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1,882,599 | Tétouan est une ville du nord du Maroc | Beauté naturelle Tétouan regorge de beautés naturelles, des montagnes du Rif aux plages immaculées de... | 0 | 2024-06-10T05:15:20 | https://dev.to/cskeisari665/tetouan-est-une-ville-du-nord-du-maroc-4eje | Beauté naturelle
Tétouan regorge de beautés naturelles, des montagnes du Rif aux plages immaculées de la côte méditerranéenne. Le parc national Talassemtane, situé à proximité, propose des sentiers de randonnée à travers des forêts luxuriantes, des cascades et des vues époustouflantes. Le parc abrite une flore et une faune diversifiées, ce qui en fait un paradis pour les amoureux de la nature et les amateurs de plein air.
Tétouan moderne
Si Tétouan est chargée d’histoire, c’est aussi une ville moderne dotée d’équipements et d’infrastructures contemporains. La ville dispose d'un secteur éducatif florissant, l'Université Abdelmalek Essaâdi jouant un rôle important dans le paysage universitaire de la région. Tétouan possède également une industrie touristique en pleine croissance, avec des hôtels, des restaurants et des services destinés aux visiteurs locaux et internationaux.
Cuisine
La cuisine de Tétouan reflète sa diversité culturelle, avec un mélange de saveurs arabes, berbères et andalouses. Les plats traditionnels comprennent les tajines, le couscous et la pastilla, une pâtisserie salée-sucrée remplie de viande et d'épices. Les fruits de mer frais sont abondants, compte tenu de la proximité de la ville avec la côte. Les marchés et restaurants locaux offrent un avant-goût du patrimoine culinaire de Tétouan, en mettant l'accent sur les ingrédients frais d'origine locale.
https://www.goquadtetouan.com | cskeisari665 | |
1,882,598 | Commonly Used Databases with Node.js and Express | In the world of web development, Node.js and Express have become go-to technologies for building... | 0 | 2024-06-10T05:13:29 | https://dev.to/vyan/the-most-commonly-used-databases-with-nodejs-and-express-1koe | webdev, javascript, node, database | In the world of web development, Node.js and Express have become go-to technologies for building fast, scalable, and efficient server-side applications. One crucial aspect of these applications is the database. Choosing the right database is essential for the performance and reliability of your app. In this blog post, we'll explore some of the most commonly used databases with Node.js and Express, discussing their features, use cases, and how to integrate them into your projects.
## 1. MongoDB
### Overview
MongoDB is a popular NoSQL database known for its flexibility and scalability. It stores data in JSON-like documents, making it easy to work with and integrate with JavaScript-based technologies like Node.js.
### Features
- **Schema-less Design**: You can store documents without a predefined schema, allowing for flexibility in data models.
- **Scalability**: MongoDB scales horizontally using sharding, making it suitable for large-scale applications.
- **Rich Query Language**: Supports a wide range of queries, including search by field, range queries, and regular expression searches.
### Use Cases
- Real-time analytics
- Content management systems
- E-commerce platforms
- Internet of Things (IoT) applications
### Integration with Node.js and Express
To integrate MongoDB with Node.js and Express, you can use the Mongoose library, which provides a straightforward schema-based solution to model your application data.
#### Example:
1. **Install Mongoose**:
```bash
npm install mongoose
```
2. **Connect to MongoDB**:
```javascript
const mongoose = require('mongoose');
mongoose.connect('mongodb://localhost:27017/mydatabase', {
useNewUrlParser: true,
useUnifiedTopology: true,
}).then(() => {
console.log('Connected to MongoDB');
}).catch(err => {
console.error('Error connecting to MongoDB', err);
});
```
3. **Define a Schema and Model**:
```javascript
const { Schema, model } = mongoose;
const userSchema = new Schema({
name: String,
email: String,
password: String,
});
const User = model('User', userSchema);
```
4. **Create an Express Route**:
```javascript
const express = require('express');
const User = require('./models/User');
const app = express();
app.use(express.json());
app.post('/users', async (req, res) => {
const user = new User(req.body);
try {
await user.save();
res.status(201).send(user);
} catch (error) {
res.status(400).send(error);
}
});
app.listen(3000, () => {
console.log('Server is running on port 3000');
});
```
## 2. MySQL
### Overview
MySQL is a widely-used relational database management system known for its reliability, performance, and ease of use. It uses structured query language (SQL) for database management.
### Features
- **ACID Compliance**: Ensures reliable transactions and data integrity.
- **Scalability**: Can handle large databases with high-performance requirements.
- **Security**: Provides robust security features, including data encryption and user authentication.
### Use Cases
- Financial applications
- Inventory management systems
- Customer relationship management (CRM) systems
- Web applications requiring structured data storage
### Integration with Node.js and Express
To integrate MySQL with Node.js and Express, you can use the `mysql2` or `sequelize` library for object-relational mapping (ORM).
#### Example:
1. **Install MySQL2**:
```bash
npm install mysql2
```
2. **Connect to MySQL**:
```javascript
const mysql = require('mysql2');
const connection = mysql.createConnection({
host: 'localhost',
user: 'root',
database: 'mydatabase',
password: 'password',
});
connection.connect((err) => {
if (err) {
console.error('Error connecting to MySQL', err);
return;
}
console.log('Connected to MySQL');
});
```
3. **Create an Express Route**:
```javascript
const express = require('express');
const app = express();
app.use(express.json());
app.get('/users', (req, res) => {
connection.query('SELECT * FROM users', (err, results) => {
if (err) {
res.status(500).send(err);
return;
}
res.send(results);
});
});
app.listen(3000, () => {
console.log('Server is running on port 3000');
});
```
## 3. PostgreSQL
### Overview
PostgreSQL is a powerful, open-source relational database system known for its advanced features and extensibility. It supports both SQL and JSON querying, providing a flexible solution for various applications.
### Features
- **ACID Compliance**: Ensures reliable transactions and data integrity.
- **Advanced Data Types**: Supports arrays, hstore, and JSONB for more complex data models.
- **Extensibility**: Allows users to define their own data types, operators, and index methods.
### Use Cases
- Complex web applications
- Geospatial applications (using PostGIS)
- Data warehousing
- Real-time applications
### Integration with Node.js and Express
To integrate PostgreSQL with Node.js and Express, you can use the `pg` library or an ORM like `Sequelize` or `TypeORM`.
#### Example:
1. **Install pg**:
```bash
npm install pg
```
2. **Connect to PostgreSQL**:
```javascript
const { Client } = require('pg');
const client = new Client({
user: 'user',
host: 'localhost',
database: 'mydatabase',
password: 'password',
port: 5432,
});
client.connect()
.then(() => console.log('Connected to PostgreSQL'))
.catch(err => console.error('Error connecting to PostgreSQL', err));
```
3. **Create an Express Route**:
```javascript
const express = require('express');
const app = express();
app.use(express.json());
app.get('/users', async (req, res) => {
try {
const result = await client.query('SELECT * FROM users');
res.send(result.rows);
} catch (error) {
res.status(500).send(error);
}
});
app.listen(3000, () => {
console.log('Server is running on port 3000');
});
```
## 4. Redis
### Overview
Redis is an in-memory data structure store, used as a database, cache, and message broker. It supports various data structures such as strings, hashes, lists, sets, and more.
### Features
- **In-memory Storage**: Extremely fast operations as data is stored in memory.
- **Pub/Sub Messaging**: Supports publish/subscribe messaging paradigm.
- **Persistence**: Provides different levels of persistence, from snapshotting to append-only file.
### Use Cases
- Caching
- Real-time analytics
- Session storage
- Message brokering
### Integration with Node.js and Express
To integrate Redis with Node.js and Express, you can use the `redis` library.
#### Example:
1. **Install Redis**:
```bash
npm install redis
```
2. **Connect to Redis**:
```javascript
const redis = require('redis');
const client = redis.createClient();
client.on('connect', () => {
console.log('Connected to Redis');
});
client.on('error', (err) => {
console.error('Error connecting to Redis', err);
});
```
3. **Create an Express Route**:
```javascript
const express = require('express');
const app = express();
app.use(express.json());
app.get('/cache', (req, res) => {
client.get('key', (err, value) => {
if (err) {
res.status(500).send(err);
return;
}
res.send(value);
});
});
app.listen(3000, () => {
console.log('Server is running on port 3000');
});
```
## Conclusion
Choosing the right database for your Node.js and Express application is crucial for its performance and scalability. MongoDB, MySQL, PostgreSQL, and Redis are among the most popular choices, each offering unique features and advantages. Understanding their strengths and how to integrate them into your project will help you build robust and efficient applications.
Feel free to experiment with these databases. | vyan |
1,882,597 | REST API, Stateless, and Stateful Backend, Postman | Old architecture New architecture An API (Application Programming... | 0 | 2024-06-10T05:12:51 | https://dev.to/swarnendu0123/rest-api-stateless-and-stateful-backend-cjg | # Old architecture
# New architecture
An **API (Application Programming Interface)** is a set of rules and tools that allows different software applications to communicate with each other. It defines the methods and data structures that applications use to request and exchange information. APIs are essential in software development because they enable the integration of different systems, allowing them to work together seamlessly.
A **REST API (Representational State Transfer Application Programming Interface)** is a set of rules and conventions for building and interacting with web services. REST APIs are designed to use standard HTTP methods, making them simple, stateless, and scalable.
## Data
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## Resources and URIs:
- Resources: Objects or entities that the API manages, such as users, posts, or products.
- URIs (Uniform Resource Identifiers): URLs that identify these resources. For example, /users might represent a collection of users.
## HTTP Methods:
- `GET`: Retrieve data from the server.
- `POST`: Submit data to the server to create a new resource.
- `PUT`: Update an existing resource.
- `DELETE`: Remove a resource.
- `PATCH`: Partially update a resource.
## Statelessness:
- Each request from a client to the server must contain all the information needed to understand and process the request. The server does not store any state about the client session.
## Representation:
- Resources can be represented in various formats, such as JSON, XML, or HTML. JSON is the most commonly used format.
## Endpoints:
Specific paths in the API where different operations can be performed on resources. For example:
- `GET /users` - Retrieve a list of users.
- `GET /users/123` - Retrieve a specific user by ID.
- `POST /users` - Create a new user.
- `PUT /users/123` - Update a specific user by ID.
- `DELETE /users/123` - Delete a specific user by ID.
## HTTP Status Codes:
Standard codes used to indicate the result of an API request, such as:
- `200 OK` - The request was successful.
- `201 Created` - A new resource was successfully created.
- `400 Bad Request` - The request was invalid.
- `401 Unauthorized` - Authentication is required.
- `404 Not Found` - The requested resource was not found.
- `500 Internal Server Error` - A server error occurred.
# Postman
**Postman** is a popular collaboration platform for API development. It simplifies the process of creating, testing, and documenting APIs, making it easier for developers to build and manage APIs effectively. Here are some of its key features and functionalities: | swarnendu0123 | |
1,882,595 | Stepping into a Wearable World: A Beginner's Guide to watchOS Development | The Apple Watch has revolutionized the way we interact with technology on the go. But beyond being a... | 0 | 2024-06-10T05:09:08 | https://dev.to/epakconsultant/stepping-into-a-wearable-world-a-beginners-guide-to-watchos-development-104g | The Apple Watch has revolutionized the way we interact with technology on the go. But beyond being a mere notification hub, the Apple Watch offers a unique platform for app development. If you're intrigued by the idea of creating software for your wrist, then watchOS development might be the perfect path for you. This article unpacks the core concepts and tools you'll need to embark on this exciting journey.
