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1,879,417
Looking for best gaming monetization platform?
"Struggling to find the right platform for gaming monetization and mobile game advertising? Look no...
0
2024-06-06T16:18:05
https://dev.to/claywinston/looking-for-best-gaming-monetization-platform-fn1
gamedev, gamemonetization, games, mobilegames
"Struggling to find the right platform for [gaming monetization](https://medium.com/@adreeshelk/learn-how-to-elevate-your-day-with-the-latest-games-on-nostra-550e9c88a5e2?utm_source=referral&utm_medium=Medium&utm_campaign=Nostra) and [mobile game advertising?](https://nostra.gg/articles/Lock-Screen-Games-Are-a-Game-Changer-for-Gaming-Developers.html?utm_source=referral&utm_medium=article&utm_campaign=Nostra) Look no further than this platform! The best game platform, boasts over 200 million gamers across India & Southeast Asia, offering a massive audience hungry for your games. This platform, the leading mobile gaming platform in India and Southeast Asia, offers a powerful solution for game developers seeking successful gaming monetization. In the end, there's no one-size-fits-all answer, but here are some popular methods that this platform uses to prioritize user experience: Here's why this platform is the best game platform to leverage mobile game advertising: Massive Reach: Access millions of highly engaged players across India, Japan, and Indonesia, with rapidly growing user base exceeding 200 million monthly active users. Seamless Monetization Integration: Integrates seamlessly with your existing gaming monetization tools, allowing you to leverage rewarded video ads, and more, without disrupting the user experience. Targeted Advertising: Our platform uses advanced algorithms to deliver targeted ads that resonate with players, maximizing click-through rates and revenue generation. Simplified Integration: The platform SDK is easy to integrate, saving you development time and resources. Join platform, the best game platform, and unlock a world of engaged players, effective advertising, and successful gaming monetization. Visit our developer page to learn more and get started today!"
claywinston
1,879,414
TRUSTED CRYPTOCURRENCY RECOVERY EXPERT FRANCISCO HACK
I just had to share my incredible experience with Francisco Company. So, picture this: I was in a...
0
2024-06-06T16:15:49
https://dev.to/lucy_wilson_2759c23b02f12/trusted-cryptocurrency-recovery-expert-francisco-hack-47h7
I just had to share my incredible experience with Francisco Company. So, picture this: I was in a total panic when I realized I couldn't access my bitcoin wallet. I thought I had lost all my hard-earned funds forever. I had saved it all up for my only nephew since his graduation was around the corner to buy him a gift. But then, I stumbled upon Francisco Hack Company. I reached out to them, feeling a mix of skepticism and hope. They assured me that they could legally trace and recover my lost bitcoin, and boy, did they deliver! The team at Francisco Hack worked their magic, using their expertise to track down my lost funds. It was like watching a detective movie unfold before my eyes. I was amazed by their dedication and determination. After a nerve-wracking wait, I received the most incredible news - they had successfully retrieved my lost bitcoin! I couldn't believe my luck. Francisco Company had truly saved the day! Their professionalism and transparency throughout the process were top-notch. They kept me informed every step of the way, patiently explaining the intricacies of the recovery process. If you ever find yourself in a similar situation, don't hesitate to reach out to Francisco Company. They are the real deal when it comes to legally recovering lost assets. Trust me, they'll go above and beyond to help you out. A huge shoutout to Francisco Hack for their exceptional work. They turned my despair into relief and gave me back my peace of mind. I can't thank them enough. EMAIL: FRANCISCOHACK@QUALITYSERVICE.COM Telegram @Franciscohack WhatsApp +44-75-61-16-90-43
lucy_wilson_2759c23b02f12
1,879,413
Codepen editor (updated)
Check out this Pen I updated! Try to code in this!
0
2024-06-06T16:15:43
https://dev.to/tidycoder/codepen-editor-updated-n0a
codepen, html, css, javascript
Check out this Pen I updated! Try to code in this! {% codepen https://codepen.io/TidyCoder/pen/abrZzxa %}
tidycoder
1,879,412
Technology helps me with my studies on geopolitics
You know that feeling of being lost in a map, not really knowing where one country begins and another...
0
2024-06-06T16:15:40
https://dev.to/outofyourcomfortzone/technology-helps-me-with-my-studies-on-geopolitics-2cnb
You know that feeling of being lost in a map, not really knowing where one country begins and another ends? Yeah, I’ve been there too. But let me tell you something: technology is here to save the day – literally, when it comes to geopolitics. First of all, **Google Earth**. My friend, if you haven’t used it to study geopolitics yet, you’re missing out! With it, you can travel the world without leaving your spot, explore borders, understand territorial conflicts, and see that mountain everyone wants because it’s strategic. And the best part: it’s all incredibly precise. Now, think about **social media**. Do you think they’re just for posting food pics? Not at all! Twitter, for example, is a sea of real-time information. By following the right profiles, you can keep up with breaking news on any crisis, revolution, or international agreement. Plus, you get some memes to lighten things up between serious news updates. And then there are **news apps**, right? Flipboard, Feedly, and even Google News. They let you customize your reading experience, choosing the topics you’re most interested in. This way, you can create your own newspaper, focused on the areas of the world and geopolitical themes you want to understand better. It makes staying updated much easier without having to hunt for news story by story. Moreover, there are many accurate and highly informative [**news websites** about geopolitics](https://atlas-report.com/top-geopolitics-news-and-analysis-sources-for-informed-insights/). Another thing that helps me a lot is **podcasts and YouTube videos**. There are so many great people talking about geopolitics in an easy-to-understand way. That boring bus ride? Turn it into a course on the rise of China or the challenges of the European Union. This way, you keep getting sharper without even realizing it. And, of course, we can’t forget **online courses**. Professors from renowned universities, interactive maps, quizzes – all right there, just a click away. To sum it up, if you have a smartphone, tablet, or computer and an internet connection, you have a global classroom in the palm of your hand. Technology takes geopolitics out of dusty books and brings it into our reality in a practical and even fun way. And, let’s be honest, who doesn’t like learning while scrolling on their phone, right?
outofyourcomfortzone
1,879,410
Buy Negative Google Reviews
https://dmhelpshop.com/product/buy-negative-google-reviews/ Buy Negative Google Reviews Negative...
0
2024-06-06T16:13:06
https://dev.to/dylangilbert07625/buy-negative-google-reviews-4mp4
webdev, javascript, beginners, programming
ERROR: type should be string, got "https://dmhelpshop.com/product/buy-negative-google-reviews/\n![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/75uy2sx8s9gkh55cec57.png)\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. If you are considering purchasing negative Google reviews from dmhelpshop.com, we encourage you to reconsider and instead focus on providing exceptional products and services to ensure positive feedback and sustainable success.\n\nWhy Buy Negative Google Reviews from dmhelpshop\nWe take pride in our fully qualified, hardworking, and experienced team, who are committed to providing quality and safe services that meet all your needs. 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These reviews convey customer demands and opinions, and ratings are assigned based on the quality of the products or services and the overall user experience. Google serves as an excellent platform for customers to leave reviews since the majority of users engage with it organically. When you purchase Buy Google 5 Star Reviews, you have the potential to influence a large number of people either positively or negatively. Positive reviews can attract customers to purchase your products, while negative reviews can deter potential customers.\n\nIf you choose to Buy Google 5 Star Reviews, people will be more inclined to consider your products. However, it is important to recognize that reviews can have both positive and negative impacts on your business. Therefore, take the time to determine which type of reviews you wish to acquire. Our experience indicates that purchasing Buy Google 5 Star Reviews can engage and connect you with a wide audience. 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dylangilbert07625
1,879,409
Introducing Basic Utility Belt: Your Essential Toolkit for Common Programming Tasks
Overview Basic Utility Belt is a versatile collection of essential utility functions...
0
2024-06-06T16:10:30
https://dev.to/nika_jobava_b511c42e78153/introducing-basic-utility-belt-your-essential-toolkit-for-common-programming-tasks-18of
javascript, webdev, programming, npm
## Overview **Basic Utility Belt** is a versatile collection of essential utility functions designed to simplify a wide range of common programming tasks. Whether you need to manipulate dates, perform arithmetic operations, or process strings, this toolkit has you covered. Enhance your development workflow with these reliable and easy-to-use functions, all in one convenient package. [Visit Basic Utility Belt on npm](https://www.npmjs.com/package/basic-utility-belt) ## Who is it for? **Basic Utility Belt** is designed for developers of all levels who need a reliable set of utility functions to streamline their coding tasks. Whether you're a beginner just starting out or an experienced developer looking for a comprehensive toolkit, this module offers a wide range of functionalities that can assist you in everyday programming scenarios. Its easy-to-use design and lack of dependencies make it a great addition to any project. ## Main Features and Functionalities **The Basic Utility Belt** includes a variety of utility functions across several categories: - Date Manipulations: Simplify date calculations, formatting, and parsing. - Number Operations: Perform arithmetic operations and validations. - String Processing: Handle string manipulations such as trimming, casing, and formatting. - Array Manipulations: Manage and transform arrays with ease. - Regex Validations: Validate and match strings using regular expressions. - The toolkit is continually evolving, with plans to add even more utility functions to cover a broader range of use cases. ## Installation Getting started with **Basic Utility Belt** is simple. There are no prerequisites or dependencies, making the installation process straightforward. To install the module, use the following npm command: `npm install basic-utility-belt` ## How to Use For detailed usage instructions and examples, please refer to the README on the npm package page. ## Feedback The **Basic Utility Belt** is an ongoing project, and your feedback is invaluable. If you have suggestions for new features, improvements, or bug fixes, please feel free to open an issue or submit a pull request on the [GitHub repository](https://github.com/nika-jobava481/basic-utility-belt). ## About the Author This module is developed and maintained by me, **Nika Jobava**. You can follow my work on [github](https://github.com/nika-jobava481). ## Support the Project If you find **Basic Utility Belt** useful, please consider starring the repository on GitHub and leaving a review. Your support helps drive the development of new features and improvements.
nika_jobava_b511c42e78153
1,879,407
Western Cowboy Boots: A Timeless Fashion Staple
Western cowboy boots have long been more than just functional footwear; they are a symbol of rugged...
0
2024-06-06T16:10:04
https://dev.to/harry0098/western-cowboy-boots-a-timeless-fashion-staple-17hh
western, cowboy, boots, mens
Western cowboy boots have long been more than just functional footwear; they are a symbol of rugged individuality and timeless style. Originating from the practical needs of cowboys in the American West, these boots have transcended their utilitarian roots to become a fashion icon embraced worldwide. In the UK, western cowboy boots have carved out a niche in both rural and urban settings, blending traditional craftsmanship with modern fashion sensibilities. Whether paired with jeans for a casual look or incorporated into high-fashion ensembles, **[western cowboy boots](https://mencowboyboots.co.uk/)** continue to make a bold statement, representing a perfect fusion of heritage and contemporary style.
harry0098
1,879,405
Sustainable Practices and Their Influence on the Insulating Glass Window Market
The Insulating Glass Window industry involves the manufacturing and installation of windows that are...
0
2024-06-06T16:08:46
https://dev.to/aryanbo91040102/sustainable-practices-and-their-influence-on-the-insulating-glass-window-market-20gp
news
The Insulating Glass Window industry involves the manufacturing and installation of windows that are designed to improve energy efficiency by reducing heat loss or gain. Insulating glass windows typically consist of two or more panes of glass separated by a space filled with gas or air, which acts as an insulator. The insulating glass window market size was USD 12.0 billion in 2020 and is projected to reach USD 17.2 billion by 2026; it is expected to grow at a CAGR of 6.1% from 2021 to 2026. The insulating glass window market demand in 2023-24, it is difficult to provide a specific forecast as it depends on a variety of factors such as economic conditions, government regulations, and consumer preferences. However, there is a growing trend towards energy efficiency and sustainable building practices, which is likely to increase the demand for insulating glass windows in the coming years. Additionally, with the increasing emphasis on reducing carbon emissions and combating climate change, there may be an increased demand for energy-efficient buildings, which could also contribute to the growth of the insulating glass window industry. Insulating Glass Window Market Key Players The key market players include AGC Inc. (Japan), Central Glass Co., Ltd. (Japan), Saint-Gobain (France), Dymax (US), Glaston Corporation (Finland), Guardian Glass (US), H.B. Fuller Company (US), Henkel AG & Co. KGaA (Germany), Internorm (Austria), Scheuten (Netherlands), Nippon Sheet Glass Co., Ltd. (Japan), Sika AG (Switzerland), 3M (US), Viracon (US). These players have adopted product launches, acquisitions, expansions, agreements, contracts, partnerships, investments, collaborations, and divestments as their growth strategies. **Download PDF Brochure: [https://www.marketsandmarkets.com/pdfdownloadNew.asp?id=36258309](https://www.marketsandmarkets.com/pdfdownloadNew.asp?id=36258309) ** “By product type, the gas-filled insulating glass segment is projected to grow at the highest CAGR during the forecast period” The gas-filled insulating glass segment in the Insulating Glass Window industry refers to windows that use a gas, such as argon or krypton, to fill the space between the glass panes instead of air. This gas acts as a better insulator than air and helps to improve the overall energy efficiency of the window. Gas-filled insulating glass windows are also typically more effective at reducing noise transmission. The demand for gas-filled insulating glass windows is expected to grow in the coming years due to the increasing focus on energy efficiency and sustainability. These windows offer significant energy savings, particularly in colder climates, by reducing heat loss through the window. They can also provide increased comfort by reducing drafts and cold spots near windows. In addition, gas-filled insulating glass windows can provide improved sound insulation, making them popular in noisy urban areas. “By sealant type, silicone dominated the insulating glass window market” Silicone sealants are currently the most commonly used sealant type in the insulating glass window market. Silicone sealants offer several advantages over other types of sealants, such as polyurethane and polysulfide. Silicone sealants have excellent weathering and UV resistance, which makes them ideal for use in outdoor applications like insulating glass windows. They also have high tensile strength and good adhesion to glass and metal surfaces. In addition to their technical properties, silicone sealants are also easy to use and offer good workability. They can be applied quickly and easily, and they cure rapidly to form a strong, flexible bond. **Get Sample Copy of this Report: [https://www.marketsandmarkets.com/requestsampleNew.asp?id=36258309](https://www.marketsandmarkets.com/requestsampleNew.asp?id=36258309) ** “Middle East & Africa is projected to grow at the highest CAGR during the forecast period” The Middle East & Africa is projected to grow at the highest CAGR (Compound Annual Growth Rate) during the forecast period for the Insulating Glass Window industry, although this would depend on various factors such as economic and political conditions, construction trends, and demand for energy-efficient buildings in the region. In recent years, there has been a growing interest in sustainable building practices in the Middle East & Africa, driven in part by government initiatives to reduce energy consumption and carbon emissions. This has resulted in an increased demand for energy-efficient products, including insulating glass windows, in the region. In addition, rapid urbanization and increasing population growth in the region are driving demand for new buildings and infrastructure. This presents an opportunity for the insulating glass window industry to grow, as building owners and developers seek to reduce energy costs and improve the comfort and performance of their buildings.
aryanbo91040102
1,879,404
ChatGPT 4o with new Era of Technology
Copilot for Surface: Your Intelligent Productivity Assistant Overview: Copilot for Surface is an...
0
2024-06-06T16:07:25
https://dev.to/adeel_khan_91d3921334f859/chatgpt-4o-with-new-era-of-technology-4jld
chatgpt, chatgpt4o, ai, webdev
Copilot for Surface: Your Intelligent Productivity Assistant Overview: Copilot for Surface is an advanced AI-driven productivity tool designed to enhance the user experience on Microsoft Surface devices. Integrating seamlessly with Surface’s hardware capabilities, Copilot leverages AI to assist users in a variety of tasks, making their workflows more efficient and intuitive. Key Features: Smart Assistance: Provides contextual help, suggestions, and automation based on user activity, reducing the time spent on repetitive tasks. Integrated Learning: Adapts to user preferences and learns from interactions to offer personalized assistance. Natural Language Processing: Enables users to interact with their device using natural language commands, making navigation and task management more intuitive. Enhanced Productivity: Automates routine tasks such as email management, scheduling, and data entry, freeing up time for more critical activities. Collaboration Tools: Facilitates better teamwork with real-time document collaboration, intelligent meeting summaries, and task delegation. Benefits: Efficiency: Streamlines workflows and reduces task completion time. User-Friendly: Intuitive interface that requires minimal learning curve. Personalization: Customizes assistance based on individual user habits and preferences. Seamless Integration: Works harmoniously with existing Microsoft Office apps and other productivity tools. Target Audience: Ideal for professionals, students, and anyone looking to boost their productivity and make the most out of their Surface device.
adeel_khan_91d3921334f859
1,879,403
Leveraging Caching for a Lightning Fast User Experience
Today, we're delving into caching, a powerful tool for building fast and reliable systems. Caching is...
0
2024-06-06T16:07:02
https://dev.to/a_j_55adf9a67ce7a35df1d9e/leveraging-caching-for-a-lightning-fast-user-experience-23jn
caching, webapp, userexperience, webdev
Today, we're delving into caching, a powerful tool for building fast and reliable systems. Caching is all about storing data temporarily to access it quickly when needed. In this article, we'll focus on backend caching, which can help you create efficient software. In this article, we'll cover: **What is Caching?** We'll explain how caching works and why it's important for speeding up data access. **Benefits of Caching:** Discover how caching can boost speed, improve user experience, and save costs by reducing server load. **Caching Patterns:** Learn about different ways to use caching and choose the best approach for your needs. **Caching Best Practices:** Find out how to keep your cached data up-to-date and manage cache capacity effectively. **When Not To Cache:** Understand when caching might not be the best solution and could even harm performance. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4dwf3v1j0rcfy8n5x9r8.png) ## What Is Caching? To build a fast and scalable application, it's essential to remove bottlenecks and make your system more efficient. Databases can often slow down performance due to their storage and processing requirements. That's where caching comes in. A cache is a temporary storage solution that stores data temporarily for quick access. It uses high-speed memory storage and optimized data structures to speed up operations. Redis and Memcached are popular distributed caching systems that you might already be familiar with. ## Benefits of Caching The main advantage of caching is speed. Retrieving data from a cache is much faster than fetching it from a database, thanks to the efficient data structures and memory storage used. Caching also reduces the load on your database, freeing up resources and improving performance. This leads to a better user experience and potential cost savings. By reducing the need to constantly access the database, caching can make your application more responsive and efficient. While caching can help save costs by optimizing data access, it's essential to have a backup plan in case your cache system fails and puts extra strain on your database. ## Cache Strategies Understanding caching power is just the start; knowing how to use it best is key. Here, we'll look at two main patterns: Writing Patterns and Cache Miss Patterns. These patterns give ways to manage cache updates and handle when needed data isn't in the cache yet. ## Writing Patterns Writing patterns show how your app interacts with the cache and database. Let's explore three usual strategies: Write-back, Write-through, and Write-around. Each has its own benefits and drawbacks. ### Write-Back **How it works:** Your app stores data in the cache first, then copies it to the database later via a background process. Write-back caching, also called write-behind caching, delays writing data to the database until necessary. When an app updates data, the change is first stored in the cache and then written to the database at a later time. This boosts performance by minimizing direct database operations and allows for grouping write actions. However, there's a risk of data loss if the cache fails before data is saved in the database. This method is ideal for situations with frequent write actions and where a slight delay in data storage is acceptable. **Best for:** Apps where speed is crucial and some data inconsistency is okay, like analytics apps. Write-back caching is good for applications that need lots of writes and can handle some delay in data consistency. For example, logging systems, data collection apps, and batch processing systems. These apps benefit from less load on the database and better performance by grouping write operations. The small risk of data loss or delay is fine in these situations where immediate consistency isn't crucial. #### Advantages: - Quick reads: Data is always in the cache for fast access. - Speedy writes: App doesn't wait on the database, leading to faster response times. - Less strain on the database: Bulk writes reduce database load, potentially extending hardware life. #### Disadvantages: - Data loss risk: If the cache fails before saving to the database, data can be lost. Persistent storage can help but adds complexity. - Complexity: Middleware is needed to sync cache and database. - Possible high cache usage: All writes go to the cache first, leading to high storage use. ### Write-Through **How it works:** App writes data to both cache and database at the same time. Asynchronous writing can reduce wait time, letting app signal success before cache finishes. In write-through caching, any change to the cache is automatically saved to the database right away. This makes sure that the cache and the database always have the same information, giving a dependable and steady data status. While this method guarantees data accuracy, it may make writing data slower since each write needs a database update. Write-through caching is useful for apps that require consistent data and can manage the extra work of immediate database updates. **Best for:** Write-through caching is great for apps where data consistency and reliability are very important. For instance, financial services, e-commerce platforms, and real-time analytics systems. These apps need every write to show up right away in both the cache and the database, making sure users always get the most current info. The trade-off in performance is worth it for accurate and reliable data. #### Advantages: - Speedy reads: Data is always in the cache, skipping database reads. - Reliability: Writes confirmed only after saving in the database, ensuring data persists even after a crash. #### Disadvantages: - Slower writes: Overhead from waiting on database and cache writes. Asynchronous writing helps but still involves some wait time. - Possibly high cache usage: All data goes to the cache, even if not often accessed. ### Write-Around **How it works:** App writes data directly to the database, ignoring the cache. To fill the cache, it uses the cache-aside pattern. Write-around caching completely avoids the cache for writing, only updating the database. The cache is only utilized for reading, so new data is only cached when first read. This method helps prevent the cache from becoming cluttered with rarely accessed data, making it great for systems with sporadic usage patterns. However, it may cause a temporary slowdown when data is first read, as it must be retrieved from the database before being stored in the cache. Write-around is beneficial for applications with a high number of write operations and where improving reading performance is the main goal. **Best for:** Write-around caching is best for apps with lots of writes but where reads get a big boost from caching. For example, content management systems, user profiles, and apps with a mix of seldom used and often used data. This strategy keeps the cache efficient and clean of rarely used data, while still speeding up reads. It finds a balance between write speed and read efficiency, making it perfect for apps with uneven access patterns. #### Advantages: - Secure writes: Data goes straight to the database, guaranteeing consistency. - Efficient cache use: Only popular data is cached, saving memory. #### Disadvantages: Higher read latency (sometimes): If data isn't in the cache, app has to fetch it from the database, adding a round trip compared to constant caching policies. ## Cache Miss Patterns A cache miss happens when needed data isn't in the cache. Here are two common ways to handle this: - **Cache-Aside:** The app checks the cache and, if data isn't there, gets it from the database and updates the cache. The app manages the cache. This method is simple and widely used as it doesn't require external changes. - **Read-Through:** The app makes a request without knowing about the cache. A special system checks the cache and gets data from the database if needed, updating the cache invisibly. This pattern cuts app complexity but adds infrastructure complexity, offloading resource management to middleware. Overall, the write-around pattern with cache-aside is most used due to its simplicity. However, consider write-through if data will be used right after caching, offering slight read performance benefits. ## Caching Tips Let's explore some ways to use caching effectively to keep your data up-to-date and manage storage efficiently. - **Refreshing Cache:** When your database is updated, the cached data can become old. Having a good cache refreshing plan is important to avoid serving outdated data: - **Updating Cache:** Make sure to update or remove cached data when your database is updated. Techniques like write-through or write-back can handle this automatically, while write-around or cache-aside strategies may need manual removal of old data. This ensures your app always gets the latest information. - **Time To Live (TTL):** Set a time limit for data in the cache to be automatically deleted after a certain period. This helps clear out unnecessary data and prevents old data from being served if cache updating is missed. ## Cache Cleanup Strategies As your cache fills up, you need ways to decide which data to remove to make space for new information. Here are some common strategies: - **Removing Least Used Data (LRU):** Data that hasn't been accessed for a while is removed first under this policy. LRU is used in many situations. - **Removing Less Used Data (LFU):** Data that is accessed less often is removed according to this policy. To protect new data from being deleted right away, consider a warm-up period where new data is safe from removal. - **Other strategies** include FIFO (First-In, First-Out) and Random Removal, though they are less popular. When Not to Use Cache It's important to know when caching may not be helpful: - Low Usage: If your app has low traffic and good response times, caching may not be necessary. Introducing a cache can add complexity and should be considered when facing performance issues or expecting more traffic. - Lots of Writing: Caching is most effective when data is read often and updated rarely. In systems with frequent updates, caching could slow things down and hurt performance. ## Key Points For successful caching: - Assess the Need: Make sure your system benefits from caching for quicker responses. - Choose the Right Methods: Pick cache strategies that match how your data is used. - Keep Data Fresh: Use strong cache refreshing techniques to avoid old data being served. - Manage Cache Space: Use strategies like LRU to remove data when the cache is full. By following these guidelines, you can optimize your caching plan to boost app performance and make your users' experience better, lighten the load on your database, and keep your data accurate and up-to-date. Success with caching comes from smart planning and ongoing improvement. Implementing a caching plan can boost your applications' speed and efficiency, but it requires careful thought and execution. Make sure caching is right for your system, especially if it's read-heavy and needs quick responses. Choose caching patterns that match your data usage to get the most out of it. Have strong plans for keeping your cache updated and choose good strategies for managing storage space.
a_j_55adf9a67ce7a35df1d9e
1,879,402
Thesis Undergraduate and Graduate Thesis Consultancy
Thesis Undergraduate and Graduate Thesis Consultancy We are really following with curiosity what...
0
2024-06-06T16:04:19
https://dev.to/kalemtez/thesis-undergraduate-and-graduate-thesis-consultancy-558e
Thesis Undergraduate and Graduate Thesis Consultancy We are really following with curiosity what will happen regarding university education in the near future. We are following with curiosity where the numbers will go, especially considering that so many students receive undergraduate and graduate [thesis](https://www.kalemtezhazirlama.com/) consultancy and therefore study in these programs. Not so long ago, 10-15 years ago, there were so few people receiving master's degrees that they could almost be counted on the fingers. Nowadays, everyone you meet on the street or anywhere is receiving a master's degree. In short, interest in graduate programs is extremely high. As such, it determines the need for various consultancy support for students who need professional support in their education life for various reasons. For example, students may have a wide variety of demands regarding literature review or format-related regulations, especially statistical data analysis. So much so that in some cases, students may be asked to make impossible demands. In short, although the reasons vary, sometimes students need support. In this article, we will present information about the above-mentioned processes under separate headings below. For Which Departments Should The Graduation Thesis Be Written? (Tez hazırlama) CONTENTS Undergraduate and Graduate Thesis Supervision…………………………………………………………….. 1 CONTENTS……………………………………………………………………………………………….. 1 1. About Undergraduate Education……………………………………………………………………….. 2 2. About Master's Education……………………………………………………………. 2 2.1. Master's Programs with Thesis………………………………………………………. 3 2.2. Non-Thesis Master's Programs……………………………………………………. 3 3. About Doctoral Education……………………………………………………………………… 4 4. Professional Thesis Support and Undergraduate Thesis Consultancy…………………………………… 4 5. Master's Degree Thesis Supervision……………………………………………….. 5 1. About Undergraduate Education Students who want to attend four-year faculties after high school must definitely take central exams. This is definitely the most important information that can be said about undergraduate education. Even though two-year associate degree students have the right to pass directly without an exam, if you are going to continue to four-year programs, you definitely need to apply for the university entrance exam and get a successful score. Even though the name of this exam often varies, everyone in Turkey will understand what we mean. Another information that can be shared about undergraduate education is that students must graduate from this program in order to receive signature authorization. For example, if you graduate from civil engineering, you will have the authority corresponding to this title within the borders of the Republic of Turkey. However, if you study in a different department as an undergraduate and study civil engineering in a master's degree, you will not have a signature effect. This is why undergraduate education is extremely important. A mistake made here will directly affect your professional future. In order to avoid such situations, it is recommended that you choose professions that you believe are right for you as much as possible. Thesis Preparation from A to Z 2. About Master's Education After completing the four-year faculty education, those who request can continue postgraduate education. Among the important information that can be revealed about graduate education is the fact that there are thesis and non-thesis programs. It is known that people show extremely high levels of interest in these programs. We will examine the subject under two different headings related to graduate education. These will be examined separately below, with and without thesis. 2.1. Master's Programs with Thesis In the past years, education was mainly provided in master's programs with thesis. Students who had already taken the ALES exam generally preferred thesis programs and thus gained the right to continue their doctoral programs. However, today, it is known that many people do not continue their thesis programs and do not want to deal with the thesis writing process. The first step you will need to take is to complete the courses related to the thesis master's programs. If you fail any course, you will definitely not be able to proceed to the thesis writing stage. For this reason, if you drop courses from the first semester and the second semester, your university life will be extended by at least one year. Since there was a law regarding the maximum duration of education in the past years, if you continue this extension period for longer, you may face expulsion from school. In short, our suggestion is to write your master's thesis as soon as possible and graduate by getting undergraduate and graduate thesis consultancy, if necessary. Thesis preparation center 2.2. Non-Thesis Master's Programs The second category in postgraduate education is non-thesis master's programs. These types of programs have attracted a lot of attention in recent years. Especially people educated in numerical disciplines can easily enroll in non-thesis programs to improve their managerial skills. Since these programs are entered without the ALES exam, anyone who meets the necessary prerequisites can directly register. Especially state universities and foundation universities that provide secondary education have become frequently preferred because they offer wide opportunities to students. In order to graduate from non-thesis master's programs, you must write a master's term project. In fact, this academic study, which is essentially no different from a master's thesis, provides more concise information. 3. About Doctoral Education The first step of postgraduate education is a master's degree. If you have graduated from any program with or without thesis, you can start researching doctoral education and continue your education at the doctoral level. Although in recent years, those who enter non-thesis programs without taking the ALES exam do not have the right to a doctorate. For this reason, if you want to enroll in doctoral programs, you must study in a master's program with thesis. In addition, people who meet the pre-determined conditions in undergraduate programs can be directly accepted into doctoral programs. If you are in need at this point, it may be useful for you to research the prerequisites of the school you are considering applying to regarding the processes in question. 4. Professional Thesis Support and Undergraduate Thesis Consultancy In the upper headings where we briefly summarized the education life, it is now necessary to talk about professional thesis support and undergraduate thesis consultancy. Whatever the reason, some people cannot complete their academic work. Although in some cases, the processes that are not carried out are generally full of excuses, but we are not interested in the reasons. At this point, we have to produce the solutions needed by those who want to get support regarding undergraduate and graduate thesis consultancy. We carry out activities that will speed up your time, especially with services such as statistical data analysis, literature scanning or translation from foreign sources. If you want to get information about professional thesis support and undergraduate consultancy, you can contact the companies that provide services regarding the process. Or, if you have a spouse or friend nearby who understands these matters and has recently written his thesis, you can ask him to help you. Preparing a Thesis: Steps, Tips, and Review of the Process 5. Master's Degree Thesis Consultancy Ultimately, we tried to give you information on some issues you are curious about with this review publication, in which we tried to reveal what we know about undergraduate and graduate thesis consultancy. If you would like to get professional support for various reasons related to the above, you can contact businesses that operate on the subject. Apart from this, student forums and blogs on the website will help you obtain a lot of the information you need to answer the question of how to prepare a thesis. Believe me, even if you have no knowledge, the information you get from here can make a serious contribution to you. Additionally, your advisor assigned to you at the university can contribute to the process with you. Of course, if you choose the right advisor here. Since the issues related to consultant selection are a separate review article, we hope that you have chosen the right consultant and started the process with him. Because faculty advisors are more effective and guiding than anything else in the undergraduate and graduate thesis consultancy process. For this reason, you should definitely try to use the information you will obtain from the consultant. Take every word he says seriously. Do not do what your master's thesis says not to do, but look for ways to somehow take into account what you say to do. If you proceed as stated in the previous sections, you will need little or no additional support in terms of undergraduate and graduate thesis supervision. SOURCE: https://www.kalemtezhazirlama.com
kalemtez
1,879,400
Desert Roadies: The Wanderers of the Sands
Desert roadies, also known as desert nomads, are adventurous individuals who traverse the arid...
0
2024-06-06T16:01:38
https://dev.to/hifza_ansari_3d35ea326786/desert-roadies-the-wanderers-of-the-sands-3npn
beginners, react
[Desert roadies](https://www.desertroudies.com/blogs/), also known as desert nomads, are adventurous individuals who traverse the arid landscapes of the world's deserts. They embody the spirit of exploration and resilience, adapting to the harsh conditions of the desert environment while seeking freedom and adventure on the open road.
hifza_ansari_3d35ea326786
1,879,399
Buy Verified Paxful Account
https://dmhelpshop.com/product/buy-verified-paxful-account/ Buy Verified Paxful Account There are...
0
2024-06-06T16:01:10
https://dev.to/dylangilbert07625/buy-verified-paxful-account-2p77
webdev, javascript, beginners, programming
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dylangilbert07625
1,877,994
🌊 Beach Quest with Finley and Friends !
This is a submission for [Frontend Challenge...
0
2024-06-06T16:00:37
https://dev.to/everlygif/beach-quest-with-finley-and-friends--bmk
devchallenge, frontendchallenge, css, javascript
_This is a submission for [Frontend Challenge v24.04.17]((https://dev.to/challenges/frontend-2024-05-29), Glam Up My Markup: Beaches_ ## What I Built I developed **Beach Quest with Finley and Friends**, a visually stunning and interactive web app designed to showcase a list of beaches provided in the prompt. Being from a coastal city in India, I knew that static images wouldn't capture the true beauty of beaches, so I opted to use videos for the visuals. This led me to work closely with the **HTML5 Video element and API**. I envisioned the website as a **virtual tour**. To achieve this, I synchronized background videos with the corresponding beach descriptions. This inspired another idea: adding **tour guides** for each beach. That's where Finley and his friends come in—they guide users through the beaches and share their pro tips, making the website more informative. I built this website with **a strong focus on accessibility, ensuring it is user-friendly for everyone**. To enhance user experience, **I included a navigation menu for easy jumping between sections, a progress bar with previous and next buttons, a loader to handle dynamic video loading, and responsiveness for all devices.** Although I recommend visiting the website on a desktop to truly appreciate the visuals, it is also fully viewable on mobile devices. <!--<video controls><source src="https://github.com/everly-gif/everly-gif/assets/77877486/e043ffd0-e779-4d55-a0cd-d3691911bddb"></source></video>--> <!-- Tell us what you built and what you were looking to achieve. --> ## Demo <!-- Show us your project! You can directly embed an editor into this post (see the FAQ section from the challenge page) or you can share an image of your project and share a public link to the code.<video controls><source src="https://github.com/everly-gif/everly-gif/assets/77877486/e043ffd0-e779-4d55-a0cd-d3691911bddb"></source></video> --> Below, I have added screenshots of all the features I mentioned and provided the deployed URL and GitHub source code. ### Landing screen with Tour Guide and CTA ![Landing screen with Tour Guide and CTA](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/c3yqn2bil4j4sfwcwfxz.png) ### Intro Screen with Progress Bar ![Intro Screen with Progress Ba](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/8bp87f6s4up42fd22i7g.png) ### Beach Screen with Background Video ![Beach Screen with Background Video](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/sq0hz687lnucvcijqnpn.png) ### Accessibility Navigation Menu ![Accessibility Navigation Bar](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/grzongcnhxg9ecjpijmz.png) ### Responsiveness ![Mobile View](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/2raj1enirjlz9jm7kqyq.png) _Note: you'll only be able to see the loader if there is a delay in loading the video, if you have good internet speed, likely, you will not see it._ I have deployed the website on **GitHub Pages** : https://everly-gif.github.io/BeachQuest/ **Source Code** : https://github.com/everly-gif/BeachQuest ## Journey Building this wasn't as simple as I initially thought it would be. I faced numerous challenges throughout the process, especially since the rules strictly prohibited altering the markup directly. As a result, every interaction—from the tour guides and navigation bar to the buttons, loader, video element, video overlay and progress bar had to be added using pure JavaScript. Here below I write an overview of my journey. ### Setup My first challenge was to find freely available videos of the beaches listed in the prompt. After extensive internet searching, I discovered [Pexels.com](https://www.pexels.com/search/videos/beach/). I am incredibly grateful for this resource, as the freely available videos for most of the beaches allowed me to bring my vision to life. _(Thank you, Pexels, all video credits to the rightful owners!)_ Secondly, I needed a tour guide. I went through a lot of different character sets before I found Finley and friends. I found them on [freepik.com](https://www.freepik.com/)(credits to rightful owners). With this, I was all set to dive into logic! ### Development At first, I began by directly injecting the additional HTML elements needed through JavaScript with the necessary classes and attributes. I then also modified the existing markup through javascript with the necessary attributes. #### Progress Bar I used an event listener, `click`, to handle the previous and next functionality. I added a `data-index` attribute for easy looping between sections. Later, using the `linear-gradient` CSS property, I dynamically updated the bar color in JavaScript. #### Beaches, Background Videos, Tour Guides, and Speech Bubbles I maintained data in an array structure for easy looping. The previously injected `data-index` attribute facilitated easy retrieval of the index, allowing me to set the correct background video, tour guide, appropriate speech bubbles, and beach description for each view. I achieved this by toggling between the `display:none and block/flex` properties. #### Navigation Menu I extracted all the data from the markup and appended it to another separate div, `menu-items`. Since the navigation menu was a separate view from the existing markup, I gave each item a `data-slide` attribute to indicate which section to jump to when clicked. I achieved this by toggling between the `display: none` and `block/flex` properties. #### Responsiveness and Other Styling I wrote a substantial amount of CSS to center-align the text on top of the background videos. I used properties such as `position`, `z-index`, `keyframes` and `display` throughout the website. Focusing on user-friendliness, I wrote media queries to ensure that the website looks great on all devices. The videos I used are dimensioned to support desktop viewing, so for mobile, I used the `min-height` and `min-width` properties to avoid any white spaces. ### Deployment I was pretty happy with the development locally after working on it for quite a few days. It was time to take it to the next level! ![Excited](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/153cic4wskwljrfudf1q.gif) GIF creds : [Gifer](https://gifer.com/) I first faced the file too large issue. That is when I realized my videos were huge. Locally, I never had an issue, so I hadn't considered the file size. I needed to optimize them to be able to push to GitHub. I used [FreeConvert](https://www.freeconvert.com/video-compressor), an online video compressor tool that helped me to significantly reduce the video file size. I was then able to push my code and deploy it to GitHub Pages. Later, I faced the grey screen issue while navigating the website using the prev and next buttons. This was happening because the video was taking time to load and set. Again, locally I never faced this issue; it only occurred after deployment. However, this severely affected the user experience of the website, so I had to address it. After much internet surfing, I found video attributes such as `poster` that could contain a loading image/gif URL, which would be displayed before the video loads. But I wasn't really happy with what I was able to achieve with it. So the research continued. I came across event listeners `loadstart` and `canplaythrough`, which then simplified my issue. I decided to toggle between the `display: none` and `display: flex` properties based on these event listeners on a custom loader. I used a wave loader gif from [LottieFiles](https://app.lottiefiles.com/animation/d6b7aa5a-4106-407b-b9ec-d5be3079433d), centered it on a div with a custom background color, and used it as my loading screen. ![loader](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/nekx8a4bcvqb75tynw6w.png) ## What I learned and What I am proud of It was great to challenge myself to think outside the box and pick up a front-end challenge. It's been a good amount of time since I worked with plain JS, HTML, and CSS. So, this challenge was a nice re-brushup on those skills. I'm particularly proud that I was able to bring this vision to life despite the challenges I faced especially during deployment and finding assets. Websites like [StackOverflow](https://stackoverflow.com/) and [w3schools](https://www.w3schools.com/) were also a huge help in resolving my blockers. <!-- Tell us about your process, what you learned, anything you are particularly proud of, what you hope to do next, etc. --> <!-- Team Submissions: Please pick one member to publish the submission and credit teammates by listing their DEV usernames directly in the body of the post. --> <!-- We encourage you to consider adding a license for your code. --> <!-- Don't forget to add a cover image to your post (if you want). --> <!-- Thanks for participating! -->
everlygif
1,879,401
Historia de la BeamVM
Historia de la BeamVM. ¿Para qué es buena?
