lines | css, showdev, webdev | ---
title: CSS Surprise Manga Lines
published: true
description: When a manga or anime character is surprised, lines focus on and highlight their face. Is it possible to create a similar effect with HTML and CSS?
tags: CSS,showdev,webdev
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/9tfiz66r7j3ua2llwb4s.jpg
canonical_url: https://alvaromontoro.com/blog/68054/css-manga-lines
---
<p>There's a common effect in manga and anime when a person is surprised, shocked, or even disgusted: lines "radiate" from their face to canvas and highlight their facial expression.</p>
<p>I like that effect, and I've seen this done using web technologies with <code><canvas></code> or SVG, so I wanted to see if it was possible to do it only with CSS. The answer is yes... although it's not super efficient —and I wouldn't recommend it for anything in production.</p>
<p>The effect is displayed in the video below (it will open in a new tab):</p>
<p>
{% youtube https://www.youtube.com/watch?v=WRAuQKH6yYY %}
<p>I coded it using two elements (but I'm positive that <a href="https://twitter.com/ChallengesCss" rel="external nofollow">Temani Afif</a> or <a href="https://twitter.com/anatudor" rel="external nofollow">Ana Tudor</a> could find a cool way of doing it with only one using masks). One element is the image, and the other one is its container. The lines are drawn with the <code>::before</code> and <code>::after</code> pseudo-elements, superposed over the image.</p>
<p>In particular, I used <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/gradient/repeating-conic-gradient" rel="external nofollow">repeating conic gradients</a> (just three) and boosted them with several <a href="https://developer.mozilla.org/en-US/docs/Web/CSS/Using_CSS_custom_properties" rel="external nofollow">CSS custom properties</a>. That way, I could control several things:</p>
<ul>
<li>The separation between the lines</li>
<li>The thickness of the lines</li>
<li>The center point for the conic gradient</li>
<li>The size of the ellipse cropping the lines</li>
</ul>
<p>These last two points are important: by allowing the epicenter and the size of the "face canvas" to be set, the effect is easily customizable and can be applied to any image.</p>
<p>I could have added more custom properties (to set line colors or more options), but I chose against it.</p>
<p>You can see a <a href="https://codepen.io/alvaromontoro/pen/dyEEepP" rel="external nofollow">demo in action on CodePen</a>:</p>
{% codepen https://codepen.io/alvaromontoro/pen/dyEEepP %}
<p>Once all the custom properties were in place, I added an animation to update them at different points and applied them to the pseudo-elements with different speeds, delays, and timing functions to give a stronger impression of randomness.
The effect is far from perfect, and it could be improved by changing the conic gradients and the timings... still, such fast animations —and for background images to make things worse!— are inefficient. So we could get a nicer effect, but still be bad for performance.</p>
<p>A better way would be to generate a GIF with the lines and position it accordingly on top of the image (using these same variables). Browsers would be optimized for that over these costly CSS animations.</p>
<p>This mini-project was a fun way to practice backgrounds, custom properties, and animations. If you like creating things with CSS and different effects using that language, check this other article:</p>
<p><a href="https://dev.to/alvaromontoro/old-photo-effect-with-css-2699"><b>Old Photo Effect with CSS</b>
<img src="https://media.dev.to/cdn-cgi/image/width=1000,height=420,fit=cover,gravity=auto,format=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2Fljopi0w9usxsrvdghnj4.png" alt="A picture of a woman with an arrow and the text CSS pointing to the same picture but old-looking (in sepia, blurry, and with noise)" class="blog-post-image"></a></p>
| alvaromontoro |
1,908,727 | Buy Negative Google Reviews | https://dmhelpshop.com/product/buy-negative-google-reviews/ Buy Negative Google Reviews Negative... | 0 | 2024-07-02T10:12:53 | https://dev.to/mojashfinding/buy-negative-google-reviews-4k5l | webdev, javascript, beginners, programming | ERROR: type should be string, got "https://dmhelpshop.com/product/buy-negative-google-reviews/\n\n\nBuy Negative Google Reviews\nNegative reviews on Google are detrimental critiques that expose customers’ unfavorable experiences with a business. These reviews can significantly damage a company’s reputation, presenting challenges in both attracting new customers and retaining current ones. 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1,908,725 | The Full Form of BSc and Its Importance in Higher Education | Introduction Hey there! Ever wondered what BSc stands for and why it's such a big deal in higher... | 0 | 2024-07-02T10:11:49 | https://dev.to/priyanka11/the-full-form-of-bsc-and-its-importance-in-higher-education-37oe | bscfullform | **Introduction**
Hey there! Ever wondered what BSc stands for and why it's such a big deal in higher education? Well, you're in the right place. Today, we're diving deep into the world of the BSc degree, its full form, its significance, and much more. So, let's get started!
**What Does BSc Stand For?**
[BSc full form](https://universitychalo.com/course/bsc-bachelor-of-science-full-form) a Bachelor of Science. It's an undergraduate academic degree awarded for completing a program in science or technology-related fields. The roots of the BSc degree can be traced back to Europe, with its first introduction at the University of London in the mid-19th century.
**The Evolution of the BSc Degree**
The BSc degree has come a long way since its inception. Initially, it was a straightforward science degree, but over time, it has evolved to include various specializations and interdisciplinary courses. Today, BSc programs are tailored to meet the diverse needs of the modern job market and technological advancements.
**Types of BSc Degrees**
BSc (General): This is a more flexible program allowing students to study a range of subjects.
BSc (Honors): This is a more intensive program focusing on a specific discipline with a strong emphasis on research.
Specialized BSc Programs: These are tailored to specific fields such as Computer Science, Biotechnology, Environmental Science, etc.
Core Subjects in a BSc Program
BSc programs cover a wide array of subjects. The core subjects usually include:
Mathematics
Physics
Chemistry
Biology
Computer Science
However, these can vary depending on the specialization chosen by the student.
**Importance of a BSc in Modern Education**
In today’s fast-paced world, a BSc degree holds significant value. It equips students with analytical and research skills, critical thinking, and practical knowledge. These skills are highly sought after in various industries, making BSc graduates highly employable.
**Popular BSc Specializations**
BSc in Computer Science: Focuses on programming, algorithms, and data structures.
BSc in Biology: Covers topics like genetics, microbiology, and ecology.
BSc in Physics: Deals with the principles of matter and energy.
BSc in Chemistry: Studies chemical reactions, compounds, and their properties.
BSc in Mathematics: Involves advanced mathematical theories and applications.
**Admission Requirements for BSc Programs**
To get into a BSc program, students usually need to have completed their higher secondary education with a strong emphasis on science subjects. Many institutions also require students to pass entrance exams, which can be highly competitive.
**Skills Acquired During a BSc Degree**
During a BSc program, students acquire various skills:
Analytical Skills: The ability to analyze data and solve complex problems.
Research Capabilities: Conducting experiments and research projects.