## Understanding watchOS: A Tailored Experience
Unlike iOS, watchOS is a distinct operating system specifically designed for the Apple Watch's unique form factor and capabilities. It prioritizes quick glances, intuitive interactions, and seamless integration with the iPhone. Here are some key characteristics of watchOS:
• Focus on Glances: watchOS apps are designed to deliver essential information at a glance, optimized for the watch's smaller screen. Think short summaries, actionable notifications, and quick access to key data points.
• Touch and Voice Interaction: Apps should cater to both touch input and voice commands via Siri. Consider intuitive tap and swipe gestures for basic navigation and leverage Siri for voice-driven interactions, especially for dictation or quick actions.
• Integration with iPhone: watchOS apps work best when paired with an iPhone. They often leverage the iPhone's processing power and internet connectivity while offering a convenient interface on the wrist.
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## Getting Started with watchOS Development
The good news is that Apple provides a robust set of tools and resources to streamline your watchOS development journey. Here's a basic roadmap:
1.Xcode and the SwiftUI Advantage: Xcode, Apple's integrated development environment (IDE), is your one-stop shop for building watchOS apps. Apple heavily promotes SwiftUI, a declarative user interface (UI) framework, for watchOS development. SwiftUI simplifies code and allows you to focus on app functionality and design.
2.Understanding App Extensions: watchOS apps often come in two parts: the Watch app and the WatchKit app extension. The Watch app resides on the watch itself, while the WatchKit extension runs on the paired iPhone, handling background tasks and data processing.
3.Interface Design for Small Screens: Since screen real estate is limited, designing intuitive and user-friendly interfaces is crucial. Apple offers WatchKit UI elements specifically designed for the watch, such as buttons, sliders, and pickers optimized for touch interaction.
4.Notifications and Glances: Leveraging notifications and Glances effectively is key to creating a valuable watchOS app. Notifications can deliver timely updates, while Glances offer essential information at a glance without requiring users to open the app itself.
## Essential Concepts and Technologies
As you delve deeper into watchOS development, you'll encounter some essential concepts and technologies:
• HealthKit: Integrate with HealthKit to access and utilize health and fitness data from the Apple Watch's sensors, allowing you to create health-focused apps for exercise, sleep tracking, or other wellness goals.
• Core Motion: Interact with the watch's motion sensors to enable features like gesture recognition or context-aware functionality based on the user's movement.
• WatchConnectivity: This framework facilitates communication between the Watch app and the WatchKit extension running on the iPhone, ensuring seamless data exchange and coordinated app behavior.
## The Future of watchOS Development: Beyond the Wrist
watchOS development is a rapidly evolving field with immense potential. As watch technology advances, we can expect even richer user experiences and deeper integration with other Apple devices. Here are some exciting possibilities:
• Standardized Communication Protocols: The ability for watchOS apps to interact with third-party devices and wearables could open doors for innovative cross-platform functionality.
• Augmented Reality Integration: Imagine using your watch for augmented reality experiences, overlaying digital information onto the real world through the watch's display.
• Advanced Health Monitoring: With ever-evolving sensor technology, watchOS apps could play a more significant role in health monitoring and disease prevention.
## Taking the First Step: Resources and Learning Paths
Apple provides comprehensive developer documentation and tutorials to get you started with watchOS development. Online communities and forums can offer invaluable peer support and learning opportunities. Consider taking online courses or attending workshops to accelerate your learning curve.
By understanding the core concepts, leveraging the right tools, and staying updated with the latest advancements, you can become a skilled watchOS developer and contribute to the ever-expanding world of wearable technology. So, put on your thinking cap, grab your Xcode, and get ready to create innovative apps that redefine the way we interact with the world on our wrists.
| epakconsultant | |
1,882,593 | Demystifying the Maze: A Beginner's Guide to Amazon's APIs | Amazon, the e-commerce behemoth, isn't just a platform for buying and selling goods. It also offers a... | 0 | 2024-06-10T05:05:50 | https://dev.to/epakconsultant/demystifying-the-maze-a-beginners-guide-to-amazons-apis-4lgo | amazon | Amazon, the e-commerce behemoth, isn't just a platform for buying and selling goods. It also offers a powerful suite of Application Programming Interfaces (APIs) that unlock a world of possibilities for developers. But what exactly are APIs, and how can Amazon's offerings benefit you? Let's delve into the fundamental concepts and explore the potential of Amazon's APIs.
## Understanding APIs: The Connective Tissue of the Web
APIs act as intermediaries between different applications. They provide a structured way for one software program to request and receive information from another. Imagine an API as a waiter in a restaurant – you (the developer) tell the waiter (the API) what you want (data or functionality) from the kitchen (the Amazon service), and the waiter brings it to you.
## Amazon's API Landscape: A Diverse Ecosystem
Amazon boasts a vast collection of APIs catering to various needs. Here are some of the most prominent categories:
• Product Information API: This API allows you to retrieve detailed product information like descriptions, prices, reviews, and images. This is perfect for building applications that compare prices, showcase product details, or integrate Amazon product listings into your own platform.
• Fulfillment by Amazon (FBA) API: If you're a seller leveraging Amazon's FBA service, this API empowers you to manage your inventory, track shipments, and monitor order fulfillment processes.
• Amazon Advertising API: This API empowers developers to manage advertising campaigns on Amazon's platform. You can automate bidding strategies, analyze campaign performance, and optimize ad placements for maximum reach.
• Payments API: The Payments API enables secure integration of Amazon Pay into your application. This allows users to pay for your services or products using their existing Amazon accounts, streamlining the checkout process.
• Amazon Marketplace Web Service (MWS): MWS acts as an umbrella term for a collection of APIs encompassing various functionalities like product listing, order management, and inventory control. It's a comprehensive suite for developers building complex e-commerce applications integrated with Amazon.
## Benefits of Utilizing Amazon's APIs
There are numerous advantages to incorporating Amazon's APIs into your development projects:
• Enhanced Functionality: APIs unlock a plethora of Amazon's functionalities within your applications, enriching the user experience.
• Scalability and Efficiency: APIs automate tasks and streamline processes, saving development time and resources.
• Reaching a Wider Audience: By integrating with Amazon, you gain access to its vast user base, potentially boosting your application's reach.
• Innovation and Opportunity: APIs open doors for creative solutions and innovative applications within the Amazon ecosystem.
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## Getting Started with Amazon's APIs
Amazon provides comprehensive documentation and tutorials to help developers get started with its APIs. Here's a basic roadmap:
1.Identify Your Needs: Determine which functionalities you want to integrate into your application. Choose the specific API(s) that best suit your requirements.
2.Create an Amazon Web Services (AWS) Account: Most Amazon APIs require an AWS account, which acts as your central hub for managing API access and credentials.
3.Explore Documentation and Tutorials: Amazon offers detailed documentation and code samples for its APIs. Utilize these resources to understand API calls, data structures, and authentication processes.
4.Obtain API Credentials: Generate API keys and tokens to grant your application access to Amazon's services.
5.Start Building and Testing: Integrate the API calls into your application code and rigorously test functionalities to ensure smooth operation.
## The Future of Amazon's APIs: A Collaborative Ecosystem
Amazon's API landscape is constantly evolving, offering developers even more powerful tools and functionalities. As the e-commerce giant expands its reach, we can expect even deeper integration possibilities, fostering a vibrant ecosystem of innovative applications built upon Amazon's infrastructure.
By grasping the basic concepts of Amazon's APIs and leveraging their potential, you can unlock a world of opportunities to build feature-rich applications and contribute to the ever-growing Amazon ecosystem.
| epakconsultant |
1,882,592 | The Benefits of Listing Your Home with a Real Estate Agent | Are you thinking about selling your home? The process can be overwhelming, from setting the right... | 0 | 2024-06-10T05:03:32 | https://dev.to/machik99/the-benefits-of-listing-your-home-with-a-real-estate-agent-281a | Are you thinking about selling your home? The process can be overwhelming, from setting the right price to navigating the paperwork. That's where a real estate agent comes in. Listing your home with a professional can make all the difference in achieving a smooth and profitable sale. Let's explore the key benefits of working with a real estate agent.
**Expert Market Knowledge**
One of the primary advantages of hiring a real estate agent is their deep understanding of the local market. Agents possess detailed knowledge of current market conditions, pricing trends, and buyer preferences. This expertise allows them to set a competitive and realistic price for your home, ensuring it attracts potential buyers without leaving money on the table. Their insights can help you avoid common pitfalls and make informed decisions throughout the selling process.
**Effective Marketing Strategies**
Real estate agents have access to a wide range of marketing tools and resources. They can create a comprehensive marketing plan tailored to your property, utilizing professional photography, virtual tours, and compelling listings on multiple platforms. Their network of contacts, including other agents and potential buyers, further amplifies your home's visibility. By leveraging these strategies, your home can reach a broader audience, increasing the chances of a quick and successful sale.
**Negotiation Skills**
Negotiating the sale of a home can be challenging, especially if you're emotionally attached to the property. Real estate agents act as intermediaries, handling negotiations on your behalf. Their experience in negotiating deals ensures that you get the best possible price and terms. They can navigate tricky situations, such as counteroffers and contingencies, with professionalism and tact. Having a skilled negotiator in your corner can make a significant difference in the outcome of your sale.
**Access to Qualified Buyers**
Real estate agents have access to a pool of pre-qualified buyers actively seeking properties. They can screen potential buyers, ensuring they are financially capable of purchasing your home. This saves you time and effort by filtering out unqualified leads. Additionally, agents often have connections with relocation companies, corporate clients, and other sources of serious buyers. This network can expedite the selling process and increase the likelihood of finding the right buyer quickly.
**Handling Paperwork and Legalities**
Selling a home involves a substantial amount of paperwork, from the initial listing agreement to the final closing documents. Real estate agents are well-versed in the legalities and documentation required for a smooth transaction. They can ensure that all necessary forms are completed accurately and submitted on time. This reduces the risk of errors, delays, or legal issues that could jeopardize the sale. By entrusting the paperwork to a professional, you can focus on other aspects of your move.
**Pricing Guidance**
Setting the right price for your home is crucial to attracting buyers and securing a sale. Real estate agents conduct thorough market analyses to determine the optimal listing price. They consider factors such as recent sales of comparable homes, the condition of your property, and current market conditions. Their objective perspective helps you avoid the pitfalls of overpricing or underpricing, both of which can negatively impact your sale. With an agent's guidance, you can price your home competitively and maximize its value.
**Professional Staging Advice**
First impressions matter when selling a home. Real estate agents can provide valuable advice on staging your property to make it more appealing to potential buyers. They can suggest minor repairs, decluttering tips, and interior design enhancements that can significantly improve your home's presentation. A well-staged home can create an emotional connection with buyers, making it easier for them to envision themselves living there. This can lead to quicker offers and potentially higher sale prices.