0
2024-06-06T16:00:00
https://dev.to/javascriptchile/historia-de-la-beamvm-2b5l
elixir, beam, erlang, chile
--- title: Historia de la BeamVM published: true description: Historia de la BeamVM. ¿Para qué es buena? tags: elixir, beam, erlang, chile cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/a3rql9nmmbwxnjejsypl.jpg published_at: 2024-06-06 16:00 +0000 --- ## ¿Qué es Erlang? _Erlang_ es un lenguaje de programación funcional. Esto quiere decir que se basa en los principios de funciones con transparencia referencial e inmutabilidad. La transparencia referencial quiere decir que una función con los mismos parámetros debería retornar el mismo resultado. La inmutabilidad quiere decir que no puedo alterar el valor de una variable una vez que se ha asignado, por ejemplo si digo que x es 5, no es lógico que también sea 6 (sería deshonesto). Sin embargo existen casos donde una función puede retornar otro resultado con los mismos parámetros (por ejemplo una función de la fecha actual). _Erlang_ usa un enfoque pragmático: Obedecer los principios de la programación funcional (inmutabilidad, transparencia referencial) y romperlos cuando aparecen conflictos del mundo real. Además del lenguaje de programación, _Erlang_ tiene todo un ecosistema de herramientas. En primer lugar se encuentra su máquina virtual (_BEAM VM_), la cual ejecuta código compilado con un _bytecode_ específico, muy similar a la _JVM_ de _Java_. Por lo que el código puede ser ejecutado en cualquier sistema para la cual la _BEAM VM_ sea compatible. También proporciona herramientas de desarrollo como compiladores, debuggers, herramientas para análisis de rendimiento y pruebas. El framework OTP, servidores web, generadores de analizadores de código fuente (parsers), una base de datos distribuida llamada _mnesia_, entre otras herramientas. La máquina virtual y sus bibliotecas permiten actualizar el código en caliente (hot reload), lo que significa cambiar el código durante la ejecución del programa sin interrupción del servicio y también permitir la ejecución del código de forma distribuida en varias computadoras, manejando los errores y fallos de una forma simple y poderosa. Todas estas características permiten una habilidad de _Erlang_ para la resiliencia frente a errores y organización del código en procesos y mensajes concurrentes. ## Origen de Erlang _Erlang_ comenzó como una biblioteca de _Prolog_, luego como un dialecto de _Prolog_, para finalmente ser un lenguaje de programación por si mismo. El objetivo fue resolver el problema de construir sistemas distribuidos robustos y confiables. Desarrollado originalmente en la empresa de telecomunicaciones _Ericsson_ para sus switch telefónicos. Desde un inicio se enfrentaron a desafíos de escala mundial como cientos de milllones de usuarios y condiciones de servicio muy estrictas. Fue liberado al público en 1998 como un proyecto _Open Source_. Hoy en día, según [Cisco](https://news.ycombinator.com/item?id=17218190), el 90% del tráfico de internet es orquestado por nodos programados en _Erlang_. {% twitter https://twitter.com/guieevc/status/1002494428748140544 %} _Erlang_ y la _BEAM VM_ han evolucionado a lo largo de más de 30 años para otros casos de uso como la robótica, machine learning, aplicaciones web, entre otros. Uno de sus creadores principales _Joe Armstrong_ lo detalla de la [siguiente forma](https://dl.acm.org/doi/abs/10.1145/1238844.1238850): Erlang fue diseñado para escribir programas concurrentes que se ejecutasen eternamente. Erlang usa procesos concurrentes para estructurar el programa. Estos procesos no tienen memoria compartida y se comunican por paso de mensajes asíncronos. Los procesos de Erlang son ligeros y pertenecen al lenguaje, no al sistema operativo. Erlang tiene mecanismos que permiten que los programas cambien on-the-fly (en vivo) así, esos programas pueden evolucionar y cambiar sin detener su ejecución. Estos mecanismos simplifican la construcción de software implementando sistemas non-stop (que no se detienen). El desarrollo inicial de Erlang tuvo lugar en 1986 en el Laboratorio de Computación de Ericsson. Erlang fue diseñado con un objetivo específico en mente: proporcionar una mejor forma de programar aplicaciones de telefonía. En ese momento, las aplicaciones de telefonía eran atípicas del tipo de problemas que podían resolver los lenguajes de programación convencionales. Las aplicaciones de telefonía son, por su naturaleza, altamente concurrentes: un simple switch debe manejar decenas o cientos de miles de transacciones simultáneas. Tales transacciones son intrínsecamente distribuidas y el software se espera que sea altamente tolerante a fallos. Cuando el software que controla los teléfonos falla, sale en los periódicos, algo que no ocurre cuando fallan las aplicaciones de escritorio. El software de telefonía debe también cambiar on-the-fly, esto es, sin perder el servicio mientras se realiza una actualización del código. El software de telefonía debe también operar en tiempo real, con ajustados requisitos de tiempo para algunas operaciones, y más relajado tiempo en otras clases de operaciones. {% youtube https://www.youtube.com/watch?v=BXmOlCy0oBM %} ## ¿Por qué Erlang es Bueno? _Joe Armstrong_, fijó los requisitos de _Erlang_ en solucionar los problemas de un entorno altamente concurrente, que no puede permitirse caer y que debe de actualizarse sin pérdida de servicio. Actualmente, esta definición calza con casi la mayor parte de servicios en Internet. Sin embargo pensar de que _Erlang_ solamente es para casos de uso de procesos y mensajes livianos y concurrentes es insuficiente para describirlo. En su [tésis de doctorado](http://kth.diva-portal.org/smash/record.jsf?pid=diva2%3A9492&dswid=9576) _Joe Armstrong_ detalla componentes genéricos llamados "behaviours" (comportamientos) en _Erlang_. Estos "behaviours" son similares a las interfaces en otros lenguajes de programación y permiten el polimorfismo, es decir, que los programas puedan trabajar con múltiples formas. _Joe Armstrong_ detalló seis distintos _behaviours_ `gen_server`, `gen_event`, `gen_fsm` (`gen_statem`), `supervisor`, `application` y `release`. Definió que estos seis _behaviours_ eran suficientes para crear sistemas distribuidos confiables y robustos. Los _behaviours_ son escritos por expertos y están basados en años de experiencia y representan las "mejores prácticas". Permiten que los programadores de la aplicación se enfoquen en la "lógica de negocios", mientras que la infraestructura es proporcionada automáticamente por el _behaviour_. El código es escrito de forma secuencial y toda la concurrencia es realizada por el _behaviour_ "por debajo". Esto facilita que nuevos miembros del equipo aprendan la lógica de negocios, ya que es secuencial y es similar a cómo operan otros lenguajes de programación. La siguiente lista es una breve descripción de cada _behaviour_. * `gen_server`: Un servidor genérico. Permite crear un servicio que puede recibir llamadas. * `gen_event`: Un gestor de eventos. Permite enviar mensajes cuando ocurren eventos definidos. * `gen_statem`: Una máquina de estados, anteriormente conocida como `gen_fsm`. Permite validar estados de los datos. * `supervisor`: Un supervisor es un proceso cuya tarea es que otros procesos (hijos) esten vivos y realizando su labor. Con múltiples estrategias para reiniciarlos si estos fallan. Un supervisor puede ser padre de otros supervisores. * `application`: Una aplicación es un conjunto de componentes `gen_server`, `gen_event`, `gen_statem` y `supervisor` utilizados para un fin. Se le llama "árbol de supervisión" (supervision tree). * `release`: Un sistema puede contener una o múltiples `application`, lo que se considera un `release`. Además proporciona herramientas para actualizar el código y volver a un estado anterior (_rollback_) si la actualización falla. Si se tiene en cuenta que un supervisor puede supervisar a otros supervisores (los cuales pueden estar ejecutándose en otro computador), nos da una idea de lo poderoso que pueden ser los _behaviour_. Se podría hacer un paralelo con _Kubernetes_, pero la principal diferencia es que estos _behaviours_ son ejecutados a nivel del proceso/hilo a diferencia de _Kubernetes_ que se ejecuta a nivel del contenedor Docker. Las ideas de los supervisores y las estrategias de reinicio vienen de la observación de que usualmente es más simple reiniciar un servicio para solucionar un problema. ¿Has probado apagar y prender un equipo para solucionar un problema?. Esto se puede explicar con un ejemplo: Si estoy siguiendo la ruta de un mapa y me pierdo, es más simple partir del punto inicial que desde donde me perdí para llegar a la meta, es decir, en vez de encontrar el error y repararlo sobre la marcha, es más rápido y correcto registrar el error y volver al inicio para intentarlo de nuevo. Saber que los procesos pueden fallar y serán reiniciados por un supervisor nos permite fallar temprano y rápido (Siguiendo las recomendaciones de [Jim Gray](https://en.wikipedia.org/wiki/Fail-fast_system)). Un proceso produce un resultado correcto según la especificación o envía una señal de fallo y se detiene su operación. "Let it crash!" (Déjalo caer) es una frase acuñada por _Joe Armstrong_ para denominar este comportamiento de "camino feliz", donde si ocurre algo fuera del "camino feliz", el proceso debe detenerse y no tratar de solucionar el problema sobre la marcha (potencialmente empeorando la situación), dejando que otro componente dentro del árbol de supervisión maneje el error. Los supervisores y la filosofía de "Let it Crash!" de _Erlang_ le permiten producir sistemas robustos y confiables. Se puede ejemplificar con la máquina _Ericsson AXD301_, la cual alcanzó nueve nueves (99.9999999%) de fiabilidad en sus sistemas. Para poner en perspectiva la fiabilidad de cinco nueves (99.999%) se considera bueno (5.26 minutos de servicio caido por año). En grandes compañias se estima que existe 1.6 horas de servicio caido por semana. Nueve nueves de fiabilidad es como un parpadeo al año de servicio caido (31.56 milisegundos al año). Si bien los nueve nueves fueron alcanzados en una situación específica y no hay claridad total de cómo se obtuvieron dichos datos, se puede afirmar que la tecnología de _Erlang_ da una fiabilidad y robustes muy grande. ## El modelo de Actores Se ha definido _Erlang_ y su ecosistema, pero para tener una noción más íntegra se debe explicar lo que es concurrencia. En muchos lugares se puede considerar concurrencia y paralelismo como el mismo concepto. En _Erlang_ son dos ideas separadas. La concurrencia se refiere a la idea de actores ejecutandose de forma independiente, pero no necesariamente al mismo tiempo. El paralelismo es tener actores independientes ejecutandose al mismo tiempo. Si lo vemos a nivel de procesador, concurrencia es que cada proceso tiene su tiempo de ejecución en un único procesador, similar a como funcionaban los sistemas antes de la existencia de múltiples núcleos en los procesadores. El paralelismo ha estado disponible desde el inicio de _Erlang_, simplemente era necesario un computador anexo y conectado al computador principal. En la actualidad los procesadores con múltiples núcleos permiten paralelismo en un único computador (en contextos industriales llegando a docenas de núcleos por procesador) y _Erlang_ permite aprovechar estas características completamente (desde aproximadamente el año 2009 con la implementación del [multiprocesamiento simétrico](https://es.wikipedia.org/wiki/Multiprocesamiento_sim%C3%A9trico)). Para lograr la concurrencia _Erlang_ utiliza el [modelo de actores](https://en.wikipedia.org/wiki/Actor_model). Cada actor es un proceso separado (función) y aislado en la máquina virtual y se comunican utilizando mensajes. Cada proceso (actor) es totalmente independiente y no comparte ninguna información con otros procesos, solamente utilizan mensajes entre ellos para comunicar datos. Son livianos (no son procesos del sistema operativo). Toda la comunicación es explícita, segura y con alta trazabilidad. Si un proceso falla, no afectará a los otros procesos, ya que son totalmente independientes entre si. Una cosa importante a considerar en relación a las habilidades de escalamiento de _Erlang_ y sus procesos ligeros. Es cierto que pueden tener cientos de miles de procesos existentes al mismo tiempo, pero no significa abusar de ellos. Por ejemplo crear un videojuego de disparos en los que cada bala sea su propio actor es algo excesivo. Ya que hay un pequeño costo en enviar mensajes entre actores, si se dividen las tareas demasiado puede incluso perjudicar el rendimiento. Se puede pensar de que la programación paralela es directamente proporcional a la cantidad de núcleos de un procesador, lo que se conoce como escalamiento lineal. Pero es importante recordar de que no existe algo perfecto y libre de costos asociados. El paralelismo no es la respuesta a cada problema, en algunos casos incluso puede afectar la velocidad de la aplicación, por ejemplo cuando existen tareas redundantes o el código es 100% secuencial pero intenta utilizar procesos paralelos. Un programa en paralelo va tan rápido como su parte secuencial más lenta. Esto significa que usar paralelismo para todos los problemas no garantiza que sea más rápido. Simplemente es una herramienta que puede ser muy útil, pero no siempre es la adecuada. ## Conclusión Quizás se ha encontrado con una situación similar a la siguiente: Mi sistema es local y no necesito de las capacidades de concurrencia que _Erlang_ proporciona. Jamás llegaré a los niveles de exigencia en mis sistemas que justifiquen utilizar dichas capacidades. Se podría pensar de que al tener sistemas de nicho nunca tendremos la necesidad de usar las bondades de la _BEAM VM_. ¿Pero qué pasa si tenemos una cantidad de datos enorme que debe ser procesada?. Esto sucedió en una empresa donde debían migrar una base de datos de usuarios a un nuevo sistema. Se debían procesar las tablas y ajustarlas al formato del nuevo sistema, es decir, se debía crear un pequeño script ETL (Extract Transform Load) para extraer, transformar y cargar datos. En un inicio un programador que solamente conocía _Python_ intentó realizar la migración, pero debido a la cantidad de datos la operación tomaba más de una semana en completar. Luego la tarea pasó a un equipo que conocía _Elixir_ y la operación tardó menos de un día en ser completada, gracias a las bondades de concurrencia y paralelismo de la _Beam VM_. Se puede argumentar de que tal ves era inexperiencia en _Python_ o no se usaron las herramientas adecuadas en dicho lenguaje. Pero eso nos habla de que realizar concurrencia y paralelismo en otros lenguajes no es tan simple como en el ecosistema de _Erlang_. Si bien todas estas herramientas e ideas podrían ser implementadas y desarrolladas en otros lenguajes de programación y ecosistemas (y viceversa). No es una tarea sencilla y tampoco se contaría con más de 30 años de evolución funcionando en sistemas productivos de clase mundial. Por lo que la máquina virtual de _Erlang_ (_BEAM VM_) es una tecnología robusta, confiable y acertada para ser usada en las soluciones de software actuales. Se debe evaluar cada problema y seleccionar las herramientas adecuadas según su contexto. ## Referencias * https://altenwald.org/2009/09/02/la-historia-de-erlang/ * https://github.com/stevana/armstrong-distributed-systems/blob/main/docs/erlang-is-not-about.md * https://emanuelpeg.blogspot.com/2024/05/tipos-en-erlang.html * https://emanuelpeg.blogspot.com/2014/05/elixir.html * http://jlouisramblings.blogspot.com/2010/12/response-to-erlang-overhyped-or.html * https://learnyousomeerlang.com/the-hitchhikers-guide-to-concurrency * https://adabeat.com/fp/is-erlang-relevant-in-2024/ * https://www.reddit.com/r/programming/comments/erboq/a_response_to_erlang_overhyped_or_underestimated/ * https://adoptingerlang.org/ * https://michal.muskala.eu/post/why-i-stayed-with-elixir/ * https://railsware.com/blog/important-overhaul-elixir-did-to-erlang-to-become-appealing-web-development-tool/
clsource
1,878,356
But do you have a portfolio?
Hello! My name is Amanda Koster. I'm a former photojournalist and visual content creator who...
0
2024-06-06T15:59:29
https://dev.to/amandakoster/but-do-you-have-a-portfolio-bf3
reactnative, python, raspberrypi, brewpi
### Hello! My name is Amanda Koster. I'm a former photojournalist and visual content creator who transitioned to Software Engineering six years ago. --- After three years at T-Mobile, I was laid off in December 2023 along with thousands of others. From there, I worked at my friend's AI startup for a bit and am now looking for another role. I was happy to learn more about how AI works and code in tandem with our LLMs. I recently started looking for a new role and have been asked a few times for a portfolio. Unfortunately, everything I did in the last six years is behind a firewall and cannot be seen. However, my friend and I want to brew beer for fun. We were chatting about automation and I decided to build a temperature controller using Raspberry Pi and BrewPi. BrewPi is an open-source codebase written in Python specifically for home brewing. We are starting with a Raspberry Pi 4 to get that running. From there I will install the thermometer. Eventually, this will live on a React Native app so we can monitor the temperature anywhere. Normally I would write this app as a PWA as to view it on any screen. Instead, I chose React Native vs. writing a Progressive Web App (PWA) to learn the latest version of React Native. I wrote a React Native app in coding school, but the framework has changed quite a bit. A software engineering friend of mine mentioned blogging about various software projects over the last year while looking for a job, a blog that would serve as a portfolio. This seemed like a good idea, welcome to my blogfolio.
amandakoster
1,879,395
Recent Searches & Sorting Hashes: How They are Connected
In one of the applications, that we are developing, we needed to implement the storing of 10 last...
0
2024-06-06T15:55:48
https://jetthoughts.com/blog/recent-searches-sorting-hashes-how-they-are-connected-ruby-rails/
ruby, rails, development
![Unsplash Photo: [Caspar Rubin](https://unsplash.com/@casparrubin)](https://raw.githubusercontent.com/jetthoughts/jetthoughts.github.io/master/static/assets/img/blog/recent-searches-sorting-hashes-how-they-are-connected-ruby-rails/file_0.jpeg) In one of the applications, that we are developing, we needed to implement the storing of 10 last user search requests. If they were simple text queries, that would be the end of the story. However, the issue turned out to be much more complicated, because we had to save search filters. In general, the search filter may be represented as a set of attributes, such as: ``` price_min: 100, price_max: 1000, color: 'red' ``` On one hand, with the help of all these attributes, we can simply create a model. But on the other hand, it is not a beneficial way, because there are quite a lot of filter attributes. Obviously, we should be able to add these attributes easily. I believe that the easiest way to do so is to keep them as a hash in the model in the serialized field. ```ruby # Our new model class SearchFilter belongs_to :user serialize :filter end # And association for it in users class User has_many :search_filters end ``` Since we need only the last 10 filters, we will add a callback that deletes old search filters after creating new ones. ```ruby after_create :trim_old_filters private def trim_old_filters user.search_filters.order(updated_at: :desc) .offset(10).destroy_all end ``` Also, as we would like to avoid the saving of identical filters, we will check the uniqueness of created filters. ```ruby validates :filter, uniqueness: { scope: :user_id } ``` But here we come across with one feature of this validation. It will allow to save identical filters, if attributes in them will be in a different order. That means, it will allow to store in the database both the hash { price_min: 100, color: 'red' }, and the hash { color: 'red', price_min: 100 }, although Ruby will return true when comparing for equality. This happens because before the validation ActiveRecord serializes the hash in a text string. In addition it makes a request to the database to retrieve the rows with the same value. ```ruby { price_min: 100, color: 'red' }.to_yaml #=> "---\n:price_min: 100\n:color: red\n" { color: 'red', price_min: 100 }.to_yaml #=> "---\n:color: red\n:price_min: 100\n" ``` As you can see, the lines are completely different. [Official documentation](http://www.ruby-doc.org/core-2.1.2/Hash.html) says: > Hashes enumerate their values in the order that the corresponding keys were inserted. Obviously, the hash serialization occurs in the same order in which values are added to the hash. As a result, we have to make all hashes enumerated in the given deterministic order before writing or checking for the presence in the base. In other words, we need to sort the hash is such a way that it is always enumerated in the alphanumeric order of its keys. So, there are many ways to do that. But it would be no fun just to pick any of them at random. Therefore, we decided to find the best way of doing that by two characteristics: speed and readability. To begin with, let’s talk about speed. We have created a hash: ```ruby KEYS_IN_HASH = 20 h = (1..KEYS_IN_HASH).to_a.shuffle.inject({}) { |hash, v| hash[v] = v.to_s; hash } ``` And benchmarked some ways of sorting it: ```ruby require 'benchmark' Benchmark.bm do |x| # sorting by #sort and converting to hash by ruby 2.0 method #to_h x.report(:sort) { h.sort.to_h } # sorting by #sort and converting to hash by creating hash from array of key/value arrays x.report(:old_sort) { Hash[h.sort] } # sorting by #sort_by and converting to hash by ruby 2.0 method #to_h x.report(:sort_by) { h.sort_by { |k, v| k }.to_h } # sorting by #sort_by and converting to hash by creating hash from array of key/value arrays x.report(:old_sort_by) { Hash[h.sort_by { |k, v| k }] } # creating new hash and set values in needed order x.report(:new_hash) { nh = {}; h.keys.each { |k| nh[k] = h[k] }; nh } # creating new hash and filling it while iterating by inject x.report(:new_hash_inj) { h.keys.inject({}) { |nh, k| nh[k] = h[k]; nh } } # removing and readding values to hash in the needed order x.report(:by_deleting!) { h.keys.sort.each { |k| h[k] = h.delete k }; h } end ``` And here are results which we have got: *For **20 **keys in hash:* ``` user system total real new_hash 0.000000 0.000000 0.000000 ( 0.000015) new_hash_inj 0.000000 0.000000 0.000000 ( 0.000015) by_deleting! 0.000000 0.000000 0.000000 ( 0.000017) sort_by 0.000000 0.000000 0.000000 ( 0.000024) old_sort 0.000000 0.000000 0.000000 ( 0.000038) old_sort_by 0.000000 0.000000 0.000000 ( 0.000042) sort 0.000000 0.000000 0.000000 ( 0.000050) ``` *And for **100 **items:* ``` user system total real new_hash 0.000000 0.000000 0.000000 ( 0.000046) new_hash_inj 0.000000 0.000000 0.000000 ( 0.000049) by_deleting! 0.000000 0.000000 0.000000 ( 0.000086) old_sort_by 0.000000 0.000000 0.000000 ( 0.000093) sort_by 0.000000 0.000000 0.000000 ( 0.000097) sort 0.000000 0.000000 0.000000 ( 0.000275) old_sort 0.000000 0.000000 0.000000 ( 0.000286) ``` *And for **100’000 **items:* ``` user system total real new_hash 0.090000 0.010000 0.100000 ( 0.094235) by_deleting! 0.120000 0.000000 0.120000 ( 0.126402) new_hash_inj 0.190000 0.000000 0.190000 ( 0.193813) sort_by 0.200000 0.010000 0.210000 ( 0.202221) old_sort_by 0.290000 0.000000 0.290000 ( 0.295042) sort 0.640000 0.010000 0.650000 ( 0.668481) old_sort 0.680000 0.000000 0.680000 ( 0.689761) ``` *And for **1’000’000 **records (by the way, if you have a hash with 1’000’000 keys, then you are doing something wrong):* ``` user system total real by_deleting! 1.620000 0.010000 1.630000 ( 1.656473) new_hash 1.790000 0.030000 1.820000 ( 1.885463) new_hash_inj 1.810000 0.020000 1.830000 ( 1.856330) old_sort_by 3.650000 0.030000 3.680000 ( 3.725720) sort_by 3.760000 0.040000 3.800000 ( 3.834567) old_sort 8.860000 0.150000 9.010000 ( 9.091311) sort 9.610000 0.120000 9.730000 ( 9.843766) ``` Consequently, we can see that creating a ‘new hash’ is the fastest way to sort a hash, less fast is ‘by deleting!’ (but it modifies an original array and this is not always allowed). And the shortest way (‘sort’)is also the longest one (from 3x for 20 items to 7x for 1’000’000 items). In my opinion, a ‘sort by’ method is a golden mean for sorting hashes. It is simple to understand what it does, it is not so time-consuming as a ‘sort’ method and not so difficult to read as ‘new hash’. Although, we should remember that dealing with big hashes is a bad practice. And if small ones are used, users can’t see any performance difference and ‘sort’ will work well too. So, when we decided how we will organize a hash value, let’s add this ordering before validation: ```ruby before_validation :sort_filter_attributes_by_its_names private def sort_filter_attributes_by_its_names self.filter = filter.sort_by { |k, v| k }.to_h end ``` The last thing to do is to write a method that will perform adding or updating of search filters: ```ruby def self.store(user, filter) search_filter = user.search_filters.create(filter: filter) return if search_filter.valid? user.search_filters.find_by_filter(search_filter).touch end ``` Further, use this method in the controller action that handles user’s searches. ```ruby class SearchController < ApplicationController after_action :store_filter def store_filter SearchFilter.store current_user, params[:filter] end end ``` Finally, we have implemented storing of user’s recent search filters and compared efficiency of sorting hashes in Ruby, used to enumerate in deterministic order.
jetthoughts_61
1,879,393
#846. Hand of Straights
https://leetcode.com/problems/hand-of-straights/?envType=daily-question&amp;envId=2024-06-06 /** ...
0
2024-06-06T15:52:16
https://dev.to/karleb/846-hand-of-straights-4eap
ERROR: type should be string, got "https://leetcode.com/problems/hand-of-straights/?envType=daily-question&envId=2024-06-06\n\n```js\n/**\n * @param {number[]} hand\n * @param {number} groupSize\n * @return {boolean}\n */\n\n function findSuccessors(hand, groupSize, i, n) {\n let next = hand[i] + 1\n hand[i] = -1\n let count = 1\n i++\n\n while(i < n && count < groupSize) {\n if (hand[i] === next) {\n next = hand[i] + 1\n hand[i] = -1\n count++\n }\n i++\n }\n\n return count === groupSize\n}\n\nvar isNStraightHand = function (hand, groupSize) {\n let n = hand.length\n\n if (n % groupSize !== 0) return false\n\n hand.sort((a, b) => a - b)\n\n for (let i = 0; i < hand.length; i++) {\n if (hand[i] !== -1) {\n if (! findSuccessors(hand, groupSize, i, n)) return false\n }\n }\n\n return true\n};\n\n```"
karleb
1,879,392
#846. Hand of Straights
https://leetcode.com/problems/hand-of-straights/?envType=daily-question&amp;envId=2024-06-06 /** ...
0
2024-06-06T15:51:49
https://dev.to/karleb/846-hand-of-straights-3778
ERROR: type should be string, got "https://leetcode.com/problems/hand-of-straights/?envType=daily-question&envId=2024-06-06\n\n```js\n/**\n * @param {number[]} hand\n * @param {number} groupSize\n * @return {boolean}\n */\n\n function findSuccessors(hand, groupSize, i, n) {\n let next = hand[i] + 1\n hand[i] = -1\n let count = 1\n i++\n\n while(i < n && count < groupSize) {\n if (hand[i] === next) {\n next = hand[i] + 1\n hand[i] = -1\n count++\n }\n i++\n }\n\n return count === groupSize\n}\n\nvar isNStraightHand = function (hand, groupSize) {\n let n = hand.length\n\n if (n % groupSize !== 0) return false\n\n hand.sort((a, b) => a - b)\n\n for (let i = 0; i < hand.length; i++) {\n if (hand[i] !== -1) {\n if (! findSuccessors(hand, groupSize, i, n)) return false\n }\n }\n\n return true\n};\n\n```"
karleb
1,879,390
Resume Tips for Healthcare Professionals
Crafting a compelling resume is crucial for healthcare professionals seeking to advance their careers...
0
2024-06-06T15:50:21
https://dev.to/jamespaterek/resume-tips-for-healthcare-professionals-2m2i
Crafting a compelling resume is crucial for healthcare professionals seeking to advance their careers or break into the field. The healthcare industry is known for its rigorous standards and competitive nature, making it essential for candidates to present themselves in the best possible light. Whether you are a physician, nurse, advanced practice provider, or allied health professional, your resume serves as your first impression to potential employers. Here are some tailored tips to help you create a standout resume that highlights your expertise and dedication to healthcare. [Read more](https://blog.millbrooksupport.com/resume-tips-for-healthcare-professionals).
jamespaterek
1,879,263
GvTZzin2vZ55ZyaJeeEy5Uu9KRYCd9a6FgTrAdGGTULw
A post by magkooh
0
2024-06-06T12:51:13
https://dev.to/magkooh/gvtzzin2vz55zyajeeey5uu9krycd9a6fgtradggtulw-3a29
magkooh
1,879,388
respinix
Respinix: Your unlimited access to demo slots from leading providers. At respinix.com you will find...
0
2024-06-06T15:48:11
https://dev.to/respinix5/respinix-13e5
Respinix: Your unlimited access to demo slots from leading providers. At [respinix.com](https://respinix.com/) you will find the largest collection of demo slots, allowing you to enjoy an exciting gaming experience without the need to register or make a deposit. With over 20,300 slots from 457 leading software providers, you can immerse yourself in hundreds of different themes and styles. Explore classic fruit machines, innovative 3D slots, games with captivating storylines and more - all available to you for free.
respinix5
1,879,387
RECOVER BITCOIN FROM FAKE TRADING SCAM - BOTNET CRYPTO RECOVERY
I am thrilled to share my recent experience with Botnet Crypto Recovery, a company that has...
0
2024-06-06T15:44:53
https://dev.to/scottie_mia_ad4d3916b5cd0/recover-bitcoin-from-fake-trading-scam-botnet-crypto-recovery-35b1
I am thrilled to share my recent experience with Botnet Crypto Recovery, a company that has completely transformed my outlook on fund recovery. After falling victim to a devastating scam that left my brother and me financially devastated, we were at a loss for what to do next. Our investment of $623,300 in Bitcoin had vanished due to the deceitful promises of con artists who lured us in with the promise of a 100% profit. It was a heartbreaking situation, and we felt utterly helpless. Desperate for a solution, we turned to the authorities, but unfortunately, no progress was made. Feeling defeated, we decided to seek the help of a recovery agent and came across Botnet Crypto Recovery, a company with a stellar reputation for assisting victims of scams. With nothing to lose, we reached out to them, hoping against hope for a miracle. From the moment we connected with Botnet Crypto Recovery, their professionalism and empathy were evident. They listened attentively to our story and promised to do everything possible to help us. Their assurance gave us a glimmer of hope in what had seemed like a hopeless situation. True to their word, Botnet Crypto Recovery sprang into action swiftly and efficiently. In just five days, we received an email informing us that they had successfully recovered our stolen funds. The relief and joy we felt were beyond words. Finally, we had reclaimed our hard-earned money from the clutches of fraudulent investment platforms. But Botnet Crypto Recovery didn't stop at just recovering our funds. They went above and beyond by ensuring that justice was served. The scammers responsible for our ordeal were apprehended and held accountable for their crimes. It was a moment of closure and vindication that we never thought we would experience. The dedication and expertise displayed by Botnet Crypto Recovery are truly remarkable. They not only restored our faith in the possibility of recovery but also restored our faith in humanity. Their unwavering commitment to helping scam victims is truly extraordinary. Thanks to botnet recovery, my brother and I were given another chance to rebuild our lives. They not only recovered our stolen funds but also provided us with closure and justice that we thought was out of reach. They are more than just a recovery service; they are beacons of hope in a world filled with darkness. if you ever find yourself in a situation like ours – a victim of scams with little hope of recovery. Their unwavering commitment to helping scam victims recover is truly Botnet Crypto Recovery. Thank you, Botnet Crypto Recovery, for turning our hope and for giving us back our assets. You truly are experts in the realm of recovery. Contact info bellow; WhatsApp: +1 2 2 4 9 3 5 2 9 4 8 Email: (chat@botnetcryptorecovery.info) Website: https://botnetcryptorecovery.info/
scottie_mia_ad4d3916b5cd0
1,879,386
RECOVER BITCOIN FROM FAKE TRADING SCAM - BOTNET CRYPTO RECOVERY
I am thrilled to share my recent experience with Botnet Crypto Recovery, a company that has...
0
2024-06-06T15:43:16
https://dev.to/scottie_mia_ad4d3916b5cd0/recover-bitcoin-from-fake-trading-scam-botnet-crypto-recovery-2f4c
I am thrilled to share my recent experience with Botnet Crypto Recovery, a company that has completely transformed my outlook on fund recovery. After falling victim to a devastating scam that left my brother and me financially devastated, we were at a loss for what to do next. Our investment of $623,300 in Bitcoin had vanished due to the deceitful promises of con artists who lured us in with the promise of a 100% profit. It was a heartbreaking situation, and we felt utterly helpless. Desperate for a solution, we turned to the authorities, but unfortunately, no progress was made. Feeling defeated, we decided to seek the help of a recovery agent and came across Botnet Crypto Recovery, a company with a stellar reputation for assisting victims of scams. With nothing to lose, we reached out to them, hoping against hope for a miracle. From the moment we connected with Botnet Crypto Recovery, their professionalism and empathy were evident. They listened attentively to our story and promised to do everything possible to help us. Their assurance gave us a glimmer of hope in what had seemed like a hopeless situation. True to their word, Botnet Crypto Recovery sprang into action swiftly and efficiently. In just five days, we received an email informing us that they had successfully recovered our stolen funds. The relief and joy we felt were beyond words. Finally, we had reclaimed our hard-earned money from the clutches of fraudulent investment platforms. But Botnet Crypto Recovery didn't stop at just recovering our funds. They went above and beyond by ensuring that justice was served. The scammers responsible for our ordeal were apprehended and held accountable for their crimes. It was a moment of closure and vindication that we never thought we would experience. The dedication and expertise displayed by Botnet Crypto Recovery are truly remarkable. They not only restored our faith in the possibility of recovery but also restored our faith in humanity. Their unwavering commitment to helping scam victims is truly extraordinary. Thanks to botnet recovery, my brother and I were given another chance to rebuild our lives. They not only recovered our stolen funds but also provided us with closure and justice that we thought was out of reach. They are more than just a recovery service; they are beacons of hope in a world filled with darkness. if you ever find yourself in a situation like ours – a victim of scams with little hope of recovery. Their unwavering commitment to helping scam victims recover is truly Botnet Crypto Recovery. Thank you, Botnet Crypto Recovery, for turning our hope and for giving us back our assets. You truly are experts in the realm of recovery. Contact info bellow; WhatsApp: +1 2 2 4 9 3 5 2 9 4 8 Email: (chat@botnetcryptorecovery.info) Website: https://botnetcryptorecovery.info/
scottie_mia_ad4d3916b5cd0
1,879,385
Buy verified cash app account
https://dmhelpshop.com/product/buy-verified-cash-app-account/ Buy verified cash app account Cash...
0
2024-06-06T15:41:44
https://dev.to/dylangilbert07625/buy-verified-cash-app-account-2kom
webdev, javascript, beginners, programming
ERROR: type should be string, got "https://dmhelpshop.com/product/buy-verified-cash-app-account/\n![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/f3qk797ljfvj8xotdtmh.png)\n\nBuy verified cash app account\nCash app has emerged as a dominant force in the realm of mobile banking within the USA, offering unparalleled convenience for digital money transfers, deposits, and trading. As the foremost provider of fully verified cash app accounts, we take pride in our ability to deliver accounts with substantial limits. Bitcoin enablement, and an unmatched level of security.\n\nOur commitment to facilitating seamless transactions and enabling digital currency trades has garnered significant acclaim, as evidenced by the overwhelming response from our satisfied clientele. Those seeking buy verified cash app account with 100% legitimate documentation and unrestricted access need look no further. 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Trust your intuition; skepticism towards deals that appear overly advantageous or sellers who raise red flags is warranted. It is always wise to prioritize caution and explore alternative avenues if uncertainties arise.\n\nConclusion\nEnhance your online financial transactions with verified Cash App accounts, a secure and convenient option for all individuals. By purchasing these accounts, you can access exclusive features, benefit from higher transaction limits, and enjoy enhanced protection against fraudulent activities. Streamline your financial interactions and experience peace of mind knowing your transactions are secure and efficient with verified Cash App accounts.\n\nChoose a trusted provider when acquiring accounts to guarantee legitimacy and reliability. In an era where Cash App is increasingly favored for financial transactions, possessing a verified account offers users peace of mind and ease in managing their finances. Make informed decisions to safeguard your financial assets and streamline your personal transactions effectively.\n\nContact Us / 24 Hours Reply\nTelegram:dmhelpshop\nWhatsApp: +1 ‪(980) 277-2786\nSkype:dmhelpshop\nEmail:dmhelpshop@gmail.com\n\n"
dylangilbert07625
1,879,384
How To Create a Virtual ATM Card using Plain HTML & CSS
Imagine at your disposal, you only have a picture of the Master Card Logo and another picture of the...
0
2024-06-06T15:39:23
https://dev.to/george_kingi/how-to-create-a-virtual-atm-card-using-plain-html-css-nmj
frontend, html, beginners, css
Imagine at your disposal, you only have a picture of the Master Card Logo and another picture of the ATM card chip, you are tasked to create a visually appealing ATM card from the two separate pictures. You are about to find out how powerful CSS and HTML are. The Tech space is ever-changing but understanding these two languages is crucial for any aspiring Front-End developer. This article will guide you on how to make the front and back sides of an ATM card from scratch. The card will flip to the back or front sides when hovered over. We will build the structure of the card using HTML, and then make our ATM card more real and appealing using CSS. This article is meant for beginners and experts in web development. ### Tools We Need: 1. The Vs Code Editor: 2. A Picture of Master Card Logo 3. A picture of an ATM card chip ### Preview of the Final output of the ATM Card We will create the below-flipping ATM card, you will notice that once you move your cursor over the front or back sides of the ATM, the image responds by flipping on either side. Feel free to change the content of the card as the information displayed on the card is my own ![Front side](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/zza36yblbg9pakdomgfv.png) ![Backside](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/aerc8ox625n48zbrpaxo.PNG) ### Creating The ATM Card from Scratch We will go ahead and create an HTML file and a CSS file then link them via the external style. Follow the below steps; 1. Visit Google and search for “Master card logo image”. Select and save the image on your computer by either downloading it or snipping it. 2. While on Google, search for “ATM card chip image”. Select the chip image of your choice, snip and save it on your computer. Create a folder anywhere on your computer, name it whatever you want and copy the two images here. 3. Open Vs Code Editor, go to file select open folder then select the folder you just created. While on the Vs Code Editor, create a new file and name it index.html. The file name must have the extension .html 4. Create a new file and name it style.css. The file name must have the extension .css. You should have something like the snip below, I named my folder “Atm”. ![Snip](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7r10329z61zjda4wr76w.PNG) ### HTML Syntax Open index.html and enter the below code: ``` <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>VIRTUAL CARD</title> <link rel="stylesheet" href="style.css"> </head> <body> <section> <div class="Card"> <div class="front-face"> <header> <span class="logo"> <img src="Chip Image.PNG"> <h5>Master Card</h5> </span> <img src="Mastercard Logo.png" class="mscard"> </header> <div class="Card-details"> <div class="name-number"> <h6>Card Number</h6> <h5 class="Number">2547 0080 9861 0000</h5> <h5 class="name">George Kingi</h5> </div> <div class="valid-date"> <h6>Valid Thru</h6> <h5>25/03</h5> </div> </div> </div> <div class="back-face"> <h6>For customer service call +2547 0080 9861 or email at kingsgee@gmail.com </h6> <span class="magnetic-strip"></span> <div class="signature"><i>208</i> </div> <h5><p>By using this card the holder agrees to the terms and conditions under which it was issued</p><br><p>This card is issued by and remains the property of Master card Bank Plc, if found please return it to any bank</p></h5> </div> </div> </section> </body> </html> ``` **Output: ** ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/nw9man8klinhqtfq3c7l.PNG) With the above HTML syntax, the structure of our ATM Card is set. The next step is to introduce the powerful CSS to place each of the above information into its rightful place. ### Application and Implementation of different designs and styles of the ATM Card. To understand the CSS code better, you will be required to check the comments on the code which offer ease of understanding. ### The CSS Syntax ``` <!--Resizing the page and font type--> *{margin: 0%; padding: 0 ; box-sizing: border-box; font-family: sans-serif; } <!--Adding different properties on section area--> section{ min-height: 100vh; width: 100%; position: relative; background-color: rgb(231, 129, 5) ; display: flex; align-items: center; justify-content: center; color: bisque;} .Card{ height: 225px; width: 350px; position: relative; z-index: 100; transition: 0.6s; transform-style: preserve-3d; } <!--Adding hover effect on the card--> .Card:hover { transform: rotateY(180deg); } .Card .front-face,.back-face{ position: absolute; background-color: rgba(23, 0, 0, 0.1); height: 100%; width: 100%; border-radius: 25px; backdrop-filter: blur(25px); border: 1px solid #4e1528; padding: 25px; backface-visibility: hidden;} <!--Adding Flip on the back-face of card--> .back-face{ border: none; padding: 15px 25px 25px; transform: rotateY(180deg);} .front-face .logo img{ width: 50px; margin-right: 100px; } h5{ font-size: 16px; font-weight: 400; } .front-face .mscard{ width: 50px; } .front-face header, .front-face .logo {display: flex; align-items: center;} .front-face header {justify-content: space-between;} .front-face .Card-details {margin-top: 40px; display: flex; align-items: flex-end; justify-content: space-between;} h6{font-size:10px; font-weight: 400;} h5.Number{font-size: 18px; letter-spacing: 1px;} h5.name {margin-top: 20px;} .back-face h6{font-size: 10px;} <!--Adding different properties for the back of card--> .Card .back-face .magnetic-strip {position: absolute; height: 40px; background-color: black; width: 100%; top: 50px; left: 0;} .Card .back-face .signature {display: flex; justify-content: flex-end; align-items: center; margin-top: 80px; height: 40px; width: 85%; border-radius: 6px; background: repeating-linear-gradient(#fff, #fff 3px, #efefef 0, #efefef 9px); } .signature i {color: black; font-size: 12px; margin-right: -30px; background-color: white; padding: 4px 6px; border-radius: 4px; z-index: -1;} .Card .back-face h5 {font-size: 9px; margin-top: 10px;} ``` **Output:** ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/u9m7o9n8mylmvhshqca6.gif) ### Conclusion In summary, CSS is so powerful that it can do almost anything, we just created an ATM card, surely CSS can do anything, and developers are encouraged to be more creative to cultivate this knowledge. The same knowledge can be applied in the creation of wonderfully designed websites including; Portfolio websites, E-commerce websites, Personal Websites, Business websites, etc.
george_kingi
1,879,383
Unleash the True Potential of Your Web Applications with React to Next.js
Although it has grown to be a dominant force in web development, React is not without its drawbacks....
0
2024-06-06T15:38:30
https://dev.to/s0330b/unleash-the-true-potential-of-your-web-applications-with-react-to-nextjs-314k
react, nextjs, webdev, javascript
Although it has grown to be a dominant force in web development, React is not without its drawbacks. Even while React is great at creating user interfaces, there are moments when it seems like it is missing key essential features and tools for developing whole online apps. This is where Next.js comes in. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4u7z6h6wxcjr3gtp4r7k.png) ## SEO Challenges with React Client-side rendering is the default technology used by React applications (CSR). This may make it more difficult for search engines to properly index your content, which could hurt the SEO performance of your app. ## Saved by Next.js: Server-Side Rendering (SSR) Next.js overcomes this obstacle by providing SSR functionality right out of the bat. The content of your app is pre-rendered on the server with SSR, which increases the discoverability of your app by facilitating easy access for search engines. ## React's Performance Considerations Even while React is a performant framework, creating intricate SPAs (single-page apps) with it can cause performance issues, particularly during initial load. ## Next.js to the Rescue: Code-Splitting and Static Site Generation (SSG) Using technologies like SSG, which builds static HTML pages ahead of time during build, Next.js addresses this problem. Even with slower connections, this method guarantees your visitors will experience lightning-fast load times. To further improve efficiency, Next.js intelligently divides your application's code, loading only the code that is needed for the current page. ## Headaches with Navigation in React React routing might occasionally seem like an afterthought, requiring the implementation of extra libraries or unique setups. ## Rescued by Next.js: Pre-Integrated Routing Next.js's integrated routing features simplify navigating. This removes the need for difficult setup procedures and improves the intuitiveness of maintaining the structure of your program. ## A More Easygoing Development Process It makes sense to switch from React to Next.js. Because Next.js is based on React, you can easily leverage its capabilities without having to go through a steep learning curve because your existing React expertise will translate. ## Accept React Development's Future For React developers looking to construct online applications that are next-level, Next.js provides an attractive option. Next.js gives you the tools to create amazing online apps that are both user-friendly and performant by taking care of routing difficulties, performance bottlenecks, and SEO issues. Are you prepared to advance your React development abilities? Explore Next.js and see all of its possibilities!
s0330b
1,879,382
Regional Analysis of the Washed Silica Sand Market: Growth Prospects and Challenges
Washed Silica Sand Market Size | Share | Scope | Trends | Forecast report "Washed Silica Sand Market...
0
2024-06-06T15:33:47
https://dev.to/aryanbo91040102/regional-analysis-of-the-washed-silica-sand-market-growth-prospects-and-challenges-dp0
Washed Silica Sand Market Size | Share | Scope | Trends | Forecast report "Washed Silica Sand Market by Fe Content (>0.01%, ≤0.01%), Particle Size (≤0.4mm, 0.5mm – 0.7mm, >0.7mm), Application (Glass, Foundry, Oil well cement, Ceramic & Refractories, Abrasive, Metallurgy, Filtration) and Region - Global Forecast to 2026", size is projected to grow from USD 18 million in 2021 to USD 24 million by 2026, at a CAGR of 5.4% from 2021 to 2026. The market is projected to grow in accordance with the increase in the demand for silica sand for numerous applications, particularly for glass and foundry application across the globe. Global Washed Silica Sand Market Dynamics The Washed Silica Sand Market Is Characterized By Various Dynamic Factors Including Technological Advancements, Regulatory Policies, And Fluctuating Raw Material Prices. Additionally, competitive actions by firms, such as pricing strategies, marketing campaigns, and product development, play a critical role in shaping market dynamics, as do sociocultural trends that shift consumer preferences and behaviors. Understanding these factors is crucial for businesses to adapt and thrive in an ever-evolving market environment.. **Download Full PDF Sample Copy of Research Report @ [https://www.marketsandmarkets.com/pdfdownloadNew.asp?id=23955586](https://www.marketsandmarkets.com/pdfdownloadNew.asp?id=23955586)** Washed Silica Sand Market Trends Washed Silica Sand Market trends refer to the general direction in which a market or sector is moving over a period, shaped by various influences and indicative of future potential. These trends can be driven by a multitude of factors, including technological advancements, consumer behavior shifts, and macroeconomic changes. For instance, the increasing integration of artificial intelligence and automation in industries reflects a trend toward greater efficiency and innovation. Sustainability and eco-consciousness are also prominent trends, with consumers and businesses alike prioritizing environmentally friendly practices and products. Washed Silica Sand Market Challenges Washed Silica Sand Market challenges refer to the obstacles and pressures that businesses face in the marketplace, which can hinder their growth and operational efficiency. These challenges include intense competition, which forces companies to continuously innovate and improve their offerings to maintain market share. Economic volatility, such as recessions or inflation, can reduce consumer spending power and disrupt financial stability. Regulatory changes and compliance requirements can impose additional costs and complexities on businesses, particularly in heavily regulated industries. Who is the largest manufacturers of Washed Silica Sand Market worldwide? US Silica Holdings, Sibelco NV, U.S. Silica Holdings, VRX Silica Limited, Australian Silica Quartz Group, Adwan Chemical Industries Short Description About Washed Silica Sand Market: Key insights provided include market and segment sizes, competitive landscapes, current status, and emerging trends. Additionally, the report offers in-depth cost analyses and supply chain evaluations. **Get Sample Copy of this Report: [https://www.marketsandmarkets.com/requestsampleNew.asp?id=23955586 ](https://www.marketsandmarkets.com/requestsampleNew.asp?id=23955586 )** Technological innovations are anticipated to enhance product performance, driving broader adoption across various downstream applications. Furthermore, insights into consumer behavior and market dynamics, including drivers, restraints, and opportunities, furnish vital intelligence for understanding the Washed Silica Sand Market landscape. Washed Silica Sand Market Segments Analysis The Washed Silica Sand Market research report employs a meticulous segmentation strategy, offering deep insights into various market segments such as application, type, and region. This approach provides readers with a nuanced understanding of the driving forces and obstacles within each segment, tailored to meet the discerning needs of industry stakeholders. Washed Silica Sand Market By Type Particle Size ≤0.4mm, Particle Size 0.5mm – 0.7mm, Particle Size > 0.7mm Washed Silica Sand Market By Application Ceramic & Refractories, Abrasive, Metallurgy, Filtration Washed Silica Sand Market Regional Analysis Regional analysis in market research is a method used to evaluate and understand market dynamics within specific geographic areas. This approach involves examining the unique characteristics, economic conditions, consumer behaviors, and competitive landscapes of different regions to identify trends, opportunities, and challenges relevant to businesses. Key components of regional analysis include: Demographic Analysis: Economic Conditions: Consumer Behavior: Competitive Landscape: Regulatory Environment: Infrastructure and Accessibility: **Get Discount On The Purchase Of This Report @ [https://www.marketsandmarkets.com/requestCustomizationNew.asp?id=23955586](https://www.marketsandmarkets.com/requestCustomizationNew.asp?id=23955586)** This Washed Silica Sand Market Research/Analysis Report Contains Answers to your following Questions What are the global trends in the Washed Silica Sand Market? Would the market witness an increase or decline in the demand in the coming years? What is the estimated demand for different types of products in Frame Fixing ? What are the upcoming industry applications and trends for the Washed Silica Sand Market? What Are Projections of Global Frame Fixing Industry Considering Capacity, Production and Production Value? What Will Be the Estimation of Cost and Profit? What Will Be Market Share, Supply and Consumption? What about imports and Export? Where will the strategic developments take the industry in the mid to long-term? What are the factors contributing to the final price of Frame Fixing ? What are the raw materials used for Frame Fixing manufacturing? How big is the opportunity for the Washed Silica Sand Market? How will the increasing adoption of Frame Fixing for mining impact the growth rate of the overall market? How much is the global Washed Silica Sand Market worth? What was the value of the market In 2020? Who are the major players operating in the Washed Silica Sand Market? Which companies are the front runners? Which are the recent industry trends that can be implemented to generate additional revenue streams? What Should Be Entry Strategies, Countermeasures to Economic Impact, and Marketing Channels for Frame Fixing Industry? Detailed TOC of Global Washed Silica Sand Market Research Report 1. Introduction of the Washed Silica Sand Market Overview of the Market Scope of Report Assumptions 2. Executive Summary 3. Research Methodology of Verified Market Reports Data Mining Validation Primary Interviews List of Data Sources 4. Washed Silica Sand Market Outlook Overview Market Dynamics Drivers Restraints Opportunities Porters Five Force Model Value Chain Analysis 5. Washed Silica Sand Market, By Product 6. Washed Silica Sand Market, By Application 7. Washed Silica Sand Market, By Geography North America Europe Asia Pacific Rest of the World 8. Washed Silica Sand Market Competitive Landscape Overview Company Market Ranking Key Development Strategies 9. Company Profiles 10. Appendix
aryanbo91040102
1,879,380
Day 2 - Learning basic Linux Commands
Learned few basic commands around linux and tested in my putty. Commands like Date,MAN,Cat,echo,ls...
0
2024-06-06T15:32:06
https://dev.to/anakin/day-2-learning-basic-linux-commands-2mkl
linux
Learned few basic commands around linux and tested in my putty. Commands like Date,MAN,Cat,echo,ls etc. It was a good learning session as I started learning linux in my college with these commands only. It was a good memory refresh. Going to learn few more commands day by day. See you soon
anakin
1,879,348
Internal Divide Space Sound Material Soundproof Folding Removable Divider Wall for Classroom
AcousticPartitionWall was founded in 2011, located in Guangdong Province, China, specializing in the...