Problem-Solving Skills: Tackling scientific and technical issues.
Communication Skills: Presenting findings and working in teams.
**Career Opportunities After a BSc Degree**
A BSc degree opens up numerous career paths:
Academic Careers: Teaching and research positions.
Industry Roles: Jobs in tech companies, pharmaceuticals, and more.
Research Positions: Working in labs and research institutions.
Government Jobs: Roles in public sector organizations.
Further Education After a BSc
Many BSc graduates opt for further education to enhance their skills and job prospects:
Master’s Degree Options: Specializing further in a chosen field.
Professional Courses and Certifications: Gaining additional qualifications.
PhD Opportunities: For those interested in deep research and academia.
**Top Institutions Offering BSc Programs**
Globally, some top institutions offering BSc programs include:
Harvard University
Stanford University
Massachusetts Institute of Technology (MIT)
In India, leading institutions include:
Indian Institute of Science (IISc)
Delhi University
Greater Noida Institute of Technology
Case Study: Greater Noida Institute of Technology
Greater Noida Institute of Technology (GNIOT) is a prominent institution in India offering a variety of BSc programs. GNIOT is known for its state-of-the-art infrastructure, experienced faculty, and robust curriculum that prepares students for both industry and research roles.
Challenges and Considerations in Pursuing a BSc
Pursuing a BSc degree can be challenging. Some common hurdles include:
Intense Curriculum: The coursework can be demanding.
Balancing Theory and Practice: Managing both theoretical knowledge and practical applications.
To overcome these challenges, students can:
Stay Organized: Keep track of assignments and deadlines.
Seek Help When Needed: Don’t hesitate to ask for help from professors and peers.
Practice Time Management: Balance studies with other activities.
**Conclusion**
In conclusion, a BSc degree is a valuable asset in today’s education landscape. It not only provides foundational knowledge in science and technology but also equips students with essential skills for their careers. Whether you're aiming for a job in the industry or planning to pursue further education, a BSc degree can open many doors. [Universitychalo](https://universitychalo.com) is a search engine where we search colleges details etc.
**FAQs**
What is the duration of a BSc degree?
Typically, a BSc degree takes three to four years to complete, depending on the country and institution.
Can I pursue a BSc degree online?
Yes, many institutions now offer online BSc programs, providing flexibility for students.
What are the differences between a BSc and a BA degree?
A BSc focuses on science and technical subjects, while a BA is centered around arts and humanities.
How does a BSc degree benefit my career?
A BSc degree provides essential skills and knowledge that are highly valued in various industries, enhancing job prospects and career growth.
Are scholarships available for BSc students?
Yes, many universities and organizations offer scholarships for BSc students based on merit and need. | priyanka11 |
1,908,724 | FRONTEND TECHNOLOGY | Introduction Frontend technology which can also be referred to as the client-side... | 0 | 2024-07-02T10:11:05 | https://dev.to/mercy_ugadu_01c9e43af030b/frontend-technology-32mg | hng, webdev, frontend, hnginternship | ## Introduction
Frontend technology which can also be referred to as the client-side development. It is the process of building user interface and user experience of web, desktop,and mobile applications using programming language, frameworks and essential tools to create the visual aspects of the software application which users can interact with directly.
Features of Frontend Technology includes:
1. User Interface UI: this is used to create visual elements, layout and designs for applications
2. User Experience UX: this feature is used to ensure that the application is responsive, intuitive and bring about seamless usage by the user.
3. Client-side logic: is a feature that handles user input, processing data, and updating the UI dynamically.
Key frontend technologies include:
1. HTML (Hypertext Markup Language): For structuring content and creating the foundation of web pages.
2. CSS (Cascading Style Sheets): For styling and layout.
3. JavaScript: For adding interactivity, dynamic effects, and client-side logic.
4. Frameworks like React, Angular, and Vue.js: For building complex applications efficiently.
5. Libraries like jQuery and Lodash: For simplifying tasks and improving performance.
6. Build tools like Webpack and Rollup: For managing dependencies, optimizing code, and streamlining development.
7. Modern frontend techniques like responsive design, mobile-first development, and progressive web apps (PWAs).
## JavaScript Frameworks and Libraries
JavaScript frameworks and libraries have revolutionized frontend development, enabling efficient and maintainable code. Popular choices include:
- React: A component-based library for building reusable UI components.
- Angular: A full-fledged framework for building complex applications.
- Vue.js: A progressive and flexible framework for building web applications.
- Ember.js: A mature framework for building ambitious web applications.
## Contrast between ReactJS and Angular
## Language
Angular is written in TypeScript, while React is written in JavaScript (JSX script).
## Functionality
Angular is a full-fledged structural framework used for building mobile and desktop web apps, while React is a library used for creating interactive and complex user interfaces.
## Data Binding
Angular uses two-way data binding, while React uses one-way data binding.
## DOM
Angular uses real DOM, while React uses virtual DOM.
## Learning Curve
Angular has a steeper learning curve, while React is easier to learn.
## Popularity
React is more popular than Angular based on the number of stars on GitHub and the results of a Statista survey in 2022 on the most used web frameworks worldwide.
## Performance
React is faster than Angular due to its smaller bundle size and rendering optimizations.
## Conclusion
Frontend technology is constantly evolving significantly in recent years with a focus on efficiency, scalability, and user experience using new tools, frameworks, and techniques emerging regularly.
By leveraging HTML5, CSS3, JavaScript frameworks, build tools, and modern techniques, developers can build fast, user-friendly, secured, and maintainable web applications with great user experience across various devices and platforms.
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| mercy_ugadu_01c9e43af030b |
1,908,721 | Penetration Testing: What It Is and Why It Is Important | Penetration testing, also known as pen testing or ethical hacking, is a proactive security... | 0 | 2024-07-02T10:10:16 | https://dev.to/wetest/penetration-testing-what-it-is-and-why-it-is-important-2m4e | testing, penetrationtesting, softwaretesting, apptesting | 
Penetration testing, also known as pen testing or ethical hacking, is a proactive security assessment technique used to identify vulnerabilities and weaknesses in computer systems, networks, or applications. The purpose of penetration testing is to provide organizations with valuable insights into their security posture and to help them reduce vulnerabilities before malicious actors exploit them. In this blog, we will discuss penetration testing services and why they are essential for businesses.
## What is Penetration Testing?
Penetration testing simulates real-world attacks in a client-authorized state to assess the effectiveness of security controls and identify potential security risks. It is a systematic process that involves identifying target systems, detecting vulnerabilities, and assessing the risk associated with them. Penetration testing can be performed using various methods, including black-box, white-box, and grey-box testing.
## Why Should We Do Penetration Testing?
There are several reasons why businesses should conduct penetration testing:
Identify and mitigate vulnerabilities: Penetration testing helps organizations identify and address vulnerabilities in their systems, networks, or applications before they can be exploited by malicious actors.