**Saving Time and Reducing Stress**
Selling a home is a time-consuming process that can be stressful, especially if you're juggling other responsibilities. Real estate agents handle the time-consuming tasks involved in selling, from marketing and showings to negotiations and paperwork. Their expertise streamlines the process, allowing you to focus on your daily life without the added burden of managing the sale. This reduces stress and ensures that your home is sold efficiently and effectively.
Listing your home with a real estate agent offers numerous benefits that can significantly enhance your selling experience. From expert market knowledge and effective marketing strategies to negotiation skills and handling legalities, a real estate agent provides invaluable support throughout the process. If you're considering selling your home, partnering with a professional can make all the difference in achieving a successful and stress-free sale. Whether you're navigating the market in New York or taking [real estate classes Norwich NY](https://corofy.com/pre-license-ny/real-estate-license-course-online-norwich-ny/), the expertise of a real estate agent is an asset you don't want to overlook. And if you're aspiring to become an agent yourself, consider obtaining your [New York real estate license online](https://corofy.com/new-york-real-estate-license-online/) to start your journey in this rewarding field.
| machik99 | |
1,882,587 | What are you building this week ? | A post by Méschac Irung | 0 | 2024-06-10T04:46:36 | https://dev.to/meschacirung/what-are-you-building-this-week--51m | webdev, discuss | meschacirung | |
1,882,591 | Scoring Steals on Amazon: Uncovering Deep Discounts and Potential Pricing Errors | For savvy shoppers, Amazon can be a treasure trove of deals. But beyond the occasional lightning deal... | 0 | 2024-06-10T05:02:02 | https://dev.to/epakconsultant/scoring-steals-on-amazon-uncovering-deep-discounts-and-potential-pricing-errors-4pi0 | amazon | For savvy shoppers, Amazon can be a treasure trove of deals. But beyond the occasional lightning deal or coupon code, there are hidden strategies to unearth heavily discounted items (50%-90% off) and even stumble upon potential pricing errors. Here's your guide to becoming an Amazon deal-hunting pro:
Discount Hunting Techniques:
• Amazon Warehouse: This hidden gem offers a treasure trove of pre-owned, used, and open-box items at significantly reduced prices. Products range from electronics and appliances to furniture and clothing, often with detailed descriptions of their condition. Don't be afraid to explore – some "like new" items offer incredible bargains.
• Discount Finder Tools: Several browser extensions and online tools like Keepa or CamelCamelCamel track Amazon product prices over time. These tools can alert you to significant price drops, allowing you to jump on deals before they vanish.
• Amazon Coupons Page: While it might seem obvious, many overlook the dedicated Amazon Coupons page. Here, you can browse through a categorized list of coupons offered directly by manufacturers or sellers. These coupons can be applied at checkout for instant savings.
• Limited-Time Deals: Keep an eye out for Amazon's special deals sections, such as "Today's Deals" or "Gold Box Deals." These sections showcase limited-time offers on various products, often featuring substantial discounts.
• Third-Party Seller Scrutiny: Many products on Amazon are listed by third-party sellers alongside Amazon itself. While convenient, it's crucial to compare prices. Third-party sellers might offer deep discounts to compete with Amazon's price.
• Seasonal Sales: Prime Day, Black Friday, and Cyber Monday are prime times to snag incredible deals on Amazon. Plan your purchases around these events to maximize savings.
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Unearthing Potential Pricing Errors:
While not always intentional, pricing errors can occasionally occur on Amazon. Here's how to spot them (remember, take advantage at your own risk, as Amazon may cancel the order):
• Price Inconsistencies: Compare the listed price with similar products. A significantly lower price might indicate an error.
• Mismatch Between Price and Description: Look for discrepancies between the product description (e.g., stating a higher price) and the actual listed price.
• Third-Party Seller Blunders: Third-party sellers are more prone to pricing errors. Look for deals that seem too good to be true, especially from new or low-rated sellers.
A Word of Caution:
While tempting, exploiting obvious pricing errors might lead to order cancellation. It's always best to stick to genuine deals and reputable sellers to ensure a smooth shopping experience.
Beyond Discounts: Building a Smart Shopping Strategy:
Finding deep discounts is exciting, but remember, the best deal is on an item you actually need. Here are some additional tips:
• Read Reviews: Before diving in, meticulously research the product. Reviews from verified buyers can highlight potential issues and ensure the product meets your expectations.
• Compare Specs and Prices: Don't be swayed solely by a discount. Compare features and specifications across different products to ensure you're getting the best value for your money.
• Factor in Additional Costs: Consider shipping costs and potential import fees when calculating the final price. Free shipping offers can significantly enhance the value proposition.
By combining these discount-hunting techniques with a strategic approach, you can transform yourself into a master Amazon deal finder. Remember, patience, research, and a keen eye will help you uncover incredible bargains and potentially score those elusive deeply discounted finds. Happy shopping!
| epakconsultant |
1,873,265 | Don’t Be a Hero. It's a Trap | If you want to stand out at work, don't be a hero. It's a trap. I've been there and done that. Yes,... | 27,567 | 2024-06-10T05:00:00 | https://dev.to/canro91/dont-be-a-hero-5gko | career, careerdevelopment, beginners | If you want to stand out at work, don't be a hero.
It's a trap. I've been there and done that.
Yes, I know. It feels sooo good at the end of the day when you're the one saving the day. But if you're the only one who can do something or knows how to do it, that makes you irreplaceable.
And being irreplaceable means being stuck.
Don't be a hero. A hero can't get sick, go on vacation, or be promoted. Instead, take every opportunity to teach, document, or automate what only you know or do.
I remember a friend telling me about Paul, one of our coworkers. He collapsed from exhaustion on the office floor after overworking for days. He was, by all definitions, a hero. He only needed the red cape and boots. He was the one who rescued everyone when we had a coding issue. But he ended up burning out and eventually leaving.
In movies, heroes always die. Don't be a hero. It's better to be one more player on the team.
Be a team member.
Are you a hero or have you ever wanted to be one?
***
_Hey, there! I'm Cesar, a software engineer and lifelong learner. Visit my [Gumroad page](https://imcsarag.gumroad.com) to download my ebooks and check my courses._
| canro91 |
1,881,244 | Elasticsearch APM Server Kurulumu ve Uygulama İzleme | İçindekiler Elasticsearch Nedir? Kibana Nedir? APM Nedir? Elasticsearch Kurulumu Kibana... | 0 | 2024-06-10T04:59:23 | https://dev.to/aciklab/elasticsearch-apm-server-kurulumu-ve-uygulama-izleme-17m0 | elasticsearch, kibana, apm, monitoring | # İçindekiler
- [Elasticsearch Nedir?](#elasticsearch-nedir)
- [Kibana Nedir?](#kibana-nedir)
- [APM Nedir?](#apm-nedir)
- [Elasticsearch Kurulumu](#elastic-search-kurulum)
- [Kibana Kurulumu ve Doğrulama Kodu Alma](#kibana-kurulumu-ve-doğrulama-kodu-alma)
- [APM Server Kurulumu](#apm-server-kurulumu)
- [Java APM Agent ile Spring Boot Uygulaması İzleme](#java-apm-agent-ile-spring-boot-uygulaması-izleme)
<h2 id="elasticsearch-nedir">Elasticsearch Nedir?</h2>
Elasticsearch, dağıtılmış, RESTful arama ve analiz motorudur. Büyük miktarda veriyi gerçek zamanlı olarak işleyebilir ve bu veriler üzerinde arama, analiz ve keşif yapılmasına olanak tanır. Açık kaynaklı olan bu platform, ölçeklenebilirlik ve hız açısından oldukça etkilidir.
<h2 id="kibana-nedir">Kibana Nedir?</h2>
Kibana, Elasticsearch veri kümelerini görselleştirmek ve yönetmek için kullanılan açık kaynaklı bir analiz ve görselleştirme platformudur. Kibana, kullanıcılara verileri grafiksel olarak inceleme, raporlama ve sorgulama yetenekleri sunar, böylece verilerden elde edilen içgörüler maksimize edilebilir.
<h2 id="apm-nedir">APM Nedir?</h2>
Application Performance Management (APM), uygulamaların performansını izlemek ve yönetmek için kullanılan bir teknolojidir. APM araçları, uygulamaların gerçek zamanlı performans metriklerini toplar, analiz eder ve bu bilgileri performansı iyileştirmek ve sorunları çözmek için kullanır.
<h2 id="elastic-search-kurulum">Elasticsearch Kurulumu</h2>
Elasticsearch'i Docker kullanarak kurmak için öncelikle aşağıdaki adımları izleyin:
###1. Network Oluşturma:
Docker'da konteynerlar arası iletişim için bir network oluşturun:
```bash
docker network create elastic
```
###2. Elasticsearch Konteynerini Başlatma:
Aşağıdaki komut ile Elasticsearch konteynerini başlatın. Bu komut, belirtilen sürümü kullanarak Elasticsearch'i başlatır ve 9200 portundan yayın yapmasını sağlar:
```bash
docker run --name elasticsearch --net elastic -p 9200:9200 -it -m 1GB docker.elastic.co/elasticsearch/elasticsearch:8.13.4
```
Konteyner başlatıldıktan sonra, güvenlik özelliklerinin otomatik olarak yapılandırıldığını ve gerekli bilgilerin loglarda görülebileceğini belirten bir mesaj alırsınız.
```bash
Elasticsearch security features have been automatically configured!
✅ Authentication is enabled and cluster connections are encrypted.
ℹ️ Password for the elastic user (reset with `bin/elasticsearch-reset-password -u elastic`):
nZPwrx7p32-Vfib1pP4w
ℹ️ HTTP CA certificate SHA-256 fingerprint:
6bab504d566749138d5faef454a67afe0449339e768ef9f626bc986d1f90b9d2
ℹ️ Configure Kibana to use this cluster:
• Run Kibana and click the configuration link in the terminal when Kibana starts.
• Copy the following enrollment token and paste it into Kibana in your browser (valid for the next 30 minutes):
eyJ2ZXIiOiI4LjEzLjQiLCJhZHIiOlsiMTkyLjE2OC4zMi4yOjkyMDAiXSwiZmdyIjoiNmJhYjUwNGQ1NjY3NDkxMzhkNWZhZWY0NTRhNjdhZmUwNDQ5MzM5ZTc2OGVmOWY2MjZiYzk4NmQxZjkwYjlkMiIsImtleSI6Im5UZUw0WThCbXphTUdXYlNDNEY4OldTdjFMaDFEU1BDc3piTkl3WFlENWcifQ==
ℹ️ Configure other nodes to join this cluster:
• Copy the following enrollment token and start new Elasticsearch nodes with `bin/elasticsearch --enrollment-token <token>` (valid for the next 30 minutes):
eyJ2ZXIiOiI4LjEzLjQiLCJhZHIiOlsiMTkyLjE2OC4zMi4yOjkyMDAiXSwiZmdyIjoiNmJhYjUwNGQ1NjY3NDkxMzhkNWZhZWY0NTRhNjdhZmUwNDQ5MzM5ZTc2OGVmOWY2MjZiYzk4NmQxZjkwYjlkMiIsImtleSI6Im56ZUw0WThCbXphTUdXYlNDNEdJOnBUUnFBQTNPUWNxNUE4X3laMW9yaGcifQ==
If you're running in Docker, copy the enrollment token and run:
`docker run -e "ENROLLMENT_TOKEN=<token>" docker.elastic.co/elasticsearch/elasticsearch:8.13.4`
```
Elasticsearch'in otomatik olarak oluşturduğu kullanıcı adı ve şifre, Kibana'yı ve diğer Elasticsearch düğümlerini bu klüstere bağlamak için kullanılacak kayıt anahtarları loglarda belirtilir.