0
2024-06-06T15:19:23
https://dev.to/robert_johnlucero_ee80d6/internal-divide-space-sound-material-soundproof-folding-removable-divider-wall-for-classroom-101h
AcousticPartitionWall was founded in 2011, located in Guangdong Province, China, specializing in the R&D and production of high quality acoustic screens. Targeting at the annual output of 300, 000 square meters, the plan for the first phase has been implemented, while phase two and three are still under construction. We are cooperating with various companies, current main markets including customers of maintenance and construction company, architecture company, furniture dealer, consulting engineering company, etc. CommercialBInteriors is a custom interior decoration expert dedicated to creating vibrant lighting, furniture, fixtures and showcase products for the retail, restaurant, hotel, commercial and industrial markets. ConstructionServiceS is a multi-disciplinary construction service company dedicated to providing customers with first-class electromechanical installation and maintenance services. CDXUS is a company based in Brisbane, Australia, which specializes in real estate and commercial building maintenance industries covering the entire state of Queensland. GISZXN provides conventional engineering contracting, leveling, earthwork and paving services for San Jose construction customers and Stockton construction customers. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ls939wj4p8jw77xapn17.jpg) Acoustic Sound Absorbing Panels Made in China Factory Polyester Fiber Acoustic Board 9mm Thk Classroom Soundproof Folding Partition Sound Operable Partition Wall With High Quality Partition Our products are selling well in Gdansk Poland, Kaduwela Sri Lanka, Brighton and Hove United Kingdom, Cheonan South Korea, Athen, Gómez Palacio Mexico, Milan Italy, Bouake Cote d'Ivoire, Surabaya Indonesia, Puerto Plata Dominican Republic, Munger India, Tembladora Trinidad and Tobago,, including more than 50 countries. Frequently Asked Acoustical Issues The partition wall must be sound proof so that adjacent offices do not disturb personnel working in Room 109A and vice versa. Wall must match color of existing wall (beige); contractor must either provide wall that matches existing beige color or paint wall to match beige color of existing walls. Measurements for the wall to be installed is 238" wide x 106" high. The products of our company are used in a lot of applications such as museum of contemporary art, city council offices, welcome center, multipurpose auditorium, office building, banquet hall project at restaurant, church hall, hotel banquet hall project, museums and galleries, community halls and multi purpose spaces, conference hall project, etc. In line with the principles of cooperation and mutual benefits, we welcome your inquires. Website: https://www.acousticpartitionwall.com/product/acoustic-partition-wall/
robert_johnlucero_ee80d6
1,879,347
Future vs CompletableFuture classes in Java
The Future and CompletableFuture classes in Java both represent asynchronous computations, but they...
0
2024-06-06T15:19:01
https://dev.to/codegreen/future-vs-completablefuture-classes-in-java-1n07
java, java8, fullstack
The `Future` and `CompletableFuture` classes in Java both represent asynchronous computations, but they have some differences in terms of functionality and usage. ### Future: - **Syntax:** ```java Future<ResultType> future = executorService.submit(Callable<ResultType> task); ``` - **Example:** ```java ExecutorService executor = Executors.newFixedThreadPool(1); Future<String> future = executor.submit(() -> { Thread.sleep(2000); // Simulate a time-consuming task return "Hello, from Future!"; }); String result = future.get(); // Blocking call to get the result System.out.println(result); executor.shutdown(); ``` ### CompletableFuture: - **Syntax:** ```java CompletableFuture<ResultType> future = CompletableFuture.supplyAsync(Supplier<ResultType> supplier); ``` - **Example:** ```java CompletableFuture<String> future = CompletableFuture.supplyAsync(() -> { try { Thread.sleep(2000); // Simulate a time-consuming task } catch (InterruptedException e) { e.printStackTrace(); } return "Hello, from CompletableFuture!"; }); future.thenAccept(result -> System.out.println(result)); // Non-blocking callback ``` - **Differences:** 1. **Completion Handling**: Future relies on blocking methods like get() for result retrieval, while CompletableFuture provides non-blocking methods like thenAccept() for completion handling. 2. **Composition**: CompletableFuture supports fluent API and allows chaining of multiple asynchronous operations, whereas Future does not. 3. **Explicit Completion**: CompletableFuture allows explicit completion via methods like complete() or completeExceptionally(), which can be useful in certain scenarios. #### Poll: Which Java related Questions would you like to read more about? - Java 8, 11, 17 feature - Streams - Spring, Spring Boot - Multi Threading - Design Patterns Leave a comment below! -------------- Discover the more Java interview question for experienced developers! [YouTube Channel Link] (www.youtube.com/@codegreen_dev)
manishthakurani
1,879,346
Introduction to Aggregation Pipeline in MongoDB
Hello and Welcome back readers to this amazing series in which we are going to explore deeply the...
0
2024-06-06T15:17:38
https://dev.to/wunmicrown/introduction-to-aggregation-pipeline-in-mongodb-4bo7
Hello and Welcome back readers to this amazing series in which we are going to explore deeply the MongoDB aggregation pipeline and how it reduces the number of steps and simplifies the process of data extraction from your database. But Before moving forward with Aggregation Pipeline, let us learn what are the diiferent types of aggregation that are available or provided by MongoDB. Types of Aggregation in MongoDB: So MongoDB provides three types of Aggregation 1. Map Reduce FunctionSingle 2. Purpose Aggregation 3. Aggregation Pipeline Map Reduce Function: Map Reduce is used for aggregating results for a large volume of data. Map reduce has two main functions one is a map that groups all the documents and the second one is the reduce which operates on the grouped data.
wunmicrown
1,879,345
Difference between array() and []
In PHP, array() and [] are both used to create arrays, but they are slightly different. array() is...
0
2024-06-06T15:15:36
https://dev.to/manomite/difference-between-array-and--3ffb
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/chi1et4x2sxuo6z7ujx9.jpg) In PHP, array() and [] are both used to create arrays, but they are slightly different. array() is the traditional way to create an array in PHP, and it's a language construct. It can be used to create both indexed and associative arrays. Example: ``` $fruits = array('apple', 'banana', 'orange'); ``` On the other hand, [] is a shorthand syntax for creating arrays, introduced in PHP 5.4. It's an alternative to array() and is used to create arrays in a more concise way. ``` $fruits = ['apple', 'banana', 'orange']; ``` Both methods can be used interchangeably, but [] is generally preferred for its brevity and readability.
manomite
1,879,344
Popular platforms for modern developers in 2024
In this article we will see the popular platforms for modern developers in 2024, example, this site:...
0
2024-06-06T15:11:25
https://dev.to/tidycoder/popular-platforms-for-modern-developers-in-2024-4l86
In this article we will see the popular platforms for modern developers in 2024, example, this site: DEV, honestly, I see the <a href="https://dev.to/" target="_blank">DEV community</a> an alternative for twitter to publish posts on a developer community. <a target="_blank" href="https://www.youtube.com/">Youtube</a> is also good to watch tutorials in multiple domains like the coding. Secondly, there are the coding spaces community to stock codes and contribute to projects, example: <a href="https://github.com/" target="_blank">Github</a> or alternatively <a href="https://gitlab.com" target="_blank">Gitlab</a> if you want, this is your choice. You can also publish HTML/CSS/JS codes on <a href="https://codepen.io/" target="_blank">codepen</a>, a very good platform for this. Finnaly, if you want to contribute to challenges you can see the codepen and the <a href="https://codier.io/" target="_blank">codier</a> challenges, and the DEV challenges.
tidycoder
1,878,228
The Core Azure Architectural Components
Microsoft Azure is a public cloud computing platform with solutions including Infrastructure as a...
0
2024-06-06T15:11:05
https://dev.to/abidemi/core-architectural-components-2olb
azure, cloud, beginners, architecture
Microsoft Azure is a public cloud computing platform with solutions including Infrastructure as a Service (IaaS), Platform as a Service (PaaS) and Software as a Service (PaaS) which can be used for services such as virtual computing, storage, networking, analytics and so much more. It is cost efficient, scalable, reliable and flexible. Microsoft Azure core architectural components are Azure regions, Azure availability zones, resource groups, and Azure resource manager(ARM). In this article, we will discuss the basic functions of these components. **Azure Regions:** They are different geographical areas that consist availability zones. It is the location of data centers. They offer high availability to protect applications and data from data center failures. There are over 60 regions and they are available in 140 countries. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/duhwlofwx69e0t36zx18.png) **Azure Availability Zones:** They are physically separate locations within an azure region. Each zone is supported by one or more data centers. It reduces latency for global users and faster disaster recovery. We can have a minimum of three (3) zones in a region. Availability zone is a subset of a region. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/t4jprqhi83u704h15pyi.png) **Resource groups:** a logical container for Azure resources for deployment. In a simpler form, resource group is like a folder where you keep all the related parts of a project together. It helps unifies lifecycle management, access control, security and cost management. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/6zm0cxy89sh2saz2cyvm.png) **Azure Resource Manager(ARM):** is the deployment and management service for Azure. It is the overall system that lets you control and manage all folders and their contents efficiently. Some of the benefits of a resource manager is that all resources are in a centralized directory, tracks project planning and high-level reporting. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/081j2vu8k9y8tcdbxzza.png) The core Azure architectural components such as regions, availability zones, resource groups are like an underlying building blocks for azure deployment and the Azure resource manager is used to manage these building blocks and the solutions built on them. These key architectural components gives a better understanding of how Azure solutions are built and supported.
abidemi
1,862,903
Duck typing in Ruby: Polymorphism
Duck typing in Ruby:...
0
2024-05-23T14:09:08
https://dev.to/rubyblaze/duck-typing-in-ruby-polymorphism-1k90
{% embed https://medium.com/devops-dev/duck-typing-in-ruby-polymorphism-5fad049fc7e9 %}
rubyblaze
1,879,340
Difference between mvn install and mvn package
mvn install and mvn package are both Maven commands, but they serve different purposes: mvn...
0
2024-06-06T15:07:32
https://dev.to/codegreen/difference-between-mvn-install-and-mvn-package-1m02
java, maven
`mvn install` and `mvn package` are both Maven commands, but they serve different purposes: 1. **mvn install**: - This command compiles the source code of your project, runs any tests, and packages the compiled code into a JAR or WAR file. - It then copies the packaged artifact (JAR or WAR) into the local Maven repository, making it available to other projects locally on your machine. - It is typically used to install your project's artifacts into the local repository for use in other projects that depend on it. 2. **mvn package**: - This command also compiles the source code of your project, runs tests, and packages the compiled code into a JAR or WAR file, similar to `mvn install`. - However, unlike `mvn install`, it does not install the generated artifact into the local Maven repository. - Instead, it only creates the packaged artifact in the `target` directory of your project's build directory. - It is commonly used to generate the packaged artifact for distribution or deployment, without installing it into the local repository. In summary, while both commands compile source code, run tests, and package the compiled code into an artifact, `mvn install` additionally installs the artifact into the local Maven repository, whereas `mvn package` simply creates the artifact in the project's `target` directory without installing it locally.
manishthakurani
1,879,342
JavaScript Design Patterns - Behavioral - Command
The command pattern allows encapsulating a request as an object. This transformation lets you pass...
26,001
2024-06-06T15:06:43
https://dev.to/nhannguyendevjs/javascript-design-patterns-behavioral-command-5e9d
programming, javascript, beginners
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/l0ts4tzmo8ymd54i8yz2.png) The **command** pattern allows encapsulating a request as an object. This transformation lets you pass requests as method arguments, delay or queue a request’s execution, and support undoable operations. In the below example, we encapsulate the on/off instructions as objects and pass them as arguments in the Car constructor. ```js class Car { constructor(instruction) { this.instruction = instruction; } execute() { this.instruction.execute(); } } class Engine { constructor() { this.state = false; } on() { this.state = true; } off() { this.state = false; } } class OnInstruction { constructor(engine) { this.engine = engine; } execute() { this.engine.on(); } } class OffInstruction { constructor(engine) { this.engine = engine; } execute() { this.engine.off(); } } export { Car, Engine, OnInstruction, OffInstruction }; ``` A complete example is here https://stackblitz.com/edit/vitejs-vite-ejmk6g?file=main.js 👉 Use this pattern when we have a queue of requests to handle or if we want to have an undo action. --- I hope you found it helpful. Thanks for reading. 🙏 Let's get connected! You can find me on: - **Medium:** https://medium.com/@nhannguyendevjs/ - **Dev**: https://dev.to/nhannguyendevjs/ - **Hashnode**: https://nhannguyen.hashnode.dev/ - **Linkedin:** https://www.linkedin.com/in/nhannguyendevjs/ - **X (formerly Twitter)**: https://twitter.com/nhannguyendevjs/ - **Buy Me a Coffee:** https://www.buymeacoffee.com/nhannguyendevjs
nhannguyendevjs
1,878,993
LeetCode Array Part 2 (977, 209)
Leetcode No.977 Squares of a Sorted Array Question Description : Given an integer array...
0
2024-06-06T15:05:35
https://dev.to/flame_chan_llll/leetcode-array-part-2-3g3p
leetcode, java, algorithms
## Leetcode No.977 Squares of a Sorted Array Question Description : Given an integer array nums sorted in non-decreasing order, return an array of the squares of each number sorted in non-decreasing order. [Original Page](https://leetcode.com/problems/squares-of-a-sorted-array/description/) In certain circumstances, both positive numbers and negative numbers in the original array so it might be hard for us to conduct this problem in-place! -> need a new array with the same shape ### Method 1 1. First, we can compare the data of the second last element in the new array with the squared element in the original array 2. Then based on the result of the comparison, we can fill in the element to the new array to ensure a non-ascending order from (current index)right to left (beginning) which means the entire new array will be still a non-descending order. Then according to their ![Logic image](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/xy0k3avk6qv65ke1jzno.png) ``` nums[0] = nums[0]*nums[0]; if(nums.length == 1){ return nums; } int[] output = new int[nums.length]; output[0] = nums[0]; for(int i=1; i<nums.length; i++){ int j = i; int num = nums[i]*nums[i]; boolean isFinish = false; // quit condition, if we swap all element or has filled in the right place while(!isFinish && j>0){ // filled in the right place if(output[j-1]<=num){ output[j] = num; isFinish = true; } // now we have to move the larger element to the right until find the right place else{ output[j] = output[j-1]; output[j-1] = num; j--; } } } return output; } ``` **The order of this Method is O(n^2),somewhat suboptimal.** **But this method will still work when the original array is not sorted!** ### Method 2 double vector - The sorted non-decreasing original array, which implies that the absolute value of the left side and right side might be larger when both positive and negative numbers exist. - And when only positive or negative numbers exist, it will impact not too much. - We can compare the left element to the right element first (because it might be the biggest one in a `sorted array`) ``` int[] output = new int[nums.length]; // double vector int left = 0; int right = nums.length-1; //make it easy to process (original array is sorted ) for(int i=nums.length-1; i>-1; i--){ if(Math.abs(nums[left]) >Math.abs(nums[right])){ output[i] = nums[left]*nums[left]; left++; } else{ output[i] = nums[right]*nums[right]; right--; } } return output; } ``` The complexity now is `O(n)` improved a lot more than before `O(n^2)`! **But be careful the condition that now the original array is `sorted` we can use it in this way!** ##LeetCode No.209 Minimum Size Subarray Sum Given an array of positive integers nums and a positive integer target, return the minimal length of a subarray whose sum is greater than or equal to the target. If there is no such subarray, return 0 instead. **A subarray is a contiguous non-empty sequence of elements within an array.** [Question original page](https://leetcode.com/problems/minimum-size-subarray-sum/description/) keywords: `subarray`, `contiguous`, `sum` ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/zdgiiom239d1i5efgeye.png) - each subarray will be from left index boundary i to right index boundary. - then we change the boundary size - in each inner loop we find the subarray, by changing j to adjust the right index boundary - in each outer loop we find the subarray, by changing i to adjust the left index boundary. ``` int cnt = Integer.MAX_VALUE; for(int i=0; i<nums.length; i++){ int sum = 0; for(int j=i; j<nums.length; j++){ if(nums[j] >= target){ return 1; } sum += nums[j]; if(sum >= target){ cnt = Math.min(cnt, j-i+1); break; } } } if (cnt == Integer.MAX_VALUE) {return 0;} return cnt; } ``` But it will cause `Time Limit Exceeded` in No.19 test cases. because this method will be `O(n^2)` in complexity . ### Method 2 Now we need to optimize the above algorithm. First, we should identify the potential progression points above. - we use a double loop and it might cause some redundant computation e.g. we always fixed an index boundary even though there are useless and effectless loops among it we can not jump out and we can only wait for the inner loop to finish normally. So here we consider a new way, a `dynamic` way to conduct the loop inspired by the thought of double vector ``` public int minSubArrayLen(int target, int[] nums) { int left = 0; int right = 0; int count = Integer.MAX_VALUE; int sum = 0; while(right<nums.length){ sum += nums[right]; while(sum >= target){ // now we should update left side because we have find subarray but it might not be the minimum one. count = Math.min(count, right-left+1); // the left boundary do a unit right shift,we will decrease the original left boundary element. sum -= nums[left++]; } right++; } return count==Integer.MAX_VALUE ? 0 : count; } ``` ### Here I will summarize I suffered the problem during my coding - Condition ``` while(left<=right && right<nums.length && left<nums.length) ``` I used two more useless conditions to evaluate the loop it is redundant because in - use `if` instead of `while` in the inner part wrong code here: ``` if(sum >= target){ //Now we should update the left side because we have found subarray but it might not be the minimum one. count = Math.min(count, right-left+1); // the left boundary does a unit right shift, we will decrease the original left boundary element. sum -= nums[left++]; } else{ sum += nums[right++]; } } ``` if using `if` it will do a left-boundary-shift once so it will also loss some potential subarray! - Activate loop too early. `Before I use `sum += nums[right++];` which is a wrong example! ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4rcr592c9tkiyejlaqr0.png) This will change the inner part code right away so that it can cause a wrong answer because it modifies `left` before doing the evaluation. ** Be careful about the condition!**
flame_chan_llll
1,879,339
Regional Insights: Polyethylene Furanoate (PEF) Market Trends and Growth Prospects
The report "Polyethylene Furanoate (PEF) Market by Source (Plant Based, Bio Based), Grade,...
0
2024-06-06T15:04:14
https://dev.to/aryanbo91040102/regional-insights-polyethylene-furanoate-pef-market-trends-and-growth-prospects-3k57
The report "Polyethylene Furanoate (PEF) Market by Source (Plant Based, Bio Based), Grade, Application (Bottles, Films, Fibers, Molded), End-Use Industry (Packaging, Fiber & Textiles, Electronics & Electrical, Pharmaceuticals), & Region - Global Forecast to 2028 ",is projected to reach USD 28 million by 2028, at a CAGR of 8.1 % from USD 19 million in 2023. The PEF market is mainly driven by government regulation & policies. Moreover, increasing demand for PEF for bottle production and the growing demand from the fiber segment. Browse in-depth TOC on "Polyethylene Furanoate (PEF) Market" 310 – Tables 148 – Figures 270 – Pages **Download PDF Brochure: [https://www.marketsandmarkets.com/pdfdownloadNew.asp?id=183927881](https://www.marketsandmarkets.com/pdfdownloadNew.asp?id=183927881) ** Packaging segment is projected to grow at fastest CAGR, in terms of value, during the forecast period. The packaging sector is a crucial domain for Polyethylene Furanoate (PEF) due to its wide-ranging advantages. PEF emerges as a sustainable substitute for conventional packaging materials such as polyethylene terephthalate (PET). Its exceptional ability to resist gases like oxygen and carbon dioxide makes it an excellent choice for diverse packaging applications. PEF's impressive thermal and mechanical characteristics, alongside its recyclability and renewable origin, contribute to reducing environmental impact. This positions PEF as an eco-friendly alternative to standard plastics. Bottles segment is projected to grow at fastest CAGR, in terms of value, during the forecast period. Polyethylene furanoate (PEF) emerges as a promising contender in the bottle market, providing an eco-conscious substitute for conventional plastics such as polyethylene terephthalate (PET). Sourced from plants, PEF offers sustainability and heightened barrier properties, preserving beverage quality and extending shelf life. Its lightweight composition not only reduces material consumption but also cuts down on transportation expenses. While PEF aligns with current recycling systems, challenges including production scalability, cost-effectiveness, regulatory compliance, and consumer acceptance remain pivotal hurdles. **Request Sample Pages: [https://www.marketsandmarkets.com/requestsampleNew.asp?id=183927881 ](https://www.marketsandmarkets.com/requestsampleNew.asp?id=183927881 )** Asia Pacific is expected to be the fastest growing market for PEF during the forecast period, in terms of value. The markets of Asia Pacific are registering high growth, and the trend is projected to continue during the forecast period. Shifting consumer preferences toward sustainable products plays a pivotal role. With heightened environmental consciousness, consumers here are actively seeking eco-friendly alternatives, presenting a substantial demand for PEF due to its renewable sourcing and potential biodegradability. The region's robust economic growth and rapid urbanization fuel a surge in packaged goods consumption, particularly beverages. As disposable incomes rise and lifestyles evolve, there's an escalating demand for innovative, sustainable packaging solutions like PEF to meet these changing consumer needs. Key Players Agreement and expansions are the major growth strategies adopted by the key players in the market. The key global players in the PEF market include Avantium NV (Netherland), Sulzer (Switzerland), AVA Biochem (Switzerland), ALPLA Group (Austria), Swicofil (Switzerland), Origin Materials (US), Toyobo Co., Ltd. (Japan), Danone (France), Mitsui & Co. (Japan), Eastman (US).
aryanbo91040102
1,878,468
How (Not) To Use AI When Learning to Code
I remember the first time that I used ChatGPT. I was at at a friend's house for a board game night...
0
2024-06-06T15:00:00
https://dev.to/nmiller15/how-not-to-use-ai-when-learning-to-code-4jgf
ai, beginners, learning, saas
I remember the first time that I used ChatGPT. I was at at a friend's house for a board game night and this new, game-changing technology had just been released. We passed my phone around the room and generated a whole script for a new Batman movie! That was before ChatGPT allowed you to save conversations, so our groundbreaking new piece of cinema never saw the light of day. We've been blown away by what AI can do over the past few years, including its ability to write code, and write it fast! I'm not a catastrophist who thinks that AI is going to take over the writing of codebases everywhere, in fact, I think that the AI movement is actually *more* of a reason to learn how to speak the language of computers in 2024. If you're learning to code right now, AI should be a tool in your toolbelt, but without care, you may become a lazy programmer. ## The Temptation You've just had a great idea! An app that tracks art prices and alerts you to deals in your area. (Someone might want it, I don't know). You sit down for your first planning session for this application, and you realize that not only are you going to have to design a front-end that artistic people will find pleasing to look at, but you'll need to find an API to work with and integrate a dataset with your front-end, and manage location data for all of your users, and oh yeah, you need to manage all your user data… You're overwhelmed, quickly. You're just learning to code. So you have an idea, just tell ChatGPT to do it for you! So you type a prompt in. You may have to ask it multiple times over, but it will eventually generate all the code you need to eventually construct your application. Great! You're done, but what did you learn? ## The Problem Your app might work, but there is a huge problem with building something this way. Namely, you don’t understand it! If your goal is to actually learn how to work with modern programming technologies, you have to work with it, and struggle with it, and break through the wall of error messages to a deeper understanding of how these things work. Maybe you're saying, "I don't really care if I learned it, it works!" That may be true, but can you really put that into production with confidence? It works, yes, but it only works *for now*, or *in these defined cases*. And as soon as something breaks, you don't know *why* it works, or what went wrong, or importantly, how you can fix it! What about when there is a security vulnerability that is discovered by a malicious actor? It would be dangerous and irresponsible to collect and store user information in a system that you cannot secure or fix. "But, it's AI! The collective knowledge of the internet has created this!” Ah, yes. The old "if it's on the Internet, it must be true." Here's the issue, Artificial Intelligence emulates some of the greatest feats of the human brain: the ability to connect disparate information, the ability to be creative (arguably), the ability to analyze data. But, it also inherits the ability to be incorrect, to make assumptions that might be baseless, to draw conclusions from data that seem obvious but on closer inspection are inaccurate. I, myself, have prompted ChatGPT to write a function for me that comes out the other side completely unusable. AI will continue to improve, and the code that it produces will become more and more accurate these models continue to be trained. I have no doubt that the prompts that we give machines will get us closer and closer to the results that we’re looking for. But, the need for programming is never going to leave us completely. Programming is not just writing code, it is the ability to solve difficult problems. There will always be a market for that, and AI is another of the tools that will be used *by* programmers to solve those problems. ## So, I Can't Use AI When I Code? If your goal is to learn and gain understanding, having ChatGPT write your code is not going to bring you closer to that goal, but that doesn't mean that there's not useful ways to integrate it and other AI into your learning. Here are a couple ways that I've found it beneficial. ### 1. Linting You know what's not necessarily making me a better programmer? Finding that extra semi-colon or counting the number of brackets that need to be at the end of my function to properly close it out. (However, learning to structure your code for readability is a good skill to develop). Linters built into text editors are typically good at finding the issues and fixing them for you or notifying you before they cause errors, but have you ever just had all of your code underlined in red and you can't find out why? This is a great time to copy it and ask your resident chatbot to "Act as a linter and tell me what syntax I got wrong." ### 2. Brainstorming I've found that AI is a great tool for idea generation, even outside of coding. You have a lot of ideas that sometimes you need the right question asked for you to uncover. I regularly use AI as a journaling prompt system to get me thinking about my goals, and problems that I have to help me work around a solution. We can use this in the beginning stages of a feature to find edge cases to plan for, and to intentionally bend ourselves outside of what we might normally think. Use prompts like, "Ask me a set of questions to help me identify the most useful features to implement and a target audience." "Guide me through a brainstorming session, give me helpful questions to answer." "I am thinking of solving [X] problem with [Y], is there anything that I'm missing?" The key here is that you're still doing the work! This would be the same as getting in the room with someone else and getting input on some ideas, or bouncing your ideas off of another person! If you tried to do partner programming and expected your partner to do all the work, you wouldn't have a partner for long (and you wouldn't be learning anything)! ### 3. Documentation While you're coding out a web page, or a new feature implementation, you're going to forget what arguments are taken by a method, or whether you were supposed to use brackets or curly braces. Programmers have been going to documentation for these questions since programming has existed (and then later to Stack Overflow). But, AI, as a data analysis tool, is very powerful for these types of questions. Looking up boilerplate doesn't make you a better or worse programmer, it's a task that you will inevitably have to do and AI can save you plenty of time in this regard! Be careful, because you can ask it to do more for you than just generate the boilerplate! But, there's no harm in using reference material for learning and AI can be a great reference tool! Use prompts like, "Please provide for me the redux boilerplate for configureStore." "What are the built-in methods for the Math object?" "What is the default file path for my nginx config file?" ## Conclusion AI is a game-changer, but it can also be a short-cut to programming that will cause you to lack understanding of your own codebases and projects. AI is a tool that will speed up the completion of many different tasks, but, it is not a replacement for our own problem-solving ability. The phrase that is floating around the internet rings true: AI will not replace you, the worker using AI will. So, be a programmer who uses AI to learn to code, but don't skip over the learning process using AI. Learning is difficult. If it isn't, then you're probably not learning anything. As with many new technologies, AI will be a tool used by many, the goal then is to learn to use it effectively.
nmiller15
1,879,337
Cărucioarele 3 în 1 Versatilitate și Confort de la IdealBebe.ro
Cărucioarele 3 în 1 au devenit alegerea preferată a multor părinți datorită versatilității și...
0
2024-06-06T14:52:37
https://dev.to/idealbebe/carucioarele-3-in-1-versatilitate-si-confort-de-la-idealbebero-3ee
[Cărucioarele 3 în 1](https://idealbebe.ro/) au devenit alegerea preferată a multor părinți datorită versatilității și confortului pe care le oferă. Aceste cărucioare sunt concepute pentru a acoperi toate etapele de dezvoltare ale copilului, de la nou-născut până la copilul mic, asigurându-i siguranța și confortul necesar în fiecare moment. La IdealBebe.ro, găsești o gamă variată de cărucioare 3 în 1, menite să răspundă celor mai exigente cerințe. În acest articol, îți vom prezenta beneficiile și caracteristicile acestor produse, pentru a te ajuta să faci cea mai bună alegere pentru micuțul tău. 1. Versatilitate pentru Fiecare Etapă de Creștere Unul dintre principalele avantaje ale cărucioarelor 3 în 1 de la IdealBebe.ro este versatilitatea lor. Acestea sunt proiectate pentru a se transforma și adapta în funcție de nevoile copilului pe măsură ce crește, oferind funcționalități multiple într-un singur produs. Caracteristici principale: Landou pentru nou-născuți: Oferă o poziție perfect plată, ideală pentru somnul sănătos al nou-născutului. Scaun auto inclus: Permite transportul în siguranță al bebelușului în mașină, fiind ușor de montat și demontat. Cărucior sport: Pentru copiii mai mari, căruciorul sport oferă confort și susținere, fiind ușor de manevrat și ideal pentru plimbările zilnice. 2. Confort Superior pentru Micuțul Tău La IdealBebe.ro, punem un accent deosebit pe confortul copilului tău. [Cărucioarele 3 în 1](https://idealbebe.ro/) sunt echipate cu materiale de înaltă calitate, moi și hipoalergenice, care asigură o experiență plăcută și relaxantă în timpul plimbărilor. Caracteristici de confort: Saltele și pernuțe moi: Asigură un suport adecvat pentru spatele și capul copilului, prevenind disconfortul. Huse lavabile: Ușor de întreținut, menținând căruciorul curat și igienic. Sistem de ventilație: Oferă o circulație optimă a aerului, prevenind supraîncălzirea pe timp de vară. 3. Siguranța în Prim-Plan Siguranța copilului tău este prioritatea noastră principală. Cărucioarele 3 în 1 de la IdealBebe.ro sunt dotate cu tehnologii avansate și caracteristici de siguranță pentru a-ți oferi liniștea necesară în timpul utilizării. Caracteristici de siguranță: Centuri de siguranță reglabile în 5 puncte: Asigură fixarea fermă a copilului în cărucior, prevenind accidentele. Sistem de frânare centralizat: Permite oprirea rapidă și sigură a căruciorului în orice moment. Cadru robust și stabil: Fabricat din materiale de calitate, asigură durabilitate și rezistență în timp. 4. Design Elegant și Funcționalitate Pe lângă siguranță și confort, cărucioarele 3 în 1 de la IdealBebe.ro se remarcă printr-un design modern și elegant, adaptat nevoilor părinților activi și stilului de viață urban. Aspecte de design și funcționalitate: Design ergonomic: Asigură o manevrare ușoară și confortabilă, atât pentru părinți, cât și pentru copii. Roți pivotante: Facilită deplasarea pe diferite tipuri de teren, oferind o experiență lină și fără efort. Pliaje compacte: Ușor de transportat și depozitat, economisind spațiu în casă sau în mașină. Sfaturi pentru Alegerea Căruciorului 3 în 1 Când alegi un [cărucior 3 în 1](https://idealbebe.ro/) de la IdealBebe.ro, este important să ții cont de câteva aspecte esențiale: Nevoile zilnice: Gândește-te la stilul tău de viață și la modul în care vei folosi căruciorul. Confortul copilului: Asigură-te că modelul ales oferă suport și confort adecvat pentru fiecare etapă de creștere. Siguranța: Verifică toate sistemele de siguranță ale căruciorului, inclusiv centurile și frânele. De Ce Să Alegi IdealBebe.ro? La IdealBebe.ro, suntem dedicați să oferim produse de cea mai înaltă calitate, care să răspundă așteptărilor și nevoilor părinților moderni. Iată câteva motive pentru care ar trebui să alegi să cumperi un cărucior 3 în 1 de la noi: Calitate garantată: Toate produsele noastre sunt certificate și respectă cele mai înalte standarde de siguranță și calitate. Prețuri competitive: Beneficiezi de oferte speciale și reduceri atractive, fără a compromite calitatea produselor. Consultanță specializată: Echipa noastră de experți este întotdeauna disponibilă pentru a te ajuta să faci cea mai bună alegere pentru copilul tău. Alegerea unui cărucior 3 în 1 de la IdealBebe.ro este o investiție în siguranța, confortul și fericirea copilului tău. Descoperă acum gama noastră variată de cărucioare și bucură-te de plimbări plăcute și sigure alături de micuțul tău. IdealBebe.ro este partenerul tău de încredere în această decizie importantă!
idealbebe
1,879,335
Deploy Postgres on any Kubernetes using CloudNativePG
There are many ways to setup Postgres in Kubernetes, but all methods will not solve all problems,...
0
2024-06-06T14:47:40
https://dev.to/gangaprasad_07bcb0289de5d/deploy-postgres-on-any-kubernetes-using-cloudnativepg-3bn4
kubernetes, postgres, devops
There are many ways to setup Postgres in Kubernetes, but all methods will not solve all problems, here are some. 1. Backup data to object storage 2. On-demand backup 3. Schedule backup 4. Point-in-time recovery (PITR) The best method to counter these problems is [CloudNativePG](https://cloudnative-pg.io/) operator, this operator manages [PostgreSQL](https://www.postgresql.org/) workloads on any supported [Kubernetes](https://kubernetes.io/) cluster. **pre-requisite**: any running Kubernetes cluster **Step-1**:  Install CloudNativePG operator on your running Kubernetes, best way to deploy using [Helm](https://helm.sh/). ``` helm repo add cnpg https://cloudnative-pg.github.io/charts helm upgrade - install cnpg \ - namespace cnpg-system \ - create-namespace \ cnpg/cloudnative-pg ``` This will install cnpg operator in cnpg-system namespace in your Kubernetes cluster, to check the pod is running or not run below command ``` kubectl get pods -l app.kubernetes.io/name=cloudnative-pg -n cnpg-system ``` **Step-2**: cnpg will also install new Kubernetes resource called Cluster representing a PostgreSQL cluster made up of a single primary and an optional number of replicas that co-exist in a chosen Kubernetes namespace. Once the operator is running, now we have to install Postgres in Kubernetes cluster using resource called Cluster created by cnpg. we use the manifest below cluster.yaml to create postgres cluster ``` apiVersion: v1 data: password: VHhWZVE0bk44MlNTaVlIb3N3cU9VUlp2UURhTDRLcE5FbHNDRUVlOWJ3RHhNZDczS2NrSWVYelM1Y1U2TGlDMg== username: YXBw kind: Secret metadata: name: cluster-example-app-user type: kubernetes.io/basic-auth --- apiVersion: v1 data: password: dU4zaTFIaDBiWWJDYzRUeVZBYWNCaG1TemdxdHpxeG1PVmpBbjBRSUNoc0pyU211OVBZMmZ3MnE4RUtLTHBaOQ== username: cG9zdGdyZXM= kind: Secret metadata: name: cluster-example-superuser type: kubernetes.io/basic-auth --- apiVersion: v1 kind: Secret metadata: name: backup-creds data: ACCESS_KEY_ID: a2V5X2lk ACCESS_SECRET_KEY: c2VjcmV0X2tleQ== --- apiVersion: postgresql.cnpg.io/v1 kind: Cluster metadata: name: cluster-example-full spec: description: "Example of cluster" imageName: ghcr.io/cloudnative-pg/postgresql:16.2 instances: 3 startDelay: 300 stopDelay: 300 primaryUpdateStrategy: unsupervised postgresql: parameters: shared_buffers: 256MB pg_stat_statements.max: '10000' pg_stat_statements.track: all auto_explain.log_min_duration: '10s' bootstrap: initdb: database: app owner: app secret: name: cluster-example-app-user enableSuperuserAccess: true superuserSecret: name: cluster-example-superuser storage: storageClass: standard size: 1Gi backup: barmanObjectStore: destinationPath: s3://cluster-example-full-backup/ endpointURL: http://custom-endpoint:1234 s3Credentials: accessKeyId: name: backup-creds key: ACCESS_KEY_ID secretAccessKey: name: backup-creds key: ACCESS_SECRET_KEY wal: compression: gzip encryption: AES256 data: compression: gzip encryption: AES256 immediateCheckpoint: false jobs: 2 retentionPolicy: "30d" resources: requests: memory: "512Mi" cpu: "1" limits: memory: "1Gi" cpu: "2" affinity: enablePodAntiAffinity: true topologyKey: failure-domain.beta.kubernetes.io/zone nodeMaintenanceWindow: inProgress: false reusePVC: false ``` In the above manifest we are creating two secrets because one secret is for initial database and another secret is for superuser access, you can read more about roles in Postgres [here](https://www.postgresql.org/docs/current/database-roles.html) The Third secret we created to access object store, here we are using AWS S3. The supported object storages can be found [here](https://cloudnative-pg.io/documentation/1.23/appendixes/object_stores/) Now apply the manifest in your Kubernetes cluster ``` kubectl create -f cluster.yaml -n namespace ``` Now you can see postgres pods are running in your Kubernetes cluster ``` kubectl get pods -n namespace ``` You can get postgres cluster by ``` kubectl get cluster -n namespace ``` In the next tutorial we will configure On-demand backup, schedule backup and recovery from existing data
gangaprasad_07bcb0289de5d
1,879,334
Secrets management with Azure Key Vault
Introduction The Azure Key Vault service is designed to safeguard cryptographic keys and...
0
2024-06-06T14:46:18
https://dev.to/borisgigovic/secrets-management-with-azure-key-vault-15dg
azuresecurity, keyvault, secretsmanagement, cloudservices
## Introduction The Azure Key Vault service is designed to safeguard cryptographic keys and secrets used by cloud applications and services. This article delves into the intricacies of Azure Key Vault, exploring its features, benefits, and use cases in detail. ### What is Azure Key Vault? Azure Key Vault is a cloud service provided by Microsoft Azure that allows you to securely store and manage sensitive information such as cryptographic keys, secrets, and certificates. It is designed to help you control access to these critical assets and to monitor their usage to ensure they are used securely and in compliance with your organization's policies. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/da5sla3up9k5aw47i4q4.png) ### Key Features of Azure Key Vault #### Secrets Management **Storage of Secrets:** Azure Key Vault enables you to store and tightly control access to tokens, passwords, certificates, API keys, and other secrets. **Versioning:** It allows for the management of multiple versions of a secret, making it possible to maintain and retrieve historical data if needed. #### Key Management **Key Storage:** Store cryptographic keys securely and manage their access. **Key Generation and Lifecycle Management:** Azure Key Vault can generate keys and manage their lifecycle, including rotation and expiration. **Support for Multiple Algorithms:** It supports various cryptographic algorithms, ensuring flexibility and security for different use cases. #### Certificate Management **Certificate Issuance and Renewal:** Automate the process of issuing and renewing certificates. **Integration with Certificate Authorities (CAs):** Seamlessly integrate with public and private CAs to manage the lifecycle of your certificates. #### Access Policies **Role-Based Access Control (RBAC):** Implement fine-grained access control to ensure only authorized users and applications can access the keys, secrets, and certificates. **Integration with Azure Active Directory (AAD):** Use AAD to manage and enforce access policies. #### Monitoring and Logging **Activity Logging:** Track and log all activities related to your Key Vault for security and compliance purposes. **Alerts and Notifications:** Set up alerts to monitor the health and usage of your Key Vault resources. #### How Azure Key Vault Works Creating a Key Vault The first step is to create a Key Vault in your Azure subscription. This vault serves as a secure container for storing keys, secrets, and certificates. #### Storing Secrets You can store various types of secrets, including API keys, passwords, and connection strings. These secrets are encrypted using keys managed by Azure Key Vault. #### Managing Keys You can import, generate, and manage cryptographic keys within the Key Vault. These keys can be used for data encryption, digital signing, and other cryptographic operations. #### Issuing and Managing Certificates Azure Key Vault can automate the issuance and renewal of certificates, reducing the manual effort and risk of certificate expiration. #### Accessing Secrets and Keys Applications and services can access the secrets and keys stored in Azure Key Vault using APIs. Access is controlled through Azure Active Directory and RBAC. #### Monitoring and Auditing All access to the Key Vault is logged, and these logs can be used to monitor for unauthorized access or suspicious activities. ### Use Cases #### Securely Storing Application Secrets A web application needs to connect to a database and requires a connection string and API keys for third-party services. By storing these secrets in Azure Key Vault, the application can retrieve them securely at runtime. This approach eliminates the need to store sensitive information in the application's codebase or configuration files, reducing the risk of exposure. #### Managing Cryptographic Keys for Data Encryption A financial institution needs to encrypt sensitive customer data stored in Azure SQL Database. Azure Key Vault can generate and manage the cryptographic keys used for encryption. The database can be configured to use these keys, ensuring that the data is encrypted at rest and only accessible by authorized applications. #### Automating Certificate Management An e-commerce website requires SSL/TLS certificates to secure its transactions. Azure Key Vault can automate the issuance and renewal of these certificates through integration with a Certificate Authority. This automation ensures that the certificates are always up-to-date and reduces the risk of manual errors leading to certificate expiration. #### Implementing Secure DevOps Practices A development team uses Azure Key Vault to store secrets and keys required for their CI/CD pipelines. By integrating Key Vault with their DevOps tools, they can securely access these secrets during the build and deployment processes. This practice enhances the security of the DevOps pipeline and ensures that sensitive information is not exposed in the source code or build scripts. ### Benefits of Using Azure Key Vault #### Enhanced Security Azure Key Vault provides a secure way to store and manage sensitive information, reducing the risk of data breaches and unauthorized access. #### Simplified Management It simplifies the management of secrets, keys, and certificates by providing a centralized platform with automated workflows. #### Compliance and Auditing Key Vault’s logging and monitoring capabilities help organizations meet compliance requirements by providing detailed audit trails of all activities. #### Cost Efficiency By automating the management of certificates and keys, Azure Key Vault reduces the operational overhead and minimizes the risk of costly errors. ### Conclusion Azure Key Vault is a critical tool for managing and securing sensitive information in the cloud. By providing a secure and centralized platform for storing keys, secrets, and certificates, it enhances security, simplifies management, and helps organizations meet compliance requirements. Whether you are securing application secrets, managing cryptographic keys, or automating certificate issuance, Azure Key Vault offers a robust solution to meet your needs. In case of further interest in Azure Key Vault, Eccentrix provides [certified training](https://www.eccentrix.ca/en/courses/microsoft/security/microsoft-certified-azure-security-engineer-associate-az500) on the topic with practical activities, also preparatory for the certification exam.
borisgigovic
1,878,739
AWS SnapStart - Part 22 Measuring cold and warm starts with Java 17 using synchronous HTTP clients
Introduction In the previous parts we've done many measurements with AWS Lambda using Java...