Comply with industry standards and regulations: Many industries have specific regulations and requirements for cybersecurity, and conducting regular penetration tests can help businesses ensure compliance.
Improve security posture: By identifying and addressing vulnerabilities, businesses can improve their overall security posture and reduce the likelihood of a successful cyberattack.
Protect sensitive data: Penetration testing can help organizations protect sensitive data by identifying and addressing vulnerabilities that could lead to data breaches.
Maintain customer trust: By proactively addressing security vulnerabilities, businesses can maintain customer trust and protect their brand reputation.
## Penetration Testing Services Offered by WeTest
**Mini-Program Penetration Testing**
WeTest conducts security testing for mini-programs, which can promptly discover vulnerabilities, and help businesses take measures to fix these vulnerabilities in time, reducing risks caused by security loopholes.
**Web Penetration Testing**
WeTest evaluates the security of systems and networks through black-box and white-box testing. This process involves identifying target systems, detecting vulnerabilities, and assessing the associated risks.
**Mobile Application Penetration Testing**
WeTest identifies potential vulnerabilities in mobile applications (Android and iOS) at different stages. This includes testing application protocols, component security, open ports, inter-process communication (IPC), file read/write security, and data encryption security.
**SDK Penetration Testing**
WeTest performs comprehensive testing on various aspects of SDKs, covering areas such as resource protection, storage security, transmission security, obfuscation configuration, and other penetration testing elements related to SDK files.
## Conclusion
Penetration testing is a crucial component of an organization’s security strategy. It helps businesses identify and address vulnerabilities in their systems, networks, or applications, ensuring compliance with industry standards and regulations, and protecting sensitive data. [Penetration Testing Services, Security Assessment — WeTest](https://www.wetest.net/products/penetration-testing?source=dev) provides a comprehensive solution for businesses looking to improve their security posture and reduce the risk of cyberattacks.
| wetest |
1,908,720 | How AI Interior Design Technology Helps Architecture Building | The world of architecture is constantly evolving, embracing new technologies to create more... | 0 | 2024-07-02T10:09:58 | https://dev.to/deborahf/how-ai-interior-design-technology-helps-architecture-building-2ae8 | architecture, ai, interior, technology | The world of architecture is constantly evolving, embracing new technologies to create more efficient, sustainable, and visually stunning buildings. One of the most exciting advancements in recent years is the rise of Artificial Intelligence (AI) in interior design. AI tools are no longer science fiction; they're transforming the way architects and designers approach interior spaces, ultimately impacting the entire architectural building process.
So, how exactly is AI making waves in this field? Let's delve into the ways AI interior design technology is assisting architects in building the future:
## Speeding Up the Design Process
Imagine a world where generating initial design ideas takes minutes, not hours. AI makes this a reality. With the help of AI tools, architects can input various factors like the client's preferences, the size and layout of the space, and even desired functionalities. The AI then generates a range of initial design concepts, giving architects a springboard for further development. This not only saves valuable time but also sparks creativity by exploring possibilities beyond traditional methods.
Think about it - a client walks into a meeting unsure of what they want. With AI's virtual staging capabilities, the architect can showcase different design options with furniture and decor virtually placed within the empty space. This allows clients to visualize the final product more effectively and make informed decisions early on.
Furthermore, AI can suggest alternative layouts that optimize space usage. Imagine an AI tool taking your rectangular living room and proposing a layout with a separated work area or an open kitchen concept. This ability to explore various layouts quickly helps architects present a wider range of options to their clients.
## Boosting Efficiency and Accuracy
Gone are the days of tedious manual tasks like space planning and furniture placement. AI takes over these repetitive chores, freeing up architects' time to focus on more complex design challenges and client communication. Imagine an AI tool that can automatically arrange furniture within a room, ensuring smooth traffic flow and maximizing space utilization. This not only saves countless hours but also reduces the risk of human error.
The magic doesn't stop there. AI can generate high-quality 3D models and photorealistic renderings of the interior design. This allows for a more immersive design experience for both architects and clients. Imagine being able to virtually walk through your dream kitchen before construction even begins! This not only aids visualization but also facilitates communication and reduces the need for costly revisions later on.
## Designing Smarter and Greener
AI isn't just about efficiency; it's also about creating smarter and more sustainable spaces. With AI, architects can personalize interior design based on user data, such as lifestyle and preferences. Imagine an AI tool that analyzes a family's needs and suggests a layout that incorporates dedicated study areas for children or maximizes natural light for an avid reader. By understanding user behavior, AI can create more functional and comfortable living environments.
But AI's impact goes beyond comfort. This technology can be a champion for sustainability. AI tools can analyze a building's data and recommend energy-efficient lighting solutions or sustainable building materials. Imagine an AI tool that suggests installing skylights in a north-facing room to maximize natural daylight usage or recommending recycled materials for flooring to reduce environmental impact. By optimizing energy consumption and promoting sustainable practices, AI is helping architects design buildings that are kinder to the planet.
## A Glimpse into the Future
The [future of AI in architecture](https://www.styly.io/blog/mute-icons-contextual-design-and-the-future-of-architecture-styly-interior-ai) is brimming with exciting possibilities. We can expect AI to take on even more complex tasks, such as generating custom furniture and building elements tailored to specific needs. Imagine an AI tool that can design a unique, space-saving bookshelf for an oddly shaped corner or create a custom-built desk that perfectly integrates into a home office environment. The possibilities for personalization are endless.
Another exciting development is the potential of AI for creating virtual reality (VR) experiences of architectural designs. Imagine putting on a VR headset and stepping into a fully rendered 3D model of your future home before construction even starts! VR experiences powered by AI can revolutionize the way architects showcase their designs and allow clients to truly experience their dream space before a single brick is laid.
##Collaboration, Not Replacement
It's important to address a common concern - is AI replacing architects? Absolutely not! AI is a powerful tool, but it lacks the human touch, creativity, and experience that architects bring to the table. AI should be seen as a collaborator, not a competitor. Architects will continue to play a crucial role in interpreting client needs, translating vision into reality, and making those final, critical design decisions.
## Conclusion
[AI interior designer](https://www.styly.io/) is a game-changer for the architectural building process. By streamlining workflows, enhancing design solutions, and promoting sustainable practices, AI is empowering architects to create spaces that are not only beautiful but also functional, efficient, and environmentally conscious. As AI technology continues to evolve, we can expect even more exciting advancements that will reshape the future of architecture. The next time you step into a thoughtfully designed building, remember, there's a chance AI played a part in making that space not just aesthetically pleasing, but also a reflection of your needs and a testament to human ingenuity and technological innovation.
| deborahf |
1,908,719 | A rec, CNAME, TXT recs | I was always confused with the different kinds of records using for the domain pointing and... | 0 | 2024-07-02T10:09:35 | https://dev.to/amythical/a-rec-cname-txt-recs-4loo | devops, networking | I was always confused with the different kinds of records using for the domain pointing and configuration.