###3. Elasticsearch Konteynerini Yeniden Başlatma:
Konteyneri interaktif moddan çıkarıp arkaplanda çalıştırın:
```bash
docker start elasticsearch
```
###4. Elasticsearch'e Erişim Sağlama:
Tarayıcınızda https://localhost:9200 adresine gidin ve kullanıcı adı ile şifrenizi girin. Bu bilgiler, Elasticsearch loglarında sağlanan güvenlik bilgileri arasında yer alır. Başarılı bir giriş sonrası, Elasticsearch cluster'ınızın aktif olduğunu görebilirsiniz.
<h2 id="kibana-kurulumu-ve-doğrulama-kodu-alma">Kibana Kurulumu ve Doğrulama Kodu Alma</h2>
Kibana'yı kurmak ve Elasticsearch cluster'ınıza bağlamak için aşağıdaki adımları takip edin:
###1. Kibana Konteynerini Başlatma:
```bash
docker run --name kibana --net elastic -p 5601:5601 -d docker.elastic.co/kibana/kibana:8.13.4
```
###2. Kibana'ya Bağlanma:
Tarayıcınızda localhost:5601 adresine gidin ve gerekli yerlere, Elasticsearch kurulumu sırasında loglarda verilen kayıt anahtarını girin.
###3. Doğrulama Kodunu Alma:
Kibana'nın başarılı bir şekilde yapılandırılması için doğrulama kodu gerekebilir. Bu kodu almak için:
- İlk olarak, Kibana konteynerine erişim sağlamak üzere aşağıdaki komutu kullanın:
```bash
docker exec -it kibana /bin/bash
```
- Konteyner içindeyken, doğrulama kodunu almak için şu komutu çalıştırın:
```bash
bin/kibana-verification-code
```
- Bu komut, Kibana'nın yapılandırılması sırasında gerekli olan doğrulama kodunu ekrana yazdıracaktır. Bu kodu kopyalayıp, Kibana kurulum ekranında istenen yere yapıştırarak devam edebilirsiniz.
###4. Kibana'ya Erişim Sağlama
Doğrulama kodunu girdikten sonra, Kibana arayüzüne tam erişim sağlanır.
<h2 id="apm-server-kurulumu">APM Server Kurulumu</h2>
APM Server'ı kurmak ve yapılandırmak için:
###1. APM Server Yapılandırma Dosyası Oluşturma:
Aşağıda örnek bir apm-server.yml yapılandırma dosyası bulunmaktadır. Bu dosyada APM Server'ın Elasticsearch ve Kibana ile nasıl haberleşeceği belirtilmiştir:
> _Önemli Not: hosts, username, password, ve setup.kibana.host gibi gerekli kısımları kendi ortamınıza göre güncellemeniz gerekmektedir._
```bash
apm-server:
host: "0.0.0.0:8200"
concurrent_requests: 5
rum:
enabled: true
queue.mem.events: 4096
max_procs: 4
output.elasticsearch:
hosts: ["https://elasticsearch:9200"]
username: "elastic"
password: "2Bm-FImtZ=EV4=O62LIA"
ssl.verification_mode: none
setup.kibana.host: "kibana:5601"
setup.dashboards.enabled: true
setup.template.settings.index.number_of_replicas: 0
apm-server.kibana.enabled: true
apm-server.kibana.host: "kibana:5601"
#logging.level: info
#logging.to_files: false
logging.level: debug
logging.to_files: false
```
###2. APM Server Konteynerini Başlatma:
Yapılandırma dosyanızın dizinine göre, aşağıdaki komutla APM Server konteynerini başlatın:
> _Önemli Not: Aşağıdaki komutta /home/db/elk/apm-server.yml yolunu, apm-server.yml dosyanızın bulunduğu dizine göre güncellemeniz gerekmektedir._
```bash
docker run -d \
-p 8200:8200 \
--name=apm-server \
--net=elastic \
--user=apm-server \
--volume="/home/db/elk/apm-server.yml:/usr/share/apm-server/apm-server.yml:ro" \
docker.elastic.co/apm/apm-server:8.13.4
```
Konteyner başlatıldıktan sonra, Docker'da çalışan tüm konteynerleri görmek için aşağıdaki komutu kullanabilirsiniz.
```bash
java@java:~/elk$ docker ps
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
1cfad7834915 docker.elastic.co/apm/apm-server:8.13.4 "/usr/bin/tini -- /u…" 35 minutes ago Up 35 minutes 0.0.0.0:8200->8200/tcp, :::8200->8200/tcp apm-server
a7186673415b docker.elastic.co/kibana/kibana:8.13.4 "/bin/tini -- /usr/l…" 2 hours ago Up 2 hours 0.0.0.0:5601->5601/tcp, :::5601->5601/tcp kibana
3b4e4edd0712 docker.elastic.co/elasticsearch/elasticsearch:8.13.4 "/bin/tini -- /usr/l…" 2 hours ago Up 2 hours 0.0.0.0:9200->9200/tcp, :::9200->9200/tcp, 9300/tcp elasticsearch
```
<h2 id="java-apm-agent-ile-spring-boot-uygulaması-izleme">Java APM Agent ile Spring Boot Uygulaması İzleme</h2>
###1. APM Agent İndirme:
Java APM Agent'ı Elastic'in resmi web sitesinden indirin. Agent, uygulamanızın performans metriklerini toplayacak ve Elastic APM sunucusuna gönderecektir.
###2. Java Uygulamasını Agent ile Başlatma:
Java Virtual Machine (JVM) üzerinde çalışan uygulamanıza agent'ı eklemek için aşağıdaki komutu kullanın:
> _Önemli Not: -Delastic.apm.server_url=`http://<your-apm-server-url>:8200` parametresinde, `<your-apm-server-url>` kısmını kendi APM Server URL'inize göre güncelleyin._
```bash
java -javaagent:/home/db/elastic-apm-agent-1.50.0.jar \
-Delastic.apm.service_name=java-apm \
-Delastic.apm.server_url=http://<your-apm-server-url>:8200 \
-Delastic.apm.application_packages=com.teksen \
-Delastic.apm.disable_bootstrap_checks=true \
-jar otel-demo-1.jar
```
Bu komutta belirtilen parametreler:
- `elastic.apm.service_name`: Uygulamanızın APM'de görünecek ismi.
- `elastic.apm.server_url`: APM Server'ın URL adresi.
- `elastic.apm.application_packages`: İzlenmesi gereken Java paketleri.
- `jar`: Çalıştırılacak Java uygulaması.
###3. Kibana Üzerinden Uygulamayı İzleme:
APM Agent tarafından toplanan veriler, APM Server üzerinden Kibana'ya iletilir. Kibana'da APM > Services sekmesine giderek uygulamanızın performans metriklerini görselleştirebilir ve analiz edebilirsiniz.
# Sonuç
Bu kılavuz, Elasticsearch, Kibana ve APM Server'ın Docker üzerinde kurulum ve yapılandırmasını adım adım ele alır. Bu araçlar, uygulama performansını izlemek ve operasyonel verimliliği artırmak için esastır. Kurulumdan sonra, Java ile Spring Boot uygulamasının performans izlemesi sağlanmış ve bu süreçlerin nasıl yönetileceği gösterilmiştir. Elastic Stack teknolojilerinin etkin kullanımı, modern uygulama yönetiminde kritik bir rol oynar.
| erenalpteksen |
1,882,590 | Unveiling the Voice: A Look at the Fundamentals of OpenAI TTS API | OpenAI's Text-To-Speech (TTS) API is a revolutionary tool that empowers developers to transform... | 0 | 2024-06-10T04:57:33 | https://dev.to/epakconsultant/unveiling-the-voice-a-look-at-the-fundamentals-of-openai-tts-api-gje | openai | OpenAI's Text-To-Speech (TTS) API is a revolutionary tool that empowers developers to transform written text into natural-sounding spoken language. This technology holds immense potential for various applications, from enhancing accessibility features to creating lifelike voiceovers. But how exactly does this API work, and what are its core functionalities? Let's delve into the fundamental concepts of OpenAI TTS.
## Understanding Text-to-Speech Technology
At its core, TTS systems translate written text into a sequence of instructions that a computer can use to generate speech. Traditionally, this involved complex algorithms analyzing the text's phonetics and constructing a synthetic voice that often sounded robotic or unnatural.
## OpenAI's Approach: Deep Learning for Natural Speech
OpenAI's TTS API leverages the power of deep learning, a form of artificial intelligence (AI) inspired by the structure and function of the human brain. This approach involves training massive neural networks on vast amounts of audio data, allowing them to learn the intricate patterns and nuances of human speech.
Key Components of the OpenAI TTS API
1.Text Input: The API accepts written text as input, ensuring flexibility for various applications. You can provide text paragraphs, scripts, or even single sentences for conversion into spoken language.
2.Voice Selection: OpenAI offers a set of pre-trained voices with different characteristics, allowing you to tailor the audio output to your specific needs. These voices can range from young and energetic to mature and authoritative.
3.Model Selection: The API provides two model options:
tts-1: Optimized for real-time applications, this model prioritizes speed and efficiency, ideal for situations where immediate audio generation is crucial.
tts-1-hd: Focused on delivering the highest quality audio possible, this model is perfect for pre-recorded content or scenarios demanding a more natural and polished sound.
4.Audio Output: The API generates audio files in a commonly used format, such as WAV, allowing for easy integration into various software applications and media players.
5.Customization Options: While limited, the API offers some basic controls for customizing the generated speech. You can potentially adjust the speaking rate or add emphasis to specific words.
Benefits of Using OpenAI TTS API
• Natural-sounding Speech: Compared to traditional TTS systems, OpenAI's API produces significantly more natural and human-like speech, enhancing the user experience.
• Real-time and High-Quality Options: With two model choices, the API caters to both real-time applications and scenarios requiring the highest audio fidelity.
• Ease of Use: The API offers a simple and well-documented interface, allowing developers of all experience levels to integrate Text-to-Speech functionality into their projects.
Applications of OpenAI TTS API
The potential applications of OpenAI TTS API are vast and ever-expanding. Here are a few examples:
• Accessibility Tools: This technology can assist visually impaired users by converting written content like ebooks or webpages into spoken audio.
• Educational Content Creation: Educational materials can be enhanced with interactive audio elements, making learning more engaging for students.
• E-learning Platforms: TTS can be used to create voice-guided tutorials or narrated presentations within online learning platforms.
• Voice User Interfaces (VUIs): Smart speakers and virtual assistants can leverage TTS to provide natural-sounding responses to user queries.
• Content Creation: Authors and filmmakers can use TTS to create narrated versions of their work or generate voiceovers for video content.