24,979
2024-06-06T14:43:45
https://dev.to/aws-builders/aws-snapstart-part-22-measuring-cold-and-warm-starts-with-java-17-using-synchronous-http-clients-2k0l
aws, java, serverless, coldstart
## Introduction In the previous parts we've done many measurements with AWS Lambda using Java 17 runtime with and without using AWS SnapStart and additionally using SnapStart and priming DynamoDB invocation : - cold starts using [different deployment artifact sizes]( https://dev.to/aws-builders/aws-snapstart-part-18-measuring-cold-starts-with-java-17-using-different-deployment-artifact-sizes-5092) - cold starts and deployment time using [different Lambda memory settings ]( https://dev.to/aws-builders/aws-snapstart-part-19-measuring-cold-starts-and-deployment-time-with-java-17-using-different-lambda-memory-settings-30ml) - warm starts [using different Lambda memory settings](https://dev.to/aws-builders/aws-snapstart-part-20-measuring-warm-starts-with-java-17-using-different-lambda-memory-settings-1p7j) - cold and warm starts [using different compilation options](https://dev.to/aws-builders/aws-snapstart-part-21-measuring-cold-starts-and-deployment-time-with-java-17-using-different-compilation-options-o14) In this article we'll now add another dimension to our Java 17 measurements : the choice of HTTP Client implementation. Starting from AWS SDK for Java version 2.22 AWS added support for their own implementation of the [synchronous CRT HTTP Client](https://github.com/aws/aws-sdk-java-v2/issues/3343). The asynchronous CRT HTTP client has been generally available since February 2023. In this article we'll explore synchronous HTTP clients first and leave asynchronous ones for the next article. I will also compare it with the same measurements for Java 21 already performed in the article [Measuring cold and warm starts with Java 21 using different synchronous HTTP clients]( https://dev.to/aws-builders/aws-snapstart-part-15-measuring-cold-and-warm-starts-with-java-21-using-different-synchronous-http-clients-579o) ## Measuring cold and warm starts with Java 17 using synchronous HTTP clients In our experiment we'll re-use the application introduced in [part 8](https://dev.to/aws-builders/measuring-lambda-cold-starts-with-aws-snapstart-part-8-measuring-with-java-17-21db) for this. Here is the code for the [sample application](https://github.com/Vadym79/AWSLambdaJavaSnapStart/tree/main/pure-lambda-17). There are basically 2 Lambda functions which both respond to the API Gateway requests and retrieve product by id received from the API Gateway from DynamoDB. One Lambda function GetProductByIdWithPureJava17Lambda can be used with and without SnapStart and the second one GetProductByIdWithPureJava17LambdaAndPriming uses SnapStart and DynamoDB request invocation priming. As we did our measurements for Java 17 in the previous articles of the series, we have always used the default HTTP Client implementation which is [Apache HTTP Client](https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/http-configuration.html) (we'll use the measurements for the comparison in this article), now we'll explore 2 other options as well. There are now **3 synchronous** HTTP Clients implementations available in the AWS SDK for Java. 1. Url Connection 2. Apache (Default) 3. AWS CRT This is the order for the look up and set of synchronous HTTP Client in the classpath. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/zpfwzoikpzibo5v10iji.png) Let's figure out how to configure the HTTP Client. There are 2 places to do it : [pom.xml](https://github.com/Vadym79/AWSLambdaJavaSnapStart/blob/main/pure-lambda-17/pom.xml) and [DynamoProductDao](https://github.com/Vadym79/AWSLambdaJavaSnapStart/blob/main/pure-lambda-17/src/main/java/software/amazonaws/example/product/dao/DynamoProductDao.java) Let's consider 3 scenarios: **Scenario 1)** Url Connection HTTP Client. Its configuration looks like this: In the pom.xml the only enabled HTTP Client dependency has to be: ``` <dependency> <groupId>software.amazon.awssdk</groupId> <artifactId>url-connection-client</artifactId> </dependency> ``` In DynamoProductDao the DynamoDBClient should be created like this: ``` DynamoDbClient.builder() .region(Region.EU_CENTRAL_1) .httpClient(UrlConnectionHttpClient.create()) .overrideConfiguration(ClientOverrideConfiguration.builder() .build()) .build(); ``` **Scenario 2)** Apache HTTP Client. Its configuration looks like this: In the pom.xml the only enabled HTTP Client dependency has to be: ``` <dependency> <groupId>software.amazon.awssdk</groupId> <artifactId>apache-client</artifactId> </dependency> ``` In DynamoProductDao the DynamoDBClient should be created like this: ``` DynamoDbClient.builder() .region(Region.EU_CENTRAL_1) .httpClient(ApacheHttpClient.create()) .overrideConfiguration(ClientOverrideConfiguration.builder() .build()) .build(); ``` **Scenario 3)** AWS CRT synchronous HTTP Client. Its configuration looks like this: In the pom.xml the only enabled HTTP Client dependency has to be: ``` <dependency> <groupId>software.amazon.awssdk</groupId> <artifactId>aws-crt-client</artifactId> </dependency> ``` In DynamoProductDao the DynamoDBClient should be created like this: ``` DynamoDbClient.builder() .region(Region.EU_CENTRAL_1) .httpClient(AwsCrtHttpClient.create()) .overrideConfiguration(ClientOverrideConfiguration.builder() .build()) .build(); ``` For the sake of simplicity, we create all HTTP Clients with their default settings. Of course, there is the optimization potential there to figure out the right HTTP Client settings. The results of the experiment below were based on reproducing more than 100 cold and approximately 100.000 warm starts with experiment which ran for approximately 1 hour. For it (and experiments from my previous article) I used the load test tool [hey](https://github.com/rakyll/hey), but you can use whatever tool you want, like [Serverless-artillery](https://www.npmjs.com/package/serverless-artillery) or [Postman](https://www.postman.com/). I ran all these experiments for all 3 scenarios using 2 different compilation options in the AWS SAM template.yaml each: 1. no options (tiered compilation will take place) 2. JAVA_TOOL_OPTIONS: "-XX:+TieredCompilation -XX:TieredStopAtLevel=1" (client compilation without profiling) We found out in the article [Measuring cold and warm starts with Java 17 using different compilation options ](https://dev.to/aws-builders/aws-snapstart-part-21-measuring-cold-starts-and-deployment-time-with-java-17-using-different-compilation-options-o14) that with them both we've got the lowest cold and warm start times. We’ve also got good results with "-XX:+TieredCompilation -XX:TieredStopAtLevel=2” compilation option but I haven’t done any measurement with this option yet. Let's look into the results of our measurements. **Cold (c) and warm (m) start time with compilation option "tiered compilation" without SnapStart enabled in ms:** |Scenario Number| c p50 | c p75 | c p90 |c p99 | c p99.9| c max |w p50 | w p75 | w p90 |w p99 | w p99.9 | w max | |-----------|----------|-----------|----------|----------|----------|----------|-----------|----------|----------|----------|----------|----------| |Url Connection|2615.48|2672.78|2726.22|3660.9|3817.73|3993.28|6.82|7.57|8.80|22.01|50.82|2172.5| |Apache|2831.33|2924.85|2950.12|3120.34|3257.03|3386.67|5.73|6.50|7.88|20.49|49.62|1355.08| |AWS CRT|2340.71|2406.5|2482.01|2578.71|2721.06|2890.88|5.73|6.61|8.00|21.07|70.39|980.93| **Cold (c) and warm (m) start time with compilation option "-XX:+TieredCompilation -XX:TieredStopAtLevel=1" (client compilation without profiling) without SnapStart enabled in ms:** |Scenario Number| c p50 | c p75 | c p90 |c p99 | c p99.9| c max |w p50 | w p75 | w p90 |w p99 | w p99.9 | w max | |-----------|----------|-----------|----------|----------|----------|----------|-----------|----------|----------|----------|----------|----------| |Url Connection|2610.59|2700.55|2800.53|3028.36|3184.08|3326.09|7.04|7.88|9.31|22.55|55.04|1286.36| |Apache|2880.53|2918.79|2974.45|3337.29|3515.86|3651.65|6.11|7.05|8.94|23.54|62.99|1272.96| |AWS CRT|2268.78|2314.49|2341.29|2461.23|2613.98|2754.08|5.55|6.30|7.57|20.49|75.70|1010.95| **Cold (c) and warm (m) start time with compilation option "tiered compilation" with SnapStart enabled without Priming in ms:** |Scenario Number| c p50 | c p75 | c p90 |c p99 | c p99.9| c max |w p50 | w p75 | w p90 |w p99 | w p99.9 | w max | |-----------|----------|-----------|----------|----------|----------|----------|-----------|----------|----------|----------|----------|----------| |Url Connection|1510.72|1566.07|1797.68|2006.60|2012.63|2014.23|6.93|7.87|9.38|23.92|935.81|1343.25| |Apache|1506.20|1577.06|1845.01|2010.62|2280.46|2281|5.82|6.72|8.39|22.81|798.46|1377.54| |AWS CRT|1196.86|1313.44|1584.96|1781.58|1872.88|1873.52|5.55|6.41|7.87|21.40|681.26|1164.44| **Cold (c) and warm (m) start time with compilation option "-XX:+TieredCompilation -XX:TieredStopAtLevel=1" (client compilation without profiling) with SnapStart enabled without Priming in ms:** |Scenario Number| c p50 | c p75 | c p90 |c p99 | c p99.9| c max |w p50 | w p75 | w p90 |w p99 | w p99.9 | w max | |-----------|----------|-----------|----------|----------|----------|----------|-----------|----------|----------|----------|----------|----------| |Url Connection|1567.63|1647.96|1889.80|2026.76|2075.97|2076.57|7.10|8.00|9.69|25.41|953.93|1190.54| |Apache|1521.33|1578.64|1918.35|2113.65|2115.77|2117.42|6.01|7.05|8.94|23.92|101.41|1077.45| |AWS CRT|11176.70|1259.45|1621.82|1854.25|1856.11|1857.59|5.55|6.30|7.63|21.40|670.53|990.96| **Cold (c) and warm (m) start time with compilation option "tiered compilation" with SnapStart enabled and with DynamoDB invocation Priming in ms:** |Scenario Number| c p50 | c p75 | c p90 |c p99 | c p99.9| c max |w p50 | w p75 | w p90 |w p99 | w p99.9 | w max | |-----------|----------|-----------|----------|----------|----------|----------|-----------|----------|----------|----------|----------|----------| |Url Connection|666.97|745.23|965.42|1084.10|1108.20|1108.66|7.21|8.07|9.61|24.22|145.49|377.43| |Apache|708.90|790.50|960.61|1041.61|1148.80|1149.91|5.64|6.61|8.38|21.07|141.53|373.37| |AWS CRT|679.76|851.18|1026.11|1102.68|1111.53|1111.64|5.92|6.72|8.26|22.09|171.22|1065.32| **Cold (c) and warm start (m) time with compilation option "-XX:+TieredCompilation -XX:TieredStopAtLevel=1" (client compilation without profiling) with SnapStart enabled and with DynamoDB invocation Priming in ms:** |Scenario Number| c p50 | c p75 | c p90 |c p99 | c p99.9| c max |w p50 | w p75 | w p90 |w p99 | w p99.9 | w max | |-----------|----------|-----------|----------|----------|----------|----------|-----------|----------|----------|----------|----------|----------| |Url Connection|673.67|748.22|946.31|1184.96|1213.73|1214.34|7.16|8.13|9.83|25.89|141.53|275.35| |Apache|692.79|758.00|1003.80|1204.06|1216.15|1216.88|6.21|7.27|9.38|25.09|103.03|256.65| |AWS CRT|640.19|693.49|1022.02|1229.60|1306.90|1307.14|5.64|6.51|8.13|22.81|171.22|877.24| ## Conclusion In terms of the HTTP Client choice for Java 17, AWS CRT HTTP Client is preferred choice in case SnapStart isn't enabled or SnapStart is enabled but no priming is applied. In case of priming of the DynamoDB invocation, the results in terms of the cold starts for all 3 HTTP Clients are close to each other as the initialization of the DynamoDB Client with the HTTP Client and the most expensive first invocation (priming) happens already during the deployment phase of the Lambda function and doesn't impact the further invocations that much. The Apache HTTP Client is probably the most powerful choice, but it shows the worst results for the cold starts for SnapStart not being enabled. We observed the same also for Java 21, see the measurements in the article [Measuring cold and warm starts with Java 21 using different synchronous HTTP clients]( https://dev.to/aws-builders/aws-snapstart-part-15-measuring-cold-and-warm-starts-with-java-21-using-different-synchronous-http-clients-579o). The warm execution times are more or less close to each other for all 3 HTTP clients and compilation options and very a bit in favor of one or another HTTP Clients depending on the percentile and compilation option. We observed the same also for Java 21 Can we reduce the cold start a bit further? From our article [Measuring cold starts with Java 17 using different deployment artifact sizes]( https://dev.to/aws-builders/aws-snapstart-part-18-measuring-cold-starts-with-java-17-using-different-deployment-artifact-sizes-5092) we know that smaller deployment artifact sizes lead to the lower cold start times. The usage of AWS CRT HTTP Client adds 18 MB to the deployment artifact size for our sample application (total size 32MB versus 14 MB for URL Connection and Apache HTTP Clients). If we look into the deployment artifact with AWS CRT HTTP Client, we'll discover the following additional packages for each operating system : linux, osx and windows. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/sydpc8he6lah1bvgooa9.png) If we take a look into those folders, we'll see for example the following content for the linux folder (the same applies for windows and osx folders) : ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7fkcscs1wmty12jvjcdv.png) As we see the content of such folders is natives file for each operating system and processor architecture: for osx it's libaws-crt-jni.dylib file, for windows - aws-crt-jni.dll and for linux - libaws-crt-jni.so. If we already know that we'll run our Lambda only on Linux x86 architecture, we can delete the osx and windows folders completely and subfolders for arm architecture in the linux folder. This will reduce the deployment artifact size from 32 to 19 MB for AWS CRT HTTP Client and further reduce the cold start time a bit. The choice of HTTP Client is not only about minimizing cold and warm starts. The decision is much more complex end also depends on the functionality of the HTTP Client implementation and its settings, like whether it supports HTTP/2. AWS publshed the decision tree which [HTTP client to choose](https://docs.aws.amazon.com/sdk-for-java/latest/developer-guide/http-configuration.html) depending on the criteria. In the next article of the series we'll make the same measurements for Java 17 but using the asynchronous HTTP Clients. **Update on 06.06.2024**. For the CRT client we can set classifier (i.e. linux-x86_64) in our POM file to only pick the relevant binary for our platform. See [here](https://github.com/awslabs/aws-crt-java?tab=readme-ov-file#platform-specific-jars). Big thanks to [Maximilian Schellhorn](https://www.linkedin.com/in/maxschell/) for the hint!
vkazulkin
1,881,957
How to change the Screen Resolution of a Guest-OS (Ubuntu) in Hyper-V with PowerShell on Windows 11
TL;DR To change the screen resolution of a VM in Hyper-V, use PowerShell. The command...
0
2024-06-27T22:37:16
https://diegocarrasco.com/hyper-v-change-resolution-powershell/
hyperv, powershell, vm, windows11
--- title: How to change the Screen Resolution of a Guest-OS (Ubuntu) in Hyper-V with PowerShell on Windows 11 published: true date: 2024-06-06 14:40:54 UTC tags: hyperv,powershell,VM,Windows11 canonical_url: https://diegocarrasco.com/hyper-v-change-resolution-powershell/ --- ![](https://diegocarrasco.com/images/social-images/hyper-v-change-resolution-powershell.jpg) ### TL;DR To change the screen resolution of a VM in Hyper-V, use PowerShell. The command requires the VM name and the desired resolution. ### Context Unlike in VirtualBox, in Hyper-V I could not find a GUI option to change the screen resolution directly. Instead, I had to use PowerShell to adjust the display settings of your virtual machine. ### Steps 1. **Identify the VM Name** Find the name of your VM in Hyper-V Manager. (Search for Hyper-V Manager in the start menu to access it) ![Hyper-V Manager VM Name](https://diegocarrasco.com/images/hyper-v-maschine-name.png) 1. **Open PowerShell** Open a PowerShell terminal on your host machine. 1. **Execute the Command** Use the following PowerShell command, replacing `"Ubuntu 22.04 LTS2"` with your VM's name and adjusting the resolution as needed: ``` Set-VMVideo -VMName "Ubuntu 22.04 LTS2" -HorizontalResolution 1920 -VerticalResolution 1080 -ResolutionType Single ``` - **HorizontalResolution** : The width of the screen in pixels (e.g., 1920). - **VerticalResolution** : The height of the screen in pixels (e.g., 1080). - **ResolutionType** : Set to `Single` for a single monitor setup. ### References - [How to adjust virtual machine display resolution in Hyper-V](https://learn.microsoft.com/en-us/answers/questions/341631/how-to-adjust-virtual-machine-display-resolution-t) - [Hyper-V: Change Resolution](https://www.partitionwizard.com/news/hyper-v-change-resolution.html)
dacog
1,879,329
The difference between the P tag and the PRE tag in HTML
Hey, This day we will understand the difference between the p and the pre tags. Firstly, what is the...
0
2024-06-06T14:38:19
https://dev.to/tidycoder/the-difference-between-the-p-tag-and-the-pre-tag-in-html-15in
Hey, This day we will understand the difference between the p and the pre tags. Firstly, what is the rule of these two tags? These two tags are used to write paragraphs in HTML language, but the difference between the first and second tags, is how are treat the content of text. The P tag removes the useless spaces, and remove the returns to line, but if you want to return to line, you can use the <br/> tag. The PRE tag not removes the returns to line and the spaces, but if the width of his parent reduce, his width don't reduce. For this the PRE tag is not adaptable, but the P tag add returns to line to reduce his width if is necessary. Here a complete example to illustrate this: {% codepen https://codepen.io/TidyCoder/pen/QWRgrXx %}
tidycoder
1,879,328
12 Creative Toggle Designs for Your Inspiration (with Code) 🎨💖
Creating engaging and user-friendly interfaces is crucial in web and app development. Toggle...
0
2024-06-06T14:35:27
https://madza.hashnode.dev/12-creative-toggle-designs-for-your-inspiration-with-code
webdev, design, ui, inspiration
--- title: 12 Creative Toggle Designs for Your Inspiration (with Code) 🎨💖 published: true description: tags: webdev, design, ui, inspiration cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/51ivjvj0k0ii6av3303s.png canonical_url: https://madza.hashnode.dev/12-creative-toggle-designs-for-your-inspiration-with-code --- Creating engaging and user-friendly interfaces is crucial in web and app development. Toggle switches, though simple, play a significant role in enhancing user experience by providing an intuitive way to control settings. However, finding the perfect toggle design that is both functional and aesthetically pleasing can be a challenge for developers. This article addresses the problem by showcasing 12 creative examples with code. For developers, this collection offers valuable inspiration and practical implementation tips. These creative toggle designs help enhance the overall user experience and make your projects more visually appealing. All snippets are interactive, so feel free to try them out on the go. Hopefully, these will be useful for you! Let's dive in! --- ## 1. [Skillet Switch](https://codepen.io/jkantner/pen/rNqxNXW) By: [Jon Kantner](https://codepen.io/jkantner) {% codepen https://codepen.io/jkantner/pen/rNqxNXW %} ## 2. [Squishy Switch](https://codepen.io/nicolasjesenberger/pen/bGQwBYo) By: [Nicolas Jesenberger](https://codepen.io/nicolasjesenberger) {% codepen https://codepen.io/nicolasjesenberger/pen/bGQwBYo %} ## 3. [Colorful Theme Switch](https://codepen.io/jkantner/pen/eYPYppR) By: [Jon Kantner](https://codepen.io/jkantner) {% codepen https://codepen.io/jkantner/pen/eYPYppR %} ## 4. [Toothed Toggle](https://codepen.io/josetxu/pen/NWEPmGz) By: [Josetxu](https://codepen.io/josetxu) {% codepen https://codepen.io/josetxu/pen/NWEPmGz %} ## 5. [Merging Letter Toggle](https://codepen.io/jkantner/pen/gOZrOQm) By: [Jon Kantner](https://codepen.io/jkantner) {% codepen https://codepen.io/jkantner/pen/gOZrOQm %} ## 6. [Gooey Toggle Switch](https://codepen.io/nicolasjesenberger/pen/xxmbvxL) By: [Nicolas Jesenberger](https://codepen.io/nicolasjesenberger) {% codepen https://codepen.io/nicolasjesenberger/pen/xxmbvxL %} ## 7. [Neon Toggle Switch](https://codepen.io/jkantner/pen/MWzqMrp) By: [Jon Kantner](https://codepen.io/jkantner) {% codepen https://codepen.io/jkantner/pen/MWzqMrp %} ## 8. [Night && Day Toggle](https://codepen.io/jh3y/pen/LYgjpYZ) By: [Jhey](https://codepen.io/jh3y) {% codepen https://codepen.io/jh3y/pen/LYgjpYZ %} ## 9. [Light/Dark Toggle](https://codepen.io/jkantner/pen/eYygqJm) By: [Jon Kantner](https://codepen.io/jkantner) {% codepen https://codepen.io/jkantner/pen/eYygqJm %} ## 10. [Day and Night Toggle](https://codepen.io/TurkAysenur/pen/bGawdKv) By: [Aysenur Turk](https://codepen.io/TurkAysenur) {% codepen https://codepen.io/TurkAysenur/pen/bGawdKv %} ## 11. [City Life Toggle](https://codepen.io/josetxu/pen/poKbEjG) By: [Josetxu](https://codepen.io/josetxu) {% codepen https://codepen.io/josetxu/pen/poKbEjG %} ## 12. [Sci-Fi Door Lock Toggle](https://codepen.io/chrisgannon/pen/bLeMEB) By: [Chris Gannon](https://codepen.io/chrisgannon) {% codepen https://codepen.io/chrisgannon/pen/bLeMEB %} <hr> Writing has always been my passion and it gives me pleasure to help and inspire people. If you have any questions, feel free to reach out! Make sure to receive the best resources, tools, productivity tips, and career growth tips I discover by subscribing to [my newsletter](https://madzadev.substack.com/)! Also, connect with me on [Twitter](https://twitter.com/madzadev), [LinkedIn](https://www.linkedin.com/in/madzadev/), and [GitHub](https://github.com/madzadev)!
madza
1,879,326
Frosty Delight with Banana Ice Frozen Fruit Monster E-Liquid 100ml
****Introduction: Prepare your taste buds for an exhilarating journey into the world of frozen...
0
2024-06-06T14:20:55
https://dev.to/fruitmonster/frosty-delight-with-banana-ice-frozen-fruit-monster-e-liquid-100ml-38o3
banana, ice, frozen, fruit
****Introduction: **** Prepare your taste buds for an exhilarating journey into the world of frozen delights with Banana Ice Frozen Fruit Monster E-Liquid 100ml. In this blog post, we'll uncover the frosty sensation and delightful flavors offered by this refreshing vape juice. Get ready to indulge in a frosty delight like never before. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/kx359qjgnjs9rhbyoqjk.jpg) **Discovering Banana Ice Frozen Fruit Monster: ** Banana Ice Frozen Fruit Monster isn't your ordinary vape juice – it's a tantalizing blend of sweet banana flavor infused with a refreshing icy twist. With each puff, you'll experience the perfect balance of fruity sweetness and coolness, creating a sensation that is both invigorating and satisfying. ****A Refreshing Escape: **** Escape the heat and refresh your senses with Banana Ice Frozen Fruit Monster E-Liquid 100ml. With its generous 100ml capacity, you can enjoy extended vaping sessions without the need for frequent refills, allowing you to immerse yourself fully in the frosty delight. Whether you're lounging at home or on the go, this vape juice is the perfect companion for any occasion. ****Experience the Icy Freshness: **** One of the standout features of Banana Ice Frozen Fruit Monster is its icy freshness. The chilling sensation of menthol combined with the sweetness of ripe bananas creates a flavor profile that is truly unique and exhilarating. With each inhale, you'll be greeted by a burst of coolness that instantly refreshes your palate, followed by the smooth and creamy notes of ripe bananas, leaving you craving for more. **Conclusion: Embrace the Frosty Delight: ** In conclusion, Banana Ice Frozen Fruit Monster E-Liquid 100ml is a must-try for any vaper seeking a refreshing and satisfying vaping experience. With its frosty delight and delightful flavors, it's sure to become a staple in your vape collection. So why wait? Dive into the frosty sensation today and discover the irresistible allure of Banana Ice Frozen Fruit Monster. [https://fruitmonsterofficial.com/product/banana-ice-frozen-fruit-monster-e-liquid-100ml/ ]
fruitmonster
1,879,324
HackerRank SQL Preparation: Japanese Cities' Attributes(MySQL)
Problem Statement: Query all attributes of every Japanese city in the CITY table. The COUNTRYCODE for...
0
2024-06-06T14:18:07
https://dev.to/christianpaez/hackerrank-sql-preparation-japanese-cities-attributesmysql-12e9
sql, writeups, hackerrank, mysql
**Problem Statement:** Query all attributes of every Japanese city in the **CITY** table. The `COUNTRYCODE` for Japan is `JPN`. **Link:** [HackerRank - Japanese Cities Attributes](https://www.hackerrank.com/challenges/japanese-cities-attributes/problem) **Solution:** ```sql SELECT * FROM CITY WHERE COUNTRYCODE = 'JPN'; ``` **Explanation:** - `SELECT *`: The asterisk (*) is a wildcard character in SQL that means "all columns." This part of the query specifies that you want to retrieve all columns from the table. - `FROM CITY`: Indicates that you are selecting data from the **CITY** table. - `WHERE COUNTRYCODE = 'JPN'`: This condition filters the rows to include only the cities where the `COUNTRYCODE` is 'JPN' (Japan). This query will return all the columns for every row in the **CITY** table where the `COUNTRYCODE` is 'JPN'. It's useful when you need to retrieve all details about every city in Japan. By running this query, you can see the complete dataset of Japanese cities stored in the **CITY** table, including information such as city names, populations, districts, and other relevant attributes.
christianpaez
1,879,323
Existing methods to query blockchain data and their trade-offs
Blockchain technology has transformed the data storage landscape by offering decentralized...
0
2024-06-06T14:18:00
https://docs.envio.dev/blog/methods-to-query-blockchain-data-and-their-trade-offs
Blockchain technology has transformed the data storage landscape by offering decentralized transparency and immutability. This innovative technology has sparked the creation of countless blockchain projects, each aiming to develop something unique with groundbreaking innovation. Developers building blockchain-powered applications often encounter challenges related to the retrieval and reading of data stored on the blockchain, leaving data mostly under-utilized. The data retrieval process is inherently complex, computationally expensive, and hampers efficient querying, particularly in terms of speed, reliability, scalability, customizability, and for some protocols, multi-chain data aggregation. These difficulties pose significant obstacles for developers, diverting their attention towards infrastructure and maintenance tasks instead of focusing on the core objective of building brilliant dApps. Moreover, optimal performance and reliability are essential for providing users with a frictionless experience when interacting with their favourite dApp. Whether it's GameFi, where real-time game state updates are crucial as players submit their moves; NFTs, which require immediate drop status updates; DeFi, which demands real-time price and liquidity information; or Web3 Social, which strives to create a smooth user experience with instant updates, the need for efficient data querying directly impacts user satisfaction and overall UX. ## Existing methods to interpret blockchain data: The most common methods or services used to query data from the blockchain: * Hosting your own dedicated node (e.g. locally, co-location, or cloud service provider) * Using an RPC node provider (e.g. public or private) * Blockchain indexing solution providers (backend as a service) **<span style="text-decoration:underline;">Hosting your own dedicated node: </span>** Hosting a node yourself and then querying that node directly can be done by using an Ethereum client. An Ethereum client is the respective blockchain platform's “client” software on a machine, which will download, verify, and propagate new blocks across a blockchain network. It uses a JSON-RPC specification to provide a uniform set of methods for accessing blockchain data commonly known as an RPC node. Web3 developers have the choice of running an RPC node to read and write data on the blockchain. However, some developers may opt to manage their own nodes, allowing for personalized node configurations, increased security, and the implementation of system-level optimizations that are otherwise unattainable when relying on shared or dedicated nodes provided by an RPC service provider. **<span style="text-decoration:underline;">Trade-offs: </span>** There are three main trade-offs with running a node on your own compared to using an RPC node provider, including maintenance, time, and reliability costs. * Running your own full node requires dedicated hardware (e.g. RAM, storage, etc.) to download, validate, and store transaction information. Maintaining hardware to support changing levels of product usage is important to balance capacity and fault tolerance for your customers without overspending. * Running and maintaining your own blockchain nodes can involve lots of technical issues, which can be challenging and time-consuming for blockchain application developers. For Web3 startups with limited funding and engineering time, dedicating a non-trivial amount of engineering resources to managing their own infrastructure comes at the cost of not focusing on building out the core functionality of their product. * The maintenance costs of running a node will be highly dependent on whether you use a cloud service provider like AWS, run your own bare-metal server, engineering time, and the amount of hardware and bandwidth resources you need for your specific application. **“In today's fast-paced Web3 environment, time is of the essence to stand out in a crowded space. With an endless stream of innovative products being released daily, reducing time-to-market is critical to success.”** _- [Sven](https://x.com/svenmuller95), BD at Envio._ Unreliable nodes not only take time away from blockchain developers that could be building the core functionality of their product, but it directly impacts the end-user experience. When nodes are down, users cannot use your product and will experience friction, which has potential downstream implications such as user trust and retention, where users churn to alternative products. **<span style="text-decoration:underline;">Using an RPC node provider:</span>** RPC node providers handle all IT infrastructure setup, management, and maintenance of hosting a node and expose an endpoint for developers to make requests for blockchain data. By choosing a node provider, all node setup and maintenance responsibilities are relieved from the developer. Node providers are available for most leading blockchains such as Ethereum and Solana and also Layer-2 scaling solutions like Polygon, Avalanche, and Arbitrum. Node RPC endpoints are classified into two primary offerings: Public and Private endpoints. * Public RPC endpoints are shared, rate-limited APIs available for anybody to send and receive data from the blockchain (e.g., make a transaction). * Private RPC endpoints are dedicated APIs that operate in isolation, in order to service the demand needs of a high-throughput application and provide a more consistent performance. Private RPC endpoints often maintain explicit service-level agreements (SLAs), guaranteeing both performance and availability. **<span style="text-decoration:underline;">Trade-offs: </span>** Public endpoints are free and ready to use at any time, and are often rate-limited, making them unsuitable for supporting production-grade applications. Further, public RPC endpoints have limited customer support, lack active developer infrastructure, and do not scale to the demands of running dApps. Private RPC endpoints predominantly focus only on solving two of the said challenges for blockchain developers to query data efficiently and effectively from the blockchain: ❌ Speed ✅ Reliability ✅ Scalability ❌ Customisability ❌ Aggregation (e.g. multi-chain app, full tx history) However, even the challenges RPC node providers aim to solve are a good debate about whether they are using the best tech and most efficient methods to solve these user problems. RPC nodes are typically base-level tech and form one of the simplest building blocks of blockchain technology. For one, RPC nodes are request-heavy, which results in a lot of back-and-forth communication of the network and more logic built into your dApp. e.g if a user has one hundred tokens, the user may need to make one hundred requests to get the balance of every token. Moreover, you have to keep in mind that checking a balance is a base-level task. Imagine the number of requests you would require to do more advanced queries and computations. Applications built around RPC nodes are “heavy” and also difficult to maintain. Another major limitation here is the inability to filter and aggregate data, and as mentioned above, RPC nodes are only the first step in making an expansive and functional application work as it should. Public nodes are commonly not connected to long-term transaction history storage, so you will also have to find workarounds to get a full transaction history **<span style="text-decoration:underline;">Blockchain indexing solution providers:</span>** Most blockchain-powered applications are making use of some kind of indexing solution, whether it’s in-house developed, are using a third-party blockchain indexing solution. In practice, a blockchain developer should never speak with an RPC node directly unless absolutely necessary. For instance, when you need to deploy a smart contract, you have to communicate directly with the RPC node. However, for most of the Web3 development process (especially to fetch data from the blockchain), this is not necessary when using blockchain indexing solutions. Imagine your backend is also pre-built, RPC requests are optimized to your specific requirements (e.g. real-time web3 events, NFT events, etc.), and you’ve got a tool to present information within your application in just a few commands. This is where another form of querying and storing blockchain data is emerging: Blockchain data indexing solutions. A blockchain indexer is a hosted backend that indexes and organizes blockchain data, and typically makes this data readily available for your application in an instant query-able API, such as GraphQL. Blockchain indexing solutions abstract away a lot of the complexity away from the developer by prioritizing the developer experience and offering full-stack Web3 SDKs with all the materials and tools required to help developers focus on building brilliant dApps. It is important to note, that some blockchain indexers also allow developers to aggregate event data from multiple data sources, into a unified database, which eradicates the need to deploy and maintain multiple API instances for each blockchain for their multi-chain dApp. **<span style="text-decoration:underline;">Trade-offs:</span>** * Customizability: Some solutions only offer pre-built APIs to “plug-and-play”. These often follow a pre-configured API standard according to the underlying smart contract or use case. Examples include but are not limited to an NFT API, Token API, Balance API, etc. Other solutions are indexing frameworks, that offer more customisability for application-specific needs, such as novel applications or protocols creating innovative solutions that require custom event handling. * Centralization: This may be a consideration point for some protocols looking to decentralize more than their underlying smart contracts. The business model for decentralized indexing solutions varies compared to centralized indexing providers. Decentralized indexers require you to participate in the network in exchange for token rewards. The token in most cases is the work utility token that coordinates data providers and consumers and incentivizes protocol participants to organize data effectively. Centralized indexers usually follow a pay-per-use or subscription model, and the centralization risk is mitigated due to the use of compliant cloud providers with best-in-class redundancy and no single points of failure. In conclusion, effectively and efficiently querying blockchain data is crucial for developers and companies operating in the Web3 space. While hosting your own dedicated node provides customization and control, it comes with maintenance, time, and reliability costs that can distract from building core functionality. Using RPC node providers alleviates some of these challenges, but they have limitations in terms of speed, reliability, scalability, customizability, and data aggregation. A new paradigm is emerging with blockchain indexing solution providers, which offer full-stack Web3 SDKs and abstract the complexity of backend development. These solutions prioritize developer experience, performance, and customizability, allowing for the creation of innovative applications in a shorter period of time. However, it's important to consider the trade-offs, such as potential centralization risks. Overall, leveraging blockchain indexing solutions can greatly improve the efficiency and effectiveness of querying blockchain data, enabling developers to focus on building user-friendly and impactful applications in the fast-paced Web3 environment. ## About Envio [Envio](https://envio.dev/) is a modern, dev-friendly, speed-optimized blockchain indexing solution that addresses the limitations of traditional blockchain indexing approaches and gives developers peace of mind. Blockchain developers and data analysts can harness the power of Envio to overcome the challenges posed by latency, reliability, infrastructure management, and costs across various sources. If you're a blockchain developer looking to enhance your development process and unlock the true potential of Web3 infrastructure, look no further. Join our growing community of Web3 developers, check out our docs, and let's work together to revolutionize the blockchain world and propel your project to the next level. [Website](https://envio.dev/) | [X](https://twitter.com/envio_indexer) | [Discord](https://discord.com/invite/gt7yEUZKeB) | [Hey](https://hey.xyz/u/envio) | [Medium](https://medium.com/@Envio_Indexer) | [YouTube](https://www.youtube.com/channel/UCR7nZ2yzEtc5SZNM0dhrkhA) | [Reddit](https://www.reddit.com/user/Envio_indexer)
envio
1,879,322
How to Deploy a Next JS App on IPFS (InterPlanetary File System) and automate using Fleek
In todays’ AI era, where running a model for inference on GPU is a costly affair, it becomes...
0
2024-06-06T14:15:18
https://dev.to/amlana24/how-to-deploy-a-next-js-app-on-ipfs-interplanetary-file-system-and-automate-using-fleek-lf8
fleek, nextjs, ipfs, devops
In todays’ AI era, where running a model for inference on GPU is a costly affair, it becomes important to find cost effective alternatives to at least deploy the app frontends. One such alternative I came across is IPFS. It provides you the decentralized storage flavor to your application at a fraction of cost. And when it comes to deploying web applications, its always better if we can automate the process. In this post I will walkthrough the process of automating the deployment of a NextJS frontend to IPFS using Fleek. More details: https://medium.com/@amlana21/how-to-deploy-a-next-js-app-on-ipfs-interplanetary-file-system-and-automate-using-fleek-5637c792b7a3
amlana24
1,879,321
Tweens in Flutter News 2024 #22 ʚїɞ
Hey Flutter enthusiasts! Ever worry about missing key Flutter updates? Well, worry no...
26,008
2024-06-06T14:12:06
https://dev.to/lucianojung/langchaingigachat-in-flutter-news-2024-22-eyie-4dbd
flutter, news, dart, discuss
## Hey Flutter enthusiasts! Ever worry about missing key Flutter updates? Well, worry no more! Starting 2024, I'm here to keep you informed with a weekly Monday report. Let's stay ahead in the world of Flutter! ## Table of Contents 1. {% cta #mayor-flutter-updates %} Mayor Flutter updates {% endcta %} 2. {% cta #new-flutter-videos %} New Flutter Videos {% endcta %} 3. [New Flutter Packages](#new-flutterpackages) 4. [New Dev Posts](#new-devposts) 5. [New Medium Posts](#new-mediumposts) --- ## Mayor Flutter updates: > There are no mayor flutter updates this week! -> Currently [Flutter Version Google I/O 3.22](https://docs.flutter.dev/release/whats-new) --- ## New Flutter Videos: > The [Flutter YouTube Channel](https://youtube.com/@flutterdev?si=RZyl1nLVnSt373Vu) did post new Videos: {% embed https://www.youtube.com/watch?v=fatb7Clc0MM %} \#Flutter, #TechniqueOfTheWeek --- ## New Flutter-Packages {% details [langchain_gigachat](https://pub.dev/packages/langchain_gigachat) (Version 0.1.2) %} LangChain.dart unofficial integration module for SBER AI (GigaChat, GigaChat Pro) \#MIT (LICENSE) {% enddetails %} {% details [dartutilities](https://pub.dev/packages/dartutilities) (Version 1.0.3) %} A simple library that contains all utilities that you want \#Packages that depend on dartutilities {% enddetails %} {% details [device_preview_plus](https://pub.dev/packages/device_preview_plus) (Version 2.0.0) %} Approximate how your Flutter app looks and performs on another device \#collection, #device_frame, #flutter, #flutter_localizations, #freezed_annotation, #json_annotation, #provider, #shared_preferences {% enddetails %} {% details [credit_card_flag_detector](https://pub.dev/packages/credit_card_flag_detector) (Version 1.0.0+6) %} A package that detects credit card types based on the current credit card number patterns \#flutter {% enddetails %} {% details [i_toast](https://pub.dev/packages/i_toast) (Version 0.0.5) %} Provides easy-to-use and non-intrusive toast messages with options for customization including duration, position, and appearance. \#MIT (LICENSE) {% enddetails %} --- ### New Dev-Posts {% embed https://dev.to/redrodrigoc/server-driven-ui-no-flutter-367d %} {% embed https://dev.to/lyzab/im-new-to-flutter-3j7g %} {% embed https://dev.to/logto/custom-flutterflow-authentication-using-logto-nl0 %} {% embed https://dev.to/suamirochadev/web-ou-app-qual-o-melhor-para-criar-em-flutter-4oio %} {% embed https://dev.to/media-web-services/creation-dapplication-android-et-ios-avec-flutter-5568 %} --- ### New Medium-Posts {% details [Implementing Lazy Loading in Flutter The Ultimate Performance Hack](https://medium.com/@SabinPoudel6969/implementing-lazy-loading-in-flutter-the-ultimate-performance-hack-64e43bca3eb1) by Sabin Poudel %} Lazy loading in software development refers to the process of deferring the initialization of an object until it is needed. The condition scrollController.position.maxScrollExtent ==… \Lazy Loading, Flutter, Android App Development {% enddetails %} {% details [Flutter Dosya Konumu Hatası](https://medium.com/@dilanilgn3/flutter-dosya-konumu-hatas%C4%B1-0ff94a168ad8) by Dilan Ilgın Atılgan %} \Flutter {% enddetails %} {% details [Flutter Align Widget](https://medium.com/@jaimetellezb/flutter-align-widget-d6588f376a49) by Jaime Alberto Téllez Bohórquez %} En esta ocasión veremos un widget que nos permite como su nombre lo indica alinear un widget hijo dentro de un widget padre. Este widget permite poder ubicar el widget hijo en la posición que se… \Flutter, Learning, Code, Technology {% enddetails %} {% details [Flutter considerations for writing an App from the scratch](https://medium.com/stackademic/flutter-considerations-for-writing-an-app-from-the-scratch-1be5aec4dd76) by Bernardo Iribarne %} After years writing apps, I’ve been building different app templates, I’ve been using different packages, there have been many changes but the considerations haven’t changed in the same scala and… \Flutter App Development, Flutter, Flutter Widget, Flutter Ui {% enddetails %} {% details [Streamline Flutter Development with Clean Architecture](https://medium.com/simform-engineering/streamline-flutter-development-with-clean-architecture-a850b182cfb9) by Dhaval Kansara %} Learn how Clean Architecture can streamline Flutter development for modular maintainable and testable apps with a practical example of a counter app. \Flutter, Clean Architecture, Architecture, Clean Code, Dart {% enddetails %} --- Last Flutter News: [Flutter News 2024 #21 ʚїɞ](https://dev.to/lucianojung/series/26008) _Did I miss any recent updates? Feel free to share any important news I might have overlooked!_
lucianojung
1,879,426
Imersão Em Design Gratuita Com Certificado Da PM3
Conheça o Design com a Imersão em Design da PM3, um curso gratuito e online que abre as portas para...
0
2024-06-23T13:51:08
https://guiadeti.com.br/imersao-design-gratuita-certificado-pm3/
cursogratuito, cursosgratuitos, design, tecnologia
--- title: Imersão Em Design Gratuita Com Certificado Da PM3 published: true date: 2024-06-06 14:11:14 UTC tags: CursoGratuito,cursosgratuitos,design,tecnologia canonical_url: https://guiadeti.com.br/imersao-design-gratuita-certificado-pm3/ --- Conheça o Design com a Imersão em Design da PM3, um curso gratuito e online que abre as portas para as carreiras de Product Design, UX e UI. A imersão oferece uma visão das possibilidades nessa área, desde a experiência do usuário até o design estratégico. Acontecendo por meio de aulas ao vivo e conteúdos complementares, os participantes terão a oportunidade de dominar as principais ferramentas da área e aplicar o que aprenderam em atividades práticas. O curso é ideal para quem está iniciando na área, buscando uma transição de carreira, ou deseja aprofundar seus conhecimentos para se tornar um designer mais estratégico. Ao se inscrever, você receberá um link de indicação pessoal para compartilhar o curso e acumular pontos, com a chance de ganhar prêmios exclusivos. ## Imersão Em Design A PM3 oferta o curso de Imersão em Design, destinado a indivíduos interessados em explorar e aprimorar suas habilidades em várias áreas como Product Design, UX e UI. ![](https://guiadeti.com.br/wp-content/uploads/2024/06/image-16.png) _Imagem da página do curso_ Este curso gratuito e completamente online está estruturado para fornecer uma compreensão profunda, desde a experiência do usuário até o design estratégico, por meio de aulas ao vivo e materiais complementares. ### Detalhes do Curso e Cronograma A imersão ocorrerá de 11 a 17 de junho, com inscrições abertas até o dia 10 de junho. Os participantes terão acesso a conteúdos exclusivos antes do início oficial para maximizar sua preparação. As sessões ao vivo, conduzidas no canal do YouTube da PM3, estão agendadas para os dias 11, 14 e 17 de junho, às 19h, cada uma com duração aproximada de uma hora e meia. Esses encontros incluirão discussões aprofundadas com convidados especialistas em diversos tópicos de design. ### Conteúdo Trabalhado - Dia 1 – 11/06 Possibilidades de carreira: Saiba qual o papel de um Designer no dia a dia da empresa e como se tornar indispensável para o crescimento do negócio. - Dia 2 – 12/06 Cultura de Design: Aprenda mais sobre o que é e como estabelecer uma cultura de Design, além de aprofundar em tipos de pesquisa com usuários. - Dia 3 – 13/06 Construção de experiências: Aprofunde no processo de construção da experiência do usuário, problem framing e alinhamento estratégico de design. - Dia 4 – 14/06 Ideação e Prototipação: Entenda a importância de dois tópicos fundamentais em Design, além de receber dicas básicas de Figma. - Dia 5 e 6 – 15 e 16/06 Design inclusivo e Heurística: Aprenda táticas para desenvolver um design com inclusão, além de saber como utilizar de gatilhos mentais para criar telas. - Dia 7 – 17/06 Design estratégico: Entenda como impactar todo o planejamento estratégico da sua empresa, além de dicas para alavancar a sua carreira em design. ### Comunicação e Engajamento Para garantir uma experiência de aprendizado integrada e contínua, a PM3 utilizará um grupo de WhatsApp e email para enviar avisos importantes. Uma área logada exclusiva será disponibilizada para acesso a todos os conteúdos e aulas. A imersão também promove um componente interativo significativo, onde os participantes podem ganhar prêmios através de um sistema de indicação. Ao se inscrever, cada participante recebe um link de indicação pessoal para compartilhar, incentivando a participação e o engajamento dentro da comunidade. <aside> <div>Você pode gostar</div> <div> <div> <div> <div> <span><img decoding="async" width="280" height="210" src="https://guiadeti.com.br/wp-content/uploads/2024/06/Imersao-Em-Design-280x210.png" alt="Imersão Em Design" title="Imersão Em Design"></span> </div> <span>Imersão Em Design Gratuita Com Certificado Da PM3</span> <a href="https://guiadeti.com.br/imersao-design-gratuita-certificado-pm3/" title="Imersão Em Design Gratuita Com Certificado Da PM3"></a> </div> </div> <div> <div> <div> <span><img decoding="async" width="280" height="210" src="https://guiadeti.com.br/wp-content/uploads/2023/06/Curso-de-Excel-Simplifica-280x210.png" alt="Curso de Excel Simplifica Treinamentos" title="Curso de Excel Simplifica Treinamentos"></span> </div> <span>Curso de Excel Online e 100% Gratuito da Simplifica Treinamentos</span> <a href="https://guiadeti.com.br/curso-de-excel-gratuito-simplifica-treinamentos/" title="Curso de Excel Online e 100% Gratuito da Simplifica Treinamentos"></a> </div> </div> <div> <div> <div> <span><img decoding="async" width="280" height="210" src="https://guiadeti.com.br/wp-content/uploads/2024/06/Desenvolvimento-Web-2-280x210.png" alt="Desenvolvimento Web JA Brasil" title="Desenvolvimento Web JA Brasil"></span> </div> <span>Curso De Desenvolvimento Web Online E Gratuito Da JA Brasil</span> <a href="https://guiadeti.com.br/curso-desenvolvimento-web-gratuito-ja-brasil/" title="Curso De Desenvolvimento Web Online E Gratuito Da JA Brasil"></a> </div> </div> <div> <div> <div> <span><img decoding="async" width="280" height="210" src="https://guiadeti.com.br/wp-content/uploads/2024/06/Formacao-Analista-De-TI-280x210.png" alt="Formação Analista De TI" title="Formação Analista De TI"></span> </div> <span>Formação De Analista De TI Gratuita Para PCD: Chance De Contratação</span> <a href="https://guiadeti.com.br/formacao-analista-de-ti-gratuita-pcd-contratacao/" title="Formação De Analista De TI Gratuita Para PCD: Chance De Contratação"></a> </div> </div> </div> </aside> ## Product Design Product Design, ou design de produtos, é uma disciplina focada na criação e desenvolvimento de produtos que oferecem soluções inovadoras e funcionais para necessidades do consumidor. Essa área combina elementos de design, engenharia e pesquisa de mercado para garantir que os produtos não apenas atendam às expectativas dos usuários, mas também proporcionem uma experiência agradável e eficaz. O objetivo é criar produtos que sejam ao mesmo tempo úteis, usáveis, desejáveis e acessíveis. ### Processo de Desenvolvimento no Product Design O processo começa com uma pesquisa aprofundada. Os designers de produto exploram as necessidades e desejos dos usuários, estudam o mercado e a concorrência, e identificam oportunidades de inovação. A fase de ideação segue a pesquisa, onde são geradas múltiplas ideias através de brainstormings e outras técnicas de criatividade. Esta etapa é crucial para definir a direção e o conceito do produto. Ao integrar práticas eficazes de Product Design, as empresas podem assegurar que seus produtos não apenas atendam, mas excedam as expectativas dos usuários, garantindo sucesso no lançamento e sustentabilidade no mercado. ### Prototipagem e Testes Depois de definir uma direção clara, o próximo passo é a prototipagem. Modelos iniciais, muitas vezes criados usando materiais simples ou através de simulações digitais, são desenvolvidos para testar conceitos. Esses protótipos são essenciais para visualizar o produto final e realizar ajustes necessários antes da produção em massa. Testes de usabilidade são realizados com usuários reais para coletar feedback e garantir que o produto final seja intuitivo e eficaz. ### Lançamento e Iteração Uma vez que o produto é finalizado e passa por todos os testes necessários, ele segue para a produção e lançamento. No entanto, o trabalho do designer de produto não termina com o lançamento. Tendo base no feedback contínuo dos usuários e nas mudanças nas condições de mercado, o produto pode passar por várias iterações. Essa fase de ajuste contínuo é fundamental para manter a relevância e a eficácia do produto no mercado. ### Importância Estratégica O design de produtos é uma função estratégica que pode definir o sucesso de uma empresa. Produtos bem projetados diferenciam uma marca da concorrência, criam valor significativo para o usuário e podem transformar completamente a percepção do mercado sobre uma empresa. Em um mercado cada vez mais saturado, ter conhcimentos nessa área é uma vantagem competitiva que pode levar a melhores resultados de negócios e maior satisfação do cliente. ## PM3 PM3 é uma referência em gestão e estratégias de produtos no mercado, oferecendo uma variada lista de cursos, workshops e consultorias destinados a profissionais que desejam aprimorar suas habilidades em gerenciamento de produtos. Tendo uma forte ênfase na prática e na aplicação de conhecimentos teóricos em cenários reais, a PM3 se destaca por sua abordagem focada em resultados tangíveis e melhorias contínuas nas práticas de desenvolvimento de produtos. ### Cursos e Certificações Oferecidos pela PM3 A PM3 oferece cursos que cobrem todos os aspectos do ciclo de vida de gerenciamento de produtos, desde a concepção e desenvolvimento até o lançamento e avaliação de mercado. Os cursos são projetados para equipar os profissionais com as competências necessárias para liderar projetos de produtos de sucesso. As certificações da PM3 são reconhecidas no mercado e servem como um distintivo de competência e profissionalismo na indústria de gerenciamento de produtos. ### Workshops e Treinamentos Personalizados A PM3 também organiza workshops que abordam temas específicos dentro do espectro de gerenciamento de produtos. Esses workshops são frequentemente personalizados para atender às necessidades específicas de uma equipe ou empresa, proporcionando uma experiência de aprendizado direcionada que foca em resolver desafios reais enfrentados pelos profissionais da área. ### Impacto no Desenvolvimento Profissional e Organizacional Os programas da PM3 são altamente valorizados por profissionais que buscam avançar em suas carreiras. A rede de ex-alunos da PM3 oferece uma excelente plataforma para networking, compartilhamento de conhecimentos e colaboração entre pares. ## Inscreva-se agora no curso da PM3 e transforme sua carreira com habilidades de ponta! As [inscrições para a Imersão Em Design](https://materiais.cursospm3.com.br/imersao-em-design) devem ser realizadas no site da PM3. ## Compartilhe este curso– Elevando carreiras a novos patamares! Gostou do curso gratuito de Design? Então compartilhe com a galera! O post [Imersão Em Design Gratuita Com Certificado Da PM3](https://guiadeti.com.br/imersao-design-gratuita-certificado-pm3/) apareceu primeiro em [Guia de TI](https://guiadeti.com.br).
guiadeti
1,879,320
Building and Deploying Your First Dockerized Application 🚀
Hey there! 🌟 If you’ve been hearing a lot about Docker and want to get your hands dirty, you’re in...