Making a note so I remember them and also if it helps others :-
A record - Point a domain/subdomain to an IP Address
CNAME - create alias for domain or subdomain
TXT Records - text used for configuration or validation (Usually SPF/DKIM records)
MX - Used for mail server configuration | amythical |
1,908,681 | Building Your DB Server and Interacting With Your DB Using an App on AWS | Welcome to another AWS lab walkthrough! In this session, we'll guide you through setting up a... | 0 | 2024-07-02T10:05:30 | https://dev.to/emmanuel_oghre_abe292c74f/building-your-db-server-and-interacting-with-your-db-using-an-app-on-aws-50bl | aws, alx, awscommuinty | Welcome to another AWS lab walkthrough! In this session, we'll guide you through setting up a relational database server on Amazon RDS and interacting with it through a web application. By the end of this lab, you'll have a fully functional setup where your database is not only deployed but also actively serving a web application.
**Overview**
Lab Title: Build Your DB Server and Interact With Your DB Using an App
AWS Version: 4.6.6 (TESS2)
Duration: Approximately 30 minutes
Scenario
At the end of the lab the infrastructure will look like this.
**Objectives**
After completing this lab, you will be able to:
Launch an Amazon RDS DB instance with high availability.
Configure the DB instance to permit connections from your web server.
Open a web application and interact with your database.
Scenario
Imagine you start with a basic infrastructure setup, and through this lab, you'll evolve it into a more robust architecture capable of hosting a scalable and resilient database solution.
**Step-by-Step Guide**
Task 1: Create a Security Group for the RDS DB Instance
Navigate to VPC: In the AWS Management Console, go to Services > VPC.
Create Security Group: Click on Security Groups in the left pane and then Create security group.
Security group name: DB Security Group
Description: Permit access from Web Security Group
VPC: Lab VPC
Configure Inbound Rules: Add a rule to permit inbound database requests.
Type: MySQL/Aurora (3306)
Source: Type "sg" and select Web Security Group.
Create Security Group: Finish by clicking Create security group.
Task 2: Create a DB Subnet Group
Navigate to RDS: In the AWS Management Console, go to Services > RDS.
Create DB Subnet Group:
Click on Subnet groups in the left pane and then Create DB Subnet Group.
Name: DB-Subnet-Group
Description: DB Subnet Group
VPC: Lab VPC
Add Subnets:
Select subnets from at least two Availability Zones (e.g., us-east-1a and us-east-1b).
Choose subnets associated with CIDR ranges like 10.0.1.0/24 and 10.0.3.0/24.
Create DB Subnet Group: Click Create.
Task 3: Create an Amazon RDS DB Instance
Launch RDS Instance:
In the RDS console, click Databases in the left pane and then Create database.
Select MySQL under Engine Options.
Choose Dev/Test under Templates.
Select Multi-AZ DB instance for Availability and durability.
Configure Settings:
DB instance identifier: lab-db
Master username: main
Master password: lab-password
DB instance class: db.t3.micro
Allocated storage: 20 GB
Virtual Private Cloud (VPC): Lab VPC
Security group: Select DB Security Group.
Additional Configurations:
Initial database name: lab
Uncheck Enable automatic backups and Enable encryption for lab purposes.
Create Database: Click Create database.
Task 4: Interact with Your Database
Access Web Server IP: Retrieve the IP address of your web server from the AWS console.
Open Web Application: Paste the WebServer IP address into a browser tab and press Enter.
Navigate to the RDS link displayed on the page.
Configure Database Connection:
Enter the Endpoint (copied from RDS console earlier).
Database: lab
Username: main
Password: lab-password
Click Submit.
Test Application: The web application should display an Address Book.
Add, edit, and remove contacts to verify database functionality.
**Note!!! You can configure the password, admin and database name as you see fit**
**Conclusion**
Congratulations! You have successfully completed the lab. You've learned how to deploy a high-availability RDS database instance on AWS, configure security settings, and integrate it with a web application. This setup ensures your database is not only robust but also scalable and fault-tolerant, suitable for various production workloads.
For more AWS tips and guides, stay tuned to our blog or explore further in the AWS documentation. Happy cloud computing!
With this guide, you're now equipped to handle AWS RDS deployments and database interactions like a pro. Let me know if you have any questions or need further assistance!
| emmanuel_oghre_abe292c74f |
1,908,718 | The Role of Data Scientists in Different Industries - Data science course in Chennai. | Data science is transforming a wide range of industries by revolutionizing how businesses operate... | 0 | 2024-07-02T10:05:29 | https://dev.to/dilip_guddappa_70c24e0d43/the-role-of-data-scientists-in-different-industries-data-science-course-in-chennai-1ffm | Data science is transforming a wide range of industries by revolutionizing how businesses operate make decisions, and interact with their customers. as more sectors recognize the value of data-driven insights,the role of data scientists has grown significantly. These professionals are now tailoring their skills to address the unique needs of carious industries, make data science an essential component of modern business . So a [data science course in chennai](https://www.learnbay.co/datascience/chennai/data-science-course-training-in-chennai) helps a lot. This web publication explores scientists' critical roles and responsibilities through unique industries, highlighting their impact and contributions.
1. Healthcare
In the healthcare industry, statisticians play an important role in improving patient outcomes, ensuring efficiency and leading important research. By analyzing large amounts of data from electronic health records (EHRs), clinical studies, and other tools, they can identify patterns and predict disease outbreaks. Predictive models and data management development efforts help identify high-risk patients, improve treatment plans, and improve prevention strategies. Scientists have made great contributions to medical research, drug development and genomics, paving the way for new treatments.
2. Finance
Financial institution's data scientists are essential for risk management, fraud detection, and financial strategies. They use computer technology to read algorithms to analyze business models, credit scores, and data changes, allowing financial institutions to make informed decisions. Data scientists can help protect assets and maintain compliance by detecting fraud and anomalies instantly. It also improves the forecasting method for data management, increases the accuracy of the budget, and provides better returns.
3. Retail
In retail, data scientists improve the customer experience, improve the supply chain, and increase sales through personalized marketing. They analyze customer behavior, purchase history and social media interactions to create marketing plans and recommend products that match the individual's interests. Data scientists improve inventory management to ensure products are available when and where customers need them. Their insights help retailers adjust pricing strategies, increase traffic and reduce operating costs.
4. Manufacturing
Manufacturing organizations use data scientists to improve manufacturing processes, improve product quality, and reduce downtime.Recording scientists analyze sensor messages from devices and equipment to predict reliability and minimize interference to prevent glass breakage. They develop production plans with sustainability in mind, taking into account efficient resource allocation and waste reduction. Additionally, statisticians detect errors and anomalies to deliver best-in-class performance and often increase customer satisfaction with core and pre-owned products.