[Pinescript: multi-timeframe indicators in trading view: Learn Pinescript and Muti-timeframe analysis](https://www.amazon.com/dp/B0CGXXCCHD)
## The Future of OpenAI TTS and Beyond
OpenAI TTS API represents a significant leap forward in Text-to-Speech technology. With ongoing advancements in deep learning, we can expect even more natural and expressive speech generation capabilities in the future. As the technology matures and becomes more readily accessible, its applications will undoubtedly continue to grow, shaping the way we interact with information and the world around us.
| epakconsultant |
1,882,588 | The Power of Visual Studio: A Match Made in Developer Heaven | Visual Studio acts as the primary development environment for .NET. This intuitive IDE offers... | 0 | 2024-06-10T04:49:40 | https://dev.to/akaksha/the-power-of-visual-studio-a-match-made-in-developer-heaven-1cjm | development, developers, netdevelopers | Visual Studio acts as the primary development environment for .NET. This intuitive IDE offers excellent code editing, debugging, and testing tools, making the development process smoother and more efficient.
The [.NET Framework's](https://www.clariontech.com/blog/top-5-things-you-should-know-about-.net-framework) rich library ecosystem empowers you to build robust and efficient applications. By leveraging pre-built, well-tested code components, you can accelerate development, improve code quality, and focus on the unique aspects of your application. So, delve into the treasure trove of .NET libraries and unlock a world of possibilities for your next development project. | akaksha |
1,882,586 | TypeScript Interfaces: Crafting Code with Creative Precision | Hello everyone, السلام عليكم و رحمة الله و بركاته In TypeScript, interfaces play a crucial role in... | 0 | 2024-06-10T04:45:44 | https://dev.to/bilelsalemdev/typescript-interfaces-crafting-code-with-creative-precision-65m | typescript, solid, oop, programming | Hello everyone, السلام عليكم و رحمة الله و بركاته
In TypeScript, interfaces play a crucial role in defining the shape of objects and providing a contract for their behavior. They allow us to enforce consistency and ensure that our code adheres to a specific structure. Let's explore deeply what interfaces are.
## Table of Contents
- [Introduction to Interfaces](#introduction-to-interfaces)
- [Creating Interfaces](#creating-interfaces)
- [Optional Properties](#optional-properties)
- [Readonly Properties](#readonly-properties)
- [Extending Interfaces](#extending-interfaces)
- [Implementing Interfaces](#implementing-interfaces)
- [Private Properties](#private-properties)
- [Conclusion](#conclusion)
## Introduction to Interfaces
I will take a real world example to explain what interfaces are. Let's say you are building a car. You have a blueprint that defines the structure of the car, such as the number of wheels, the color, the model, etc. This blueprint is like an interface in TypeScript. It defines the shape of an object and enforces certain properties that the object must have.
## Creating Interfaces
To create an interface in TypeScript, you use the `interface` keyword followed by the name of the interface and the properties it should have. An example of an interface that defines the structure of a `User` object would be great to understand this concept:
```typescript
interface User {
id: number;
name: string;
email: string;
age: number;
}
let user: User = {
id: 1,
name: "Bilel salem",
email: "bilelsalemdev@gmail.com",
age: 23,
};
```
## Optional Properties
if your `user` object has this code :
```typescript
let user: User = {
id: 1,
name: "Bilel salem",
email: "bilelsalemdev@gmail.com",
};
```
It will throw an error because the `age` property is missing. So what if I have in my database some users that don't have an age? This is where optional properties come in. You can make a property optional by adding a `?` after the property name `age` in the interface definition:
```typescript
interface User {
id: number;
name: string;
email: string;
age?: number;
}
```
Now, the `age` property is optional, and you can create a `user` object without it:
```typescript
let user: User = {
id: 1,
name: "Bilel salem",
email: "bilelsalemdev@gmail.com",
};
```
This will not throw an error because the `age` property is optional.
## Readonly Properties
Sometimes, you may want to create an object with properties that cannot be changed after they are set. As an example, let's say you have a `Car` interface with a `model` property that should not be changed once it is set. If you try to change the `model` property after it is set like this:
```typescript
interface Car {
model: string;
}
let car: Car = { model: "BMW" };
car.model = "Audi";
```
this will be correct in TypeScript, but what if you want to prevent this from happening? You can make a property readonly by adding the `readonly` keyword before the property name in the interface definition:
```typescript
interface Car {
readonly model: string;
}
let car: Car = { model: "BMW" };
car.model = "Audi"; // Error: Cannot assign to 'model' because it is a read-only property.
```
Now, if you try to change the `model` property after it is set, TypeScript will throw an error.
## Extending Interfaces
Interfaces can be extended to create new interfaces that inherit the properties of existing interfaces. This is useful when you want to define a new interface that has all the properties of an existing interface, plus some additional properties. Here's an example of extending an interface:
```typescript
interface User {
id: number;
name: string;
email: string;
}
interface UserWithAge extends User {
age: number;
}
let user: User = {
id: 1,
name: "Bilel salem",
email: "bilelsalemdev@gmail.com",
};
let userWithAge: UserWithAge = {
id: 1,
name: "Bilel salem",
email: "bilelsalemdev@gamail.com",
age: 23,
};
```
## Implementing Interfaces
Now that you know how to create interfaces, you can use them to enforce a contract on classes. When a class implements an interface, it must provide an implementation for all the properties and methods defined in the interface. Here's an example of implementing an interface `User` in a class `UserImpl`:
```typescript
interface User {
id: number;
name: string;
email: string;
}
class UserImpl implements User {
id: number;
name: string;
email: string;
constructor(id: number, name: string, email: string) {
this.id = id;
this.name = name;
this.email = email;
}
}
class WrongUserImpl implements User {
id: number;
name: string;
email: string;
constructor(id: number, name: string) {
this.id = id;
this.name = name;
}
}
// Error: Class 'WrongUserImpl' incorrectly implements interface 'User'. Property 'email' is missing in type 'WrongUserImpl' but required in type 'User'.
```
In this example, the `UserImpl` class implements the `User` interface by providing an implementation for the `id`, `name`, and `email` properties. If you try to create a class that implements the `User` interface but does not provide an implementation for all the required properties, TypeScript will throw an error.
## Private Properties
Now that you know how to enforce the classes to behave as you want, you can also enforce the access level of the properties. If you want to remove the access to age property from the user object, you can use the `private` keyword before the property name in the interface definition:
```typescript
interface User {
id: number;
name: string;
email: string;
age: number;
}
class UserImpl implements User {
id: number;
name: string;
email: string;
private _age: number;
constructor(id: number, name: string, email: string, age: number) {
this.id = id;
this.name = name;
this.email = email;
this._age = age;
}
}
let user: User = new UserImpl(1, "Bilel salem", "bilelsalemdev#gmail.com", 23);
console.log(user.age);
// Error: Property 'age' is private and only accessible within class 'UserImpl'.
```
So what if you want to access the age property? You can create a getter method in the class to access the private property:
```typescript
interface User {
id: number;
name: string;
email: string;
age: number;
}
class UserImpl implements User {
id: number;
name: string;
email: string;
private _age: number;
constructor(id: number, name: string, email: string, age: number) {
this.id = id;
this.name = name;
this.email = email;
this._age = age;
}
get age(): number {
return this._age;
}
}
let user: User = new UserImpl(1, "Bilel salem", "bilelsalemdev@gmail.com", 23);
console.log(user.age); // 23
```
## Conclusion
Interfaces are a powerful feature of TypeScript that allow you to define the shape of objects and enforce a contract on their behavior. They provide a way to ensure consistency and type safety in your code, making it easier to catch errors.
| bilelsalemdev |
1,882,585 | How I Built My Portfolio Using NextJS and MDX | Last year, I was inspired by amazing developers like Josh W Comeau and Kent C Dodds. I decided to... | 0 | 2024-06-10T04:42:10 | https://dev.to/beginarjun/how-i-built-my-portfolio-using-nextjs-and-mdx-168a | webdev, nextjs, howto, tutorial | Last year, I was inspired by amazing developers like [Josh W Comeau](https://joshwcomeau.com/) and [Kent C Dodds](https://kentcdodds.com/). I decided to make my own portfolio website with a blog to learn in the open and share my journey with the community. You can check it out [here](https://beginarjun.vercel.app)
## Table of Contents
- [Inspiration and Initial Research](#inspiration-and-initial-research)
- [Choosing Next.js and MDX](#choosing-nextjs-and-mdx)
- [Setting Up the Project](#setting-up-the-project)
- [Challenges with the Next.js App Router](#challenges-with-the-nextjs-app-router)
- [Styling MDX Content](#styling-mdx-content)
- [Using TailwindCSS and Tailwind Typography](#using-tailwindcss-and-tailwind-typography)
- [Implementing Page Views with Redis](#implementing-page-views-with-redis)
- [Taking a Break](#taking-a-break)
- [Back with More Experience](#back-with-more-experience)
- [Current State and Future Plans](#current-state-and-future-plans)
## Inspiration and Initial Research
Seeing how developers like [Josh W Comeau](https://www.joshwcomeau.com/) and [Kent C. Dodds](https://www.kentcdodds.com) shared their knowledge and projects,
I felt motivated to create something similar.
I wanted a platform where I could document my learning process and projects.
A blog integrated into my portfolio seemed like the perfect idea.
## Choosing Next.js and MDX
After some research, I decided to use Next.js for its flexibility and performance.
For the blog, I chose MDX because it allowed me to write JSX in Markdown, giving me the power to create interactive content. I opted for `next-mdx-remote` for MDX compilation.
## Setting Up the Project
Here's a step-by-step guide on setting up a Next.js project with MDX, TailwindCSS, and other packages.
### Initialize Next.js Project
First, we need to create a new Next.js project:
```bash
npx create-next-app@latest my-portfolio
cd my-portfolio
```
### Install Dependencies
Next, we install the necessary dependencies:
```bash
npm install @next/mdx next-mdx-remote tailwindcss @tailwindcss/typography sugar-high redis
```
### Setup TailwindCSS
To set up TailwindCSS, follow these steps:
#### Initialize TailwindCSS:
```bash
npx tailwindcss init -p
```
#### Configure TailwindCSS:
Update tailwind.config.js:
```js
module.exports = {
content: ['./pages/**/*.{js,ts,jsx,tsx}', './components/**/*.{js,ts,jsx,tsx}', './posts/**/*.{md,mdx}'],
theme: {
extend: {},
},
plugins: [require('@tailwindcss/typography')],
};
```
##### Add Tailwind Directives:
Update styles/globals.css:
```css
@tailwind base;
@tailwind components;
@tailwind utilities;
```
### Configure MDX with next-mdx-remote
To set up MDX, create a lib/mdx.js file:
```js
import fs from 'fs';
import path from 'path';
import matter from 'gray-matter';
import { serialize } from 'next-mdx-remote/serialize';
const postsDirectory = path.join(process.cwd(), 'posts');
export function getSortedPostsData() {
const fileNames = fs.readdirSync(postsDirectory);
const allPostsData = fileNames.map(fileName => {
const id = fileName.replace(/\.mdx$/, '');
const fullPath = path.join(postsDirectory, fileName);
const fileContents = fs.readFileSync(fullPath, 'utf8');
const matterResult = matter(fileContents);
return {
id,
...matterResult.data
};
});
return allPostsData.sort((a, b) => (a.date < b.date ? 1 : -1));
}
export async function getPostData(id) {
const fullPath = path.join(postsDirectory, `${id}.mdx`);
const fileContents = fs.readFileSync(fullPath, 'utf8');
const matterResult = matter(fileContents);
const mdxSource = await serialize(fileContents);
return {
id,
mdxSource,
...matterResult.data
};
}
```
### Create Blog Page
Create a `pages/blog/[id].js` file:
```js
import { getPostData, getSortedPostsData } from '../../lib/mdx';
import { MDXRemote } from 'next-mdx-remote';
import Link from 'next/link';
export default function Post({ postData }) {
return (
<article className="prose lg:prose-xl mx-auto">
<h1>{postData.title}</h1>
<MDXRemote {...postData.mdxSource} />
<Link href="/blog">← Back to Blog</Link>
</article>
);
}
export async function getStaticPaths() {
const paths = getSortedPostsData().map(post => ({
params: { id: post.id }
}));
return { paths, fallback: false };
}
export async function getStaticProps({ params }) {
const postData = await getPostData(params.id);
return {
props: {
postData
}
};
}
```
### Challenges with the Next.js App Router
Back then, the Next.js App Router was still new, and many packages hadn't been updated to work with it. I faced numerous issues and spent a lot of time on the next-mdx-remote GitHub repo discussing with the community. Eventually,
I discovered they had a different implementation for the App Router's **React Server Components** _(RSC)_.