0
2024-06-06T14:09:57
https://dev.to/mohith/building-and-deploying-your-first-dockerized-application-3pd8
docker, developer
Hey there! 🌟 If you’ve been hearing a lot about Docker and want to get your hands dirty, you’re in the right place. Docker is an amazing tool for creating, deploying, and running applications inside containers. This guide will walk you through building and deploying your first Dockerized application. Let’s get started! 🏊‍♂️ **What is Docker? 🐳** Docker is an open-source platform that automates the deployment of applications inside lightweight, portable containers. Think of containers as little packages that hold everything your application needs to run, making sure it works smoothly anywhere, from your local machine to the cloud. 🌩️ **Setting Up Docker 🛠️** Before we begin, you’ll need to install Docker on your machine. Follow the official Docker installation guide for your operating system https://docs.docker.com/engine/install/. Don’t worry, it’s super straightforward! 👍 **Step 1: Create a Simple Web Application 🌐** Let’s start by creating a simple Node.js web application. **1. Initialize a new Node.js project:** `mkdir my-docker-app cd my-docker-app npm init -y` **2. Install Express.js:** `npm install express` **3. Create index.js with the following content:** ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/riuoghgh5uk1y90mhjeh.png) **4. Add a Docker file:** Create a file named Dockerfile in the root of your project directory with the following content: ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/s268h2raxbnk13hy6dwc.png) **Step 2: Build the Docker Image 🏗️** Now that we have our Dockerfile ready, we can build our Docker image. This is where the magic happens! ✨ `docker build -t my-docker-app .` **Step 3: Run the Docker Container 🏃‍♂️** Once the image is built, you can run it in a container. It’s showtime! 🎬 `docker run -p 3000:3000 my-docker-app` Open your browser and go to http://localhost:3000. You should see “Hello, Docker!” displayed. 🎉 **Step 4: Push to Docker Hub 🌍** To share your Docker image with others, you can push it to Docker Hub. First, log in to your Docker Hub account. `docker login` Then, tag and push your image: `docker tag my-docker-app your-dockerhub-username/my-docker-app docker push your-dockerhub-username/my-docker-app` Now, anyone can pull and run your Dockerized app. How cool is that? 😎 **Why is Docker Useful? 🤔** Docker isn't just a cool tool to play around with – it has some serious benefits that can make your life as a developer much easier: **Consistency:** Containers ensure that your application runs the same, regardless of where it is deployed. No more "it works on my machine" issues! 🛠️ **Isolation:** Each container runs in its own environment, which means you can run multiple containers on the same host without conflicts. Perfect for microservices architecture. 🧩 **Scalability:** Docker makes it easy to scale your applications up or down. Need more instances of a service? Just spin up more containers. 📈 **Portability:** Since containers package everything your application needs, you can run them anywhere – on your local machine, in the cloud, or even on a colleague's computer. 🌎 **Efficiency:** Containers are lightweight and use system resources more efficiently than traditional virtual machines. 💡 **How Companies Use Docker 🚀** Docker has become a staple in the tech industry, with companies using it to streamline their development and deployment processes. Here are a few ways companies leverage Docker: **Continuous Integration and Continuous Deployment (CI/CD):** Docker containers are used to create consistent build environments, making it easier to automate testing and deployment. **Microservices:** Companies break down their applications into smaller, manageable services, each running in its own container. This makes it easier to develop, deploy, and scale each service independently. **DevOps:** Docker bridges the gap between development and operations by providing a consistent environment across development, testing, and production. **Cloud Migration:** Docker containers make it easier to move applications to the cloud, as they package everything the application needs to run. **Rapid Prototyping:** Developers can quickly spin up new environments and test new features without worrying about dependencies or configuration issues. **Conclusion 🏁** And there you have it! You’ve just built, run, and deployed your first Dockerized application. Docker makes it incredibly easy to package your application and its dependencies, ensuring it runs consistently across different environments. Whether you're developing locally or deploying to the cloud, Docker is a powerful tool to have in your toolkit. 🧰 Happy coding, and welcome to the world of containers! 🥳
mohith
1,862,608
Spring Cloud: Refresh scope bean
Properties of microservice may be changed during execution. A mechanism is available for refresh in...
0
2024-06-06T14:09:34
https://dev.to/saladlam/spring-cloud-refresh-scope-bean-2149
spring, springcloud
Properties of microservice may be changed during execution. A mechanism is available for refresh in Spring Cloud. Following library is used - Java 17 - Spring Framework 6.1.6 - Spring Cloud Common 4.1.2 # About @RefreshScope annotation Following is the definition of *@RefreshScope*. ```java package org.springframework.cloud.context.config.annotation; // ... @Target({ ElementType.TYPE, ElementType.METHOD }) @Retention(RetentionPolicy.RUNTIME) @Scope("refresh") @Documented public @interface RefreshScope { // ... } ``` *@RefreshScope* (or *@Scope("refresh")*) is used for setting a bean with refresh scope. Following example is a component class annotated with *@RefreshScope*, for accessing URL of an API. ```java @Component @RefreshScope public class ConfigComponent { private String apiUrl; public String getApiUrl() { return apiUrl; } @Value("${api-url}") public void setApiUrl(String apiUrl) { this.apiUrl = apiUrl; } } ``` Two bean definitions are created. 1. name "configComponent", a singleton bean which is injected to other components. This is a proxy instance. 2. name "scopedTarget.configComponent", a refresh scope bean that is the actual instance. New instance is replaced when a refresh action is triggered. When getApiUrl() method of "configComponent" proxy instance is called, *org.springframework.aop.framework.CglibAopProxy.DynamicAdvisedInterceptor#intercept* will be called and to lookup "scopedTarget.configComponent" bean in BeanFactory. Then *org.springframework.beans.factory.support.AbstractBeanFactory#doGetBean* will be called. Bean "scopedTarget.configComponent" is a refresh scope, so the new instance is saved into cache in *org.springframework.cloud.context.scope.refresh.RefreshScope*. # Trigger beans refresh action A Spring Boot Actuator endpoint (/actuator/refresh) is available for trigger beans refresh action. For enables it, to add the following into configuration. ``` management.endpoints.web.exposure.include=refresh ``` The operation is defined in *org.springframework.cloud.context.refresh.ContextRefresher#refresh*. ```java public synchronized Set<String> refresh() { Set<String> keys = refreshEnvironment(); this.scope.refreshAll(); return keys; } ``` When it is triggered, first the configuration is reloaded from configuration sources provided by such as Spring Cloud Config, Spring Cloud Kubernetes. Then, existing refresh scope beans will be dereferenced and cannot be accessed furthermore. A new bean will be created at the point the bean method is called by using values of new configuration. # Reference 1. [https://docs.spring.io/spring-cloud-commons/reference/spring-cloud-commons/application-context-services.html#refresh-scope](https://docs.spring.io/spring-cloud-commons/reference/spring-cloud-commons/application-context-services.html#refresh-scope)
saladlam
1,879,319
Mistakes to Avoid While Going for Workday Integration Testing
1. Overlooking Data Mapping and Transformation Workday has emerged as a leading cloud-based solution...
0
2024-06-06T14:09:05
https://thesuperions.com/avoid-mistakes-in-workday-integration-testing/
wit, testing
**1. Overlooking Data Mapping and Transformation** Workday has emerged as a leading cloud-based solution for finance, planning and HR management in a field of enterprise software systems. Workday must be integrated with other technologies to guarantee efficient data flow and operational efficacy inside an organization’s IT ecosystem. However, there are some risks associated with the integration testing process that, if disregarded, can lead to costly delays and inefficiencies. You will look at five typical mirakes to steer clear of when doing [Workday integration testing](https://www.opkey.com/blog/addressing-workday-integration-challenges-with-test-automation) in this article. Transformation and mapping of data are essential parts of any integration process. Data inconsistencies, mistakes, and possible system failures may result from a failure to fully evaluate and take into consideration the differences in data formats, structures, and semantics between Workday and the connected systems. It is crucial to carefully map and convert data items in order to reduce this risk and guarantee that data integrity is maintained while information flows between systems. **2. Neglecting End-to-End Testing** End-to-end testing is frequently disregarded in favor of integration testing, which concentrates on specific interfaces or components. This narrow-minded approach may cause unanticipated problems in a complex workflow where several systems interact. To verify the integration process from data entry to output across all linked systems, thorough end-to-end testing is essential. Organizations can detect and resolve possible bottlenecks, performance problems, or integration gaps before they affect production settings by modeling real-world scenarios. **3. Inadequate Test Data Management** A crucial component of integration testing is efficient management of test data. There are a lot of hazards associated with using production data, including breaches of data privacy and inadvertent changes to operational systems. However, testing scenarios may become erroneous or incomplete if insufficient or contrived test data is used. Organizations should put strong test data management techniques into place to ensure that realistic, representative, and safe test data sets are available in order to strike a balance. This method protects sensitive data while simultaneously improving the effectiveness of testing. **4. Ignoring Non-Functional Requirements** Functional testing is crucial, but if non-functional needs are ignored, the integrated systems’ overall performance and quality may suffer. For a smooth user experience and to satisfy stakeholder expectations, non-functional factors including security, scalability, performance, and usability are essential. These non-functional needs should be covered by integration testing, which should include thorough load simulations, security audits, and stress tests for the integrated systems. **5. Lack of Collaboration and Communication** Cross-functional teams, comprising IT specialists, outside vendors, and business stakeholders are frequently involved in Workday integration initiatives. Ineffective avenues for cooperation and communication can cause delays, misplaced expectations, and even integration failures. Facilitating transparent communication, precisely delineating roles and responsibilities, and instituting frequent project status reports are vital for guaranteeing faultless coordination and prompt resolution of issues **Conclusion** Organizations can greatly increase the success percentage of their Workday integration testing initiatives by addressing these five typical errors. They can use the all-inclusive automation solution from [Opkey](https://www.opkey.com/) to expedite their Workday testing. Business users may quickly automate functional, user acceptance, security, regression, and integration testing without the need for coding. They can reduce the time required to design test scripts by 70% by utilizing pre-built accelerators. Furthermore, using an analysis of the Workday environment, Opkey’s intelligent test discovery finds gaps and maximizes coverage. Integrating Workday with additional applications and DevOps tools can achieve complete end-to-end automation. With Opkey’s unified, no-code automation, teams can get rid of isolated testing platforms. They can quicken testing cycles, expand risk coverage, and guarantee a faultless Workday experience.
rohitbhandari102
1,879,318
HackerRank SQL Preparation: Select by ID(MySQL)
Problem Statement: Query all columns for a city in the CITY table with the ID 1661. Link:...
0
2024-06-06T14:07:20
https://dev.to/christianpaez/hackerrank-sql-preparation-select-by-idmysql-267j
sql, writeups, hackerrank, mysql
**Problem Statement:** Query all columns for a city in the **CITY** table with the ID 1661. --- **Link:** [HackerRank - Select by ID](https://www.hackerrank.com/challenges/select-by-id/problem) **Solution:** ```sql SELECT * FROM CITY WHERE ID = 1661; ``` **Explanation:** - `SELECT *`: The asterisk (*) is a wildcard character in SQL that means "all columns." This part of the query specifies that you want to retrieve all columns from the table. - `FROM CITY`: Indicates that you are selecting data from the **CITY** table. - `WHERE ID = 1661`: This condition filters the rows to include only the city with the specific `ID` of 1661. This query will return all the columns for the row in the **CITY** table where the `ID` is 1661. It's useful when you need to retrieve all details about a specific city identified by its unique ID. By running this query, you can see all the attributes (such as city name, country code, population, etc.) for the city that has the ID of 1661.
christianpaez
1,879,317
Eat Chia Seeds to Perform Well in Coding
In the fast-paced world of coding, maintaining peak mental performance and overall well-being is...
0
2024-06-06T14:03:56
https://dev.to/rizwan_hafeez_570851f72b3/eat-chia-seeds-to-perform-well-in-coding-457p
In the fast-paced world of coding, maintaining peak mental performance and overall well-being is crucial. Chia seeds, a tiny yet powerful superfood, can be a game-changer for programmers looking to enhance their cognitive abilities and sustain long hours of concentration. This article explores the benefits of chia seeds for coders and provides insights on how to incorporate them into your diet, along with information on where to buy high-quality chia seeds in Pakistan from [Just Organics](https://justorganics.pk/collections/chia-seeds).
rizwan_hafeez_570851f72b3
1,879,316
PAP – Peroxide-Free Teeth Whitening: Is It the Safest Way to Go?
Explore the safety of PAP - Peroxide-Free Teeth Whitening. Learn about its effectiveness and risks...
0
2024-06-06T14:03:15
https://dev.to/charles_darwin_eaced6323f/pap-peroxide-free-teeth-whitening-is-it-the-safest-way-to-go-1b5l
Explore the safety of PAP - Peroxide-Free Teeth Whitening. Learn about its effectiveness and risks for a brighter, healthier smile. Most people don’t feel confident about their smiles because of discolored teeth. Tight-lipped smiles are the order of the day. This is why teeth whitening near you is the most prevalent cosmetic dental treatment. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/qrg6hpec9zh9f6nhme9e.jpg) Since the demand for [teeth whitening in Morristown, NJ](https://www.dentalcareofmorristown.com/pap-peroxide-free-teeth-whitening-is-it-the-safest-way-to-go/), is high, countless products in the market are trying to meet the demand. Therefore, don’t be shocked to see different products, some good, some excellent, while others you may not be sure where to classify them! In the same breath, there is a new product known as PAP, which is a peroxide-free teeth whitening treatment. However, there are still some questions that are surrounding this treatment. So, read along to get to dive into what PAP is all about.
charles_darwin_eaced6323f
1,875,631
React Native layout management with Yoga 3.0
Written by Andrew Baisden✏️ React Native is an open source JavaScript framework used to build mobile...
0
2024-06-06T14:01:00
https://blog.logrocket.com/react-native-layout-management-yoga-3
reactnative, mobile
**Written by [Andrew Baisden](https://blog.logrocket.com/author/andrewbaisden/)✏️** React Native is an open source JavaScript framework used to build mobile applications. One of the biggest advantages that React Native has when compared to other languages and frameworks is its ability to build cross-platform applications, which use one codebase and run on both iOS and Android. This is an important aspect because it allows for much faster app development; you don’t have to build the same app twice and separate your teams for each platform. Mobile apps continue to grow in popularity so having an effective mobile app development workflow is an essential part of any digital business. Having good layout management is also extremely important when developing a responsive mobile design that is visually appealing to users. React Native supports the web layout box model Flexbox, which makes it easy for any web developer to learn because you are essentially writing the same CSS styles. This implementation is handled by the Yoga layout engine, which was developed for React Native applications. In this article, we will explore the latest release of React Native v0.74, featuring the release of the Yoga 3.0 layout engine, which brings with it some new functionalities and bug fixes. ## Yoga 3.0 updates Yoga 3.0 is a layout system that can be implemented into different frameworks, including React Native. Its main purpose is to calculate the position and sizes of various boxes on a screen. This is the core principle used for putting together a user interface. The layout system is designed to use the popular [CSS flexbox](https://blog.logrocket.com/css-flexbox-vs-css-grid/) model, which makes it easy to share code between web and mobile applications. With the latest release of Yoga 3.0, there have been some improvements to layout performance, especially with improving predictability and consistency in web interactions. Although there may be some intentional layout quirks, those are preserved for backwards compatibility. Overall, the latest version of React Native more closely follows the web standards set out in the Yoga 3.0 API. One of the most important additions in Yoga 3.0 is its complete support for CSS's `static` position. This is essential when developing online applications and web pages. The `static` position guarantees that items stay in their original spot and do not move around. Elements with a `static` position cannot be offset, which means they will not move from their default position. Additionally, they are ignored when defining the containing block for absolutely positioned items. This allows you to place an element relative to an ancestor other than its immediate parent, giving you more layout options. Overall there have been quite a few improvements to this latest version, including: * Making the layout more accurate and in line with the CSS flexbox model * Supporting the CSS flexbox properties `position: static` and `align-content: space-evenly` * Removing and depreciating older Yoga APIs * Fixing crashes that can occur in Java bindings * The JavaScript bindings for Yoga are now available as an ES Module * Breaking changes to older codebases caused by some of the changes and improvements Now let's take a look at some of the updates that have been made in React Native v0.74. ## React Native v0.74 updates The first new update to mention are layout inversions. The behavior of margin, padding, and border properties on `row-reverse` containers has changed; it is now the same as the web so there are no more discrepancies. For example, the `flex-direction` property in Yoga 3.0 now works the same way as it does in CSS when using flexbox on the web. Another new addition is the CSS property `alignContent: space-evenly`, which evenly distributes the lines inside of multi-line flex containers. These updates are likely to require old codebases to be updated. However, in the long run, the outcome is much more positive and you can expect your codebase to more finely line up with the web version of flexbox. You can see what they look like in the following code example: ```javascript import { View, SafeAreaView, Text } from 'react-native'; export default function HomeScreen() { return ( <SafeAreaView> {/* Improved layout code example */} <Text style={{ margin: 10, fontSize: 24 }}> Improved layout code example </Text> <View style={{ flexDirection: 'row', backgroundColor: 'red', margin: 10, width: 200, height: 100, }} > <View style={{ flexDirection: 'row-reverse', backgroundColor: 'blue', flex: 1, marginLeft: 50, }} > <View style={{ backgroundColor: 'green', height: '50%', flex: 1, marginLeft: 50, }} /> </View> </View> {/* alignContent: "space-evenly" code example */} <Text style={{ margin: 10, fontSize: 24 }}> alignContent: "space-evenly" code example </Text> <View style={{ flexWrap: 'wrap', alignContent: 'space-evenly', height: 200, backgroundColor: 'yellow', }} > <View style={{ width: 50, height: 50, backgroundColor: 'red' }} /> <View style={{ width: 50, height: 50, backgroundColor: 'blue' }} /> <View style={{ width: 50, height: 50, backgroundColor: 'green' }} /> </View> </SafeAreaView> ); } ``` The new and improved code layout can be seen at the top of the code, which now accurately matches up with how the logic works for CSS flexbox on the web and `space-evenly` can be seen in the bottom half of the code. Due to the bug in this example, the layout would look like the following image for row reverse: ![React Native Layout Bug For Row Reverse With Blue Green And Red Colored Boxes](https://blog.logrocket.com/wp-content/uploads/2024/05/react-native-layout-bug-row-reverse.jpeg) To get a visual representation of how the new and correct code looks, take a look at the screenshot below here in an iOS simulator: ![React Native Improved Layout Code With Evenly Spaced Red Green And Blue Boxes](https://blog.logrocket.com/wp-content/uploads/2024/05/react-native-improved-layout-spaced-evenly.png) In addition to the updates mentioned above, React Native 0.74 also introduced a new Bridgeless Mode that enhances interoperability and performance by reducing the overhead caused by the JavaScript bridge that previously led to bottlenecks and slowdowns. The last major update to talk about is the new Batched Layout, which brings with it a new batched `onLayout` update that is capable of decreasing the amount of time it takes for your app to render. We can see a code example of it here: ```javascript import { useState } from 'react'; import { View, Text, StyleSheet, LayoutChangeEvent } from 'react-native'; export default function CombinedWidth() { const [combinedWidth, setCombinedWidth] = useState<number>(0); const [widths, setWidths] = useState<number[]>([0, 0, 0]); const handleChildLayout = (event: LayoutChangeEvent, index: number) => { const { width } = event.nativeEvent.layout; const newWidths = [...widths]; newWidths[index] = width; setWidths(newWidths); setCombinedWidth( newWidths.reduce((sum, currentWidth) => sum + currentWidth, 0) ); }; return ( <View style={styles.container}> <Text style={styles.text}>Combined Width: {combinedWidth}</Text> <View style={styles.row}> <View onLayout={(event) => handleChildLayout(event, 0)} style={styles.box} /> <View onLayout={(event) => handleChildLayout(event, 1)} style={styles.box} /> <View onLayout={(event) => handleChildLayout(event, 2)} style={styles.box} /> <View onLayout={(event) => handleChildLayout(event, 3)} style={styles.box} /> </View> </View> ); } const styles = StyleSheet.create({ container: { flex: 1, justifyContent: 'center', alignItems: 'center', }, text: { fontSize: 18, margin: 10, }, row: { flexDirection: 'row', }, box: { width: 50, height: 50, backgroundColor: 'green', margin: 10, }, }); ``` This code example demonstrates how to quickly determine and display the total width of multiple child elements within a parent component. It uses batched `onLayout` changes to keep the state in a performance-optimized approach and dynamically manage layout changes. Take a look at a running demo of the code in this iOS simulator screenshot: ![React Native OnLayout Code Example](https://blog.logrocket.com/wp-content/uploads/2024/05/react-native-onlayout-code-example.png) Now that we reviewed the latest features, breaking changes, and updates, let's take a look at how Yoga's flexbox implementation compares with CSS flexbox. ## Yoga's flexbox implementation vs. CSS flexbox Yoga 3.0 was designed for mobile development environments, so it is better optimized when used in React Native applications because of its integration with native mobile operating systems. When using Yoga 3.0 in React Native applications, it's possible to make use of the natural native layout systems, which result in better performance and significantly fewer calculations when creating layouts. The [Yoga 3.0 documentation on styling](https://www.yogalayout.dev/docs/styling/) covers all the available styles. In comparison, flexbox is primarily used when creating layouts for web-based applications and websites. Flexbox works inside of web browsers and makes use of their rendering engines. It is built to work with HTML and CSS and excels in those types of web-based environments. Although Yoga 3.0 is a good layout engine, there are some areas and properties of the CSS flexbox model that Yoga 3.0 either does not support or handles slightly differently. Let's take a look at some of the differences next. ### The differences between Yoga 3.0 and CSS flexbox Yoga 3.0 supports much of the CSS flexbox API, however there are some differences. One such difference is that pseudo-classes and pseudo-elements such as `:first-child` and `::before` are not supported in Yoga 3.0; styles must be used directly in the logic. It's a similar case with media queries, which are typically done through JavaScript logic like `Dimensions`, whereas in regular CSS all of these would be achieved in stylesheets. There are also some missing properties that I have listed here: * `flex-basis` * `flex-shorthand` * `flex-wrap` with `wrap-reverse` * `order` * `gap` In the following sections, we will explore them in more detail and compare them to their CSS flexbox counterparts. ### How to use `flex-basis` In CSS flexbox, the `flex-basis` property is used to set the default size for elements on a page before the remaining space is allocated. Yoga 3.0 does not support `flex-basis` and instead uses the `width` and `height` properties alongside `flex-grow` and `flex-shrink` to achieve the same effect. Comparison examples can be seen here. In this example, we can see how to do `flex-basis` in plain CSS: ```css .container { display: flex; } .item { flex-basis: 200px; height: 100px; background-color: lightblue; } ``` And here we can see what it looks like in Yoga 3.0\. In this example, we use the `width` property instead of `flex-basis`: ```javascript import { View, StyleSheet } from 'react-native'; export default function FlexBasisExample() { return ( <View style={styles.container}> <View style={styles.item} /> </View> ); } const styles = StyleSheet.create({ container: { flexDirection: 'row', justifyContent: 'flex-start', }, item: { width: 200, // Use width instead of flex-basis height: 100, backgroundColor: 'lightblue', }, }); ``` ### How to use `flex-shorthand` When using CSS flexbox, we can use the shorthand `flex` property to set different properties all on one line of code — for example, setting grow, shrink, and basis on one line as shown here: ```css flex: 1 0 auto; ``` Yoga 3.0 does not support shorthand code, meaning all properties must be set directly. ### How to use `flex-wrap` with `wrap-reverse` With CSS flexbox, it's possible to wrap elements on multiple lines using `wrap-reverse`, which is capable of reversing the direction. Yoga has support for `flex-wrap` but is unable to use `wrap-reverse`. Here we can see what it's like to use it in plain CSS: ```css .container { display: flex; flex-wrap: wrap-reverse; } .item { width: 100px; height: 100px; background-color: lightBlue; margin: 5px; } ``` As you can see, the syntax is pretty readable. And this is what it looks like when using React Native: ```javascript import { View, StyleSheet } from 'react-native'; export default function WrapReverseExample() { return ( <View style={styles.container}> <View style={styles.item} /> <View style={styles.item} /> <View style={styles.item} /> <View style={styles.item} /> </View> ); } const styles = StyleSheet.create({ container: { flexDirection: 'row', flexWrap: 'wrap', justifyContent: 'flex-start', alignItems: 'flex-end', // Align items to the end to simulate wrap-reverse effect }, item: { width: 100, height: 100, backgroundColor: 'lightblue', margin: 5, }, }); ``` In this example, we have to use `alignItems: 'flex-end',` to get the same outcome. ### How to use `order` The `order` property lets us change the order of our elements on the page or screen in the web version of flexbox. It does not appear to be well supported in Yoga, however. Let's see how this looks in the code. First is our CSS example, which you can see here for `order`: ```css .container { display: flex; } .item1 { order: 2; width: 100px; height: 100px; background-color: lightBlue; } .item2 { order: 1; width: 100px; height: 100px; background-color: lightGreen; } ``` The code works as expected with each item having its order set by numerical value. And here is our React Native code example: ```javascript import { View, StyleSheet } from 'react-native'; export default function OrderExample() { return ( <View style={styles.container}> <View style={styles.item1} /> <View style={styles.item2} /> </View> ); } const styles = StyleSheet.create({ container: { flexDirection: 'row', }, item1: { width: 100, height: 100, backgroundColor: 'lightblue', }, item2: { width: 100, height: 100, backgroundColor: 'lightgreen', }, }); ``` Order is not supported so you can't change the order of the items. ### How to use `gap` In CSS flexbox, the `gap` properties determine how much spacing there is between our flex items. This can be achieved by using the properties `gap`, `row-gap`, and `column-gap`. Yoga only has support for `gap`. Let's compare the two in our code examples. First up is our flexbox CSS example: ```css .container { display: flex; gap: 20px; width: 200px; height: 250px; padding: 10px; flex-wrap: wrap; } .item { width: 100px; height: 100px; background-color: lightBlue; } ``` As you can see, there is a 20px gap for all items inside of the container. Now let's take a look at the same code in React Native: ```javascript import { View, StyleSheet, SafeAreaView } from 'react-native'; export default function GapExample() { return ( <SafeAreaView> <View style={styles.container}> <View style={styles.item} /> <View style={styles.item} /> <View style={styles.item} /> <View style={styles.item} /> <View style={styles.item} /> <View style={styles.item} /> </View> </SafeAreaView> ); } const styles = StyleSheet.create({ container: { width: 200, height: 250, padding: 10, flexWrap: 'wrap', gap: 20, }, item: { width: 100, height: 100, backgroundColor: 'lightblue', }, }); ``` The main container also has a value of 20, for the `gap` property. After reviewing the code, we can now see how Yoga 3.0 supports different areas of the CSS flexbox model but not all of them. To achieve the same layout results on mobile, it might be necessary to try different techniques to get the same outcome. ## Conclusion Today we took an in-depth look at the improvements and updates provided by the latest version of React Native v0.74, which includes the new Yoga 3.0 API for CSS flexbox. These improvements make React Native development easier while building on existing features. Future developments are likely to further enhance React Native, reinforcing its status as one of the industry's best tools for building cross-platform mobile applications. It's worth updating your codebase to take advantage of the new features available in React Native v0.74, especially the new batched `onLayout` event, which improves performance by reducing re-renders. --- ##LogRocket: Instantly recreate issues in your React Native apps [![LogRocket Signup](https://blog.logrocket.com/wp-content/uploads/2021/10/react-native-plug_v2-2.png)](https://lp.logrocket.com/blg/react-native-signup) [LogRocket](https://lp.logrocket.com/blg/react-native-signup)is a React Native monitoring solution that helps you reproduce issues instantly, prioritize bugs, and understand performance in your React Native apps. LogRocket also helps you increase conversion rates and product usage by showing you exactly how users are interacting with your app. LogRocket's product analytics features surface the reasons why users don't complete a particular flow or don't adopt a new feature. Start proactively monitoring your React Native apps — [try LogRocket for free](https://lp.logrocket.com/blg/react-native-signup).
leemeganj
1,879,315
My Algorithms Blog「141. Linked List Cycle」
Problem The task is to determine whether a given linked list contains a cycle. The input...
0
2024-06-06T14:00:25
https://dev.to/kaisei_mima_3af68c64fcd61/my-algorithms-blog141-linked-list-cycle-4302
leetcode, python, algorithms, beginners
## Problem The task is to determine whether a given linked list contains a cycle. The input is provided in the following format, where each element represents a node's value in the linked list: ``` Input: head = [3,2,0,-4], pos = 1 Input: head = [1,2], pos = 0 ``` If the linked list contains a cycle, the function should return True; otherwise, it should return False. Note that the position `pos` where the cycle connects to the linked list is not passed as a parameter. **First approach** My initial approach uses a fast pointer and a slow pointer. The fast pointer moves two steps at a time, while the slow pointer moves one step at a time. If the fast pointer meets the slow pointer, it indicates the presence of a cycle in the linked list. However, upon reviewing my code, I believe it may be inefficient and could be optimized. ```python # Definition for singly-linked list. # class ListNode: # def __init__(self, x): # self.val = x # self.next = None class Solution: def hasCycle(self, head: Optional[ListNode]) -> bool: if not head: return False fast = slow = head while fast.next != None: if fast.next.next == None: return False else: fast = fast.next.next slow = slow.next if fast == slow: return True return False ``` - Time complexity: `O(n)` - Space complexity: `O(1)` Based on the LeetCode review, which uses Floyd's Cycle Finding Algorithm, my code is shown below in comparison to the provided answer code. ```python class Solution: def hasCycle(self, head: Optional[ListNode]) -> bool: if not head: return False slow = head fast = head.next while slow != fast: if fast is None or fast.next is None: return False slow = slow.next fast = fast.next.next return True ``` - Time complexity: `O(n)` - Space complexity: `O(1)`
kaisei_mima_3af68c64fcd61
1,879,313
HackerRank SQL Preparation: Select All(MySQL)
Problem Statement: Query all columns (attributes) for every row in the CITY table. Link:...
0
2024-06-06T13:57:03
https://dev.to/christianpaez/hackerrank-sql-preparation-select-allmysql-31da
sql, writeups, hackerrank, mysql
**Problem Statement:** Query all columns (attributes) for every row in the **CITY** table. --- **Link:** [HackerRank - Select All SQL](https://www.hackerrank.com/challenges/select-all-sql/problem) **Solution:** ```sql SELECT * FROM CITY; ``` **Explanation:** - `SELECT *`: The asterisk (*) is a wildcard character in SQL that means "all columns." This part of the query specifies that you want to retrieve all columns from the table. - `FROM CITY`: Indicates that you are selecting data from the **CITY** table. This query will return all the columns for every row in the **CITY** table. It's useful when you need to inspect or analyze all data available in the table without any specific filtering or conditions.
christianpaez
1,879,311
Lightning-fast, powerful, and ready-to-use TypeScript toolkit Introduction
AtomTools Lightning-fast, powerful, and ready-to-use TypeScript toolkit Introduction 🌟 AtomTools is...
0
2024-06-06T13:51:12
https://dev.to/linhanlove/lightning-fast-powerful-and-ready-to-use-typescript-toolkitintroduction-3cag
AtomTools Lightning-fast, powerful, and ready-to-use TypeScript toolkit Introduction 🌟 AtomTools is a modern TypeScript-based JavaScript toolkit designed to provide indispensable utility functions for project development. With simple import statements, you can quickly integrate these utility functions into your project without any complex configuration. Star History Reasons to Choose AtomTools In traditional business project development, developers often face the need to write a large number of repetitive functions, type definitions, and constants. These codes often need to be ported and reused across different projects, leading to low efficiency. The original intention of AtomTools is to provide an efficient and convenient solution, helping developers to easily manage and use these common programming elements. With AtomTools, you will be able to simplify the development process and focus more on the implementation of core business logic. Key Features 🌈 Full Compatibility: Perfectly compatible with any project developed using JavaScript or TypeScript, including WeChat mini-programs. 🚀 Blazing Speed: Enhance development speed, making programming faster and more efficient. 📠 Type Safety: Entirely written in TypeScript, providing precise type hints to enhance code robustness. 🍃 Lightweight Design: Focuses on performance and practicality, with no redundant dependencies, keeping the library lightweight. 📦 Plug-and-Play: Ready to use immediately after installation, without complex configuration. Installation Install atom-tools via NPM, YARN, or PNPM. npm install atom-tools pnpm add atom-tools yarn add atom-tools Example It is recommended to import AtomTools on an as-needed basis. Utilities import { pick } from 'atom-tools' interface Person { name: string; age: number; email: string; } const person = { name: 'John Doe', age: 30, email: 'john.doe@example.com' }; // Use the pick function to select 'name' and 'age' properties const selectedFields = pick(person, ['name', 'age']); console.log(selectedFields); // Output: { name: 'John Doe', age: 30 } Vue Custom Directive <template> <div v-observe-visibility="visibilityOptions" class="visibility-target">Am I in the viewport?</div> </template> <script setup> const handleVisibilityChange = (isVisible) => { console.log(`Element is ${isVisible ? 'visible' : 'not visible'}!`); }; const visibilityOptions = { callback: handleVisibilityChange, options: { root: null, // or specify an element as a reference rootMargin: '50px', // can be modified as needed threshold: 0.5 // can be modified to an array or a value } }; </script> Developer Community Looking for like-minded friends to participate in the development of AtomTools. If you are passionate about TypeScript, JavaScript toolkit development, welcome to join us and build a more powerful, easy-to-use set of programming tools together. Future Plans Vue Custom Directives: Provide a variety of ready-to-use Vue custom directives to simplify the development of Vue applications. Component Encapsulation: Plan to add more encapsulations of commonly used components to enhance development efficiency and user experience. Code Snippet Collection: Integrate a series of common code snippets to help developers quickly solve specific problems. AtomTools is committed to becoming a comprehensive front-end development toolkit, helping developers enhance productivity and achieve a more elegant programming experience. Join us and build the future together!
linhanlove
1,878,710
C Reflection Magic: Simple Logging with A Wrapper for Printing Arbitrary Functions Arguments and Results
This article is a research report which covers some potential implementation aspects of writing a...
0
2024-06-06T13:51:04
https://dev.to/alexey_odinokov_734a1ba32/c-reflection-magic-a-wrapper-for-printing-arbitrary-functions-arguments-and-results-1k0b
c, programming, showdev
_This article is a research report which covers some potential implementation aspects of writing a helper wrapper which will automatically log arguments and results of the arbitrary C function. This is one of the examples why reflection may be useful even in C. The implementation is based on the [Metac](https://github.com/aodinokov/metac) project. The introduction of it was given in [this article](https://dev.to/alexey_odinokov_734a1ba32/c-self-reflection-or-when-the-good-old-dwarf-makes-your-elves-face-their-unconscious-truth-5367). The research has some good results, but it still in progress. The comments on how it could be done in a better way are appreciated._ Logging is one of the important ways of debugging. Making proper logging is a key to understanding what potentially went wrong without using a debugger. But it’s annoying to print out all the arguments of each function and its result. C reflection with Metac could potentially have an ability to do this, because debugging information provided by DWARF has all the data about the type of each argument. Check it out. Here is the testing application: ```c #include <stdio.h> #include <stdarg.h> #include <stdlib.h> #include <string.h> #include "metac/reflect.h" int test_function1_with_args(int a, short b) { return a + b + 6; } METAC_GSYM_LINK(test_function1_with_args); int main() { printf("fn returned: %i\n", test_function1_with_args(1, 2)); return 0; } ``` We want to make some kind of wrapper to print arguments of `test_function1_with_args`. Metac will generate its reflection info since `METAC_GSYM_LINK(test_function1_with_args);` is in the code. For simplicity int and short argument types are selected. The first idea how we could create a wrapper is - create a macro: ```c void print_args(metac_entry_t *p_entry, ...) { // use va_args and debug information about types to print value of each argument } #define METAC_WRAP_FN(_fn_, _args_...) ({ \ print_args(METAC_GSYM_LINK_ENTRY(_fn_), _args_); \ _fn_(_args_); \ }) int main() { // use wrapper instead of printf("fn returned: %i\n", test_function1_with_args(1, 2)); printf("fn returned: %i\n", METAC_WRAP_FN(test_function1_with_args, 1, 2)); return 0; } ``` This wrapper so far handles only arguments, but it’s ok for the first step. Lets try to implement print_args. Here is the first naive attempt: ```c void print_args(metac_entry_t *p_entry, ...) { if (p_entry == NULL || metac_entry_has_paremeter(p_entry) == 0) { return; } va_list args; va_start(args, p_entry); printf("%s(", metac_entry_name(p_entry)); // output each argument for (int i = 0; i < metac_entry_paremeter_count(p_entry); ++i) { if (i > 0) { printf(", "); } // get i-th arg metac_entry_t * p_param_entry = metac_entry_by_paremeter_id(p_entry, i); if (metac_entry_is_parameter(p_param_entry) == 0) { // something is wrong break; } // if it’s … argument just print … - there is no way so far to handle that if (metac_entry_is_unspecified_parameter(p_param_entry) != 0) { // we don't support printing va_args... there is no generic way printf("..."); break; } // get arg name and info about arg type metac_name_t param_name = metac_entry_name(p_param_entry); metac_entry_t * p_param_type_entry = metac_entry_parameter_entry(p_param_entry); if (param_name == NULL || param_name == NULL) { // something is wrong break; } // lets handle only base_types for now if (metac_entry_is_base_type(p_param_type_entry) != 0) { // take what type of base type it is. It can be char, unsigned char.. etc metac_name_t param_base_type_name = metac_entry_base_type_name(p_param_type_entry); // if _type_ is matching with param_base_type_name, get data using va_arg and print it. #define _base_type_arg_(_type_, _pseudoname_) \ do { \ if (strcmp(param_base_type_name, #_pseudoname_) == 0) { \ _type_ val = va_arg(args, _type_); \ metac_value_t * p_val = metac_new_value(p_param_type_entry, &val); \ if (p_val == NULL) { \ break; \ } \ char * s = metac_value_string(p_val); \ if (s == NULL) { \ metac_value_delete(p_val); \ break; \ } \ printf("%s: %s", param_name, s); \ free(s); \ metac_value_delete(p_val); \ } \ } while(0) // handle all known base types _base_type_arg_(char, char); _base_type_arg_(unsigned char, unsigned char); _base_type_arg_(short, short int); _base_type_arg_(unsigned short, unsigned short int); _base_type_arg_(int, int); _base_type_arg_(unsigned int, unsigned int); _base_type_arg_(long, long int); _base_type_arg_(unsigned long, unsigned long int); _base_type_arg_(long long, long long int); _base_type_arg_(unsigned long long, unsigned long long int); _base_type_arg_(bool, _Bool); _base_type_arg_(float, float); _base_type_arg_(double, double); _base_type_arg_(long double, long double); _base_type_arg_(float complex, complex); _base_type_arg_(double complex, complex); _base_type_arg_(long double complex, complex); #undef _base_type_arg_ } } printf(")\n"); va_end(args); return; } ``` If we run it we will see: ```bash % ./c_print_args test_function1_with_args(a: 1, b: 2) fn returned: 9 ``` It works! But it handles only base types. And we want it to be universal. The main challenge here is with this line: ```c _type_ val = va_arg(args, _type_); ``` C's `va_arg` macro requires the type of the argument to be known at compile time. However, reflection information only provides type names at runtime. Can we trick it? `va_arg` is a macros which covers a builtin function. The second parameter is a type (very non-typical thing). But why does this thing at all needs the type? The answer is - to understand the size and to be able to take it from the stack. We need to cover all possible sizes and to get a pointer to the next argument. On Metac side we know the size of argument - we can use this snippet to get it: ```c metac_size_t param_byte_sz = 0; if (metac_entry_byte_size(p_param_type_entry, &param_byte_sz) != 0) { // something is wrong break; } ``` As a next idea let's make the macro which will cover 1 size and make sure that we handle it properly: ```c char buf[32]; int handled = 0; #define _handle_sz_(_sz_) \ do { \ if (param_byte_sz == _sz_) { \ char *x = va_arg(args, char[_sz_]); \ memcpy(buf, x, _sz_); \ handled = 1; \ } \ } while(0) _handle_sz_(1); _handle_sz_(2); _handle_sz_(3); _handle_sz_(4); // and so on ... _handle_sz_(32); #undef _handle_sz_ ``` With this approach we covered different sizes from 1 to 32. We could generate a code and cover arguments sized till any arbitrary number, but in most cases people use pointers rather than passing arrays/structures directly. For the sake of our example we’ll keep 32. Lets refactor our function to make it more reusable split it into 2 `vprint_args` and `print_args` similarly to ‘vprtintf’ and `printf`: ```c void vprint_args(metac_tag_map_t * p_tag_map, metac_entry_t *p_entry, va_list args) { if (p_entry == NULL || metac_entry_has_paremeter(p_entry) == 0) { return; } printf("%s(", metac_entry_name(p_entry)); for (int i = 0; i < metac_entry_paremeter_count(p_entry); ++i) { if (i > 0) { printf(", "); } metac_entry_t * p_param_entry = metac_entry_by_paremeter_id(p_entry, i); if (metac_entry_is_parameter(p_param_entry) == 0) { // something is wrong break; } if (metac_entry_is_unspecified_parameter(p_param_entry) != 0) { // we don't support printing va_args... there is no generic way printf("..."); break; } metac_name_t param_name = metac_entry_name(p_param_entry); metac_entry_t * p_param_type_entry = metac_entry_parameter_entry(p_param_entry); if (param_name == NULL || p_param_type_entry == NULL) { // something is wrong break; } metac_size_t param_byte_sz = 0; if (metac_entry_byte_size(p_param_type_entry, &param_byte_sz) != 0) { // something is wrong break; } char buf[32]; int handled = 0; #define _handle_sz_(_sz_) \ do { \ if (param_byte_sz == _sz_) { \ char *x = va_arg(args, char[_sz_]); \ memcpy(buf, x, _sz_); \ handled = 1; \ } \ } while(0) _handle_sz_(1); _handle_sz_(2); //... _handle_sz_(32); #undef _handle_sz_ if (handled == 0) { break; } metac_value_t * p_val = metac_new_value(p_param_type_entry, &buf); if (p_val == NULL) { break; } char * v = metac_value_string_ex(p_val, METAC_WMODE_deep, p_tag_map); if (v == NULL) { metac_value_delete(p_val); break; } char * arg_decl = metac_entry_cdecl(p_param_type_entry); if (arg_decl == NULL) { free(v); metac_value_delete(p_val); break; } printf(arg_decl, param_name); printf(" = %s", v); free(arg_decl); free(v); metac_value_delete(p_val); } printf(")"); } void print_args(metac_tag_map_t * p_tag_map, metac_entry_t *p_entry, ...) { va_list args; va_start(args, p_entry); vprint_args(p_tag_map, p_entry, args); va_end(args); return; } ``` The reader may notice that we added `p_tag_map` as the first argument. This is for the further research - it's not used in this article. Lets now try to create a part which handles the result. Unfortunately [typeof](https://en.cppreference.com/w/c/language/typeof) isn’t supported till C23 ([gcc extension](https://gcc.gnu.org/onlinedocs/gcc/Typeof.html) as an option, but it won't work with clang) and we have a dilemma - do we want to keep our `METAC_WRAP_FN` notation as is, or it’s ok to pass it one more argument - type of the function result to be used as a buffer. Probably we could use `libffi` to handle this in a universal way - Metac knows the type, but it’s not clear how to put the returned data into the buffer of the proper size. For simplicity let’s change our macro: ```c #define METAC_WRAP_FN_RES(_type_, _fn_, _args_...) ({ \ printf("calling "); \ print_args(NULL, METAC_GSYM_LINK_ENTRY(_fn_), _args_); \ printf("\n"); \ WITH_METAC_DECLLOC(loc, _type_ res = _fn_(_args_)); \ print_args_and_res(NULL, METAC_GSYM_LINK_ENTRY(_fn_), METAC_VALUE_FROM_DECLLOC(loc, res), _args_); \ res; \ }) ``` Now we’re passing `_type_` as a first argument to store the result. If we pass incorrect _type_ or arguments - the compiler will complain about this `_type_ res = _fn_(_args_)`. This is good. Printing out the result is a trivial task, we already did that in the first article. Let’s also update our test functions to accept some different types of parameters. [Here](https://github.com/aodinokov/metac/tree/dc984d445070c8a037f7aa8e14536cc8c865c433/examples/c_print_args) is the final example code. If we run it we’ll get with the comments: ```bash % ./c_print_args # show args of base type arg function calling test_function1_with_args(int a = 10, short int b = 22) fn returned: 38 # show args if the first arg is a pointer calling test_function2_with_args(int * a = (int []){689,}, short int b = 22) fn returned: 1710 # using METAC_WRAP_FN_RES which will print the result. using pointer to list calling test_function3_with_args(list_t * p_list = (list_t []){{.x = 42.420000, .p_next = (struct list_s []){{.x = 45.400000, .p_next = NULL,},},},}) fn returned: 87.820000 # another example of METAC_WRAP_FN_RES with int * as a first arg calling test_function2_with_args(int * a = (int []){689,}, short int b = 22) test_function2_with_args(int * a = (int []){689,}, short int b = 22) returned 1710 # the log where 1 func with wrapper calls another func with wrapper calling test_function4_with_args(list_t * p_list = (list_t []){{.x = 42.420000, .p_next = (struct list_s []){{.x = 45.400000, .p_next = NULL,},},},}) calling test_function3_with_args(list_t * p_list = (list_t []){{.x = 42.420000, .p_next = (struct list_s []){{.x = 45.400000, .p_next = NULL,},},},}) test_function3_with_args(list_t * p_list = (list_t []){{.x = 42.420000, .p_next = (struct list_s []){{.x = 45.400000, .p_next = NULL,},},},}) returned 87.820000 test_function4_with_args(list_t * p_list = (list_t []){{.x = 42.420000, .p_next = (struct list_s []){{.x = 45.400000, .p_next = NULL,},},},}) returned -912.180000 ``` It’s seen that Metac prints for us the `deep` representation of the arguments as well as results. In general it works, though there are some flaws like a need to handle each size of argument separately. Here are some additional limitations: 1. clang doesn't expose debug information about external functions like `printf`. That means - our wrapper won't work with that as-is. We may need to introduce some additional tricks. 2. functions with unspecified arguments `...` won't show such arguments. there is no generic way, but potentially we may want to give a way to provide a callback to extract information for such cases. 3. there is no (yet?) support for the cases of linked arguments, e.g. when we pass pointer and length as 2 separate but logically connected arguments . If you have any suggestion on how it could be more generic - please comment. Thanks for reading!
alexey_odinokov_734a1ba32
1,879,309
10 Open Source Tools for Building MLOps Pipelines
Contrary to traditional software projects, building an ML project is an iterative process and...