5. Telecommunications
Analytics researchers in the field of communication have made the community work better, made it more attractive to customers and added more flexible services. By analyzing website visitors, they can understand and detect bottlenecks, making connectivity seamless and reducing downtime. Data science courses in Chennai also analyze customer reviews and trends to improve provider selection and tailor plans to customer needs. Forecasting models help predict demand, allowing telecom companies to expand and provide services.
6. Energy
Data scientists in the electricity zone focus on optimizing electricity production, distribution, and consumption. They analyze facts from clever grids, renewable electricity sources, and consumption patterns to enhance electricity efficiency and decrease environmental effects. By predicting energy demand and optimizing supply, data scientists help energy companies manage resources effectively and lower operational costs. Their insights also aid in developing sustainable energy solutions, promoting the use of renewable resources, and reducing carbon footprints.
7. Transportation and Logistics
In transportation and logistics, data scientists improve planning, ensure delivery of goods, and streamline fleet management. They added fashion to predict the fastest and most economical route by analyzing visitor data, weather and public transport times. Data scientists optimize warehouse operations, add just-in-time inventory and reduce warehouse costs. Their insights help logistics companies provide accurate delivery estimates and increase reliability, thereby increasing customer satisfaction.
8. Entertainment and Media
The enjoyment and media enterprise depends on records scientists to apprehend target-audience preferences, optimize content material delivery, and beautify person engagement. By examining viewership data, social media interactions, and demographic information, facts scientists create customized content material suggestions and centred advertising. Their insights assist media corporations in producing content that resonates with audiences, growing viewer retention and loyalty. Additionally, records scientists optimize streaming offerings by predicting demand and managing bandwidth efficiently.
9. Education
In education, data scientists increase student achievement, improve design, and improve performance management. They analyze average academic records, attendance records, and engagement metrics to understand at-risk college students and develop personalized intervention strategies. Data scientists contribute to curriculum development by testing the effectiveness of educational strategies and materials.
10. Government and Public Services
Data scientists in bureaucrats and public choices influence policy-making, shape public safety, and shape civil services. They increase the fashions of predicting and preventing incidents by examining the use of crime data, traffic patterns and social contributions to ensure public safety. Data scientists analyze public health records to inform coverage options and improve health delivery. Data science course in Chennai Their insights help governments optimize aid allocation, streamline supplier delivery, and beautify general effectiveness in public administration.
Conclusion
The dynamic and indispensable role of data scientists across various industries.
Ability to analyze complex datasets
Development of predictive models
Derivation of actionable insights
Driving innovation, efficiency, growth
Increasing impact of data science as it evolves
| dilip_guddappa_70c24e0d43 | |
1,908,717 | UI vs. UX: What’s the difference? | We live in a world dictated by technology, design, and experiences. These factors combine to render... | 0 | 2024-07-02T10:04:09 | https://www.peppersquare.com/blog/ui-vs-ux-whats-the-difference-read-the-comprehensive-comparison-here/ | ui, ux, webdev, design | We live in a world dictated by technology, design, and experiences. These factors combine to render our lives easier; more comfortable. It shouldn’t come as a surprise that most of our everyday conversations circle back or find their grounding in developments in the tech space — most importantly, back to our phones.
**Ask yourself this, “how often do I check my phone in my waking hours”.**
Our best bet is once every few minutes.
Are we right? Now, let’s filter out a few things. How often do you use your phone to take or make a regular call? Maybe twice a week?
In contrast, how often do you use your phone to open an app to post a cute picture of your furry friend on social media, order food, or sit for a video work call? You’ve lost count, haven’t you?
Now, let’s chalk out one last detail. How many apps do you presently have on your phone?
Once you’ve figured out how many, go one step further and determine which ones you use the most and which ones are just sitting there, gathering cobwebs.
Have you ever wondered why you rarely use some apps while you can’t imagine life without a select few? Is it because you rarely find the need for some? Or is it because you’re not persuaded enough to use it?
**It’s because looks matter and how you feel matters.**
It’s no secret that some apps are so loved while some aren’t. However, the secret perhaps lies in giving the user what he doesn’t even know he wants.
But, before we learn the tricks of the trade, it’s important to understand the basics of the trade itself.
## What Is User Interface Design?
User interface design is a graphical design of an application. It comprises buttons, pictures, recordings, texts, and lays the foundations for how the application functions. The primary objective of a UI designer is to make an interface that instantly connects the user to the service while ensuring a seamless experience (a UX designer helps in the process, but we’ll get to that later).
While it may only seem like fun, games, and creativity involved (and UI asks for a lot of these traits, too), it most definitely isn’t an easy feat to pull off. It’s an arduous task to plug into the trends across the work and tap into the psyche of different age groups and geographies to create something that appeals to the mass.
Your UI can either make or break your business if you’re not careful. So if you must invest in something for your service to boom, your first step should be to hire an exceptional UI designer.
If you don’t believe that “well begun is half done”, look at some revolutionary app designs say, Airbnb, and let us know if it still didn’t change your mind. The #1 rule to designing an app that people want to use is to first think about usability.
**And that begins by understanding what sort of user interface you’re looking to design:**
User interfaces can broadly be categorized into three primary types — Graphical user interfaces (GUIs), Voice-controlled interfaces (VCIs), and Gesture-based interfaces.
**Graphical user interfaces** that we see and know now were first introduced in the 1970s by the Xerox Palo Alto research laboratory, California. It was commercially first deployed in Apple’s Macintosh and Microsoft’s Windows operating systems.
It was first designed to tackle usability issues in text-based interfaces for the average user. Its intuitive design would quickly make it the go-to method in software applications and programming. The interface was simple. The user could identify the tasks he had to perform from point A to B without difficulties.
Scroll bars, buttons, menus, cursors, and other graphical icons became the new kid on the block and set the standard. Of course, over the years, designs, interfaces, and applications have significantly changed (for example, 2022 is bringing back neumorphism and glassmorphism), yet the foundations are the same.
**Voice-controlled interfaces** need no introduction. It’s all around us, making our lives easier. There’s an innate urge to ask it to perform a task when we see one. How many times have you walked into a friend’s house and almost immediately requested a virtual assistant like Siri or Alexa to “play some groovy beats”?
We seem not to care that the assistant may or may not follow the command. There’s a novelty in talking to a device that seems to never fade. Voice-user interfaces are the future, and the future is here. If you haven’t brought home an Alexa, a Siri, or any other voice assistant home, it’s safe to say you’re still living in the 90s.
**Gesture-based interfaces** may not be as popular as voice-controlled interfaces have, but it’s soon getting there. The past few years have not only changed the way we live our lives but it’s also changed consumer behavior, taking giant leaps in medical science as well.
When entering a mall or a similar public space, how often do you find yourself standing in front of a digital temperature scanner and waving your hand in front of it? It’s one of the ways gesture-based interfaces have evolved over the years.