#### Styling MDX Content
Creating a blog page was a significant achievement, but styling the MDX content turned out to be tricky. As a newcomer, I found it challenging to make the content look good. After struggling for a while, I decided to pause the project because I needed to focus on my summer project for college.
### Using TailwindCSS and Tailwind Typography
TailwindCSS and the Tailwind Typography plugin made styling much easier. By adding prose classes to my blog content, I could quickly achieve a clean and professional look.
For example, wrapping the MDX content with `<article className="prose lg:prose-xl mx-auto">` applied beautiful default styles to all text elements.
### Implementing Page Views with Redis
To track page views, I used the sugar-high npm package with Redis. Here's a basic implementation:
Install Redis
Ensure Redis is installed and running on your machine. For the setup, I used Docker:
```bash
docker run --name redis -d -p 6379:6379 redis
```
Create a `lib/redis.js` file:
```js
import Redis from 'ioredis';
const redis = new Redis(process.env.REDIS_URL);
export default redis;
```
In your API route (e.g., `api/view/route.ts`), set up the endpoint to count views:
```js
import redis from '../../lib/redis';
import {NextRequest, NextResponse} from 'next';
export default async function POST(req : NextRequest, res : NextResponse) {
const { id } = req.query;
const ip = req.headers['x-real-ip'] || req.connection.remoteAddress;
const hasVisited = await redis.sismember(`views:${id}`, ip);
if (!hasVisited) {
await redis.sadd(`views:${id}`, ip);
await redis.incr(`views-count:${id}`);
}
const views = await redis.get(`views-count:${id}`);
res.json({ views },{staus : 200});
}
```
On the client side, you can fetch and display the views:
```js
import { useEffect, useState } from 'react';
export default function PageViews({ id }) {
const [views, setViews] = useState(0);
useEffect(() => {
fetch(`/api/views?id=${id}`)
.then(response => response.json())
.then(data => setViews(data.views));
}, [id]);
return <p>{views} views</p>;
}
```
### Taking a Break
During the break, I continued working with Next.js on various projects, including a cool project called LinkME, you can learn more about it [here](https://beginarjun.vercel.app/projects/linkme). This experience gave me a lot more confidence and knowledge.
### Back with More Experience
With the additional experience, I felt ready to tackle my portfolio website again. I decided to rebuild it from scratch. This time, everything went much smoother. Although it's not finished yet, I'm developing it iteratively based on feedback.
### Current State and Future Plans
The portfolio now includes a Project Page where I post about the projects I've completed. While there's still a lot to do, I'm happy with the progress and look forward to improving it over time.
Thanks for reading about my journey in building my portfolio website. Stay tuned for more updates! | beginarjun |
1,882,583 | A single API for all your conversational generative AI applications | Use the Converse API in Amazon Bedrock to create generative AI applications using single API across... | 0 | 2024-06-10T04:38:52 | https://community.aws/content/2hP2HKfF83IHf0N5VIdfX1G7Ekl/a-single-api-for-all-your-conversational-generative-ai-applications | go, machinelearning, programming, cloud | *Use the Converse API in Amazon Bedrock to create generative AI applications using single API across multiple foundation models*
You can now use the [**Converse API**](https://docs.aws.amazon.com/bedrock/latest/userguide/conversation-inference.html) in Amazon Bedrock to create conversational applications like chatbots and support assistants. It is a consistent, **unified** API that works with all Amazon Bedrock models that support messages. The benefit is that you have a single code-base (application) and use it with different models – this makes it preferable to use the `Converse` API over [InvokeModel](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/bedrockruntime#Client.InvokeModel) (or [InvokeModelWithResponseStream](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/bedrockruntime#Client.InvokeModelWithResponseStream)) APIs.
I will walk you through how to use this API with the [AWS SDK for Go v2](https://aws.github.io/aws-sdk-go-v2/docs/).
## Converse API overview
Here is a super-high level overview of the API - you will see these in action when we go through some of the examples.
- The API consists of two operations - `Converse` and `ConverseStream`
- The conversations are in the form of a `Message` object, which are encapsulated in a `ContentBlock`.
- A `ContentBlock` can also have images, which are represented by an `ImageBlock`.
- A message can have one of two roles - `user` or `assistant`
- For streaming response, use the `ConverseStream` API
- The streaming output (`ConverseStreamOutput`) has multiple events, each of which has different response items such as the text output, metadata etc.
Let's explore a few sample apps now.
## Basic example
*Refer to **Before You Begin** section in [this blog post](https://community.aws/concepts/amazon-bedrock-golang-getting-started#before-you-begin) to complete the prerequisites for running the examples. This includes installing Go, configuring Amazon Bedrock access and providing necessary IAM permissions.*
Let's start off with a simple example. You can refer to the [complete code here](https://github.com/abhirockzz/converse-api-bedrock-go/blob/master/basic/main.go).
To run the example:
```shell
git clone https://github.com/abhirockzz/converse-api-bedrock-go
cd converse-api-bedrock-go
go run basic/main.go
```
The response may be different in your case:
The crux of the app is a `for` loop in which:
- A [types.Message](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/bedrockruntime/types#Message) instance is created with the appropriate role (`user` or `assistant`)
- Sent using the `Converse` API
- The response is collected and added to existing list of messages
- The conversation continues, until the app is exited
```go
//...
for {
fmt.Print("\nEnter your message: ")
input, _ := reader.ReadString('\n')
input = strings.TrimSpace(input)
userMsg := types.Message{
Role: types.ConversationRoleUser,
Content: []types.ContentBlock{
&types.ContentBlockMemberText{
Value: input,
},
},
}
converseInput.Messages = append(converseInput.Messages, userMsg)
output, err := brc.Converse(context.Background(), converseInput)
if err != nil {
log.Fatal(err)
}
reponse, _ := output.Output.(*types.ConverseOutputMemberMessage)
responseContentBlock := reponse.Value.Content[0]
text, _ := responseContentBlock.(*types.ContentBlockMemberText)
fmt.Println(text.Value)
assistantMsg := types.Message{
Role: types.ConversationRoleAssistant,
Content: reponse.Value.Content,
}
converseInput.Messages = append(converseInput.Messages, assistantMsg)
}
//...
```
I used the Claude Sonnet model in the example. Refer to[ Supported models and model features](https://docs.aws.amazon.com/bedrock/latest/userguide/conversation-inference.html) for a complete list.
## Multi-modal conversations: Combine image and text
You can also use the `Converse` API to build multi-modal application that work images - note that they only return text, for now.
You can refer to the [complete code here](https://github.com/abhirockzz/converse-api-bedrock-go/blob/master/multi-modal-chat/main.go).
To run the example:
```shell
go run multi-modal-chat/main.go
```
I used the [following picture of pizza](https://images.pexels.com/photos/1566837/pexels-photo-1566837.jpeg?auto=compress&cs=tinysrgb&w=1260&h=750&dpr=2) and asked *"what's in the image?"*:
Here is the output:
The is a simple single-turn exchange, but feel free to continue using a combination of images and text to continue the conversation.
The conversation for loop is similar to the previous example, but it has an added benefit of using the image data type with the help of [types.ImageBlock](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/bedrockruntime/types#ImageBlock):
```go
//...
types.ContentBlockMemberImage{
Value: types.ImageBlock{
Format: types.ImageFormatJpeg,
Source: &types.ImageSourceMemberBytes{
Value: imageContents,
},
},
}
//...
```
***Note: **`imageContents` is nothing but a `[]byte` representation of the image.*
## Streaming chat
Streaming provide a better user experience because the client application does not need to wait for the complete response to be generated for it start showing up in the conversation.
You can refer to the [complete code here](https://github.com/abhirockzz/converse-api-bedrock-go/blob/master/chat-streaming/main.go).
To run the example:
```shell
go run chat-streaming/main.go
```
Streaming based implementations can be a bit complicated. But in this case, it was simplified due to the clear API abstractions that the Converse API provided, including partial response types such as [types.ContentBlockDeltaMemberText](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/bedrockruntime/types#ContentBlockDeltaMemberText).
The application invokes [ConverseStream](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/bedrockruntime#Client.ConverseStream) API and then processes the output components in [bedrockruntime.ConverseStreamOutput](https://pkg.go.dev/github.com/aws/aws-sdk-go-v2/service/bedrockruntime#ConverseStreamOutput).
```go
func processStreamingOutput(output *bedrockruntime.ConverseStreamOutput, handler StreamingOutputHandler) (types.Message, error) {
var combinedResult string
msg := types.Message{}
for event := range output.GetStream().Events() {
switch v := event.(type) {
case *types.ConverseStreamOutputMemberMessageStart:
msg.Role = v.Value.Role
case *types.ConverseStreamOutputMemberContentBlockDelta:
textResponse := v.Value.Delta.(*types.ContentBlockDeltaMemberText)
handler(context.Background(), textResponse.Value)
combinedResult = combinedResult + textResponse.Value
case *types.UnknownUnionMember:
fmt.Println("unknown tag:", v.Tag)
}
}
msg.Content = append(msg.Content,
&types.ContentBlockMemberText{
Value: combinedResult,
},
)
return msg, nil
}
```
## Wrap up
There are a few other awesome things the `Converse` API does to make your life easier.
- It allows you to [pass inference parameters](https://docs.aws.amazon.com/bedrock/latest/userguide/conversation-inference.html#conversation-inference-call) specific to a model.
- You can also use the `Converse` API to [implement tool use in your applications](https://docs.aws.amazon.com/bedrock/latest/userguide/tool-use.html).
- If you are using Mistral AI or Llama 2 Chat models, the `Converse` API will embed your input in a model-specific prompt template that enables conversations - one less thing to worry about!
Like I always say, Python does **not** have to be the only way to build generative AI powered machine learning applications. As an AI engineer, choose the right tools (including foundation models) and programming languages for your solutions. I maybe biased towards Go but this applies equally well to Java, JS/TS, C# etc.