0
2024-06-06T13:49:36
https://jozu.com/blog/10-open-source-tools-for-building-mlops-pipelines/
beginners, devops, opensource, programming
Contrary to traditional software projects, building an ML project is an iterative process and involves numerous steps like identifying your business goals, processing data (data collection, data preprocessing, feature engineering), developing your model (training, tuning, evaluation), deploying your model (inference, prediction), and monitoring your model. Each step in the machine learning workflow introduces additional complexity and new tools to handle those complexities, which can quickly lead to a convoluted dev stack. Due to this, it is easy to lose track of the end goal: creating and deploying a model to production.[It’s estimated that 87% of machine learning models never make it to production](https://venturebeat.com/ai/why-do-87-of-data-science-projects-never-make-it-into-production/). To bridge this gap, MLOps has been introduced into enterprise AI development processes. MLOps helps increase team efficiency and efficacy when working on ML projects. There are multiple vendors building MLOps solutions, but in this blog we are going to explore 10 open source MLOps tools that can help build an effective (and flexible) MLOps pipeline. ## 10 open source tools to build an MLOps pipeline This article will focus on the following open source tools, their key features, and their pros and cons: - KitOps - Hydra - Data Version Control (DVC) - Airflow - Continuous Machine Learning (CML) - Hyperopt - Weights and Biases - MLFlow - NannyML - MetaFlow 1. **KitOps** Most MLOps libraries and frameworks handle data, code, ML models, and artifacts in isolation. In addition to this, closed source MLOps tools use vendor specific packaging standards that aren’t compatible with other tools and services. Because of this, teams are required to use a unique tool for handling each component, or repackage the project at each handoff, wasting a ton of time and making AI project development handoffs difficult. This introduces complexity since a different tool needs to be installed to handle the components of an ML project. ![KitOps is an open source MLOps tool, designed to ease model handoffs between data scientists, app dev teams, and SRE/DevOps teams](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716911894941_Screenshot+2024-05-28+at+16.57.42.png) [KitOps](https://kitops.ml/), however, treats all components in an ML project as a single software unit, making it easier to package, version, and track those components. This is called a ModelKit, and is based on the OCI-standard (similar to Docker and Kubernetes), which makes ModelKits compatible with almost every software development tool. With KitOps, it is possible to unpack individual components (data, model, or code) and work on them. This makes it easier to collaborate on the project and simplifies the dependency management. [KitOps supports](https://kitops.ml/docs/modelkit/compatibility.html) [a](https://kitops.ml/docs/modelkit/compatibility.html) [majority of the tools](https://kitops.ml/docs/modelkit/compatibility.html) in the ML ecosystem and has beginner-friendly [documentation](https://kitops.ml/docs/overview.html), making it easier to switch. {% cta https://github.com/jozu-ai/kitops %} ⭐️ Star KitOps so you can find it again later ⭐️ {% endcta %} 2. **Hydra** [Hydra](https://hydra.cc/) is a configuration management tool developed by Meta. It allows users to specify configurations via a file or the command line and supports hierarchical configurations. Hydra is extremely lightweight and easy to learn, making it ideal for beginners and experts. Furthermore, it allows users to run multiple jobs with a single command, which is ideal for the hyperparameter tuning of deep learning models. ![Hydra is a configuration management tool developed by Meta.](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716992111782_Screenshot+2024-05-29+at+15.15.07.png) However, depending on the use case, having a separate tool for configuration management can result in complex ML workflows. 3. **Data Version Control** ******(DVC)** As Git helps you with code versions and the ability to roll back to previous versions for code repositories, [DVC](https://dvc.org/) has built-in support for tracking your data and model. This helps machine learning teams reproduce the experiments run by your fellows and facilitates collaboration. DVC is based on the principles of Git and is easy to learn since the commands are similar to those of Git. Other benefits of using DVC include: - It supports cloud and on-premise hardware storage services, making it ideal for small and large teams. - The availability of a VS Code extension makes it easy to use. ![10 open source tools to help ease MLOps](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716992088514_Screenshot+2024-05-29+at+15.14.42.png) However, for large datasets, storing multiple versions of the data can lead to storage and performance overhead. 4. **Airflow** An integral part of an ML project is data acquisition and data transformation into the required format. This involves creating ETL (extract, transform, load) pipelines and running them periodically. [Airflow](https://airflow.apache.org/) is an open source platform that helps engineers create and manage complex data pipelines. Furthermore, the support for Python programming language makes it easy for ML teams to adopt Airflow. ![Airflow is an open source tools to help ease MLOps](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716992139251_Screenshot+2024-05-29+at+15.15.35.png) However, despite the benefits and support for Python, learning to use Airflow has a steep learning curve, making it less beginner-friendly. 5. **Continuous Machine Learning** ******(CML)** [Continuous Machine Learning](https://cml.dev/) (CML) is another great tool for ML teams by iterative (creator of DVC) that implements continuous integration and delivery (CI/CD) with a focus on ML. It automates model training, model evaluation, and comparison of ML models built as a result of ML experiments. ![CML is an open source MLOps tool](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716992161811_Screenshot+2024-05-29+at+15.15.56.png) Implementing CML is similar to writing GitHub Actions, hence it is beginner-friendly. Additionally, the output of steps in the CML is displayed as GitHub comments, which makes it easier to comment and collaborate. 6. **Hyperopt** ML models involve numerous hyperparameters whose values can influence the model's overall performance. The only way of finding the best value for those parameters is to run the models with different sets of hyperparameter values, record the performance, and compare them. When done manually, this can be cumbersome. [Hyperopt](http://hyperopt.github.io/hyperopt/) helps in automated hyperparameter optimization. ![MLOps and AIOps tools that are open source, Hyperopt](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716992207580_Screenshot+2024-05-29+at+15.16.44.png) An advantage of hyperopt is that it can be run on a single computer or in a distributed setting. 7. **Weights and Biases** [Weights and Biases](https://github.com/wandb/wandb) (W&B) ****is a tool for visualizing and tracking machine learning experiments. It supports major machine learning frameworks such as TensorFlow and PyTorch. Its key features include: - Dataset and model parameters visualization - Model tracking and data tracking - Hyperparameter optimization for deep learning models - Create reports using the artifacts tracked using weights and biases ![Weights and Biases has an open source MLOps component](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716992247341_Screenshot+2024-05-29+at+15.17.23.png) It is a combination of DVC, CML, and Hyperopt. But, unlike those tools, Weights and Biases is only free for experimentation (single user) and academics. If you want to use it for a commercial product, you can host it on your own premises, if you have the compute resources, or use W&B’s cloud infrastructure. 8. **MLflow** [MLflow](https://mlflow.org/) is an open source MLOps tool that allows users to manage the entire life cycle of machine learning models. It has four key components: - **MLflow tracking**: Tracks parameters, code, and results in machine learning experiments with support for hyperparameter tuning - **MLflow projects**: Packaging format for ML code for reproducible runs - **MLflow model registry**: A centralized registry for storing models - **MLflow models**: A packaging format for quickly deploying ML models to cloud platforms such as Azure ML and AWS SageMaker ![MLflow is open source](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716992282239_Screenshot+2024-05-29+at+15.17.59.png) Since it supports all major ML libraries, it can be an excellent tool for your organization. However, engineers will need to spend significant time learning about the tool and its key features before fully utilizing it. 9. **NannyML** In machine learning projects, it is difficult to estimate whether improvement in model metrics will result in a positive change in business value. Furthermore, a model’s performance can change with time. [NannyML](https://github.com/NannyML/nannyml/tree/main) is an open source Python library that focuses on production monitoring and allows users to detect drifts (data and label), check data quality, estimate post-deployment model performance, and intelligently generate an alert if the drift is likely to impact model performance. ![NannyML is one of the 10 open source MLOps tools](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716992319348_Screenshot+2024-05-29+at+15.18.35.png) NannyML has a free and premium version. The core features of the monitoring tools are available on both versions, but there are some features that are unique to the premium version. A detailed [comparison between both versions](https://www.nannyml.com/oss-vs-cloud) is available for your review. 10. **Metaflow** [Metaflow](https://github.com/Netflix/metaflow) is an open source Python library that allows engineers to build and manage ML projects. It focuses on rapid prototyping and reducing time from development to production. It makes the job of ML data scientists easier by taking care of the low-level infrastructure: data, compute, orchestration, and versioning. ![Build an open source MLOps pipeline with Metaflow](https://paper-attachments.dropboxusercontent.com/s_38D2D01966F71DF6A31BCE7CF51B7F3B6EEC207093431039033CBA4D17767B3A_1716992344241_Screenshot+2024-05-29+at+15.18.57.png) ## How do you choose the right tools to build an MLOps pipeline? Now that we’ve covered some of your options, how do you select the best MLOps tools for your use case? Well, there are a few criteria you could use: - Team expertise - Budget - Scope - Documentation and support Let’s go through each of them in detail. **Team expertise** The expertise of your current ML team hugely impacts the choice of tools you can use. For instance, if your team has expertise in Python but the tool doesn’t support Python language, you should look for an alternative. Keep in mind that the tools listed above are open source and managing an open source tool can have a steep learning curve. **Budget** Some tools like MLflow and Weights and Biases have freemium and premium versions. Before making a decision, it is better to check if the freemium version has all the features you need. If it doesn’t and you still want to use the tool, consider your budget before deciding. The tools we’ve listed above are all open source and can be used for free, however, there are limitations to many of the open source projects that should be explored before making the decision to adopt the tool. **Scope** Tools like DVC and Hyperopt are very specific in what they can do. DVC is only used for tracking data and models, while hyperopt is only used for optimizing hyperparameters—and there are other tools that try to do everything. If your requirements are fulfilled by lightweight tools that provide specific functionalities, it is better to stick with them as they will result in less storage and performance overhead. **Documentation and support** Regarding software products, choosing a tool with good documentation and support with fewer features is better than a tool with poor documentation and support and more features. With good documentation, you can always extend the tool with missing features, but if the documentation is poor, you will likely get stuck if a problem arises. Before choosing an open source tool, we encourage you to read the documentation, visit the respective Slack or Discord channel, and ask questions to gauge the response time and quality of support delivered by the team behind the tool. The list of tools we’ve given in this post are well documented and have active communities and contributors.
jwilliamsr
1,879,310
Boost Productivity and Data Accuracy: Essential Tactics for Software Integration
Understanding Software Integration Nowadays, integration has become a fundamental aspect...
0
2024-06-06T13:49:22
https://dev.to/rutikakhaire/boost-productivity-and-data-accuracy-essential-tactics-for-software-integration-3hjn
## Understanding Software Integration Nowadays, integration has become a fundamental aspect of software development. Every organization strives to remain competitive in today's fast-paced world. Integration enables different systems to communicate seamlessly and share information efficiently. The most effective software integration strategies involve thorough planning, clear communication, and collaborative efforts among teams. **Why do we need Software Integration** - _**Enhanced Workflow Efficiency**_: Automating the flow of information between systems speeds up business processes and minimizes delays. - _**Unified Data Management**_: Integrated systems ensure that data is consistent and up-to-date across all platforms, reducing the risk of errors caused by data discrepancies. - _**Real-time Data Access**_: Changes made in one system are instantly reflected across all integrated systems, ensuring all users have access to the latest information. - _**Automation of Tasks**_: By automating routine and complex processes, integration frees up employees to focus on higher-value activities. - _**Reduced Operational Costs**_: Integration reduces the need for maintaining multiple systems and data silos, lowering IT and operational expenses. ## Key Integration Tactics **What it is**: Key Integration Tactics are strategies and approaches used to effectively connect different software applications and data sources. They ensure smooth information flow and collaboration between these systems. **Why they matter**: Without proper tactics, integration projects can become complex, error-prone, and ultimately fail to deliver the desired benefits. **Different methods of Integration** **_API Integration_**: This allows different software systems to communicate with each other via APIs. **_Middleware_**: There are various middleware that can be employed to facilitate communication between systems. **_Webhooks_**: This helps in real-time data exchange. **Microservices**: This breaks down applications into smaller, interconnected services. ## Planning and Choosing the Right Tactics <u>**Data mapping and standardization**</u> This is one of the crucial tactics to ensure smooth and accurate communication between different software applications. There are several benefits that include **data accuracy**, **efficiency**, **maintainability** and **interoperability**. <u>**Reconciliation fields**</u> Though reconciliation fields are not a universally defined concept in software integration, but they play a crucial role in ensuring data consistency between integrated systems. **What are reconciliation fields?** Reconciliation fields are specific data points used to compare and identify discrepancies between data sets in integrated systems. They act as a common ground for both systems to verify if the information they hold aligns. Few advantages of using reconciliation fields include pinpointing the source of the error and taking corrective actions by analyzing discrepancies in such fields. Reliable data from reconciled systems leads to better insights and informed decisions. <u>**Error Handling and Security**</u> Implementation of robust error handling and security measures is another crucial tact to ensure smooth integration. It is a process of anticipating, detecting, and recovering from unexpected issues that may arise during data exchange between integrated systems. **Few techniques to implement it include:** 1. **Logging errors**: This is one of the very first go-to option in order to tackle issues and understand the root causes behind the problems. 2. **Retry logics**: You can implement logics that would re attempt data transfers after some delay. 3. **Alerts**: There are different ways to define alert systems to notify respective teams about issues to take necessary and appropriate actions. **<u>Testing and Monitoring</u>** Thorough testing and ongoing monitoring are the most essentials for ensuring the smooth operation and long-term success of your software integration project. **Testing** in simple words means ensuring that the integration meets the requirements and the data exchange functions accurately. There are various types of testing like below that really help in ensuring that systems meets all expectations. 1. Unit testing 2. Integration testing 3. Regression testing 4. Smoke testing 5. Functional and Non-Functional testing 6. System testing 7. Load testing 8. Negative testing **Monitoring** on the other hand involves continuously observing the performance and the health of the integrated system after it is deployed. There are different metrics available that help in tracking the exchange of data and identify failed transactions. **Future Trends in Software Integration** Software integration is constantly evolving, driven by advancements in technology and the growing need for seamless data exchange across an ever-expanding application ecosystem. Here's a glimpse into some key trends shaping the future of software integration: **The Internet of Things (IoT)**: Integrating with IoT devices is going to become crucial in order to manage and analyze data collected from sensors and intelligent devices. **Artificial intelligence (AI) and Machine Learning (ML)**: AI and ML can be used to automate tasks within the integration process, like data mapping and error handling. Additionally, AI-powered integration platforms can learn and adapt over time, optimizing performance. **Low-Code/No-Code Integration Tools**: There is a rise in tools that empower business users with limited or no coding experience to build basic integrations. These trends highlight a future where software integration becomes more accessible, automated, and secure. **Looking Ahead** By adopting the key tactics explored in this blog, you can approach software integration projects with confidence. Remember, successful integration goes beyond just connecting systems. It's about establishing a well-defined strategy, utilizing the right tools and methods, and prioritizing ongoing maintenance and monitoring.
rutikakhaire
1,879,308
Revolutionizing Payments: The Future Of MLC Payment Technology
MLC Payments: Revolutionizing Payment Processing MLC payments, short for Multi-Layered...
0
2024-06-06T13:48:19
https://dev.to/saumya27/revolutionizing-payments-the-future-of-mlc-payment-technology-3ha4
**MLC Payments: Revolutionizing Payment Processing** MLC payments, short for Multi-Layered Cryptocurrency payments, represent a transformative approach to digital transactions. Leveraging blockchain technology, MLC payments offer enhanced security, efficiency, and transparency, addressing many limitations of traditional payment systems. **Key Features of MLC Payments** **1. Enhanced Security:** - Blockchain Technology: MLC payments utilize blockchain to ensure transactions are secure and immutable. Each transaction is recorded on a decentralized ledger, making it resistant to fraud and tampering. - Multi-Layered Security Protocols: Multiple layers of encryption and authentication safeguard transactions, providing an extra level of protection against cyber threats. **2. Efficiency and Speed:** - Fast Transactions: By eliminating intermediaries, MLC payments can be processed much faster than traditional banking methods. This is particularly beneficial for international payments, which can be completed in minutes rather than days. - Lower Transaction Fees: Reduced reliance on third parties leads to lower fees, making MLC payments a cost-effective option for businesses and consumers alike. **3. Transparency and Traceability:** - Immutable Ledger: Every transaction is permanently recorded on the blockchain, providing a clear and auditable trail. This transparency builds trust among users and regulatory bodies. - Smart Contracts: Automated, self-executing contracts with the terms of the agreement directly written into code can facilitate transactions, ensuring they are completed only when predefined conditions are met. **4. Global Accessibility:** - Borderless Payments: MLC payments can be made anywhere in the world, overcoming the limitations of traditional financial systems. This global reach is essential for businesses operating in multiple countries. - Financial Inclusion: By providing an alternative to traditional banking, MLC payments can help bring financial services to unbanked and underbanked populations. **Applications of MLC Payments** **E-commerce:** - Seamless Checkout: MLC payments can streamline the checkout process, reducing cart abandonment rates and improving the customer experience. - Cross-Border Sales: Businesses can easily sell to international customers without worrying about currency conversion or high transaction fees. **Remittances:** Low-Cost Transfers: Migrant workers can send money to their families at a fraction of the cost of traditional remittance services. Immediate Access: Recipients can access funds quickly, improving their financial stability. **Subscription Services:** - Automated Billing: Smart contracts can manage recurring payments, ensuring timely and accurate billing without manual intervention. - Flexible Payment Options: Customers can pay with a variety of cryptocurrencies, providing greater flexibility and convenience. **Supply Chain Management:** - Transparent Transactions: Every step of a supply chain transaction can be recorded on the blockchain, enhancing transparency and accountability. - Efficient Payments: Suppliers can receive payments faster, improving cash flow and reducing reliance on credit. **Conclusion** [MLC payments](https://cloudastra.co/blogs/the-future-of-mlc-payment-technology) are poised to revolutionize the way we conduct financial transactions. By leveraging the power of blockchain technology, they offer unparalleled security, efficiency, and transparency. Whether for e-commerce, remittances, subscription services, or supply chain management, MLC payments provide a versatile and robust solution for modern payment processing needs. As adoption continues to grow, MLC payments will play a critical role in the future of finance, enabling faster, safer, and more inclusive financial services worldwide.
saumya27
1,879,307
How Many Hotels Are Included in Clock Tower Makkah?
The Clock Tower Makkah, also known as Abraj Al Bait, is a significant landmark in the heart of...
0
2024-06-06T13:47:56
https://dev.to/chsalaar50/how-many-hotels-are-included-in-clock-tower-makkah-46d9
The Clock Tower Makkah, also known as Abraj Al Bait, is a significant landmark in the heart of Makkah, Saudi Arabia. This architectural marvel is not only an iconic part of the city's skyline but also a central hub for pilgrims visiting the Holy Kaaba. This article explores the various aspects of the Clock Tower, focusing on the number of hotels it houses and providing insights into the overall experience for travelers and pilgrims. ## Overview of Clock Tower Makkah The Clock Tower Makkah is part of the Abraj Al Bait complex, which is one of the tallest buildings in the world. Located directly adjacent to the Masjid al-Haram, the complex is a significant part of the cityscape, providing a range of facilities including residential apartments, shopping centers, and luxury hotels. The most prominent feature of the complex is the Makkah Royal Clock Tower, which is topped with a massive clock face visible from miles away. The entire complex serves as a pivotal point for millions of pilgrims who visit Makkah each year for Hajj and Umrah. Its strategic location and comprehensive amenities make it an ideal destination for those seeking convenience and luxury during their spiritual journey. Among the various facilities, the hotels in Clock Tower Makkah stand out for their exceptional services and accommodations, designed to cater to the diverse needs of international travelers and pilgrims. ### Number of Hotels in Clock Tower Makkah The Clock Tower Makkah houses several world-class hotels, each offering unique experiences and exceptional hospitality. There are a total of seven hotels within the Abraj Al Bait complex, each providing varying levels of luxury and comfort to suit different preferences and budgets. These hotels are: ### Fairmont Makkah Clock Royal Tower: Known for its unparalleled luxury, this hotel offers breathtaking views of the Kaaba and the Holy Mosque. The Fairmont brand is synonymous with elegance and exceptional service, making it a preferred choice for many visitors. ### Raffles Makkah Palace: This all-suite hotel provides a highly personalized experience, with each suite offering stunning views of the Holy Mosque. Raffles Makkah Palace is renowned for its spacious accommodations and exceptional amenities. ### Swissôtel Makkah: Combining Swiss hospitality with the spiritual essence of Makkah, Swissôtel offers contemporary rooms and suites that cater to both business and leisure travelers. ### Mövenpick Hotel & Residences Hajar Tower Makkah: This hotel provides a blend of traditional hospitality and modern comforts, ensuring a memorable stay for all guests. Its proximity to the Holy Mosque makes it a popular choice. ### Pullman ZamZam Makkah: Featuring elegantly designed rooms and suites, Pullman ZamZam Makkah offers a serene and comfortable environment for pilgrims and visitors alike. ### Retaj Al Bayt Suites: This hotel focuses on providing spacious and comfortable accommodations, ideal for families and larger groups visiting Makkah. ### Al Marwa Rayhaan by Rotana: Known for its contemporary design and excellent service, this hotel is a part of the prestigious Rotana group and offers a range of amenities to enhance the stay of its guests. These [hotels in Clock Tower Makkah](https://albarakaholidays.com/how-many-hotels-in-the-clock-tower-makkah/) are equipped with state-of-the-art facilities, including fine dining restaurants, fitness centers, business centers, and more. They are designed to provide guests with a holistic experience, combining luxury, comfort, and convenience. ### Accommodation and Services in Clock Tower Hotels The hotels within the Clock Tower Makkah offer a wide range of accommodations to suit various needs. From luxurious suites to more modest rooms, each hotel ensures that guests experience the utmost comfort during their stay. Here are some key features and services provided by these hotels: ### Luxurious Accommodations Each hotel offers a selection of rooms and suites, many of which provide spectacular views of the Holy Kaaba and the surrounding city. The rooms are tastefully decorated with a blend of modern and traditional elements, providing a serene and comfortable atmosphere. Amenities typically include high-speed internet, flat-screen TVs, mini-bars, and 24-hour room service. Fine Dining Options The hotels in Clock Tower Makkah boast a variety of dining options, ranging from international cuisines to traditional Middle Eastern dishes. Guests can enjoy a diverse culinary experience without having to leave the complex. Many hotels feature multiple restaurants, cafes, and lounges, each offering a unique ambiance and menu. ### Wellness and Fitness Facilities To cater to the wellness needs of guests, these hotels are equipped with state-of-the-art fitness centers and spas. Guests can indulge in a range of treatments and therapies designed to rejuvenate the body and mind. The fitness centers are equipped with modern exercise equipment, ensuring that guests can maintain their fitness routines during their stay. Business and Meeting Facilities For business travelers, the hotels offer comprehensive business centers and meeting facilities. These spaces are equipped with the latest technology and are designed to accommodate a variety of events, from small meetings to large conferences. The professional staff is on hand to assist with planning and execution, ensuring the success of any event. Booking and Travel Tips Planning a trip to Makkah and booking a stay at one of the hotels in Clock Tower Makkah requires careful consideration and preparation. Here are some tips to help ensure a smooth and enjoyable experience: Booking Through a Travel Agency Using a [travel agency](https://albarakaholidays.com/) can simplify the process of booking accommodations and organizing travel arrangements. Travel agencies often have special packages and deals that include flights, transfers, and hotel stays. They can also provide valuable advice and assistance with obtaining necessary travel documents, such as visas. Choosing the Right Hotel When selecting a hotel within the Clock Tower Makkah, consider your budget, preferences, and specific needs. For instance, if you are traveling with family, a hotel that offers larger suites and family-friendly amenities might be the best choice. If proximity to the Holy Mosque is a priority, choose a hotel that offers direct views and easy access to the Haram. Peak Seasons and Availability Makkah experiences peak seasons during the Hajj pilgrimage and the month of Ramadan. During these times, hotel prices can be higher, and availability may be limited. It is advisable to book well in advance to secure your preferred accommodation. Off-peak seasons may offer more competitive rates and greater availability. Understanding Hotel Policies Before finalizing your booking, familiarize yourself with the hotel's policies regarding check-in and check-out times, cancellation fees, and other terms and conditions. This will help avoid any unexpected charges or inconveniences during your stay. Conclusion The Clock Tower Makkah is a remarkable landmark that offers a range of luxury accommodations for pilgrims and visitors to the Holy City. With seven world-class hotels, the complex provides an unparalleled combination of convenience, comfort, and spiritual proximity. Whether you are visiting for Hajj, Umrah, or simply exploring the rich heritage of Makkah, the hotels in Clock Tower Makkah ensure a memorable and enriching experience. By planning ahead and utilizing the services of a reliable travel agency, you can make the most of your visit and enjoy the exceptional hospitality that these hotels have to offer.
chsalaar50
1,879,306
Key principles to writing better Javascript
Since the day I started writing code, I believe I was always writing bad code. I didn’t notice it was...
0
2024-06-06T13:46:39
https://dev.to/mtendekuyokwa19/key-principles-to-writing-better-javascript-no9
webdev, javascript, beginners
Since the day I started writing code, I believe I was always writing bad code. I didn’t notice it was bad until I started working on a mini-project that was not really mini. As the project grew , I found myself debugging my project just to slot in the features and updates. Accepting this was like eating a boiled sweet potato without a drink(a Malawian equivalent proverb to hard pill to swallow). But I had to accept this_ uncomfortability_. I first started by hunting for tips and experiences mostly on Hacker news and Reddit. The collection of blog post mostly lead to the SOLID principle We’re SOLID? yes SOLID is and abbreviation that screams Single responsibility, Open-closed,Liskov substitution, Interface segregation,Dependency Inversion. It is 100% okay if this sounds like something off a philosophical book.Out of the five, I really wanna tether around Single responsibility. SINGLE RESPONSIBILITY This principle drives my daily function architecture. A function should only do one thing. If your function is made to add two numbers that’s all it should do, nothing extra. You’ll sometimes find yourself questioning whether the task my function is one. Let me support this previous statement with a snippet. ``` function multiply(a,b){ return a*b; } ``` This function above clearly does one thing and thats (drum roll) multiplication. Hence this qualifies as single responsibility. Evaluate this next snippet ``` function multiply(a,b,answer){ answer=a*b; return answer; } ``` The second function also qualifies as single responsibility. But the second function is bad code. The core reason why the second function is bad is that it involves manipulation of outside values(answer). The terminology for this is mutation. Even though mutation has alot of advantages its downside is that if alot of functions are mutating it becomes hard to track where bugs are coming from. FYI, this reason is also why global variables are discouraged. Some languages even use access modifiers to prevent this. Single responsibility should always be considered when you are writing your functions because it is easier to track bugs and makes easier addition of features when scaling.
mtendekuyokwa19
1,879,305
Make flutter builds easier
A post by Cristovão Farias
0
2024-06-06T13:45:30
https://dev.to/cristovoxdgm/make-flutter-builds-easier-17ab
flutter, mobile, developer, newbie
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/il7sjwlowmz6olc92q8x.png)
cristovoxdgm
1,879,304
AI Homework Helper - Apex Vision AI
Apex Vision AI is an innovative Chrome extension designed to be the ultimate AI homework helper. This...
0
2024-06-06T13:45:09
https://dev.to/youcef_appmaker/ai-homework-helper-apex-vision-ai-5753
ai, education
Apex Vision AI is an innovative Chrome extension designed to be the ultimate AI homework helper. This tool provides instant, accurate homework solutions, making studying more efficient for students. Whether you need help with math, science, literature, or any other subject, Apex Vision AI offers real-time assistance to ensure you get the right answers quickly. It seamlessly integrates with platforms like Canvas and McGraw Hill, automatically filling in answers and simplifying the learning process. With features like detailed explanations, undetectability, instant answers, and a user-friendly interface, Apex Vision AI stands out as a reliable AI homework solver. It's not just about getting answers; it's about understanding the material better and boosting your academic performance. Regular updates keep the tool accurate and effective, making it an essential study companion for any student looking to enhance their learning experience.[](https://apexvision.ai/)
youcef_appmaker
1,879,303
Unlocking Ethereum Scalability with Scroll and Wormhole Integration
Unlocking Ethereum Scalability with Scroll and Wormhole Integration The Ethereum...
0
2024-06-06T13:43:34
https://dev.to/nuel_ikwuoma/unlocking-ethereum-scalability-with-scroll-and-wormhole-integration-44ci
wormhole, scroll, defi
## Unlocking Ethereum Scalability with Scroll and Wormhole Integration The Ethereum blockchain, popular for its decentralized applications (dApps) and Smart Contracts, experiences serious scalability challenges. To address these, various Layer 2 (L2) solutions have surfaced, rendering enhanced throughput and minimizing costs while maintaining Ethereum’s security and decentralization. Among these solutions, Scroll remains one of the most innovative zkEVM (zero-knowledge Ethereum Virtual Machine) validity rollups. This article explains how Scroll enhances Ethereum’s scalability and the impact of its integration with Wormhole, facilitating the deployment of Ambient Finance, c3, and Synonym on the Scroll network. ### Understanding Scroll’s zkEVM Rollup Scroll is an enhanced Layer 2 scaling solution that leverages EVM, a zero-knowledge rollup designed to scale Ethereum applications without needing specialized circuit designs. Zero-knowledge proofs (ZKPs) are known for verifying how credible a statement is without the statement itself. When used on blockchains, ZKPs can verify a large number of transactions off-chain and then batch them into a single proof submitted on-chain. This process significantly helps to minimize computational load and gas fees. Scroll’s zkEVM is particularly intriguing because it maintains Ethereum Virtual Machine (EVM) congruence, meaning developers can dispatch existing Ethereum smart contracts on Scroll with minimal changes. This congruence ensures that developers can maximize the existing tools, languages, and frameworks built for Ethereum, facilitating a seamless transition and broader adoption. ### How Scroll Works #### 1. Transaction Batching Transactions are initially processed off-chain in a Layer 2 environment. #### 2. Proof Generation These transactions are then bundled together, and a succinct proof (zk-SNARK) is generated to attest to their validity. #### 3. On-Chain Verification The proof is passed on to the Ethereum mainnet, where Smart Contracts verifies it. Through this process, computational resources and amount of data required are drastically reduced, ultimately, leading to lower gas fees and faster transactions. By using this method, Scroll achieves high throughput and cost efficiency without compromising on security. The validity rollup ensures that all off-chain transactions are cryptographically secure and verifiable on-chain. ### Bridging Ecosystem with the aid of Wormhole Ecosystems Wormhole is a cross-chain transmission protocol that eases interchangeability between different blockchain networks. Through the integration of Wormhole with Scroll, several prominent dApps—Ambient Finance, c3, and Synonym—are now set to be deployed on Scroll, bringing with them new functionalities and user experiences. #### Ambient Finance Ambient Finance leverages on the services rendered by decentralized finance to provide users with various financial products, including lending, borrowing, and asset management. Deploying on Scroll via Wormhole allows Ambient Finance to offer these services with lower transaction costs and higher efficiency, attracting a broader user base and enabling more complex financial products. #### c3 c3 focuses on decentralized data storage and management. By integrating with Scroll, c3 benefits from reduced data storage costs and enhanced speed, crucial for applications handling large volumes of data. This integration also enhances c3’s ability to offer scalable solutions to enterprises requiring decentralized storage. #### Synonym Synonym aims to streamline cross-chain asset transfers and decentralized exchanges. With Wormhole and Scroll, Synonym can facilitate faster and cheaper transactions, improving the overall user experience in the decentralized finance (DeFi) ecosystem. This deployment ensures that users can move assets across different blockchains seamlessly, leveraging Scroll’s efficiency and Wormhole’s interoperability. ### The Future of Ethereum Scaling The integration of Scroll and Wormhole is one of the prominent moves towards addressing challenges associated with Ethereum’s scalability. This is because the integration fosters the maximization of the strengths of zKEVM roll ups when combined with cross-chain interoperability, rendering a robust framework for developing scalable, secure, and cost-effective networks. Scroll and Wormholes integration represents a significant step forward in addressing Ethereum’s scalability issues. By combining the strengths of zkEVM rollups and cross-chain interoperability, they offer a robust framework for developing scalable, secure, and cost-effective decentralized applications. #### Key Benefits * Enhanced Scalability Scroll’s zkEVM rollup drastically increases transaction throughput and reduces costs. * Seamless Interoperability Wormhole enables cross-chain communication, allowing dApps to operate across multiple blockchains. * Broader Adoption With EVM compatibility, existing Ethereum dApps can easily migrate to Scroll, benefiting from its scalability improvements. #### Challenges Ahead This integration is promising, however, it also comes with challenges like ensuring robust security during cross-chain interactions and preserving all the ethos of decentralization in the Ethereum Ecosystem. In order to address these challenges, there is a need to embark on continuous development and rigorous testing. ### Conclusion When it comes to Ethereum Scaling, merging Scroll’s zkEVM rollup with Wormhole is vital as it not only improves the performance and cost-efficiency of dApps but also facilitates a more interdependent blockchain ecosystem. With Ambient Finance, c3, and Synonym all deployed on Scroll, both users and developers can anticipate an Ethereum network with higher scalability and versatility, which could usher the web3 industry into the next generation of decentralized applications.
nuel_ikwuoma
1,879,302
Ini adalah contoh rekomendasi
ini link saya tentang rekomendasi jangkrik bos
0
2024-06-06T13:43:31
https://dev.to/emtrade_fakhri_8d2fc62a92/ini-adalah-contoh-rekomendasi-2lcp
ini link saya tentang rekomendasi [jangkrik bos](https://jangkrikbos07.wordpress.com/)
emtrade_fakhri_8d2fc62a92
1,879,301
Improve Your Prompt Engineering Skills: Key Points
Clarity and Specificity: Ensure prompts are clear and specific to avoid ambiguity. Example: Ask...
0
2024-06-06T13:40:37
https://dev.to/arpit_dhiman_afe108fe83fb/improve-your-prompt-engineering-skills-key-points-3e4m
![ Prompt Engineering Skills](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/aqczomeb1izqrybg66qx.jpg) **Clarity and Specificity:** Ensure prompts are clear and specific to avoid ambiguity. Example: Ask detailed questions like "What are the latest advancements in AI in 2024?" **Contextualization:** Provide context to guide relevant responses. Example: "In the context of environmental sustainability, what are the key benefits of electric vehicles?" **Step-by-Step Instructions:** Break down complex queries into smaller steps. Example: "First, explain blockchain technology principles. Then, discuss its applications in finance." **Use of Examples:** Include examples to clarify expected responses. Example: "Summarize the plot of '1984' by George Orwell, starting with the setting and main characters." **Open vs. Closed Questions:** Decide between open-ended or closed responses based on need. Open-ended: "What are the benefits of renewable energy sources?" Closed: "Is solar energy a renewable resource?" **Avoid Overloading the Prompt:** Don’t pack too much information or multiple questions into one prompt. Ensure Specificity: Avoid general prompts; be specific for detailed answers. Example: "Discuss the impact of AI on job automation in manufacturing." Real-World Applications **Content Creation:** Generate engaging and relevant content. **Education:** Create better learning materials and detailed explanations. **Customer Support:** Design prompts for accurate and helpful responses.
arpit_dhiman_afe108fe83fb
1,879,300
Exploring the Capabilities of GPT-4o
Hey there, fellow tech enthusiasts! If you're as excited about AI advancements as I am, then you're...
0
2024-06-06T13:40:36
https://dev.to/mohith/exploring-the-capabilities-of-gpt-4o-35mj
openai, chatgpt, ai
Hey there, fellow tech enthusiasts! If you're as excited about AI advancements as I am, then you're in for a treat. Open AI has just rolled out GPT-4o, the latest and greatest in their series of Generative Pre-trained Transformers. This new version takes everything we loved about GPT-4 and cranks it up a notch. Let’s dive into what makes GPT-4o so special, how it can be used, and why it’s a game-changer. So, what exactly is GPT-4o? In a nutshell, it stands for Generative Pre-trained Transformer 4 Optimized. This means it’s a fine-tuned, supercharged version of GPT-4, designed to be more accurate, faster, and versatile. Think of it as GPT-4’s smarter, more efficient sibling. - **Enhanced Accuracy:** GPT-4o has been trained on even larger datasets, including more diverse and recent information. This helps it generate more accurate and contextually relevant responses. - **Faster Performance:** Thanks to optimizations in the underlying architecture, GPT-4o processes requests quicker than ever. Whether you're building a chatbot or analyzing large datasets, this speed boost can make a huge difference. - **Versatility:** GPT-4o isn’t just about chat – it’s designed to handle a wide array of tasks from coding assistance to content creation, data analysis, and more. How Can GPT-4o Help? As someone who’s constantly juggling multiple projects, GPT-4o has been a real lifesaver. Here are a few ways it’s made my life easier and more productive: **Coding Assistant:** Whether I'm debugging code or brainstorming new features, GPT-4o has been incredibly helpful. Check out this example of using GPT-4o to generate a Python script: ``` import openai def generate_code(prompt): response = openai.Completion.create( engine="gpt-4o", prompt=prompt, max_tokens=150 ) return response.choices[0].text.strip() code_prompt = "Write a Python function to reverse a string." print(generate_code(code_prompt)) ``` - **Content Creation:** From writing blog posts to drafting emails, GPT-4o helps me generate high-quality text quickly. Imagine having an AI that can write a compelling introduction for your next article in seconds. - **Data Analysis:** Analysing large sets of data can be daunting, but GPT-4o simplifies the process by generating insightful summaries, extracting key points, and even suggesting data visualizations. <u>**Why GPT-4o is So Useful**</u> The advancements in GPT-4o are more than just technical improvements – they represent a leap forward in how we interact with machines. By providing more accurate, faster, and versatile AI, GPT-4o can help us tackle complex problems, enhance productivity, and even spark creativity in ways we never thought possible. Personally, GPT-4o has been invaluable in streamlining my workflow and expanding my creative capabilities. Whether I’m working on coding projects, content creation, or data analysis, GPT-4o offers powerful tools that make my job easier and more efficient. **Ready to Explore GPT-4o?** If you’re eager to see what GPT-4o can do, you can try it out for yourself. Check out the https://platform.openai.com/docs/models/gpt-4o to get started. Whether you’re a developer, a writer, or just curious about AI, there’s something here for everyone.
mohith
1,879,299
Happy Birthday Gifs
You can view more Gifs at here
0
2024-06-06T13:40:29
https://dev.to/emanc/happy-birthday-gifs-36ao
gif, birthday, webdev, graphic
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/3wgfayjg3gi3pqobo90z.gif) You can view more Gifs at [here](https://fastxarticle.wordpress.com/)
emanc
1,879,297
Security and Compliance
Shared Responsibility Model: This model defines what security responsibilities are handled by AWS and...
0
2024-06-06T13:39:32
https://dev.to/warrisoladipup2/security-and-compliance-4d8m
**<u>Shared Responsibility Model</u>**: This model defines what security responsibilities are handled by AWS and what is handled by the customer/you. _Scenario:_You’re hosting an application on AWS. AWS is responsible for the physical security of the servers, while you are responsible for managing your data and access controls. **<u>Well-Architected Framework:</u>** This framework consists of five pillars (Operational Excellence, Security, Reliability, Performance Efficiency, and Cost Optimization) that provide best practices for designing reliable, secure, efficient, and cost-effective systems in the cloud. _Scenario:_ You’re designing a scalable e-commerce platform. The Well-Architected Framework helps ensure it remains secure, reliable, and cost-efficient even as traffic grows. **<u>_Security Basics_</u>** 1.**<u>Identity and Access Management (IAM)</u>**: IAM enables you to manage users and their access to AWS services and resources securely. •Scenario: You’re setting up a team project on AWS. You create IAM users for each team member and assign roles with specific permissions to ensure they only access what they need. 2.**<u>Web Application Firewall (WAF)</u>**: WAF helps protect your web applications by filtering and monitoring HTTP and HTTPS requests. •Scenario: Your website is getting attacked by bots trying to exploit vulnerabilities. WAF blocks these malicious requests, keeping your site secure. **_<u>Threat Protection</u>_** 1.**<u>Shield</u>**: Shield is a managed DDoS protection service that safeguards applications from DDoS attacks. Scenario: Your online service experiences a massive influx of traffic due to a DDoS attack. Shield mitigates the attack, ensuring your service remains available. 2.**<u>Macie</u>**: Macie uses machine learning to discover, classify, and protect sensitive data. •Scenario: You store customer information in S3 buckets. Macie scans these buckets, identifies sensitive data like credit card numbers, and helps you secure it. **_<u>Configuration and Monitoring</u>_** 1.**<u>Config</u>**: AWS Config allows you to assess, audit, and evaluate the configurations of your AWS resources. •Scenario: You need to ensure your resources comply with company policies. Config tracks changes and assesses compliance automatically. 2.**<u>GuardDuty</u>**: GuardDuty is an intelligent threat detection service that continuously monitors for malicious activity and unauthorized behavior. •Scenario: GuardDuty detects unusual API calls indicating a potential breach. You investigate and mitigate the threat promptly. **_<u>Vulnerability and Compliance Management</u>_** 1.**<u>Inspector</u>**: Inspector assesses your EC2 instances for vulnerabilities and deviations from best practices. •Scenario: You launch a new EC2 instance. Inspector runs a security assessment and provides a report highlighting potential vulnerabilities for you to address. 2.**<u>Artifact</u>**: Artifact provides on-demand access to AWS’s compliance and security reports. •Scenario: Your company needs proof of AWS compliance for an audit. Artifact supplies the necessary compliance reports. 1.**<u>Cognito</u>**: Cognito helps you add user sign-up, sign-in, and access control to your web and mobile applications. •Scenario: You’re developing a mobile app and need user authentication. Cognito provides a user pool for registration and sign-in functionalities. **_<u>Encryption</u>_** Encryption is the process of converting data into a code to prevent unauthorized access. It is a critical component of data security in the cloud. Scenario: You need to ensure that sensitive customer data stored in an S3 bucket is protected from unauthorized access. By encrypting the data, you can ensure it remains secure even if someone gains unauthorized access to the storage. **<u>Key Management Service (KMS)</u>** KMS is a managed service that allows you to create and manage encryption keys. It simplifies the process of encrypting your data and managing keys securely. Scenario: You have an application that processes sensitive information. You use KMS to generate and store encryption keys, ensuring that your data is encrypted both at rest and in transit. **<u>CloudHSM</u>** CloudHSM is a hardware security module that allows you to generate and use your encryption keys within dedicated hardware. It provides a higher level of security by managing encryption keys in hardware security modules. Scenario: Your organization has strict regulatory requirements for encryption key management. Using CloudHSM, you generate and store encryption keys in a dedicated hardware security module, ensuring compliance with regulatory standards. **_<u>Secrets Management</u>_** Secrets management involves securely storing, managing, and retrieving sensitive information such as passwords, API keys, and other credentials. AWS Secrets Manager helps you do this effectively. Scenario: You have a web application that requires access to a database. Instead of hardcoding the database credentials in your application code, you store them in AWS Secrets Manager. Your application retrieves these credentials securely at runtime, reducing the risk of exposing sensitive information.
warrisoladipup2
1,879,298
Demystifying UX and UI Design in Website Development: Key Differences Explained
In the realm of net website online development, UX (User Experience) and UI (User Interface) layout...