But, these interfaces aren’t limited to touchless screens. Perhaps you’ve been using these interfaces for years now, without even realizing it. For instance, you don’t even need a keypad to perform some activities. You can tap, pinch, or scroll, and some devices let you interact with features in a “touchless” route. Gesture-based interfaces also include 3D design spaces and virtual reality games.
Many UI/UX designers make the mistake of their interface only being aesthetically pleasing. While that plays a huge role in how users perceive the interface, they should not forget that a user wants a platform that requires him to use as minimal brainpower as possible.
Is your service easy to navigate from the first step to the last one, or does it take the user on a tour around our galaxy? If it does, the user will stop before Mars before giving it a second shot.
Suppose your service isn’t a pay and order service but an app that functions through the undeniable power of social media. In that case, the objective of the interface should be to keep the user staying on your platform for as long as they possibly can — they need not even contribute.
## What’s a good way to tell if you’re doing the right thing when it comes to user interfaces?
You can always fall back on Dieter Ram’s 10 commandments of good design whenever in doubt. Always remember that good design is thorough to the last detail. A good UI/UX designer knows when to follow the rules, maybe break a few, but always when to stop and discard the frills. If you’re going to design an interface loved by millions, these rules will help you get started.
Create predictable elements. When designing a button, avoid loud, flashy colors. You’ve mastered the first step to getting the user hooked. Now, label the icons clearly, and importantly focus on which elements you want to be viewed first. Keep it simple and prioritize a neat alignment pattern. Each button should perform a task that quickly takes the user to point B. The aim should be to minimize the number of actions from start to finish.
But designing a button or making an interface isn’t the end of it. How a user reacts to a specific element and assessing why someone decides to linger on or leave immediately is crucial in the design process.
One may easily find many similarities and an overarching overlap between UI and UX design, yet the differences are stark.
## What is UX design, and how is it different from UI design (UI vs UX design)?
While UI design focuses more on the elements and what a particular interface looks like, UX design deals more with how the platform functions. At the core, it considers interface design, information architecture, and usability as the three main pillars.
Think about it this way, how many seconds ago was the last time you used an app? Did you use it out of a need or to while the time away? If you spent a reasonable amount of time on it, it probably means that you don’t particularly hate the app.
**The more time a user spends on the interface out of sheer will, the more successful it is.**
It also means that the UX designer has gone to strenuous lengths to understand how the general psyche of the mass works and spent weeks, months, or even years trying to learn or unlearn how people perceive a product and how they interact with it. Armed with that knowledge, the UX designer suggests tweaks and fixes along the way to render the design more likable, valuable, attractive, and perhaps even addictive.
## UI vs. UX — Here’s a good way to identify the differences between UI and UX
- The objective of UI- Visual aspects of a product
- The focus of UX- Usability and experience of using the product
- The focus of UI- More on the aesthetic appeal, interactive elements, fonts, typography, colors, etc.
- The focus of UX- Overall user experience and how user-friendly the product is.
- UI design aspects- Wireframing, prototyping
- UX design aspects- Understanding user needs with a basic layout, mockups.
- Timeline for UI- Older concept
- Timeline for UX- Newer concept\
- The use of UI- Strictly associated with digital technology.
- The use of UX- Mostly associated with user behavior and their needs.
- Need for UI- Understanding of front-end software tools.
- Need for UX- Understanding user transactions.
- Focus of UI- On visual elements.
- Focus of UX- On labels and patterns.
**Combine the best of:**
- Hours of intensive research
- Designs that speak volumes
- Strategies that not only think about the now but the future
- And, content that hits the sweet spot,
What you have in front of you is design that sells and has people coming back for more.
But, simply understanding the whats and the whys of [user journeys](https://www.peppersquare.com/blog/user-journey-mapping-how-and-why-does-it-matter-for-your-business/) isn’t the end of what a UX designer is expected to do. The effect it has on people, the delivery, the aftermath, and the use of the digital space is also considered. They must always leave room for improvement and understand that the needs and demands and how users perceive design change with the changing world.
**It isn’t just about creating code and putting it together, it’s also about the message the brand wants to convey and how the user identifies the brand.**
It’s about fulfilling a need, a promise, a void for the user. When you address this void, it makes a significant commercial impact.
However, there is a significant overlap between UI and UX design.
**How are UI design and UX design related?**
Although both UI and UX design processes are different, the end goal is the same. Both UI/UX designers implement plans to develop user-friendly products to keep customers satisfied. UI design deals more with the visual properties of a product and how to make it aesthetically appealing to the user. On the other hand, it is the job of the UX designer to determine if even the most well-designed UI can sour the experience for a user.
**What Should I focus on — UI design or UX design?**
Both.
There is no one way to go about it. UI design can’t exist without UX design and vice-versa. Typically, UX design comes into play first. It encompasses all aspects of the user’s interaction with the product. User experience design is a multi-step, rigorous, and painstakingly well-researched process that involves creating user personas and mapping out their journey.
On the other hand, UI design must be clear and visual metaphors should not go over a user’s head. Although a new product, it should have a quality of familiarity. It should be efficient and consistent throughout. But, getting to this stage requires testing, feedback, and user analyses — all of which is possible only with the power of UX design.
Some designers feel that UX design has a slight upper hand.
This leads us to the age-old question –
**Can you do UI design without UX design?**
Sure. You can.
But why do a half-baked job?
One might even say that UI is an integral component of good UX design. Some may even go above and beyond and say that UI is UX. UX designers deliver crucial information to UI designers that include customer and market research, visions for prototypes, and how one can bring interfaces to life. Without UX, UI is just an interface.
**Is UI easier than UX?**
Are apples tastier than bananas?
Is blue better than green?
The answer will always be subjective. However, it’s typically said that UI design may be easier than UX design. No obstacle or hurdle will seem like a challenge if you love what you do. Depending on who you identify as you should be better able to make the judgment.
Love digging deep and discovering more about the user’s experience with the product? Choose UX. If you lean more towards making things functional and the aesthetic aspect, you should divert your gaze towards UI design.
If you like to see things in a cohesive flow and as one singular entity — you’ll be happy to learn the nitty-gritty details of UX design. However, if you obsess over individual parts till you’ve found perfection, UI design is the path to choose.
**How Can a UX designer Utilize Cognitive Psychology to Shape UX?**
What does psychology have to do with design? Quite a lot.
Cognitive psychology focuses on how people acquire, process, and store information in their brains. It also studies mental processes like memory, problem-solving, emotional intelligence, and perception. All processes are studied under mathematical models and statistics to analyze data and behavior patterns. UX designers can leverage such data to shape UX design that will appeal to the masses.
**What does a User Experience designer do on a regular day?**
As with any other profession, not a single day is alike for a UX designer. Their journey of discovery starts with market research. Extensive research helps the UX designer filter the user’s needs and lends insights to user behavior, motivations, and existing gaps. Some of the most common methods for market research include surveys, customer analysis, focus groups, interviews, data collection, and benchmarking, among others. Once the initial research is complete, they move to the most crucial step.