Happy building! | abhirockzz |
1,882,582 | packageoidc the dartflutter authentication package you didnt know you needed in Flutter News 2024 #23 ʚїɞ | Hey Flutter enthusiasts! Ever worry about missing key Flutter updates? Well, worry no... | 26,008 | 2024-06-10T04:36:33 | https://dev.to/lucianojung/packageoidc-the-dartflutter-authentication-package-you-didnt-know-you-needed-in-flutter-news-2024-23-eyie-54k | 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 not post any new Videos this week!
---
## New Flutter-Packages
{% details [runner](https://pub.dev/packages/runner) (Version 1.0.2) %} OpenCI"s CLI
\#args, #cli_completion, #dart_firebase_admin, #dart_frog, #dart_jsonwebtoken, #dartssh2, #dotenv, #freezed_annotation, #github, #google_play_api_kit, #googleapis, #googleapis_auth, #http, #json_annotation, #mason_logger, #openci_models, #process_run, #pub_updater, #sentry, #uuid {% enddetails %}
{% details [alice_dio](https://pub.dev/packages/alice_dio) (Version 1.0.2) %} Alice + Dio integration. It contains plugin for Alice which allows to use Dio package.
\#alice, #dio {% enddetails %}
{% details [nullx](https://pub.dev/packages/nullx) (Version 0.1.4) %} nullx is a simple package that enhances handling of nullable types, null-checking etc.
\#Apache-2.0 (LICENSE) {% enddetails %}
{% details [flutter_floaty](https://pub.dev/packages/flutter_floaty) (Version 0.1.10) %} This plugin provides a customizable Floating button to drag on screen in flutter. This package is light and easy to use
\#MIT (LICENSE) {% enddetails %}
{% details [advanced_media_picker](https://pub.dev/packages/advanced_media_picker) (Version 0.0.5) %} This plugin displays a gallery with user"s Albums and Photos with ability to take photo and video.
\#camera, #collection, #cross_file, #file_picker, #flutter, #flutter_sticky_header, #photo_manager, #photo_manager_image_provider, #video_thumbnail {% enddetails %}
---
### New Dev-Posts
{% embed https://dev.to/almatins/how-to-add-states-functionality-inside-flutter-showdialog-function-2245 %}
{% embed https://dev.to/syncfusion/open-and-save-pdf-files-locally-in-flutter-h86 %}
{% embed https://dev.to/apptagsolution/mastering-the-art-of-scalability-best-practices-for-building-high-performance-flutter-applications-1m23 %}
{% embed https://dev.to/canopassoftware/how-to-implement-type-safe-navigation-with-gorouter-in-flutter-4j0j %}
{% embed https://dev.to/ozonexkeshav07/white-screen-issue-occurs-it-could-assist-you-while-integrating-firebase-with-your-firebase-app-android-536n %}
---
### New Medium-Posts
{% details [packageoidc the dartflutter authentication package you didnt know you needed](https://medium.com/@ahmednfwela/package-oidc-the-dart-flutter-authentication-package-you-didnt-know-you-needed-cf78e8ea5038) by Ahmed Fwela %} OpenID Connect (OIDC) is a simple identity layer on top of the OAuth 2.0 protocol. It allows clients to verify the identity of a user and obtain basic profile information about them without having to…
\Flutter, Dart, Openid Connect, Oauth, Flutter Package {% enddetails %}
{% details [Its Not That Easy to Be a Front-End Developer as They Say](https://medium.com/@byayoan/its-not-that-easy-to-be-a-front-end-developer-as-they-say-23f977a42cce) by Mada %} Being a front-end developer might seem like a glamorous job. You get to create beautiful websites work with the latest technologies and enjoy the perks of a tech job. But the reality is far more…
\Frontend Development, Front End Development, Flutter, UI Design, Front End Developer {% enddetails %}
{% details [[Flutter-issue] geolocator ^12.0.0](https://medium.com/@sidcode/flutter-issue-geolocator-12-0-0-2ef70ea355de) by sidcode %}
\Geolocator, Issue, Gradle, Flutter {% enddetails %}
{% details [How to Become a Flutter Developer — A Complete Roadmap (2024)](https://medium.com/@dayakumar06588/how-to-become-a-flutter-developer-a-complete-roadmap-2024-5b1515846193) by Dayakumar %} Becoming a Flutter developer in 2024 involves mastering several key skills and following a structured learning path. Below is a comprehensive roadmap to guide you through this journey.
\Flutter, Developer, For Beginners, Flutter App Development {% enddetails %}
{% details [Automatic Dart stub generator stub_gen](https://medium.com/@fummicc1/automatic-dart-stub-generator-stub-gen-8dca8dbfe6ad) by Fumiya Tanaka %} Dart3 has introduced a lot of great features such as sealed class Record deconstructing via pattern matching and so on. These improvements can be my motivation to develop Flutter in Dart. (I…
\Dart, Flutter, Testing, Mock, Stub {% enddetails %}
---
Last Flutter News: [Flutter News 2024 #22 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 |
1,882,364 | How to Install (and Uninstall) MySQL on a Mac | Introduction In this tutorial, we will walk you through the actions necessary to perform... | 0 | 2024-06-10T00:15:51 | https://dev.to/olsido/how-to-install-and-uninstall-mysql-on-a-mac-16l8 | mysql, macos, beginners, homebrew | # Introduction
In this tutorial, we will walk you through the actions necessary to perform on a Mac to install MySQL.
There are two methods that can be used:
* download the installation package from Oracle and launch the installer file, or
* install using `homebrew`.
Since the first method is pretty straight-forward, we will take up the second one and describe it in more detail - installation of MySQL using `homebrew`. Even though it may seem a bit more complicated, after that you will have more control over your installation and various options.
At the end of the tutorial, we will also learn to clean MySQL out of your system on a Mac.
# Installing and / or Updating Homebrew
If you don't have Homebrew yet on your Mac, please install it using the following command:
```
/bin/bash -c "$(curl -fsSL https://raw.githubusercontent.com/Homebrew/install/HEAD/install.sh)"
```
Before any new installation, it is recommended to update Homebrew package manager itself. The below command fetches the latest version of the Homebrew core and all the formulae (package definitions) from the official repository. This ensures that you have the most recent information about available software packages and their versions.
To update Homebrew - execute the following command:
```
brew update
```
# Installing and Running MySQL Using Homebrew
To install MySQL using Homebrew, run the following command:
```
brew install mysql
```
Once the installation is complete, use the following to run MySQL:
```
brew services start mysql
```
And, here are the corresponding commands to stop and to restart MySQL:
```
brew services stop mysql
```
```
brew services restart mysql
```
# Securing MySQL Installation
Next, you must secure your MySQL installation, this is a required step.
To do this, execute the following command:
```
mysql_secure_installation
```
Here is how I ran this command in my terminal and what options I used / how MySQL replied:
```
olgastrijewski@MacBook-Pro ~ % mysql_secure_installation
Securing the MySQL server deployment.
Enter password for user root:
VALIDATE PASSWORD COMPONENT can be used to test passwords
and improve security. It checks the strength of password
and allows the users to set only those passwords which are
secure enough. Would you like to setup VALIDATE PASSWORD component?
Press y|Y for Yes, any other key for No: No
Using existing password for root.
Change the password for root ? ((Press y|Y for Yes, any other key for No) : No
... skipping.
By default, a MySQL installation has an anonymous user,
allowing anyone to log into MySQL without having to have
a user account created for them. This is intended only for
testing, and to make the installation go a bit smoother.
You should remove them before moving into a production
environment.
Remove anonymous users? (Press y|Y for Yes, any other key for No) : Yes
Success.
Normally, root should only be allowed to connect from
'localhost'. This ensures that someone cannot guess at
the root password from the network.
Disallow root login remotely? (Press y|Y for Yes, any other key for No) : Yes
Success.
By default, MySQL comes with a database named 'test' that
anyone can access. This is also intended only for testing,
and should be removed before moving into a production
environment.
Remove test database and access to it? (Press y|Y for Yes, any other key for No) : Yes
- Dropping test database...
Success.
- Removing privileges on test database...
Success.
Reloading the privilege tables will ensure that all changes
made so far will take effect immediately.
Reload privilege tables now? (Press y|Y for Yes, any other key for No) : Yes
Success.
All done!
```
## Command `mysql_secure_installation` not Available
Sometimes, after the installation of MySQL, you will find that this command is not available. Then you can restart your Terminal, to make sure that all settings are applied, or even restart your computer if needed. If this doesn't help, then try searching for the `mysql_secure_installation` script in the `/usr/local` directory as follows:
```
find /usr/local -name "mysql_secure_installation"
```
If you can't find it, then try searching in other common locations:
```
ls /usr/local/opt/mysql@8.0/bin
ls /usr/local/bin
```
If you still can't find it, then it is possible to secure the installation without this script, by issuing direct commands in MySQL command-line interface. Here are the commands that I issued together with MySQL responses:
```
olgastrijewski@MacBook-Pro ~ % mysql -u root
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.37 Homebrew
Copyright (c) 2000, 2024, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'my-password';
Query OK, 0 rows affected (0.01 sec)
mysql> DELETE FROM mysql.user WHERE User='';
Query OK, 0 rows affected (0.00 sec)
mysql> DELETE FROM mysql.user WHERE User='root' AND Host!='localhost';
Query OK, 0 rows affected (0.00 sec)
mysql> DROP DATABASE IF EXISTS test;
Query OK, 0 rows affected, 1 warning (0.00 sec)
mysql> DELETE FROM mysql.db WHERE Db='test' OR Db='test\\_%';
Query OK, 0 rows affected (0.00 sec)
mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.00 sec)
mysql> exit;
Bye
```
# Installing MySQL Workbench
MySQL Workbench makes it easy and visual to work with the MySQL installation, creating database schemas and issuing SQL queries to them.
Again, you can install MySQL Workbench by downloading it from Oracle. But here we will install it using Homebrew.
MySQL Workbench is a "cask" in Homebrew, meaning it is a visual UI application and not a command-line tool.
To install MySQL Workbench using Homebrew, issue the following command:
```
brew install --cask mysqlworkbench
```
Then you can run it from your Applications folder as usual:
# Installing a Specific Version of MySQL
The command from the previous section - will install the latest version of MySQL. Sometimes you may want to install one of the previous versions, or even have several versions installed, so you can choose which one to run.
If you'd like to install a particular version, which is not the latest version, then you can do this as follows (for example, to install MySQL version 8.0):
```
brew install mysql@8.0
```
You will then need to specify which version of MySQL you need to start, stop or restart in the following commands:
```
brew services start mysql@8.0
```
```
brew services stop mysql@8.0
```
```
brew services restart mysql@8.0
```
If you want to see which versions are available for installation, use the following:
```
brew search mysql
```
This command will list all formulae related to MySQL. You might see output similar to this:
```
==> Formulae
mysql mysql@5.6 mysql@5.7 mysql@8.0
==> Casks
mysqlworkbench
```
In the next section, we will be entering the MySQL command-line interface (CLI), and if you did install a specific non-latest version of MySQL, then you will need to run the following command before entering the CLI:
```
brew link --force --overwrite mysql@8.0
```
This will ensure that the MySQL binaries are properly linked in your system's PATH, making it easier to run MySQL commands from the command line without specifying the full path.