0
2024-06-06T13:38:27
https://dev.to/liong/demystifying-ux-and-ui-design-in-website-development-key-differences-explained-7em
website, development, keydifferences, malaysia
In the realm of net website online development, UX (User Experience) and UI (User Interface) layout are crucial additives that regularly get careworn or used interchangeably. While they're carefully associated and artwork hand-in-hand to create a continuing person interplay, they serve first rate functions and contain distinct strategies. Understanding the difference amongst [UX and UI design is important](https://ithubtechnologies.com/mobile-application-development/?utm_source=dev.to%2F&utm_campaign=UXandUIdesign&utm_id=Offpageseo+2024) for creating powerful, purchaser-pleasant net websites. This data will delve into what UX and UI format entail, how they variety, and why both are critical for a successful internet site. ## **Understanding UX Design** **Definition of UX Design** User Experience (UX) format specializes in the fashionable sense of the person’s interaction with a services or products. It encompasses all factors of the cease-purchaser's interaction with the company, its offerings, and its products. UX layout desires to create answers that deal with the goals and each factors of clients, ensuring that the product is usable, fun, and available. ## **Key Elements of UX Design** **1.User Research** Understanding the target audience through surveys, interviews, and usability testing. This studies enables in creating consumer personas and understanding person desires, behaviors, and motivations. **2.Information Architecture (IA)** Structuring and organizing facts on the net website in a manner that makes it easy for users to locate what they may be looking for. **3.Wire framing and Prototyping** Creating low-constancy wireframes and interactive prototypes to map out the character go with the flow and the layout of the internet website online. **4.Usability Testing** Testing the prototypes with real customers to collect feedback and pick out usability problems. **5.Interaction Design** Designing the manner users engage with the website, together with the layout of person flows, animations, and other interactive elements. ## **Goals of UX Design** The number one intention of UX design is to enhance the person’s typical enjoy when interacting with a services or products. This entails making the internet site intuitive, efficient, and fun to use. Good UX layout allows in: •**Enhancing User Satisfaction** A internet site that is straightforward to navigate and meets person desires can extensively beautify person pleasure. •**Reducing User Frustration** By addressing usability troubles, UX design reduces the possibilities of person frustration and abandonment. •**Increasing Conversion Rates** A nicely-designed person experience can result in higher engagement and conversion fees. ## **Understanding UI Design** **Definition of UI Design** User Interface (UI) layout makes a specialty of the look and experience of the website. It is concerned with the visible elements of the consumer’s interaction with the product. UI layout deals with the layout of displays, buttons, icons, and other visible elements that users engage with. ## **Key Elements of UI Design** **1.Visual Design** Creating the visual factors of the internet site, along with colors, typography, photographs, and universal format. This entails making aesthetically alluring interfaces that align with the logo’s identification. **2.Consistency** Ensuring that the visual elements are constant throughout the website, presenting a cohesive user revel in. **3.Responsiveness** Designing interfaces that work properly on various gadgets and screen sizes. **4.Interactivity** Designing interactive elements which include buttons, forms, and menus to ensure they may be intuitive and engaging. ## **Goals of UI Design** The number one goal of UI layout is to create visually attractive and clean-to-use interfaces. Good UI design allows in: •**Attracting Users** A visually appealing design can appeal to users and make a good first impression. •**Enhancing Usability** By creating intuitive interfaces, UI layout complements the usability of the internet site. •**Supporting Branding** Consistent visual layout factors help in reinforcing the brand’s identity and message. ## **Differences Between UX and UI Design** While UX and UI design are intently related, they serve extraordinary functions and contain specific techniques. Here are the key differences: **1.Focus** UX design is targeted on the overall person revel in, addressing the capability and usefulness of the internet site. UI layout, however, is focused at the visual and interactive elements of the internet site. **2.Process** UX layout involves user studies, information architecture, wire framing, and usefulness testing. UI layout entails visible layout, consistency, responsiveness, and interactivity. **3.Goals** The purpose of UX layout is to create a usable and exciting revel in for customers. The goal of UI design is to create visually appealing and intuitive interfaces. **4.Outcome** UX design effects in a functional and person-pleasant internet site shape. UI design consequences in an aesthetically fascinating and interactive user interface. ## **How UX and UI Design Work Together** Despite their variations, UX and UI layout are complementary and want to work together to create a successful website. Here’s how they intersect: **1.Collaboration** UX designers and UI designers want to collaborate carefully. UX designers awareness on consumer research and create wireframes and prototypes, which UI designers then use to create the visible elements. **2.User-Centric Approach** Both UX and UI layout must be focused around the person. UX layout ensures that the internet site meets consumer desires, even as UI layout guarantees that the interface is intuitive and visually beautiful. **3.Feedback Loop** Continuous comments from customers is vital for both UX and UI design. Usability trying out helps pick out troubles that need to be addressed in each the capability and the visual design of the internet site. ## **Importance of Both UX and UI Design** For a internet site to achieve success, each UX and UI layout are critical. Here’s why: **1.Improved User Satisfaction** Good UX and UI design cause a website that isn't always handiest useful however additionally exciting to apply, ensuing in higher user pride. **2.Increased Engagement** A well-designed person revel in and a visually attractive interface can maintain users engaged and encourage them to explore greater of the website. **3.Higher Conversion Rates** By addressing usability issues and creating a compelling visual layout, UX and UI layout can drastically growth conversion rates. **4.Brand Loyalty** Consistent and person-friendly design helps in building believe and loyalty towards the emblem. ## **Conclusion** In summary, UX and UI layout are both important additives of net development that, although wonderful, ought to paintings in harmony to create a success internet site. UX layout makes a specialty of the overall user experience, addressing usability and capability, even as UI layout specializes in the visible and interactive aspects of the interface. By knowledge and imposing both UX and UI layout principles, companies can create websites that are not best visually appealing however also notably functional and consumer-friendly, leading to advanced consumer pride, higher engagement, and multiplied conversion rates.
liong
1,879,295
Python Essentials for Beginners
I've created a Python notebook that covers the essential fundamentals for anyone to learn...
0
2024-06-06T13:35:39
https://dev.to/tushrv/python-essentials-for-beginners-4edm
python, programming, beginners, tutorial
I've created a Python notebook that covers the essential fundamentals for anyone to learn Python. What You'll Find in the Notebook: 1. Variables & Data Types: Learn how to store and work with different kinds of data in Python. 2. Operators: Understand how to perform calculations, comparisons, and logical operations. 3. Functions: Discover how to write reusable blocks of code that simplify your programs. 4. Control Flow (If-Else, Loops): Control the flow of your program based on conditions and repeat actions. 5. File I/O: Learn how to interact with files, reading and writing data as needed. 6. Functional Tools (Lambda, Map, Filter, Reduce): Explore techniques for working with collections of data. Feel free to check out the notebook and use it as a reference as you learn Python. https://github.com/tushrv/Exercise/blob/main/python_basics.ipynb Additional Topics that can be added: 1. Modules and Packages: Learn how to use external libraries to extend Python's capabilities. 2. Error Handling (Try-Except): Understand how to handle errors that might occur in your code. 3. Regular Expressions: Learn to find and manipulate patterns in text. 4. Virtual Environments: Learn how to manage project dependencies effectively. Please share your feedback. Is it helpful for beginners? Would you like to see more examples or additional topics covered? Your feedback will help me make it even better!
tushrv
1,879,294
O Poder das Tarefas: Como Pequenas Entregas Levam a Grandes Resultados
No mercado de tecnologia, chamamos de task uma tarefa a ser realizada. Ela contém a descrição do...
0
2024-06-06T13:35:01
https://dev.to/kecbm/o-poder-das-tarefas-como-pequenas-entregas-levam-a-grandes-resultados-2of6
productivity, career, discuss, braziliandevs
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/v4y6lp8wc08u1ya234ng.jpeg) No mercado de tecnologia, chamamos de **task uma tarefa a ser realizada**. **Ela contém a descrição do que é para ser desenvolvido e o tempo estimado para a entrega**. Vamos tomar como exemplo o projeto de construção de uma plataforma de streaming de filmes e séries. A primeira task será a seguinte: - **Task**: Tela para cadastro de usuários; - **Descrição**: A tela para cadastro de um novo usuário deve conter um formulário solicitando as seguintes informações: nome, e-mail, senha, data de nascimento e endereço. Após preencher os dados o usuário deverá clicar em um botão para realizar o cadastro na plataforma; - **Tempo para conclusão**: 15 dias. ## Gerenciamento de Tasks ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/psbcvjrdyc28qgfkx1b0.jpeg) Para fazer a gestão das tasks podemos utilizar o **método kanban**, que **é um quadro composto por colunas como: a fazer, em progresso, em testes e concluídos**. Cada task irá iniciar na coluna a fazer, quando alguma pessoa desenvolvedora estiver executando a tarefa ela passará para a coluna em progresso. Após concluir o desenvolvimento da tarefa, ela será enviada para a coluna em testes. Quando os testes forem concluídos, ela será transferida para a coluna concluídos. Nessa última etapa será realizado o deploy da tarefa e ela estará disponível para os usuários no ambiente de produção. Outra metodologia bastante utilizada é a **daily, uma reunião onde o time de tecnologia se reúne para compartilhar o status de desenvolvimento das tarefas**. As pessoas desenvolvedoras falam o que foi feito no dia anterior e o que será realizado no dia atual. Também compartilham eventuais problemas encontrados, e solicitam ajuda de seus pares no time para destravar o andamento da tarefa. ## Importância da Organização ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/4ppx6wlsskzrxhzrx3tp.jpeg) **É importante que cada pessoa desenvolvedora tenha uma tarefa para realizar e que cada tarefa seja alterada no quadro kanban de forma correta**. Assim, o time saberá o que está sendo desenvolvido em cada etapa separadamente. Também é uma boa prática definir a quantidade máxima de tarefas para cada pessoa do time, evitando sobrecarga de trabalho e garantindo que cada desenvolvedor foque em suas entregas adequadamente. ## Conclusão ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/cr8ydnw2mdom6ddtwrj4.jpeg) Nossa plataforma de streaming de filmes e séries terá as seguintes tasks complementares: - Tela de login; - Tela de filmes; - Tela de séries; - Tela de episódios; - Tela de perfil; - Tela de configuração; - Tela de pagamento. Após concluir todas as tarefas, teremos nossa plataforma pronta para utilização. É assim que os serviços digitais que você utiliza são construídos. Passo a passo, de tarefa em tarefa. **Nos bastidores da tecnologia, as grandes entregas são compostas por pequenas partes**. Como se a plataforma fosse um grande quebra cabeça, e as tarefas como peças individuais que fazem parte dele. Nenhum site começa como um foguete. Antes disso ele será um skate, uma bicicleta e uma moto. No mundo digital a evolução é contínua e constante. > Imagens geradas pelo **DALL·E 3**
kecbm
1,879,293
O que eu diria para meu Eu a 2 anos atrás
Resposta Fácil: Compre Cripto. Obrigado a todos, até a próxima! Só brincando (ou não),...
0
2024-06-06T13:34:36
https://dev.to/mateussousa00/o-que-eu-diria-para-meu-eu-a-2-anos-atras-c3e
beginners, tutorial, productivity, learning
## Resposta Fácil: Compre Cripto. Obrigado a todos, até a próxima! Só brincando (ou não), mas deixe-me apresentar... Sou um Desenvolvedor Fullstack, trabalho principalmente com JS/TS, mas já me aventurei com PHP, Java, Kotlin, Go... tudo isso em dois anos. Aprendi muito durante esse tempo, mas a coisa engraçada é que as lições mais valiosas que aprendi estavam mais relacionadas a habilidades interpessoais, comunicação e gestão de pessoas. Estranho, né? Então, você provavelmente veio aqui imaginando que eu iria te passar algum conhecimento sobre o que aprender primeiro, roadmaps ou como conseguir o primeiro emprego. Essas coisas são valiosas, mas são fáceis de encontrar. É por isso que quero te apresentar o primeiro tópico desta discussão: ## Aprenda a Pesquisar Como iniciante, você provavelmente terá muita dificuldade ao pesquisar coisas na internet para te ajudar com as tarefas que está enfrentando agora. Você pode estar se perguntando, "Mas isso é fácil, só preciso usar o ChatGPT e meu problema está resolvido." Você está parcialmente correto, mas se você não souber como pesquisar efetivamente, provavelmente terá problemas em breve. Não quero ser moralista e dizer que você não deve usar, mas se usar, use corretamente. Entenda a questão, a tarefa e a lógica que você precisa para superar a situação. Seja um bom pesquisador, todo bom desenvolvedor é. Porque se você perguntar à IA a solução para o seu problema, ela pode fornecer uma, mas seria a melhor solução? Seria uma solução que não coloca seu projeto em risco de segurança ou desempenho? Pense nisso. Este conselho não é valioso apenas para desenvolvedores. Por exemplo, se você quer um emprego, não basta pesquisar "trabalho remoto"; isso é muito vago. Sempre foque nas suas necessidades. Para mim, como um desenvolvedor Fullstack que conhece bem muitas linguagens, eu faria buscas como: > "Desenvolvedor Fullstack com Spring Kotlin e Vue.js remoto" > "Desenvolvedor Backend com NestJS e GraphQL remoto" Eu poderia fazer muitas variações disso, mas isso é muito melhor do que "trabalho remoto." ## Apareça, Perca a Timidez Lembra do ditado: > Quem não é visto, não é lembrado Isso significa que se não te veem, nunca se lembrarão de você. Difícil, não é? A questão é que você pode ser um dos melhores desenvolvedores do mundo, mas se ninguém sabe quem você é, honestamente? Isso não é valioso. Converse com outros desenvolvedores, recrutadores, POs, PMs. Você não precisa ser direto com "Você tem um emprego?" Compartilhe coisas que possam agregar valor à vida deles, como um post que você leu no LinkedIn ou no dev.to (de mim, claro), ou um vídeo sobre uma nova tendência em TI. Lembro-me quando um amigo meu me apresentou o BUN. Discutimos sobre isso, e foi uma conversa agradável. Eu realmente apreciei. Além disso, lembre-se sempre: seja gentil, seja educado. Crie conexões significativas que você deseja trazer para sua vida. Novas posições de trabalho, empresas e redes sempre aparecerão (desde que as pessoas se lembrem de você). ## Aprenda Sabiamente Isso é complicado, certo? Vou ser direto: o que você quer ser? Um desenvolvedor? Um PO? Entenda o papel que você deseja. Se você ainda não sabe, é hora de aprender o que esses papéis fazem em uma empresa ou em um trabalho. Quando você descobrir o que quer ser, crie um roadmap baseado no que faz um bom desenvolvedor, um bom Product Owner... Lembra daquela coisa que te falei antes? Aprenda a pesquisar. Este é provavelmente o conselho mais valioso que você terá hoje, de novo: Aprenda a pesquisar. Por exemplo, se você quer ser um bom desenvolvedor, não precisa aprender muitas linguagens de uma vez. Domine uma primeiro, depois descubra outras linguagens. ## Dica bônus Aprenda ingles, ou outra lingua. Não se prenda ao português. Te digo isso porque ainda hoje o inglês é uma porta de entrada para voos que voce jamais sonhou na sua vida e carreira. Eu digo isso porque os melhores desenvolvedores que eu conheci são brasileiros, e te digo uma coisa, muito estrangeiro ama brasileiro. Acredito que vou fazer um post sobre isso no futuro, mas por enquanto é isso. ## TL;DR - Compre cripto (nem estou brincando); - Aprenda a pesquisar e use a IA como seu copiloto; - Apareça, perca a timidez, torne-se visível de uma maneira boa; - Aprenda sabiamente, um bom aprendiz sabe quais passos tomar; - Aprenda inglês, agora. Acho que este é um bom começo para um post, certo? Provavelmente escreverei mais focado em um ou dois tópicos mencionados aqui, mas é isso por hoje. Até breve!
mateussousa00
1,879,292
A Guide to ID document recognition: From concept to Future
ID Document Recognition involves the use of technology to verify the authenticity of identification...
0
2024-06-06T13:33:34
https://dev.to/miniailive/a-guide-to-id-document-recognition-from-concept-to-future-4l6a
webdev, androiddev, ai, identity
ID Document Recognition involves the use of technology to verify the authenticity of identification documents. It ensures security and accuracy in identity verification processes. ID Document Recognition is crucial in various sectors, including banking, travel, and online services. It leverages advanced technologies like OCR (Optical Character Recognition) and AI to scan and validate IDs. This process helps prevent fraud, enhances security, and ensures compliance with regulations. Businesses benefit from streamlined verification, reducing manual errors and saving time. Users experience faster and more secure transactions. As digital interactions increase, the demand for reliable ID recognition systems continues to grow. Implementing robust ID recognition technology can significantly improve operational efficiency and customer trust. For more article: https://miniai.live/a-guide-to-id-document-recognition-from-concept-to-future/
miniailive
1,879,291
CSS Outlines
CSS Outlines CSS outlines are lines that are drawn around elements, outside the borders....
0
2024-06-06T13:29:43
https://www.devwares.com/blog/css.outlines/
webdev, css, css3, beginners
## CSS Outlines CSS outlines are lines that are drawn around elements, outside the [borders](https://www.devwares.com/tailwindcss/classes/tailwind-border-width/). Outlines are similar to [borders](https://www.devwares.com/tailwindcss/classes/tailwind-border-radius/), but they differ in a few significant ways: - Outlines do not take up space. - Outlines can be non-rectangular. Outlines are defined by the following properties: ## Outline Style The outline-style property is used to specify the style of the outline. It can take the following values: none, dotted, dashed, solid, double, groove, ridge, inset, outset. ```css p { outline-style: solid;} ``` In this example, the outline style of the p element is set to solid. ## Outline Color The outline-color property is used to specify the color of the outline. ```css p { outline-color: red;} ``` In this example, the outline color of the p element is set to red. ## Outline Width The outline width property is used to specify the width of the outline. The width is specified in either length units (like px, em, etc.) or by using one of the three pre-defined values: thin, medium, or thick. ```css p { outline-width: 2px;} ``` In this example, the outline width of the p element is set to 2 pixels. ## Outline Offset The outline-offset property is used to specify the space between an outline and the edge or border of an element. The offset is specified in length units. ```css p { outline-offset: 15px;} ``` In this example, the outline offset of the p element is set to 15 pixels. ## Shorthand Property: Outline The outline property is a shorthand property for setting outline-width, outline-style, and outline-color in a single declaration. If one of the three properties is not specified, the default value will be used. ```css p { outline: 2px solid red;} ``` In this example, the p element is given a red, solid outline that is 2 pixels wide.
hypercode
1,878,985
4 Free Tailwind CSS Badge Components [Open-Source]
Hello Devs👋 I prepared a list of open-source badge components coded with Tailwind CSS and Material...
27,771
2024-06-06T13:28:50
https://dev.to/creativetim_official/4-free-tailwind-css-badge-components-open-source-589p
tailwindcss, webdev, opensource
Hello Devs👋 I prepared a list of open-source badge components coded with [Tailwind CSS](https://tailwindcss.com/) and [Material Tailwind](https://material-tailwind.com/?ref=devto). Each Tailwind CSS badge example showcased below is easy to integrate and customize. The links to the source code are placed below each example. Simply copy and paste the code directly into your application. Happy coding! ## Badge Component Examples ### 1. Badge with Icon Try this badge that comes with an icon and is perfect for notifications/status indicators that need extra visual emphasis. ![badge with icon](https://i.imgur.com/aFKHWfA.png) Get the source code for this [badge with icon example](https://www.material-tailwind.com/docs/html/badge#badge-custome-style?ref=devto)! ### 2. Badge with Different Colors Use this example to easily differentiate between multiple statuses/ categories. Customized colors make the UI more intuitive. ![badge with colors](https://i.imgur.com/iPKfjcn.png) Get the source code for this [badge with different colors example](https://www.material-tailwind.com/docs/html/badge#badge-color?ref=devto)! ### 3. Badge with Different Placements Check out this example to see how you can place the badge in different positions relative to their parent element. ![badge with placements](https://i.imgur.com/rQfPph1.png) Get the source code for this [badge with different placements example](https://www.material-tailwind.com/docs/html/badge#badge-placement?ref=devto)! ### 4. Badge Overlap Check out this Tailwind CSS component example to see how badges can overlap with other elements. ![badge overlap](https://i.imgur.com/RrLUKQ9.png) Get the source code for this [badge overlap example](https://www.material-tailwind.com/docs/html/badge#badge-overlap?ref=devto)! 🚀 Looking for even more examples? Check out our open-source **[Tailwind CSS components library](https://www.material-tailwind.com/?ref=devto)** - Material Tailwind - and browse through 500+ components and website sections. 🤖 Or you can also generate customized blocks easily using the power of AI. Try now for free [Magic AI Blocks](https://www.material-tailwind.com/magic-ai)!
creativetim_official
1,879,147
Core Architectural Components of Azure
Azure architectural components are the building blocks of Microsoft Azure that developers,...
0
2024-06-06T13:28:31
https://dev.to/tracyee_/architectural-components-of-azure-230k
microsoftcloud, cloudcomputing, azure
![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/izndwibavt7rmspde0eq.jpg) Azure architectural components are the building blocks of Microsoft Azure that developers, architects, and organizations can use to design, implement, and oversee secure, scalable, and efficient cloud-based systems. These elements can be deployed to create strong, scalable, and secure architectures. **Regions** Azure regions are geographical locations around the globe where Microsoft has data centers. Each region comprises multiple data centers to provide redundancy and failover capabilities. This global network allows businesses to deploy applications closer to their users, reducing latency and improving performance. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/gtzydt43vn6bfiljlkph.jpeg) **Availability Zones** Azure has Availability Zones within regions, which are physically separate data centers with independent power, cooling, and networking. They are designed to protect applications and data from data center failures. By replicating applications across multiple Availability Zones, businesses can achieve high availability and resilience. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/z3fmjm9cfr2622ky8nep.png) Azure operates data centers globally, strategically located in different regions around the world. These data centers house the physical servers, storage devices, networking equipment, and other infrastructure required to run Azure services. **Resource Groups** Resource Groups are logical containers that hold related resources for an Azure solution. These resources can include virtual machines, storage accounts, databases, and more. Organizing resources into groups simplifies management, monitoring, and access control, enabling efficient administration of related resources. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/5qus265wxjwtrjwl89i1.png) Key Points ● Resources within a group share the same lifecycle and management ● Simplifies management and deployment ● Can group resources by application, environment, or department Benefits ● Easier to manage costs ● Simplified resource management and organization **Azure Resource Manager (ARM)** ARM is the management layer that enables users to deploy, manage, and monitor Azure resources. It provides a unified API and control plane for interacting with Azure services and allows for the declarative definition of resource configurations using Azure Resource Manager templates.Provides a unified way to manage Azure resources ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/s72q4ini0va12nymulxu.png) ● Allows users to create, update, and delete resources as a group ● Uses templates to automate deployment Features ● Role-based access control (RBAC) ● Tagging for resource organization ● Audit logs for tracking changes Benefits ● Consistent management layer ● Facilitates automation and orchestration These core architectural components form the foundation of Azure's cloud infrastructure and enable users to build, deploy, and manage a wide range of applications and services in the cloud.
tracyee_
1,879,290
Building an Intelligent Reimbursement Tracking App using OCR with Gemini API + ToolJet 🚀
Introduction This tutorial will guide you through building an intelligent reimbursement...
0
2024-06-06T13:25:06
https://blog.tooljet.com/building-an-intelligent-reimbursement-tracking-app-using-ocr-with-tooljet-gemini-api/
gemini, ai, lowcode, tooljet
## Introduction This tutorial will guide you through building an intelligent reimbursement tracking app with OCR using [ToolJet](https://github.com/ToolJet/ToolJet) and the Gemini API. The app will allow users to upload images of receipts, extract text from the images using OCR, and store the extracted information in a database. We'll also add an AWS S3 integration to store the receipt images. ------------------------------------------------------------- ## Prerequisites: - **ToolJet** (https://github.com/ToolJet/ToolJet) : An open-source, low-code business application builder. [Sign up](https://www.tooljet.com/signup) for a free ToolJet cloud account or [run ToolJet on your local machine](https://docs.tooljet.com/docs/setup/try-tooljet/) using Docker. - **Gemini API Key** : Log into [Google AI Studio](https://aistudio.google.com/app/apikey) using your existing Google credentials. Within the AI Studio interface, you'll be able to locate and copy your API key. Here is a quick preview of our final application: ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/qim5qd042q11qq1pxtx3.png) ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/98cdkxof9nkg2opompzb.png) ------------------------------------------------------------- ## Building our UI - Login to your [ToolJet account](https://app.tooljet.com/). Navigate to ToolJet dashboard and click on the **Create new app** button on the top left corner. ToolJet comes with 45+ built-in components. This will let us set up our UI in no time. - Drag and drop the **Container** component onto the canvas from the component library on the right side. Adjust the height and width of the **Container** component appropriately. - Similarly, drag-and-drop the **Icon** and two **Text** components inside your container. We'll use these two **Text** components for our header and instructional text. - Select the **Icon** component, navigate to its properties panel on the right and select the _ZoomMoney_ icon under its **Icon** property. - Change the font size and content of the **Text** component appropriately. - Drag and drop the **File Picker** and the **Button** component inside your container. We'll use the **File Picker** component to allow users to upload images of their receipts. The **Button** component will be used to trigger the **OCR** process. - Rename the **File Picker** component to _fileUploader_. - Adjust the width of the **File Picker** component according to your preference. - Change the colour and text of the **Button** component according to your preference. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/slg0w97ly9httwd5py1r.png) We have implemented the user interface for uploading receipts. The next step is to create the UI for administrators to approve or reject expense submissions. - Click on the **Pages** icon on the left side of the screen. On the header of the Pages Panel, click on the **+** button to create a new page. - Drag and drop the **Container** component onto the canvas. Adjust the height and width of the **Container** component appropriately. - Drag and drop the **Icon** and a **Text** component inside your container. We'll use these two components for our logo and header text. - Drag and drop the **Table** component inside the container. We'll use the **Table** component to display the list of expense submissions. We'll later also add **Action** Buttons to approve, reject, and view the receipt image for each submission. - Drag and drop the **Modal** component inside the container. Open the **Modal** component and drag and drop the **HTML** component inside the Modal. We'll use the **HTML** component to display the receipt image. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/bj5z6mg5jmeegfutpkgi.png) ------------------------------------------------------------- ## Creating Queries **ToolJet** allows connecting to third-party APIs using its REST API query feature. We'll use this to connect to the **Gemini** API to extract the text from the uploaded receipt images. ToolJet comes with built-in integration with **AWS S3**, we'll use this to store the receipt images. - Using ToolJet's [Workspace Constants](https://docs.tooljet.com/docs/org-management/workspaces/workspace_constants/) feature, create a new constant named **GEMINI_API_KEY** with your Gemini API key. - In the query panel, click the **+ Add** button and choose the **REST API** option. - Rename the query to _extractTextFromImage_. In the Request parameter, choose **POST** as the Method from the drop-down and paste the following URL. ``` https://generativelanguage.googleapis.com/v1beta/models/gemini-1.5-pro:generateContent?key={{constants.GEMINI_API_KEY}} ``` - Navigate to the Body section of the extractTextFromImage. Toggle on **Raw JSON** and enter the following code: ``` { "contents": [ { "parts": [ { "text": "In this image of a receipt, analyze the receipt image and return the following information in JSON format without any formatting or syntax highlighting: total_amount, date." }, { "inline_data": { "mime_type":"image/jpeg", "data": "{{components.fileUploader.file[0].base64Data}}" } } ] } ] } ``` - Next, we'll create a query to save extracted text to the ToolJet database. - Click on the **ToolJet** logo on the top left corner and select the Database option. - Click on the **Create new table** button and name the table reimbursement_requests. Add the following columns to the table: _id_, _name_, _email_, _total_amount_, _status_ and _receipt_date_. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/56abdgwm05sti36sct6d.png) - Navigate back to the Query panel and click on the **+ Add** button. Choose the **ToolJet Database** option. - Rename the query to _addReceiptData_. - Select the _reimbursement_requests_ table name from the drop-down. - In the Operation drop-down, choose **Create row** and enter the following data for the columns. | Column Name | Key | | --- | --- | | email | `{{globals.currentUser.email}}` | | name | `{{globals.currentUser.name}}` | | total_amount | `{{JSON.parse(queries.extractTextFromImage.data.candidates[0].content.parts[0].text).total_amount}}` | | receipt_date | `{{JSON.parse(queries.extractTextFromImage.data.candidates[0].content.parts[0].text).date}}` | - Next, we'll create a query to store the receipt image in the AWS S3 bucket. - Create a new data source to connect to the AWS S3 using ToolJet's built-in [AWS S3 integration](https://docs.tooljet.com/docs/data-sources/s3/). - Click on the **+ Add** button in the Query panel and choose the newly created AWS S3 data source. - Rename the query to _addToS3_ and select the operation as **Upload object**. - Add the following data for the columns: | Column Name | Key | | --- | --- | | Bucket | bucket name (should already exist) | | Key | `{{"reimbursement_id" + "_" + queries.addReceiptData.data[0].id}}` | | Content Type | `{{components.fileUploader.file[0].type}}` | | Upload Data | `{{JSON.parse(queries.extractTextFromImage.data.candidates[0].content.parts[0].text).date}}` | | Encoding | base64 | Next, we'll create the query to fetch the list of expense submissions from the ToolJet database. - Click on the **+ Add** button in the Query panel and choose the ToolJet Database option and rename the query to _getReimbursementRequests_. - Select the _reimbursement_requests_ table from the drop-down. - In the Operation drop-down, choose **List rows**. - To ensure that the query runs every time the application loads, enable the **Run this query on application load?** toggle. - Next, create two more ToolJet database queries to approve and reject the expense submissions, named _approveRequest_ and _rejectRequest_. - For both of these queries, select the _reimbursement_requests_ table and choose the **Update row** operation and to use the filter field to match the id of the row to be updated using the `{{components.reimbursementRequestsTable.selectedRow.id}}` variable. - In the columns field, update the Status column to approved for the _approveRequest_ query and rejected for the _rejectRequest_ query. Let's add our last query to fetch the receipt image from the AWS S3 bucket. - Click on the **+ Add** button in the Query panel and choose the AWS S3 data source and rename the query to _getReceiptImage_ and enter the following data. | Column Name | Key | | --- | --- | | Operation | Signed url for download | | Bucket | bucket name | | Key | `{{"reimbursement_id" + "_" + components.table1.selectedRow.id}}` | | Expiries in | 3600 | ------------------------------------------------------------- ## Binding Queries to the UI Components Now that we have successfully built our UI and queries, the next step is to integrate them. - Select the **Button** component and navigate to the properties panel on the right. Click on the **+ New event handler** button. Change the **Action** to **Run query** and select the _extractTextFromImage_ query. - Next, navigate to the _extractTextFromImage_ query and click on the **+ New event handler** button. Change the **Action** to **Run query** and select the _addReceiptData_ query. - Navigate to the _addReceiptData_ query and click on the **+ New event handler** button. Change the **Action** to **Run query** and select the _addToS3_ query. - Our upload receipts feature is now complete. You can test this out by uploading a receipt image and verify the extracted data in your ToolJet database. Next, we'll implement the admin approval feature. - Navigate to the Admin page and select the **Table** component. In the properties panel on the right, enter `{{queries.getReimbursementRequests.data}}` in the Data field. - Click on the **+ New action button** in the properties panel and create three new actions buttons: **Approve**, **Reject**, and **View Receipt**. Bind the _approveRequest_ and _rejectRequest_ to the respective action buttons using Event Handlers. - Change the background colour and text of the action buttons according to your preference. - Click on the **View Receipt** action button and Add a new event handler. Change the Action to Open Modal and select the _displayReceiptImage_ modal. - Navigate to the _displayReceiptImage_ modal and in the properties panel on the right, uncheck the Use **default trigger button** toggle. - Inside the modal, click on the **HTML** component and enter `<img src={{queries.getReceiptFromS3.data.url}}>` in the Raw HTML field. - Our admin approval feature is now complete. You can test this out by uploading a receipt image and verifying the extracted data in the Table component. You can click on the **Approve** or **Reject** buttons to approve or reject the expense submission. You can also view the receipt image by clicking on the **View Receipt** button. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7chbcr4tutudc0iie5rs.png) ------------------------------------------------------------- ## Conclusion Congratulations! You've successfully built a powerful reimbursement tracking app with OCR capabilities using ToolJet and the Gemini API. You can now track and manage expense submissions with ease. Feel free to customize the app further by adding more features and functionalities. To learn and explore more about ToolJet, check out the [ToolJet docs](https://docs.tooljet.com/docs/) or connect with us and post your queries on [Slack](https://join.slack.com/t/tooljet/shared_invite/zt-2ij7t3rzo-qV7WTUTyDVQkwVxTlpxQqw).
amanregu
1,879,289
RockLane - Interview Questions
Q1. Tell me about yourself Q2. A challenging task that you faced at work Q3. Predict the...
0
2024-06-06T13:22:58
https://dev.to/alamfatima1999/rocklane-interview-questions-2bof
Q1. Tell me about yourself Q2. A challenging task that you faced at work Q3. Predict the output ```JS console.log("Start"); setTimeout(() => { console.log("Timeout 1"); }, 0); Promise.resolve() .then(() => { console.log("Promise 1"); }) .then(() => { console.log("Promise 2"); }); setTimeout(() => { console.log("Timeout 2"); }, 0); console.log("End"); //Start //End //Promise 1 //Promise 2 //Timeout 1 //Timeout 2 ``` Q4. Flatten this array ```JS const flattenArray = (arr) => { return arr.reduce((acc, val) => { if (Array.isArray(val)) { acc.concat(flattenArray(val)); } else { acc.concat(val, []); } }); }; const arr = [1, 2, [3, 4], 5, [[[6, 7], 8, [[[[9]]]]]]]; const flatten = (arr) => { let flattenedArr = flattenArray(arr); console.log(flattenedArr); }; ``` Q5. Difference between useMemo() and useCallback() Q6. Why do we use keys in react? Q7. Server side Rendering V/S Client Side Rendering. Q8. How to center a display flex? Q9. What is the difference between absolute and relative positioning? Q10. Do you use version control. If yes what all commands you know. Q11. Do you know rebase?
alamfatima1999
1,879,288
Some Code Tricks Every Web Developer Should Know
Contenteditable Attribute This attribute allows you to make an element editable by the...
0
2024-06-06T13:22:50
https://dev.to/shyam1806/some-code-tricks-every-web-developer-should-know-303p
webdev, frontend, html
## Contenteditable Attribute This attribute allows you to make an element editable by the user like a text input. `<div contenteditable="true"> Hello User. </div>` ## Placeholder Color You can use the ::placeholder psuedo-element to style the placeholder text in an input field allowing you to customize the look `input::placeholder{ color:"#fff; }`
shyam1806
1,879,285
Apple Gummies Tyson 2.0 HeavyWeight 7000 Disposables
Indulge in the irresistible combination of crisp apple flavor and chewy gummy goodness with Apple...
0
2024-06-06T13:20:15
https://dev.to/vape_marley_f3271922b1d8f/apple-gummies-tyson-20-heavyweight-7000-disposables-3kfk
apple, gummie, tyson, disposables
Indulge in the irresistible combination of crisp apple flavor and chewy gummy goodness with Apple Gummies - Tyson 2.0 HeavyWeight 7000 Disposables! These innovative disposable vape devices are designed to deliver a burst of fruity delight with every puff, providing vapers with a convenient and satisfying vaping experience. Whether you're a dedicated vaper or new to the scene, Apple Gummies - Tyson 2.0 promises to elevate your vaping journey to new heights. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/vxnum39h1s4dx2brageb.jpg) **Bursting with Flavor ** Apple Gummies - Tyson 2.0 tantalizes your taste buds with the sweet and tangy taste of ripe apples, perfectly complemented by the chewy sweetness of gummy candy. With each inhale, you'll experience the crisp freshness of apples, followed by the satisfying chewiness of gummy candy on the exhale. It's a flavor sensation that's sure to leave you craving more. **Long-lasting Performance ** Tyson 2.0 HeavyWeight 7000 Disposables offer an impressive 7000 puffs of pure vaping pleasure, ensuring extended enjoyment without the hassle of frequent refills or charging. Its high-capacity battery and premium e-liquid formulation deliver a smooth and consistent draw with every puff, allowing you to savor the delicious flavors of Apple Gummies for longer. **Convenient and Portable ** Whether you're on the go or relaxing at home, Apple Gummies - Tyson 2.0 is the perfect companion for all your vaping adventures. Its sleek and compact design fits comfortably in your pocket or purse, making it ideal for travel or outdoor activities. **Quality You Can Trust ** At Tyson HeavyWeight, we are committed to delivering the highest quality vaping products to our customers. Each Apple Gummies - Tyson 2.0 disposable vape device undergoes rigorous testing and quality control measures to ensure a premium vaping experience that exceeds expectations. With Apple Gummies - Tyson 2.0, you can vape with confidence, knowing you're getting the best of the best. **Conclusion ** Treat yourself to the sweet sensation of Apple Gummies - Tyson 2.0 HeavyWeight 7000 Disposables. With its irresistible blend of apple and gummy candy flavors, long-lasting performance, and unmatched convenience, this disposable vape device is sure to become your new go-to choice. Whether you're craving a burst of fruity sweetness or simply seeking a hassle-free vaping solution, Apple Gummies - Tyson 2.0 invites you to experience the ultimate vaping pleasure. [https://vapemarley.com/shop/disposable-vapes/tyson/mike-tyson-7000/apple-gummies-tyson-2-0-heavyweight-7000-disposables/]
vape_marley_f3271922b1d8f
1,879,283
Troubleshooting External Hard Drives on Linux
External hard drives are essential for many users, providing extra storage, backup capabilities, and...
0
2024-06-06T13:26:28
https://geeksta.net/geeklog/troubleshooting-external-hard-drives-on-linux/
guide, linux, hardware, troubleshooting
--- title: Troubleshooting External Hard Drives on Linux published: true date: 2024-06-06 13:18:59 UTC tags: guide, linux, hardware, troubleshooting cover_image: https://geeksta.net//img/geeklog/external-hard-drive.webp canonical_url: https://geeksta.net/geeklog/troubleshooting-external-hard-drives-on-linux/ --- External hard drives are essential for many users, providing extra storage, backup capabilities, and portability. However, encountering issues where the drive is no longer recognized by your Linux-based operating system can be frustrating. I recently faced this issue and compiled the information I researched into this guide. I hope it helps you troubleshoot and resolve common problems to regain access to your data. ## Step 1: Check Physical Connections Before diving into software troubleshooting, ensure that all physical connections are secure: 1. Unplug the hard drive and plug it back in securely. 2. Use a different USB port on your computer. 3. If possible, use a different USB cable. 4. Connect the hard drive to another computer to see if it is recognized. ## Step 2: Check Power Supply 1. If the hard drive has an external power supply, ensure it is properly connected and working. 2. Make sure the USB port provides enough power, especially for larger drives. Using a powered USB hub might help. ## Step 3: Check System Messages After reconnecting the drive, open a terminal and check the `dmesg` output for any relevant messages: ``` sudo dmesg | grep -i usb ``` Look for error messages like `device descriptor read error` or `unable to enumerate USB device`, which indicate problems with the USB connection. ## Step 4: List USB Devices Use `lsusb` to list all USB devices connected to your system and check if your external hard drive appears in the list. If it does, it means the drive is recognized at some level but may still have issues. ## Step 5: Disable USB Autosuspend Sometimes, USB autosuspend can cause issues. Disable it by editing the GRUB configuration: Open and edit the GRUB configuration file: ``` sudo vim /etc/default/grub ``` Add `usbcore.autosuspend=-1` to the `GRUB_CMDLINE_LINUX_DEFAULT` line. It should look like this: ``` GRUB_CMDLINE_LINUX_DEFAULT="quiet splash usbcore.autosuspend=-1" ``` Update GRUB and reboot: ``` sudo update-grub sudo reboot ``` Then check the `autosuspend` value, it should be `-1`: ``` cat /sys/module/usbcore/parameters/autosuspend ``` If this doesn't help, I suggest undoing the changes. ## Step 6: Use a Live USB Create a live USB stick with a different Linux distribution and boot from it: 1. Use a tool like [Rufus](https://rufus.ie/) or [UNetbootin](https://unetbootin.github.io/) to create a live USB stick. 2. Boot your computer from the live USB stick. 3. After booting, connect your external hard drive and see if it is recognized. ## Step 7: Check Disk Health If the drive is making unusual noises, it might indicate hardware failure. In this case, stop using the drive immediately to prevent further damage. If the data is critical, consider professional data recovery services. ## Step 8: Attempt Data Recovery If the drive is recognized but you can't access the data, use tools like TestDisk and PhotoRec: Install TestDisk and PhotoRec: ``` sudo apt-get install testdisk ``` Run TestDisk: ``` sudo testdisk ``` Follow the prompts to analyze and recover partitions or files. ## Opening the Case If none of the above steps helped and the warranty on your hard drive is still valid, contact the seller or manufacturer for assistance. If the warranty has expired and you decide to open the hard drive case, here are some tips: ### What to Look Out For: 1. **Tamper-Evident Seal** : You may notice a tamper-evident seal on the screws. These seals are typically made of materials like paper, plastic, vinyl, or foil. They are designed to show if the drive has been opened. 2. **Physical Damage** : Look for visible signs of physical damage such as burned components, disconnected parts, or corrosion. 3. **Connections and Cables** : Ensure that all internal connections and cables are intact and securely connected. 4. **PCB Inspection** : Examine the printed circuit board (PCB) for any signs of damage or burnt areas. 5. **Heads and Platters** : Avoid touching the platters or the read/write heads, as they are extremely sensitive and can be damaged easily. ### Handling and Safety Tips: 1. Handle these materials minimally and wash your hands afterward. 2. Avoid ingesting any part of the seal. Seek medical advice if accidentally ingested. 3. Avoid inhaling any dust or particles if the seal is damaged. 4. If you have sensitive skin, wear gloves when handling to avoid potential irritation. ## Conclusion By following these steps, you should be able to diagnose and potentially resolve issues with your external hard drive on Linux. If the drive continues to malfunction, especially if it makes unusual noises, consider consulting professional data recovery services to avoid permanent data loss. Regular backups and careful handling of external drives can prevent many common issues. Keep your data safe and ensure your drives are functioning correctly to avoid any unnecessary headaches in the future. --- Thank you for reading! This article was written by Ramiro Gómez using open source software and the assistance of AI tools. While I strive to ensure accurate information, please verify any details independently before taking action. For more articles, visit the [Geeklog on geeksta.net](https://geeksta.net/geeklog/).
geeksta
1,879,282
Adani One Super App: System Design Unlocked
Adani One Super App The digital age demands convenience and efficiency, and super apps are becoming...
0
2024-06-06T13:15:21
https://dev.to/nashetking/adani-one-super-app-system-design-unlocked-4mel
restapi, api, systemdesign, webdev
[Adani One Super App](https://g.co/kgs/TBFNgE3) The digital age demands convenience and efficiency, and super apps are becoming the cornerstone of this transformation. Adani One is envisioned to be a super app that integrates multiple services, from e-commerce and travel bookings to utilities and customer support, into a single platform. In this blog, we'll unlock the system design of the Adani One super app, focusing on architecture, scalability, and security. ## Understanding Super Apps A super app is a platform that offers a wide range of services under one roof. Instead of switching between different apps for various needs, users can access everything from payments and travel bookings to customer support and social interactions in one place. ## System Design Overview Designing a super app involves multiple layers of complexity, including user management, service integration, real-time notifications, and security. Let’s dive into the details. ### Architecture The architecture of the Adani One super app is based on a microservices approach, ensuring modularity, scalability, and maintainability. **Microservices Architecture:** - **Authentication Service:** Handles user registration, login, and token management. - **Payment Service:** Manages transactions, payment gateways, and wallet functionalities. - **Service Discovery Service:** Provides listings for various services like flights, hotels, etc. - **Booking Service:** Manages reservations and bookings. - **Notification Service:** Sends real-time notifications. - **Search Service:** Handles user search queries. - **Customer Support Service:** Manages chat and support interactions. - **User Profile Service:** Manages user data and preferences. - **Review and Rating Service:** Handles user reviews and ratings. **API Gateway:** - Serves as a single entry point for all client requests, routing them to the appropriate microservices. It also provides functionalities like rate limiting, caching, and logging. **Database Layer:** - **Relational Databases:** For transactional data. - **NoSQL Databases:** For flexible data storage. - **In-Memory Databases:** For caching and session management. **Messaging and Event Streaming:** - **Message Broker:** For asynchronous communication between microservices. - **Event Streaming:** For real-time data processing. **Data Analytics and Reporting:** - **Data Warehouse:** For storing and querying large datasets. - **ETL Pipeline:** For data extraction, transformation, and loading. - **Analytics Tools:** For generating reports and dashboards. ### High-Level Architecture Diagram ![Adani One Super App Architecture](https://example.com/architecture-diagram.png) ## Scalability Scalability is crucial for handling millions of users and ensuring smooth performance. Here’s how we achieve it: **Horizontal Scaling:** - Deploy each microservice independently, allowing specific components to scale based on demand. - Use Kubernetes to manage containerized microservices, enabling automatic scaling. **Load Balancing:** - Implement load balancing at the API gateway and service levels to distribute traffic evenly. **Auto-scaling:** - Use Kubernetes Horizontal Pod Autoscaler (HPA) and cloud provider auto-scaling features to adjust resources based on demand. **Caching:** - Use in-memory databases like Redis for caching frequently accessed data. - Employ a CDN for caching static assets closer to users. **Event-Driven Architecture:** - Use message brokers like RabbitMQ for decoupling services and handling asynchronous communication. **Database Replication:** - Implement master-slave replication and multi-region deployment for high availability and disaster recovery. ### Detailed Scalability Calculations **Example Scenario: Handling Peak Traffic** Assume the following: - Average user makes 5 requests per session. - Peak traffic: 1 million users per hour. **Calculations:** - Total requests per hour: \(1,000,000 \text{ users/hour} \times 5 \text{ requests/user} = 5,000,000 \text{ requests/hour}\) - Requests per second (RPS): \(\frac{5,000,000}{3600} \approx 1389 \text{ RPS}\) To handle this load: - Deploy API Gateway instances capable of handling 500 RPS each: \( \frac{1389}{500} \approx 3 \text{ instances} \) - Scale microservices similarly based on their respective load profiles. **Kubernetes Configuration for Auto-Scaling:** Here's a sample configuration for setting up Horizontal Pod Autoscaling in Kubernetes: ```yaml apiVersion: autoscaling/v1 kind: HorizontalPodAutoscaler metadata: name: my-microservice-hpa namespace: my-namespace spec: scaleTargetRef: apiVersion: apps/v1 kind: Deployment name: my-microservice minReplicas: 2 maxReplicas: 10 targetCPUUtilizationPercentage: 80 ``` This configuration ensures that the deployment named `my-microservice` scales between 2 and 10 replicas based on CPU utilization. ## Security Security is paramount for protecting user data and maintaining trust. Here’s how we ensure robust security: **Authentication and Authorization:** - Use OAuth 2.0 and OpenID Connect for secure authentication. - Implement JWT for secure, stateless token management. **Data Encryption:** - Encrypt data in transit using TLS/SSL. - Encrypt data at rest in databases and storage. **Access Control:** - Implement RBAC to manage permissions based on user roles. - Use ABAC for fine-grained access control. **API Security:** - Enforce rate limiting, IP whitelisting/blacklisting, and request validation at the API gateway. - Validate and sanitize inputs to prevent injection attacks. **Monitoring and Logging:** - Maintain comprehensive audit logs for critical operations. - Use SIEM tools for security monitoring and threat detection. **Compliance:** - Ensure compliance with GDPR, CCPA, and other data protection regulations. **Incident Response:** - Develop an incident response plan for quick mitigation of security incidents. - Implement regular backups and disaster recovery plans. ### Code Snippets for Security **JWT Authentication Middleware in Node.js:** ```javascript const jwt = require('jsonwebtoken'); function authenticateToken(req, res, next) { const token = req.header('Authorization').split(' ')[1]; if (!token) return res.sendStatus(401); jwt.verify(token, process.env.ACCESS_TOKEN_SECRET, (err, user) => { if (err) return res.sendStatus(403); req.user = user; next(); }); } module.exports = authenticateToken; ``` **Encryption in Transit (TLS/SSL) Configuration for Nginx:** ```nginx server { listen 443 ssl; server_name example.com; ssl_certificate /etc/nginx/ssl/nginx.crt; ssl_certificate_key /etc/nginx/ssl/nginx.key; ssl_protocols TLSv1.2 TLSv1.3; ssl_ciphers HIGH:!aNULL:!MD5; location / { proxy_pass http://localhost:3000; proxy_set_header Host $host; proxy_set_header X-Real-IP $remote_addr; proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; proxy_set_header X-Forwarded-Proto $scheme; } } ``` ## Conclusion The Adani One super app is designed to be a robust, scalable, and secure platform, offering a seamless experience to users while integrating a multitude of services. By leveraging a microservices architecture, horizontal scaling, and stringent security measures, the app is well-equipped to handle high traffic and protect user data. Building a super app is a complex but rewarding endeavor, requiring meticulous planning and execution. With the right design and architecture, Adani One is poised to become a cornerstone of digital convenience. Feel free to share your thoughts and feedback in the comments. Let's discuss and unlock the potential of super apps together! --- This enhanced blog post includes more details, code snippets, and calculations to provide a comprehensive guide to designing the Adani One super app.
nashetking
1,879,280
AWS Certified Cloud Practitioner Study Guide - Exam Guide Outline
Introduction: Becoming an AWS Certified Cloud Practitioner is an essential step for professionals...