Based on their findings, they categorize different sets of “personas”. Each persona sheds light on various factors like the persona’s needs, motivations, and geographies — information paramount to laying the setting stone for any interface.
They then move on to Information Architecture. To borrow from the words of uxplanet.org, “Information architecture (IA) is a science of organizing and structuring content of the websites, web and mobile applications, and social media software.” Sounds complicated? Don’t be alarmed. Think of it as a mind map. It’s the beginnings of a blueprint of an information hierarchy and placing secondary buttons concerning primary ones.
Along with a UI designer, a prototyping and wireframing process takes place. These may include basic sketches made on paper or a more digital version. Once the high-fidelity designs are rolled out, the UX designer has one more task to do — user testing. The UX designer may allow users to interact with a prototype or make observations based on focus groups, moderated test groups, and more and ask for valuable feedback to help improve the product.
All great UX designers and visual designers swear by the quadrant model.
Along with Information Architecture and User Research (often broadly categorized as market research), Experience Strategy or ExS and Interaction Design or IxD make up the UX quadrant model.
Experience strategy can be the game-changer you need, and if you play your cards well, it will be the only strategy you need.
It’s about creating a strategy that will bring value to the service you provide — a long-term business strategy. It not only focuses on the needs and wants of the user, but it also considers the aims and objectives of the company for years to come. This will often include a plan B, C, D, or more and a fail-safe plan.
What started off as a core task for UX designers, experience strategy has now evolved into a much bigger entity, warranting a UX strategist. Experience strategy sees that all parts of a machine are well-oiled, working in tandem, and operating smoothly.
Interaction design, on the other hand, is a more specialized area. It focuses on specific elements in an interface. Whether that’s a button, an action, a color scheme, a typography risk, user interaction design observes patterns and behaviors to optimize the interface for ease of use.
Arriving at which words to use (because ill-fitting content can decelerate everything) and visual representations make up a considerable chunk of interaction design. The purpose of IxD then is to keep the messaging crisp and clear. In addition, design, colors, patterns, and other visual and interactive elements can influence a user’s behavior patterns, mindset, and emotions. For instance, yellow can invoke cheerfulness, while red can signify an emergency.
Yet, there are so many underlying everyday tasks that a UX designer and a UI designer are expected to perform in tandem and in silos to get to the end goal.
With all the differences, one thing remains central and integral to both UI and UX designers — they start their process keeping the user in mind. While one focuses on what the interface looks like, the other focuses on the overall experience.
What according to you is the main difference between UI and UX? Have you been using the terms interchangeably or do they mean different things?
| pepper_square |
1,908,702 | HNG11 Task 0: Article about Frontend Technologies | Introduction In web development, it's important to work quickly, handle growth, and keep... | 0 | 2024-07-02T09:56:19 | https://dev.to/scriptjsh/hng11-task-0-article-about-frontend-technologies-250h | webdev, react | ## Introduction
In web development, it's important to work quickly, handle growth, and keep things easy to maintain. Developers use web frameworks to help with this. These frameworks are tools that make it easier to build websites and web apps. Instead of building everything from the ground up each time, developers can use these frameworks to save time. Web frameworks provide ready-made code, tools, and guidelines that help developers focus on the unique parts of their projects.
In this article, I will be talking about React and Angular as a web framework, and why I prefer React to Angular.
## What is Framework?
A framework is an organized, pre-configured collection of best practices, libraries, and tools that serve as a basis for creating software applications. It provides a consistent approach to developing and implementing applications, freeing developers from the tedious and low-level details to concentrate on the features of their projects.
## What is React?
React is a JavaScript package available as open source that is used to create user interfaces, especially for single-page apps that have dynamic data.
Facebook, along with a group of corporations and individual developers, maintains React.
## Unique Features of React
1. **Component-Based Architecture:** Components are the building blocks of user interfaces in React. We build complex UIs (User Interfaces) by building and combining multiple components
1. **Virtual DOM:** To maximize changes to the real DOM, React makes use of a virtual DOM. React modifies the virtual DOM before comparing it with an earlier snapshot of the virtual DOM if an object's state changes. It determines the most effective method for updating the actual DOM, reducing the amount of modifications required and enhancing performance.
1. **Declarative Syntax:** React gives developers the ability to specify how the user interface (UI) should appear in a specific state.
1. **JSX:** A syntax that combines HTML, CSS, JavaScript, as well as referencing other components. We describe how components look like and how they work using a declarative syntax called JSX
## What is Angular?
Angular is a JavaScript/TypeScript, HTML, and CSS platform and framework for creating client-side web applications.
Angular is a complete solution for creating dynamic, single-page applications (SPAs). It is developed and maintained by Google.
## Unique Features of Angular
- Component-Based Architecture
- Typescript
- Two-Way Data Binding
- Routing
## Why I prefer React
1. **Learning Curve:** React is easier to learn due to its simpler API and focus on building UI components.
1. **Flexibility:** React provides more freedom to choose libraries and tools for routing, state management, etc.
1. **Performance:** React uses a virtual DOM for efficient updates, making it fast for high-frequency updates.
1. **Component Reusability:** React encourages building small, reusable components.
1. **Community and Support:** React is backed by Facebook, with a large community and extensive ecosystem of third-party libraries.
1. **JSX:** React uses JSX, which allows HTML to be written inside JavaScript. This can make it easier to understand the structure of components.
## React Component Example
```
import React from 'react';
function Greeting(props) {
return <h1>Hello, {props.name}!</h1>;
}
export default Greeting;
```
## Angular Component Example
```
import { Component, Input } from '@angular/core';
@Component({
selector: 'app-greeting',
template: '<h1>Hello, {{name}}!</h1>',
})
export class GreetingComponent {
@Input() name: string;
}
```
## Conclusion
In conclusion, a framework serves as a blueprint that guides and supports developers in building scalable, and maintainable applications efficiently.
React has become one of the most popular frameworks/libraries for front-end development due to its efficiency, flexibility, and the big ecosystem that supports it. Whether building a simple website or a complex web application, React provides the tools and patterns necessary to create high-performance, scalable user interfaces.
| scriptjsh |
1,908,716 | ⚡ MyFirstApp - React Native with Expo (P20) - Code Layout Info Orders | ⚡ MyFirstApp - React Native with Expo (P20) - Code Layout Info Orders | 27,894 | 2024-07-02T10:03:54 | https://dev.to/skipperhoa/myfirstapp-react-native-with-expo-p20-code-layout-info-orders-534p | react, reactnative, webdev, tutorial | ⚡ MyFirstApp - React Native with Expo (P20) - Code Layout Info Orders
{% youtube eODIENcNAZc %} | skipperhoa |
1,908,715 | How to Initialize a Git Repository and Create a GitHub Repository Using the GitHub CLI | Setting up version control for your project is essential. This guide will help you initialize a Git... | 0 | 2024-07-02T10:03:34 | https://dev.to/forhad96/how-to-initialize-a-git-repository-and-create-a-github-repository-using-the-github-cli-4geh | Setting up version control for your project is essential. This guide will help you initialize a Git repository locally and create a corresponding repository on GitHub using the GitHub Command Line Interface (CLI).