0
2024-06-06T13:14:08
https://dev.to/vollnsa/aws-certified-cloud-practitioner-study-guide-exam-guide-outline-c31
aws
**Introduction:** Becoming an AWS Certified Cloud Practitioner is an essential step for professionals looking to establish their expertise in cloud computing with Amazon Web Services (AWS). This study guide aims to provide a comprehensive outline to help you prepare effectively for the AWS Certified Cloud Practitioner exam. **Exam Overview:** The AWS Certified Cloud Practitioner exam evaluates candidates' understanding of AWS Cloud concepts, AWS services, security, architecture, pricing, and support. It is designed for individuals with no prior AWS experience and serves as a foundational credential for more advanced AWS certifications. **Exam Guide Outline:** **Cloud Concepts:** Understanding the AWS Cloud and its global infrastructure. Key advantages of cloud computing. AWS Cloud deployment models (e.g., public, private, hybrid). AWS Cloud service models (e.g., IaaS, PaaS, SaaS). **AWS Core Services:** - Compute Services: EC2, ECS, Lambda. - Storage Services: S3, EBS, Glacier. - Database Services: RDS, DynamoDB. - Networking Services: VPC, Route 53. **Security:** - Shared Responsibility Model. - Identity and Access Management (IAM). - Encryption methods and AWS Key Management Service (KMS). - Compliance and Data Protection. **Architectural Principles:** - Best practices for designing resilient and scalable architectures. - AWS Well-Architected Framework. - High Availability and Fault Tolerance. **Pricing and Billing:** - AWS pricing models (e.g., On-Demand, Reserved, Spot Instances). - Cost optimization strategies. **AWS Pricing Calculator.Support Plans:** - AWS Support tiers and benefits. - AWS Trusted Advisor. - AWS Personal Health Dashboard. **Study Resources:** AWS Certified Cloud Practitioner Exam Guide: [Link](https://aws.amazon.com/certification/certified-cloud-practitioner/) AWS Documentation: [Link](https://docs.aws.amazon.com/) AWS Training and Certification: [Link](https://www.aws.training/) Practice Exams: [Link](https://www.dumpsedu.com/CLF-C02-exam-questions) Official AWS Whitepapers: [Link](https://aws.amazon.com/whitepapers/) **Conclusion:** Preparing for the AWS Certified Cloud Practitioner exam requires a thorough understanding of AWS Cloud concepts, services, security, architecture, pricing, and support. Utilizing the outlined topics and recommended study resources will enhance your preparation and increase your chances of passing the exam successfully. Remember, continuous practice and hands-on experience with AWS services are key to mastering the material and achieving certification. Good luck on your AWS Certified Cloud Practitioner journey! [Disclaimer: The sources provided are accurate as of the time of writing. Be sure to verify the latest information on the official AWS website and documentation.]
vollnsa
1,879,333
Easily Handle OLAP Cube Data using Vue Pivot Table
TL;DR: Learn to bind and process OLAP cube data using Syncfusion Vue Pivot Table. This blog guides...
0
2024-06-14T03:49:27
https://www.syncfusion.com/blogs/post/olap-cube-data-using-vue-pivot-table
vue, development, olapserver, web
--- title: Easily Handle OLAP Cube Data using Vue Pivot Table published: true date: 2024-06-06 13:13:26 UTC tags: vue, development, olapserver, web canonical_url: https://www.syncfusion.com/blogs/post/olap-cube-data-using-vue-pivot-table cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/n046tewvqh8kzylp5p5c.png --- **TL;DR:** Learn to bind and process OLAP cube data using Syncfusion Vue Pivot Table. This blog guides you through ensuring IIS and Analysis Services are installed and configured, creating an HTTP endpoint using IIS, setting up an application pool and virtual directory, configuring authentication, and adding a script map for msmdpump.dll. Finally, it shows you how to connect the OLAP cube to the Syncfusion Vue Pivot Table in your Vue app for intuitive data analysis and presentation. An [OLAP](https://en.wikipedia.org/wiki/Online_analytical_processing "Wikipedia Link: Online analytical processing") cube includes dimensions, hierarchies, levels, measures, and named sets. It serves as a powerful tool for analyzing multidimensional data. Leveraging OLAP data with the [Syncfusion Vue Pivot Table](https://www.syncfusion.com/vue-components/vue-pivot-table/olap "Vue Pivot Table") facilitates an intuitive presentation and exploration in tabular and graphical (also known as chart) formats. Additionally, reports can be dynamically customized using features such as the grouping bar and field list, and there is also the option to save reports for future use. To connect multidimensional OLAP data with the Syncfusion Vue Pivot Table, an HTTP endpoint to access an Analysis Services instance is essential. This article will walk you through creating this HTTP endpoint using [Internet Information Services](https://en.wikipedia.org/wiki/Internet_Information_Services "Wikipedia Link: Internet Information Services") (IIS) on a Windows operating system. Let’s get started! ## Prerequisites Before you enable HTTP access to the OLAP server, ensure that a web server is running to host the web app that will access the OLAP server and that IIS is configured properly. 1.Click on **Start** in your system and select **Turn Windows features on or off**.[![Search for “Turn Windows features on or off”](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Search-for-Turn-Windows-features-on-or-off.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Search-for-Turn-Windows-features-on-or-off.png) 2.Go to **Internet Information Services**, expand it, and then further expand **World Wide Web Services** and **Application Development Features**. Verify that both **CGI** and **ISAPI Extensions** are selected.[![IIS settings expanded to verify CGI and ISAPI Extensions are selected](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/IIS-settings-expanded-to-verify-CGI-and-ISAPI-Extensions-are-selected.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/IIS-settings-expanded-to-verify-CGI-and-ISAPI-Extensions-are-selected.png) 3.Under **Security**, ensure that **Basic** **Authentication** and **Windows** **Authentication** are selected.[![Select Basic and Windows Authentication under Security](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Select-Basic-and-Windows-Authentication-under-Security.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Select-Basic-and-Windows-Authentication-under-Security.png) 4.Click **OK** to install the selected features. With these steps, all necessary prerequisites are now configured. ## Preparing the IIS server Before proceeding, confirm that IIS is already configured and that Analysis Services have been installed. If not, follow these steps: ### Install IIS 1.Click **Start**, then select **Turn** **Windows** **features** **on** **or** **off** option. 2.Select **Internet Information Services** and any other necessary features, then click **OK** to begin the installation.[![Install IIS](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Install-IIS.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Install-IIS.png) 3.Once installed, verify by searching for **IIS** in the **Start** menu and selecting **Internet Information Services (IIS)** from the search results.[![Verify IIS via Start menu search](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Verify-IIS-via-Start-menu-search.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Verify-IIS-via-Start-menu-search.png) ### Install SQL Server Analysis Services To install **SQL Server Analysis Services** on your machine, follow the instructions provided in the [blog](https://learn.microsoft.com/en-us/analysis-services/instances/configure-http-access-to-analysis-services-on-iis-8-0?view=asallproducts-allversions "Blog: Configure HTTP Access to Analysis Services on IIS 8.0"). Once your machine has IIS and Analysis services installed: 1.Navigate to the IIS root directory, typically located at **C:\inetpub\wwwroot**. 2.Create a new folder named **OLAP** under **wwwroot**.[![Create New OLAP folder in wwwroot](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Create-New-OLAP-folder-in-wwwroot.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Create-New-OLAP-folder-in-wwwroot.png) 3.Copy the files **msmdpump.** **dll**, **mdmdpump.ini**, and the **Resources** folder from **C:\Program Files\Microsoft SQL Server\MSAS15.MSSQLSERVER\OLAP\bin\isapi** (adjust the path according to your installation).[![Copy files from SQL Server path.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Copy-files-from-SQL-Server-path..png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Copy-files-from-SQL-Server-path..png) 4.Paste these files into the newly created **OLAP** folder.[![Paste files into OLAP folder](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Paste-files-into-OLAP-folder.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Paste-files-into-OLAP-folder.png) Check that the **C:\inetpub\wwwroot\OLAP** folder on your machine contains **msmdpump.dll, mdmdpump.ini**, and the **Resources** folders. Your folder structure should look like the above image. The IIS directory has now been set up. ## Creating an app pool and virtual directory in IIS To set up an app pool and an endpoint for the pump, follow these steps: ### Create an app pool 1.Launch the IIS Manager by entering **inetmgr** in the **Run** command window.[![Open IIS Manager via inetmgr.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Open-IIS-Manager-via-inetmgr.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Open-IIS-Manager-via-inetmgr.png) 2.Right-click on **Application** **Pools**, and then select **Add** **Application** **Pool**.[![Right-click and add App Pool.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Right-click-and-add-App-Pool.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Right-click-and-add-App-Pool.png) 3.Using the .NET Framework, create an application pool named **OLAP** and set the Managed pipeline mode to **Classic**. Click **OK** to complete the process.[![Create OLAP app pool, Classic mode](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Create-OLAP-app-pool-Classic-mode.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Create-OLAP-app-pool-Classic-mode.png) 4.By selecting the **Application Pools** on the left panel, you will see the newly created pool named **OLAP**.[![View new OLAP pool in App Pools](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/View-new-OLAP-pool-in-App-Pools.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/View-new-OLAP-pool-in-App-Pools.png) 5.By default, IIS creates application pools with **ApplicationPoolIdentity** as the security identity, which is appropriate for HTTP access to Analysis Services. You can change this identity by right-clicking OLAP and selecting Advanced Settings and the **ApplicationPoolIdentity** if necessary. Click the **Change** button next to this property to replace the built-in account with the custom account.[![Change ApplicationPoolIdentity in IIS](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Change-ApplicationPoolIdentity-in-IIS.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Change-ApplicationPoolIdentity-in-IIS.png) 6.For the 64-bit operating system, IIS automatically sets the **Enable 32-bit Applications** property to **false**. If you copied the **msmdpump.****dll** from a 64-bit Analysis Services installation, this is the correct **MSMDPUMP** extension configuration for a 64-bit IIS server. If you copied MSMDPUMP binaries from a 32-bit installation, set **the** **Enable 32-bit Applications** property to **true**. Ensure this property is in **Advanced** **Settings** to ensure it is set correctly. Now, the application pool has been created, but no apps exist. So, we need to create the application now. ### Create an application 1.In IIS Manager, go to **the** **Sites** section and locate **the** **Default** **Web** **Site**. You will see a directory named **OLAP**. This refers to the OLAP folder you previously created under **C:\inetpub\wwwroot**.[![Locate OLAP folder in IIS Sites](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Locate-OLAP-folder-in-IIS-Sites.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Locate-OLAP-folder-in-IIS-Sites.png) 2.Right-click on the **OLAP** directory and select **Convert** **to Application**.[![Right-click OLAP, select Convert](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Right-click-OLAP-select-Convert.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Right-click-OLAP-select-Convert.png) 3.In the **Add Application** dialog, enter OLAP as the Alias. Click **Select** to choose the OLAP application pool and set the Physical Path to **C:\inetpub\wwwroot\OLAP**. Finally, click **OK**.[![Set OLAP Alias, choose pool, path, click OK.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Set-OLAP-Alias-choose-pool-path-click-OK.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Set-OLAP-Alias-choose-pool-path-click-OK.png) 4.When you refresh the website, you will see that the **OLAP** folder is now shown as an application under the default website. The virtual path to the **msmdpump** file has now been established.[![OLAP folder now an app; msmdpump path set.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OLAP-folder-now-an-app-msmdpump-path-set..png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OLAP-folder-now-an-app-msmdpump-path-set..png) ## Configure authentication in IIS 1.Select the **OLAP** application in the left panel, then double-click **Authentication**.[![OLAP app selected, Auth double-clicked](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OLAP-app-selected-Auth-double-clicked-1.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OLAP-app-selected-Auth-double-clicked-1.png) 2.Enable **Windows Authentication** if you are using Windows-integrated security. If your client and server apps are in different domains, enable **Basic Authentication**. This mode will ask the user to enter a username and password, which are transmitted to IIS via the HTTP connection. When connecting to **msmdpump**, IIS will attempt to impersonate the user using the credentials provided, but Analysis Services will not be granted access to the credentials. In such cases, you must provide a valid username and password when connecting.[![Windows Authentication Integrated & Basic](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Windows-Authentication-Integrated-Basic.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Windows-Authentication-Integrated-Basic.png) 3.If you use Windows or Basic authentication, disable **Anonymous Authentication**. IIS prioritizes Anonymous authentication when enabled, even if other authentication methods are also enabled. ## Adding a script map to the msmdpump.dll 1.Click on the **OLAP** virtual directory to open the main page, then double-click on **Handler Mappings**.[![Open OLAP dir, double-click Handler Mappings](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Open-OLAP-dir-double-click-Handler-Mappings.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Open-OLAP-dir-double-click-Handler-Mappings.png) 2.Right-click anywhere on the page, then choose **Add Script Map**. In the **Add Script Map** dialog, enter **\*.dll** as the request path, **C:\inetpub\wwwroot\OLAP\msmdpump.dll** as the executable, and **OLAP** as the name. Keep all the default restrictions on this script map. Then, click **OK**.[![Add script map .dll, msmdpump.dll, OLAP](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Add-script-map-.dll-msmdpump.dll-OLAP.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Add-script-map-.dll-msmdpump.dll-OLAP.png) 3.When prompted to allow the **ISAPI** extension, select **Yes**.[![Allow ISAPI extension Select Yes.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Allow-ISAPI-extension-Select-Yes..png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Allow-ISAPI-extension-Select-Yes..png) The script map named OLAP will now appear in the **Handler Mappings** list.[![OLAP map added to Handler Mappings](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OLAP-map-added-to-Handler-Mappings.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OLAP-map-added-to-Handler-Mappings.png) ## Testing your configuration The **msmdpump** connection string syntax is the URL to the **msmdpump.dll** file. If the web app listens on a specific port, you should include the port number in the server’s name or IP address (e.g., **http://localhost:80/OLAP/msmdpump.dll** ). Use **Internet Explorer**, **Microsoft Excel**, or **SQL Server Management Studio** to test the connection quickly. ### Testing connections with SQL Server Management Studio 1.Open the SQL Server **Management Studio**. In the **Connect** **to** **Server** dialog box, choose **Analysis** **Services** as the server type. Enter the following HTTP address for the msmdpump extension: [http://localhost:80/OLAP/msmdpump.dll](http://localhost:80/OLAP/msmdpump.dll "Localhost"). 2.Authentication should be set to Windows authentication, and the user of Management Studio must be an **Analysis** **Services** **administrator**. An administrator can grant additional permissions to other users. 3.Click **Connect** to establish the HTTP connection.[![Click Connect to establish the HTTP connection.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Click-Connect-to-establish-the-HTTP-connection..png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Click-Connect-to-establish-the-HTTP-connection..png) Now, you can connect to the instance and browse all the databases and cubes.[![Explore databases and cubes!](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Explore-databases-and-cubes.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Explore-databases-and-cubes.png) ### Testing connections using Excel 1.Open the Excel application and go to the **Data** tab. 2.To launch the Data Connection wizard, click on **Get** **Data**, then **From** **Database**, and select **From** **Analysis** **Services**.[![Launch Data Connection Get, Database, Analysis.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Launch-Data-Connection-Get-Database-Analysis..png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Launch-Data-Connection-Get-Database-Analysis..png) 3.In the Server name field, enter the HTTP address for the msmdpump extension: [http://localhost:80/OLAP/msmdpump.dll](http://localhost:80/OLAP/msmdpump.dll "Localhost"). 4.If you use Windows integrated security, NTLM, or Anonymous as your login credentials, select **Use** **Windows** **Authentication**. For basic authentication, choose the **Use the following User Name and Password** check box and then specify the credentials used to sign in. These credentials will be included in the connection string to Analysis Services. 5.You can connect to the instance by clicking **Next** and browse the databases and cubes.[![Connect instance, browse DB & cubes.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Connect-instance-browse-DB-cubes..png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Connect-instance-browse-DB-cubes..png) ## Enabling cross-origin resource sharing (CORS) Web browsers, by default, prevent JavaScript from making requests across domains, a security measure known as the **Same-Origin Policy**. **CORS** (Cross-Origin Resource Sharing) enables web apps to make requests across domains securely. To enable CORS, we must follow these steps. ### Configuring HTTP response headers To configure HTTP response headers, first, you must add the required headers in the **OLAP** app. 1.In the IIS manager, select the OLAP application in the left panel and then double-click on **HTTP Response Headers**.[![Manage OLAP app, tweak HTTP headers.](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Manage-OLAP-app-tweak-HTTP-headers..png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Manage-OLAP-app-tweak-HTTP-headers..png) 2.Right-click anywhere on the page and select **Add**. In the Edit Custom HTTP Response Header dialog, set the **Name** to **Access-Control-Allow-Headers** and the **Value** to **Origin**, **Content-Type**, and **Accept**. Finally, click **OK** to add the header.[![Set Access-Control-Allow-Headers Origin, Content-Type, Accept](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Set-Access-Control-Allow-Headers-Origin-Content-Type-Accept.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Set-Access-Control-Allow-Headers-Origin-Content-Type-Accept.png) 3.Follow the same process to define the remaining two headers: **Access-Control-Allow-Origin** and **Access-Control-Request-Method**. The headers should be defined as shown below. ``` Access-Control-Allow-Headers: Origin, Content-Type, Accept Access-Control-Allow-Origin: * Access-Control-Request-Method: POST ``` Refer to the following image.[![](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Define-headers-Access-Control-Allow-Origin-Access-Control-Request-Method..png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Define-headers-Access-Control-Allow-Origin-Access-Control-Request-Method..png) ### Configuring the OPTIONSVerbHandler 1.In the IIS manager, select the **OLAP** application in the left panel and double-click **Handler Mappings.[![OLAP app Double-click Handler Mappings](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OLAP-app-Double-click-Handler-Mappings.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OLAP-app-Double-click-Handler-Mappings.png)** 2.Next, double-click on **OPTIONSVerbHandler** to open the **Edit** **Module** **Mapping** dialog.[![Edit Module Mapping OPTIONSVerbHandler](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Edit-Module-Mapping-OPTIONSVerbHandler.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Edit-Module-Mapping-OPTIONSVerbHandler.png) 3.Now, choose the **Request Restrictions** button.[![Select Request Restrictions now](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Select-Request-Restrictions-now.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Select-Request-Restrictions-now.png) 4.In the **Access** tab, select **Read** and then click **OK**.[![Select Read, click OK in Access](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Select-Read-click-OK-in-Access.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Select-Read-click-OK-in-Access.png) 5.On the right panel, click **View** **Ordered** **List** and ensure that **OPTIONSVerbHandler** is at the top of the **Handler** **Mappings** list.[![OPTIONSVerbHandler on top View Ordered List](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OPTIONSVerbHandler-on-top-View-Ordered-List.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/OPTIONSVerbHandler-on-top-View-Ordered-List.png) 6.If not, select the **OPTIONSVerbHandler** and use the **Move Up** command in the **Actions** menu to bring it to the top of the list.[![Move OPTIONSVerbHandler to top](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Move-OPTIONSVerbHandler-to-top.png)](https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Move-OPTIONSVerbHandler-to-top.png) ## Connecting the OLAP cube to the Pivot Table To connect the OLAP cube, ensure the Syncfusion Vue Pivot Table is integrated into your Vue app. If this integration is not yet in place, follow the installation and setup instructions provided by Syncfusion in the [documentation](https://ej2.syncfusion.com/vue/documentation/pivotview/olap "Get Started with Olap in Vue Pivot Table component"). Once created, configure the report below, replacing the [url](https://helpej2.syncfusion.com/vue/documentation/api/pivotview/dataSourceSettingsModel/#url "URL property for Vue Pivot Table"), [catalog](https://helpej2.syncfusion.com/vue/documentation/api/pivotview/dataSourceSettingsModel/#catalog "Catalog property for Vue Pivot Table"), [cube](https://helpej2.syncfusion.com/vue/documentation/api/pivotview/dataSourceSettingsModel/#cube "Cube property for Vue Pivot Table"), and [providerType](https://ej2.syncfusion.com/vue/documentation/api/pivotview/dataSourceSettings/#providertype "providerType property for Vue Pivot Table") properties with your values. **[app.vue]** ```js <template> <div id="app"> <ejs-pivotview :dataSourceSettings="dataSourceSettings" :height= "height"> </ejs-pivotview> </div> </template> <script> import Vue from "vue"; import { PivotViewPlugin } from '@syncfusion/ej2-vue-pivotview'; Vue.use(PivotViewPlugin); export default { name: 'app', data () { return { dataSourceSettings: { catalog: 'AdventureWorksDW2014Multidimensional-SE', cube: 'Adventure Works', providerType: 'SSAS', url: 'http://localhost:80/OLAP/msmdpump.dll', enableSorting: true, localeIdentifier: 1033, rows: [ { name: '[Customer].[Customer Geography]', caption: 'Customer Geography' }, ], columns: [ { name: '[Product].[Product Categories]', caption: 'Product Categories' }, { name: '[Measures]', caption: 'Measures' }, ], values: [ { name: '[Measures].[Customer Count]', caption: 'Customer Count' }, { name: '[Measures].[Internet Sales Amount]', caption: 'Internet Sales Amount' } ], }, height: 350 } } } </script> <style> @import '../node_modules/@syncfusion/ej2-base/styles/material.css'; @import '../node_modules/@syncfusion/ej2-buttons/styles/material.css'; @import '../node_modules/@syncfusion/ej2-dropdowns/styles/material.css'; @import '../node_modules/@syncfusion/ej2-grids/styles/material.css'; @import '../node_modules/@syncfusion/ej2-inputs/styles/material.css'; @import '../node_modules/@syncfusion/ej2-lists/styles/material.css'; @import '../node_modules/@syncfusion/ej2-navigations/styles/material.css'; @import '../node_modules/@syncfusion/ej2-popups/styles/material.css'; @import '../node_modules/@syncfusion/ej2-calendars/styles/material.css'; @import "../node_modules/@syncfusion/ej2-pivotview/styles/material.css"; </style> ``` After configuring the reports, execute the project using the command **_npm run dev_**. The Pivot Table will now be presented, as illustrated below. <figure> <img src="https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Syncfusion-Vue-Pivot-Table-displaying-OLAP-cube-data.png" alt="Syncfusion Vue Pivot Table displaying OLAP cube data" style="width:100%"> <figcaption>Syncfusion Vue Pivot Table displaying OLAP cube data</figcaption> </figure> ## GitHub reference For more details, see the demo in this [GitHub demo](https://github.com/SyncfusionExamples/How-to-configure-HTTP-Access-to-Analysis-Services-on-IIS-and-connect-it-to-the-Vue-Pivot-Table "GitHub demo: Pivot Table displaying OLAP cube data"). ## Conclusion Thanks for reading! In this blog, we have learned how to set up HTTP access to analysis services on IIS for optimal OLAP cube analysis and connect it to the Syncfusion Vue Pivot Table. So, try the steps explained in this blog, and share your thoughts in the comments section! Our Pivot Table is a versatile component available across our [Blazor](https://www.syncfusion.com/blazor-components/blazor-pivot-table "Blazor Pivot Table"), ASP.NET ([Core](https://www.syncfusion.com/aspnet-core-ui-controls/pivot-table "ASP.NET Core Pivot Table"), [MVC](https://www.syncfusion.com/aspnet-mvc-ui-controls/pivot-table "ASP.NET MVC Pivot Table")), [JavaScript](https://www.syncfusion.com/javascript-ui-controls/js-pivot-table "JavaScript Pivot Table"), [Angular](https://www.syncfusion.com/angular-ui-components/angular-pivot-table "Angular Pivot Table"), [React](https://www.syncfusion.com/react-ui-components/react-pivot-table "React Pivot Table"), and [Vue](https://www.syncfusion.com/vue-ui-components/vue-pivot-table "Vue Pivot Table") suites. Use it to organize and summarize business data elegantly in any app! For our existing customers, the latest version of Essential Studio can be downloaded from the [License and Downloads](https://www.syncfusion.com/account/downloads "Essential Studio License and Downloads page") page. If you are new to Syncfusion, try our 30-day [free trial](https://www.syncfusion.com/downloads "Get free evaluation of the Essential Studio products") to explore the available features. For questions, you can contact us through our [support forum](https://www.syncfusion.com/forums "Syncfusion Support Forum"), [support portal](https://support.syncfusion.com/ "Syncfusion Support Portal"), or [feedback portal](https://www.syncfusion.com/feedback/ "Syncfusion Feedback Portal"). We are always happy to assist you! ## References - [Syncfusion Vue Pivot Table Documentation](https://ej2.syncfusion.com/vue/documentation/pivotview/olap "Get Started with Olap in Vue Pivot Table component") - [Creating Pivot Table with OLAP Data in JavaScript](https://www.syncfusion.com/blogs/post/create-pivot-table-with-olap-data-javascript.aspx "Blog: How to Create Pivot Table with OLAP Data in JavaScript") - [Microsoft Learn: Configure HTTP Access to Analysis Services on IIS 8.0](https://learn.microsoft.com/en-us/analysis-services/instances/configure-http-access-to-analysis-services-on-iis-8-0?view=asallproducts-allversions "Article: Configure HTTP Access to Analysis Services on IIS 8.0")
jollenmoyani
1,878,846
How to Choose the Font Color Based on the Background
In the web browser, the font color is set to black by default. Have you ever thought about why? It's...
0
2024-06-06T13:12:43
https://dev.to/louis7/how-to-choose-the-font-color-based-on-the-background-color-402a
webdev, css, javascript
In the web browser, the font color is set to black by default. Have you ever thought about why? It's not rocket science, just because of the background and the text has high contrast so you can tell apart the text and the background. When the background is white, you use the black font and when it's black you choose the opposite. But what if the background is not black and white but other colors? (Suppose we only have the black and white font in this world 😝😝) The text on these buttons looks harmonious, right? (I take them from the [Bootstrap document](https://getbootstrap.com/docs/5.3/components/buttons/)) ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/g3uut65iruwrvih9we9z.png) If I reverse the font color: ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/7xyqe3z4nc9jz2z0c88r.png) You still can see the text on most of the buttons but the contrast becomes lower. Here's another example. On the dark blue background, the white font is easier to read. However, the black font is a better choice on the water blue background. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/h0u5lqrtiakyk4v3grh8.png) As a software engineer, I always implement the UI based on the design, I barely think about how the designer chooses the font color until a question comes up in my mind. What if I want to display a text on the background that will change its color dynamically? Like, on Monday it's white but on Tuesday it changes to blue. ## How do you choose the font color? We can choose font color based on the background luminance. According to the contrast ratio formula given by [W3C Recommendation](https://www.w3.org/TR/WCAG21/#dfn-contrast-ratio): ``` contrast ratio = (L1 + 0.05) / (L2 + 0.05) ``` - L1 is the relative luminance of the lighter of the colors, and - L2 is the relative luminance of the darker of the colors - L<sub>black</sub> is `0` - L<sub>white</sub> is `1` I will use `L` to represent the luminance of the background color. Now, we can say if <code>(L + 0.05) / (L<sub>black</sub> + 0.05) > (L<sub>white</sub> + 0.05) / (L + 0.05)</code> we can use black(#000000) as the font color. Otherwise, use white(#ffffff). Let's simplify the formula: <pre> (L + 0.05) / (0.0 + 0.05) > (1.0 + 0.05) / (L + 0.05) (L + 0.05)<sup>2</sup> > (1.05 * 0.05) (L + 0.05) > √(1.05 * 0.05) L > √(1.05 * 0.05) - 0.05 L > 0.179 </pre> We only need to calculate the `L`. The formula to calculate the relative luminance is given by [W3C Recommendation](https://www.w3.org/TR/WCAG21/#dfn-relative-luminance). ```javascript // suppose background color in hexadecimal formart: #ff00ee function textColorBasedOnBackground(backgroundColor) { backgroundColor = backgroundColor.substring(1); const r = parseInt(backgroundColor.substring(0,2), 16); // 0 ~ 255 const g = parseInt(backgroundColor.substring(2,4), 16); const b = parseInt(backgroundColor.substring(4,6), 16); const srgb = [r / 255, g / 255, b / 255]; const x = srgb.map((i) => { if (i <= 0.04045) { return i / 12.92; } else { return Math.pow((i + 0.055) / 1.055, 2.4); } }); const L = 0.2126 * x[0] + 0.7152 * x[1] + 0.0722 * x[2]; return L > 0.179 ? "#000" : "#fff"; } ``` ## Example Here's an example. You can observe the font color while changing the background color. {% codepen https://codepen.io/louis-7/pen/pomPXVe %} References: [Web Content Accessibility Guidelines (WCAG) 2.1](https://www.w3.org/TR/WCAG21/) [Determine the best text color for a given background color](https://ux.stackexchange.com/questions/114952/determine-the-best-text-color-for-a-given-background-color#:~:text=In%20your%20case%20you%20simply,on%20the%20highest%20contrast%20ratio.&text='Pleasing%20to%20the%20eyes'%20is%20very%20subjective) [How to decide font color in white or black depending on background color?](https://stackoverflow.com/questions/3942878/how-to-decide-font-color-in-white-or-black-depending-on-background-color)
louis7
1,879,278
Why is a Quality Assurance Tester Needed on a Software Development Team?
I see software development as a complex process that requires my careful attention to detail and a...
0
2024-06-06T13:08:27
https://dev.to/igor_ag_aaa2341e64b1f4cb4/why-is-a-quality-assurance-tester-needed-on-a-software-development-team-16g1
softwaredevelopment, qa, management, team
I see software development as a complex process that requires my careful attention to detail and a commitment to delivering high-quality products. With fast-paced development cycles and rising customer expectations, I have grown to value the role of quality assurance (QA) testers significantly. These essential team members work diligently behind the scenes to ensure the software's quality, reliability, and performance. In this article, I will discuss the crucial need for quality assurance testers in a software development team. I aim to cover the various aspects of QA testing, debunk common misconceptions, and highlight the significant benefits that dedicated QA testers provide. ## Why Are QA Engineers Essential? In software development, QA Testers are essential. They are responsible for confirming that software products adhere to strict quality standards. QA Testers assess aspects like functionality, reliability, usability, and performance. By conducting thorough tests and detailed examinations of each element, QA Engineers play a key role in detecting and fixing any flaws, irregularities, or problems that might impair the user experience or the software’s operation. For software development teams aiming to achieve superior product quality, the employment of a skilled QA Engineer is essential. Their knowledge not only enhances product quality but also cuts down on the potential expenses involved in fixing defects after launch, which are typically more significant and complicated to address. Moreover, a dedicated QA professional enhances the efficiency of development processes, boosts customer satisfaction, and ensures compliance with industry standards. Ultimately, integrating a QA Engineer into your team is a strategic investment that enhances the software’s integrity, market readiness, and user acceptance, thereby safeguarding the project's success and longevity. As we explore the various steps involved in a software project's development process, let's also examine the critical role of a PR (Pull Request) in software development and how it integrates into these stages. ## The Advantages of Integrating QA Testers into Development Teams ![Integrating QA Testers into Team](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/rw4ypekz10luyr3erahv.png) Having QA testers on a software development team offers several advantages that can significantly improve the development process and the quality of the final product. Firstly, QA testers bring a high level of precision to the project by systematically verifying each feature against specified requirements. This attention to detail ensures that the software functions correctly across different environments and usage scenarios. Moreover, QA testers contribute to the efficiency of the development cycle. They identify defects early in the process, which minimizes the cost and complexity of fixing them later. This early detection not only saves time and resources but also helps maintain the project's schedule and budget. Additionally, their involvement promotes a culture of quality within the team, encouraging developers to produce higher-quality code from the outset. QA testers also enhance the reliability and user satisfaction of the software. By ensuring the product is bug-free and operates smoothly, they help build a positive reputation for reliability and customer satisfaction, which is crucial for competitive differentiation and customer retention. ## Exploring the Ins and Outs of Quality Assurance Processes The process of Quality Assurance in software development is a systematic approach that involves several key stages: - **Planning and Analysis:** This initial stage focuses on understanding the requirements and establishing clear expectations for the software's functionality and performance. QA teams collaborate with stakeholders to develop a comprehensive testing strategy that aligns with the project goals. - **Designing Test Cases:** Based on the requirements, QA testers design test cases that cover all aspects of the software. These test cases are designed to check not only functional aspects but also performance, security, usability, and compliance with standards. - **Test Execution:** QA testers execute the designed test cases to identify any defects in the software. This involves both manual testing and automated testing tools. The results are meticulously documented, with bugs being tracked and prioritized based on their severity. - **Bug Fixing and Re-testing:** Developers address the issues identified during the test phase, after which QA testers retest the software to ensure that the fixes are effective and that no new problems have arisen. - **Final Validation and Release:** Once the software meets all the quality standards and passes all tests, it undergoes a final validation before being released to the market. - Post-Release Support: QA teams continue to monitor the software after release to handle any emerging issues quickly. ## Developer Testing vs. QA Testing When examining the distinctions between developer testing and QA testing, it is essential to acknowledge their separate but essential contributions to the software development process. Each type targets different quality aspects of the software. Developer testing, or unit testing, involves developers creating tests to check that specific code segments, like functions or methods, function correctly. This is often seen as the initial safeguard against bugs, allowing developers like me to identify and fix problems early on, usually before the code is integrated into the main repository. This method is technical and demands a thorough understanding of the application's internal architecture. Conversely, Quality Assurance testing takes a more expansive and holistic approach. It goes beyond mere code accuracy to address user expectations and the software's behavior across different settings. QA testers apply a variety of testing methods, such as functional, integration, system, and acceptance tests. These evaluations determine not only the technical performance of the code but also its compatibility with other components and its adherence to business goals. From my viewpoint, QA testing is crucial for examining aspects like user experience, performance, and security, which may not be prioritized during developer testing. There's also a fundamental difference in the mindset and tools each role utilizes. As a developer, my focus tends to be on debugging tools and frameworks specific to the programming language used. In contrast, QA testers might employ both automated tools and manual techniques to mimic user interactions under a broader range of scenarios than those typically considered by developers. ## Essential Skills for a Quality Assurance Tester When considering the essential skills for a Quality Assurance (QA) tester, I believe several key abilities stand out as particularly critical for success in this role. Through observations and interactions with professionals in this field, I've identified a few core competencies that seem to make a significant difference. Attention to detail is a skill that cannot be overstated. QA testers need to have a keen eye for discrepancies and errors that might be missed by others. This involves scrutinizing everything from user interfaces to complex functionalities to ensure that the software operates exactly as intended under various conditions. Analytical skills are equally important. A QA tester must dissect complex software systems and understand the interactions between various components. This analytical prowess helps in pinpointing the root cause of issues, facilitating more effective troubleshooting and resolution of problems. Effective communication is vital in QA testing. It ensures that everyone from developers to project managers comprehends the test results, the impact of problems, and the corrective actions needed. Moreover, precise bug reporting is essential to prevent confusion and guarantee that issues are resolved quickly and efficiently. Technical proficiency also plays a vital role in a QA tester's skill set. Understanding programming concepts, even at a basic level, can enhance a tester's ability to navigate through different testing scenarios and use various tools more effectively. This doesn’t necessarily mean being able to code, but having a solid grasp of software environments and testing technologies is certainly beneficial. Lastly, adaptability is essential. Technology and software development is ever-changing, with new tools and methodologies emerging continually. A successful QA tester must be able to adapt quickly to these changes, incorporating new practices and tools into their workflow as needed. ## Common Tools and Technologies Utilized by QA Testers ![Tools for QA Testers](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/va78z5ij7uohsyd0ertw.png) QA testers use a variety of tools to ensure software quality and functionality, verifying that products meet standards before reaching end-users. One of the most common types of tools used by QA testers are automated testing tools. [Selenium](https://www.selenium.dev/), for instance, is a powerful tool for automating web browsers, allowing testers to simulate user interactions with a web application automatically. Similarly, [QTP](https://www.microfocus.com/marketplace/appdelivery/content/quicktest-professional-and-quicktest-professional-business-process-testing-add) (Quick Test Professional), now known as [UFT](https://www.lambdatest.com/software-testing-questions/what-is-uft) (Unified Functional Testing), provides a broader testing framework that supports both web and desktop applications. Bug tracking tools are also essential in the QA toolkit. [Jira](https://www.atlassian.com/software/jira) is one of the most widely used tools for tracking defects, managing tasks, and integrating with various testing tools. It helps maintain transparency and communication within the team by allowing testers, developers, and managers to keep track of issues and their resolutions. Bugzilla is another tool that, although simpler, effectively tracks bugs and collaborates on fixes. For performance and load testing, tools like [LoadRunner](https://www.opentext.com/products/loadrunner-enterprise) and [Apache JMeter](https://jmeter.apache.org/) are commonly employed. These tools simulate a high number of users accessing the application to ensure that the application performs well under stress and that the user experience is not compromised during peak loads. API testing tools such as [Postman](https://www.postman.com/) and [SoapUI](https://www.soapui.org/) are crucial for testing the integrity and reliability of APIs, which are often the backbone of modern software applications. These tools help testers execute requests, receive responses, and verify the API behavior against expected outcomes. Lastly, mobile testing platforms like [Appium](https://appium.io/) facilitate the testing of mobile applications across different devices and operating systems. This is crucial as mobile applications need to perform well across a myriad of devices with varying screen sizes and operating systems. ## Conclusion QA Testers are vital in software development teams, ensuring product quality and reliability. They conduct thorough testing at various development stages, preventing failures that could impact user experience and the company's reputation. QA testers not only identify bugs to streamline development and reduce post-release costs but also enhance software usability, performance, and standard compliance. Investing in a strong QA team is a strategic decision that supports the long-term success of software projects.
igor_ag_aaa2341e64b1f4cb4
1,879,277
FINQ's weekly market insights: Peaks and valleys in the S&P 500 – June 6, 2024
Dive into this week's market dynamics, highlighting the S&amp;P 500's leaders and laggards with...
0
2024-06-06T13:08:13
https://dev.to/eldadtamir/finqs-weekly-market-insights-peaks-and-valleys-in-the-sp-500-june-6-2024-37ap
ai, stockmarket, investing, stocks
Dive into this week's market dynamics, highlighting the S&P 500's leaders and laggards with FINQ's precise AI analysis. ## **Top achievers:** - Amazon (AMZN) - ServiceNow (NOW) - Uber Technologies (UBER) ## **Facing challenges:** - Loews Corp (L) - Amcor PLC (AMCR) - Davita Inc (DVA) Understand the market shifts with our detailed analysis and strategic insights. **Disclaimer:** This information is for educational purposes only and is not financial advice. Always consider your financial goals and risk tolerance before investing.
eldadtamir
1,879,276
Getting Started with Azure Bot Service: Building Your First Chatbot
Introduction Importance of chatbots for customer support and engagement. Overview of Azure Bot...
0
2024-06-06T13:06:17
https://dev.to/arpit_dhiman_afe108fe83fb/getting-started-with-azure-bot-service-building-your-first-chatbot-i04
ai, azure, bot, azurebot
**Introduction** Importance of chatbots for customer support and engagement. Overview of Azure Bot Service for building, deploying, and managing bots. Prerequisites Active Azure account. Basic knowledge of C# or JavaScript. Visual Studio or Visual Studio Code. Step 1: Setting Up Azure Bot Service Create a New Bot Service: **Use the Azure Portal to create a Bot Service**. Fill in details like Bot handle, subscription, and resource group. Configure the Bot: **Set the messaging endpoint in the bot resource settings.** Step 2: **Creating a Bot Application** Create a New Project: **Use Visual Studio or Visual Studio Code to create a bot project with the Bot Framework template.** Install Bot Framework SDK: For C#, install Microsoft.Bot.Builder and Microsoft.Bot.Builder.Integration.AspNet.Core via NuGet. For JavaScript, install botbuilder and restify via npm. Implement the Bot Logic: **Write code to handle messages, e.g., an echo bot that repeats user input. Step 3: Testing and Deploying Your Bot** Test Locally: Use the Bot Framework Emulator to test your bot. Deploy to Azure: Deploy the bot from Visual Studio or using Azure CLI. Update the messaging endpoint in the Azure Bot Service settings. **Step 4: Connecting to Channels** Add Channels: Add desired channels (e.g., Teams, Slack, Facebook Messenger) via the Azure Portal. Configure Channel Settings: Provide necessary API keys or tokens for each platform. Conclusion Overview of the steps to build and deploy a chatbot using Azure Bot Service. Encouragement to integrate additional Azure services for extended capabilities.
arpit_dhiman_afe108fe83fb
1,879,275
How to Choose the Best SEO Company in Delhi for Your Business
Selecting the right SEO company is crucial for the online success of your business. With so many...
0
2024-06-06T13:04:44
https://dev.to/alphamedia/how-to-choose-the-best-seo-company-in-delhi-for-your-business-1map
Selecting the right SEO company is crucial for the online success of your business. With so many options available in a bustling city like Delhi, it can be overwhelming to make the right choice. Here are some essential tips to help you choose the [best SEO company in Delhi](https://www.alphamedia.in) for your business needs. **1. Understand Your SEO Needs** Before you start your search, it's important to identify your specific SEO goals. Are you looking to increase your website traffic, improve your search engine rankings, or enhance your overall online presence? Having a clear understanding of your needs will help you find an SEO agency in Delhi that specializes in those areas. **2. Research Potential Companies** Once you have a clear idea of your SEO objectives, start researching potential [SEO services in Delhi](https://www.alphamedia.in/seo.html). Look for companies with a strong track record, positive client testimonials, and case studies showcasing their success. A reliable SEO agency in Delhi will have a proven history of helping businesses achieve their online marketing goals. **3. Check Their Experience and Expertise** Experience matters when it comes to SEO. Look for an SEO company in Delhi with a team of seasoned professionals who have a deep understanding of the latest SEO trends and algorithms. An experienced team will be better equipped to develop and implement effective SEO strategies tailored to your business. **4. Evaluate Their SEO Techniques** Ask potential SEO companies about the techniques they use. Ensure they follow ethical SEO practices and stay updated with the latest Google guidelines. Avoid agencies that promise quick fixes or use black hat techniques, as these can result in penalties from search engines and harm your website's reputation. **5. Request a Comprehensive Proposal** A reputable SEO service in Delhi will provide a detailed proposal outlining their approach, strategies, and expected outcomes. This proposal should include an analysis of your current website performance, a list of targeted keywords, on-page and off-page optimization tactics, and a timeline for achieving the desired results. **6. Consider Their Communication and Reporting** Effective communication is essential for a successful SEO partnership. Choose an [SEO agency in Delhi](https://www.alphamedia.in/location-wise-seo.html) that provides regular updates and detailed reports on your campaign's progress. This transparency will help you understand the impact of their efforts and ensure that your goals are being met. **7. Assess Their Pricing Structure** SEO is an investment in your business's future. While it's important to find an [SEO company in Delhi](https://www.alphamedia.in/local-seo.html) that fits within your budget, be wary of agencies that offer exceptionally low prices. Quality SEO services require time, effort, and expertise, so be prepared to invest accordingly for the best results. **8. Read Reviews and Seek Recommendations** Customer reviews and testimonials can provide valuable insights into an SEO company's reputation and performance. Look for reviews on independent platforms and seek recommendations from other businesses in your industry. Positive feedback from satisfied clients is a good indicator of a trustworthy SEO service in Delhi. **9. Ask About Their Success Metrics** Finally, ask potential SEO companies how they measure success. A reliable SEO agency in Delhi will focus on metrics that align with your business goals, such as organic traffic growth, lead generation, and conversion rates. They should be able to demonstrate how their efforts will contribute to your overall business success. Choosing the **best SEO company in Delhi** requires careful consideration and due diligence. By following these tips, you can find an SEO partner that will help you achieve your online marketing goals and drive your business to new heights. ![Image description](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/61s4ainunpawajd8j82e.jpg)
alphamedia
1,879,274
Write into existing .xlsx file and download the the file.
Is there a way to do this ? please help.
0
2024-06-06T13:03:00
https://dev.to/prafull_epili_e7904eb3b25/write-into-existing-xlsx-file-and-download-the-the-file-1fj0
react, help
Is there a way to do this ? please help.
prafull_epili_e7904eb3b25