#### Step 1: Initialize a Git Repository
1. Open your terminal.
2. Navigate to your project directory.
3. Run the following command to initialize a Git repository:
```bash
git init
```
#### Step 2: Install and Authenticate GitHub CLI
1. Install the GitHub CLI from [GitHub CLI website](https://cli.github.com/).
2. If you are not logged in, authenticate the CLI with your GitHub account by running:
```bash
gh auth login
```
#### Step 3: Create a Repository on GitHub
1. For a public repository, run:
```bash
gh repo create <repository-name>
```
2. For a private repository, run:
```bash
gh repo create <repository-name> --private
```
Replace `<repository-name>` with your desired repository name.
#### Step 4: Add Files and Make Initial Commit
1. Add your files and make an initial commit:
```bash
git add .
git commit -m "Initial commit"
```
#### Step 5: Push Your Local Repository to GitHub
1. Add the GitHub repository as a remote:
```bash
git remote add origin https://github.com/your-username/<repository-name>.git
```
Replace `your-username` with your GitHub username and `<repository-name>` with the name of your repository.
2. Push your local commits:
```bash
git push -u origin main
```
#### Bonus Features
**1. Show Remote URL:**
To check the remote URL of your repository:
```bash
git remote -v
```
**2. Change Remote URL:**
If you need to change the remote URL, use:
```bash
git remote set-url origin https://github.com/your-username/<new-repository-name>.git
```
Replace `<new-repository-name>` with your new repository name.
**3. Rename a Branch:**
By default, Git creates a branch named `main`. To rename the branch:
```bash
git branch -M new-branch-name
```
Replace `new-branch-name` with your desired branch name.
**4. List All Branches:**
To see a list of all branches in your repository:
```bash
git branch
```
**5. Switch to a Different Branch:**
To switch to a different branch:
```bash
git checkout branch-name
```
Replace `branch-name` with the name of the branch you want to switch to.
**6. Create and Switch to a New Branch:**
To create a new branch and switch to it immediately:
```bash
git checkout -b new-branch-name
```
**7. View Commit History:**
To view the commit history:
```bash
git log
```
**8. Stash Changes:**
If you need to switch branches but have uncommitted changes, you can stash them:
```bash
git stash
```
This command temporarily saves your changes. To apply the stashed changes later, use:
```bash
git stash apply
```
**9. Check Repository Status:**
To see the current status of your repository, including changes to be committed and untracked files:
```bash
git status
```
### Conclusion
By following these steps and utilizing the bonus features, you can efficiently set up a Git repository locally and on GitHub, manage remote URLs, handle branches, stash changes, and keep track of your repository status. These practices will enable smooth version control and collaboration for your project, making it easier to manage and track your work. Happy coding! | forhad96 | |
1,908,714 | How to Get the Directory Where a Bash Script is Located | Hello everyone! When you're working with Bash scripts, it's often useful to know the directory where... | 0 | 2024-07-02T10:03:33 | https://devdojo.com/bobbyiliev/how-to-get-the-directory-where-a-bash-script-is-located | bash, linux, beginners, automation | Hello everyone!
When you're working with Bash scripts, it's often useful to know the directory where the script itself resides. This can be essential for referencing relative paths, ensuring the script works correctly regardless of where it is executed from. Let’s dive into how you can achieve this.
### Method 1: Using `dirname` and `$0`
The simplest way to get the directory of the script is to use the `dirname` command in combination with `$0`. Here's a step-by-step explanation:
1. **`$0`**: This special variable contains the path used to invoke the script. It might be a relative path, an absolute path, or just the script name.
2. **`dirname`**: This command removes the last component from a path, effectively giving you the directory part.
Here’s a small snippet to demonstrate this:
```bash
#!/bin/bash
# Get the directory of the script
SCRIPT_DIR=$(dirname "$0")
echo "The script is located in: $SCRIPT_DIR"
```
### Method 2: Resolving the Full Path
If you need the absolute path, especially if the script is run from a relative path, you can combine `dirname` with `readlink`:
```bash
#!/bin/bash
# Resolve the full path of the script
SCRIPT_DIR=$(dirname "$(readlink -f "$0")")
echo "The script is located in: $SCRIPT_DIR"
```
### Breaking Down the Command
- **`readlink -f "$0"`**: This command follows all symlinks and returns the absolute path of the script.
- **`dirname "$(readlink -f "$0")"`**: This gives the absolute directory path of the script.
### Method 3: Handling Edge Cases
For more complex scenarios, such as when the script is sourced or if it's part of a symlink chain, you might need additional logic to ensure you always get the correct directory.
Here’s an advanced version that handles more edge cases:
```bash
#!/bin/bash
# Function to resolve the script path
get_script_dir() {
local SOURCE=$0
while [ -h "$SOURCE" ]; do # Resolve $SOURCE until the file is no longer a symlink
DIR=$(cd -P "$(dirname "$SOURCE")" && pwd)
SOURCE=$(readlink "$SOURCE")
[[ $SOURCE != /* ]] && SOURCE=$DIR/$SOURCE # If $SOURCE was a relative symlink, resolve it relative to the symlink base directory
done
DIR=$(cd -P "$(dirname "$SOURCE")" && pwd)
echo "$DIR"
}
# Get the directory
SCRIPT_DIR=$(get_script_dir)
echo "The script is located in: $SCRIPT_DIR"
```
### Conclusion
Getting the directory of the Bash script from within the script itself is a common requirement and can be easily achieved using `dirname` and `$0`. For more robust solutions, combining these with `readlink` can ensure you handle absolute paths and symlinks correctly. By incorporating these methods into your scripts, you can make them more portable and easier to manage.
If you’re interested in learning more about Bash scripting, be sure to check out my [free eBook on Bash scripting](https://github.com/bobbyiliev/introduction-to-bash-scripting). It's packed with useful information and examples to help you become a Bash scripting pro!
Happy scripting! | bobbyiliev |
1,908,713 | How to a loader with Tailwind CSS | Today we are going to create a super simple animated loader with only Tailwind CSS. Why use a... | 0 | 2024-07-02T10:02:50 | https://dev.to/mike_andreuzza/how-to-create-a-dark-mode-toggle-with-tailwind-css-and-javascript-fd3 | tailwindcss, tutorial | Today we are going to create a super simple animated loader with only Tailwind CSS.
Why use a loader?
A loader is a visual element that indicates that something is happening. It can be used to indicate that a page is loading, a form is being submitted, or any other action that requires the user’s attention.
[See it live and get the code](https://lexingtonthemes.com/tutorials/how-tocreate-an-animated-loader-with-tailwind-css/) | mike_andreuzza |
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