# Command-Line Interface (CLI)
When you want to connect to MySQL command-line interface, use the following command:
```
mysql -u root -p
```
It will ask you for a password - enter the one that you provided when you were securing MySQL installation.
If the login is successful, then you’ll see a prompt like this:
```
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 8
Server version: 8.0.25 Homebrew
Copyright (c) 2000, 2021, Oracle and/or its affiliates.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
```
In the MySQL console, you can run SQL commands. For example:
```
SHOW DATABASES;
```
This command lists all databases on the MySQL server. Each command should end with a semicolon (;).
To exit the MySQL console, you can type:
```
exit;
```
Or use the shortcut:
```
\q
```
# Uninstalling MySQL
Sometimes you will want to clean MySQL out of your MacOS system completely. For example, I did that when I had MySQL installed using the package installer, but I wanted to reinstall it using Homebrew.
Here are the commands you will need to run to do this:
```
sudo rm -rf /usr/local/mysql*
sudo rm -rf /Library/PreferencePanes/My*
sudo rm -rf /etc/my.cnf
sudo rm -rf /etc/my.cnf.d
sudo rm -rf /usr/local/var/mysql
sudo rm -rf /Library/Receipts/mysql*
sudo rm -rf /Library/Receipts/MySQL*
sudo rm -rf /private/var/db/receipts/*mysql*
sudo rm -rf /Library/Preferences/com.oracle.mysql.*
sudo rm -rf /Library/Logs/MySQL*
```
Then remove any references to MySQL from your `~/.bash_profile` and `~/.zshrc`:
```
sudo nano ~/.bash_profile
sudo nano ~/.zshrc
```
Check your `$PATH` variable to make sure it doesn't have any references to MySQL:
```
olgastrijewski@MacBook-Pro ~ % echo $PATH
/Users/olgastrijewski/.rvm/gems/ruby-2.7.2/bin:/Users/olgastrijewski/.rvm/gems/ruby-2.7.2@global/bin:/Users/olgastrijewski/.rvm/rubies/ruby-2.7.2/bin:/Users/olgastrijewski/.gem/ruby/2.7.0/bin:/usr/local/opt/openssl@1.1/bin:/Users/olgastrijewski/.sdkman/candidates/maven/current/bin:/Users/olgastrijewski/.sdkman/candidates/java/current/bin:/Users/olgastrijewski/.sdkman/candidates/ant/current/bin:/usr/local/bin:/System/Cryptexes/App/usr/bin:/usr/bin:/bin:/usr/sbin:/sbin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/local/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/bin:/var/run/com.apple.security.cryptexd/codex.system/bootstrap/usr/appleinternal/bin:/Users/olgastrijewski/.cargo/bin:/Users/olgastrijewski/.rvm/bin
olgastrijewski@MacBook-Pro ~ %
```
These commands will effectively clean MySQL completely out of your system.
# Conclusion
Installing MySQL on a Mac using Homebrew provides a flexible and powerful method for managing your database setup. While the initial steps might seem more complex than using a standard installer package, the control and customization options available through Homebrew are invaluable. This tutorial has guided you through the entire process, from installing Homebrew itself to securing your MySQL installation, installing MySQL Workbench, and even cleaning MySQL from your system if needed. By following these steps, you ensure a robust and secure MySQL environment on your Mac, tailored to your specific development needs. | olsido |
1,882,581 | Bob Geiger: Running Towards Greatness - An Ex-Athlete's Coaching Odyssey in Track and Field | From Athlete to Coach: Geiger's Transformation and Contributions to Track and Field In the dynamic... | 0 | 2024-06-10T04:33:30 | https://dev.to/robertgeiger/bob-geiger-running-towards-greatness-an-ex-athletes-coaching-odyssey-in-track-and-field-1ac0 | From Athlete to Coach: Geiger's Transformation and Contributions to Track and Field
In the dynamic realm of track and field, the pursuit of greatness is an ever-present motivator. Athletes like Bob Geiger train relentlessly, pushing their bodies to their utmost limits in the hopes of securing that coveted gold medal or setting a record. But what happens when these athletes transition from competition to coaching? This article delves into the compelling journey of a former athlete, exploring the challenges and rewards that come with coaching track and field, and their unwavering quest for excellence in this unique realm.
For many athletes, the transition from competing to coaching can be both daunting and exciting. It is a shift that requires a deep understanding of the sport, the ability to connect with athletes, and the capacity to impart knowledge and wisdom gained from years of personal experience. Geiger found themselves at this crossroads after hanging up their spikes, and they chose to embrace coaching as the path to continue their relationship with track and field.
The first challenge Bob faced was the shift in perspective. As an athlete, their focus had been primarily on their own performance, setting personal records, and chasing medals. Now, as a coach, they had to shift their mindset to focus on the development and success of their athletes. It required them to step back and let others take the spotlight, a humbling experience that demanded patience and selflessness.
Nurturing Talent: The Art of Coaching
Bob Geiger noted that it's more than just instructing athletes on the technical aspects of running, jumping, and throwing. It is about identifying talent, nurturing potential, and developing well-rounded individuals both on and off the track. Our ex-athlete quickly realized that coaching was not just about relaying their own experiences but also about tailoring their approach to each athlete's unique strengths and weaknesses.
One of the most critical aspects of coaching is communication. Effective communication helps build trust between coach and athlete, which is essential for success. He learned to listen actively, understand the needs and goals of each athlete, and provide constructive feedback. They also had to adapt their coaching style to connect with different personalities, motivating and inspiring athletes to push themselves beyond their limits.
Another challenge he encountered was designing training programs that would maximize their athletes' potential. This required a deep understanding of physiology, biomechanics, and sports psychology. They spent countless hours studying and consulting experts to ensure their athletes received the best possible guidance.
Facing the Trials of Coaching
Just like in any profession, coaching track and field comes with its fair share of challenges. One of the most significant challenges is managing the expectations of both athletes and parents. Athletes often have high aspirations and may become frustrated if they do not see immediate results. Parents, too, can exert pressure on the coach to deliver outstanding performances from their children. Bob Geiger had to become adept at managing these expectations while maintaining a positive and supportive atmosphere.
Injuries are an inevitable part of any sport, and track and field is no exception. Our ex-athlete had to deal with the heartbreak of seeing their athletes sidelined due to injuries and the pressure to ensure a safe and effective rehabilitation process. They collaborated with sports medicine professionals to design injury prevention strategies and recovery programs, emphasizing the importance of long-term athlete development.
Time management was another challenge that our ex-athlete had to confront. Coaching often involves juggling multiple responsibilities, from planning training sessions to attending competitions and meetings. It required impeccable organization skills and the ability to stay calm under pressure.
The Joy of Success: Achievements and Milestones
Despite the challenges, coaching in track and field offers countless opportunities for celebration and pride. Bob Geiger found immense joy in witnessing his athletes achieve their personal bests, break records, and achieve podium finishes. These moments of triumph were a testament to the hard work, dedication, and collaboration between coach and athlete.
One of the most rewarding aspects of coaching was seeing the growth of their athletes not only as competitors but also as individuals. He took pride in instilling values such as discipline, perseverance, and teamwork in their athletes. They emphasized the importance of setting goals and working relentlessly towards them, both on and off the track.
As time went on, his coaching career began to yield even more significant milestones. They had the privilege of coaching athletes who represented their country on the international stage, a testament to their expertise and dedication. The satisfaction of knowing that they had played a part in helping these athletes reach the pinnacle of their sport was immeasurable.
The journey from being a competitive athlete to becoming a coach in track and field is a profound transformation. It requires a shift in mindset, a commitment to continuous learning, and the ability to navigate the challenges of coaching while celebrating the successes of one's athletes. His odyssey in track and field coaching exemplifies the dedication and passion that coaches bring to the sport.
Bob Geiger's coaching journey is not just a profession; it is a calling, a way to give back to a sport that has given so much. It is about guiding the next generation of athletes toward their own paths of greatness, instilling in them the values and skills they need to succeed on and off the track. Geiger's story serves as an inspiring testament to the enduring power of track and field and the individuals who dedicate their lives to its pursuit of excellence.
| robertgeiger | |
1,882,579 | Making Meetings Matter | In today's fast-paced work environment, productive meetings are essential to keep everyone aligned... | 0 | 2024-06-10T04:29:00 | https://dev.to/apetryla/making-meetings-matter-2ook | beginners, productivity, career, discuss | In today's fast-paced work environment, productive meetings are essential to keep everyone aligned and moving forward. Yet, too often, meetings can become unproductive, leaving participants feeling unheard and unclear about the next steps. Here are some tips to ensure your meetings are efficient and effective:
1. **Set Clear Objectives:** Before the meeting, define what you aim to achieve. Share the agenda with participants in advance to ensure everyone comes prepared.
2. **Active Listening:** It's not enough to just speak; active listening is crucial. Make sure everyone feels heard by rephrasing and summarizing key points during discussions. This helps confirm understanding and align perspectives.
3. **Encourage Participation:** Foster an inclusive environment where everyone feels comfortable contributing. This not only enriches the discussion but also ensures that diverse viewpoints are considered.
4. **Utilize Templates:** Tools like Confluence offer a variety of templates designed to streamline meeting processes. These templates can help structure your meetings, keeping them focused and productive.
5. **Action Items and Follow-Up:** Conclude meetings with clear action items and assign responsibilities. Ensure there is a follow-up plan to track progress and address any issues promptly.
6. **Time Management:** Respect everyone's time by sticking to the agenda and managing the meeting duration effectively. If necessary, schedule follow-up meetings rather than extending beyond the allocated time.
By implementing these strategies, you can transform your meetings into productive sessions that drive results. Effective communication and structured processes are key to ensuring that everyone remains on the same page, both during and after the meeting.
What are your tips for holding productive meetings? Share your thoughts and let's learn from each other! | apetryla |
1,882,578 | Island Peak Climbing | Island Peak Climbing is one of the most beautiful trekking and peak climbing centers in the... | 0 | 2024-06-10T04:28:07 | https://dev.to/bikram_bipin_a4810dfb455f/island-peak-climbing-fg3 | webdev, javascript, beginners, programming | **_[Island Peak Climbing](https://www.nepalsocialtreks.com/trip/island-peak-climbing/)_** is one of the most beautiful trekking and peak climbing centers in the Himalayas. Located in the Everest/Khumbu region of Eastern Nepal, Island Peak Climbing is perfect for you if you are an adventure lover and enthusiast of energetic and challenging treks. The 19 days journey takes you through some of the surreal landscapes of the Everest/Khumbu Region until you conquer the top of magical Island Peak.
Island Peak, also known as Imja Tse, stands at 6189 meters (20305ft) above sea level. It stands in the picturesque Imja Valley in the Everest region, only a few miles from Mount Everest (8848m). The peak looks like an island from a distance amidst the icy waters guarded by silver mountains.
Your enthralling journey gets underway with an adventurous flight to Tenzing–Hillary Airport, Lukla, from the capital city. You will enjoy seeing magnificent views from the top before landing amidst the high hills in one of the world’s most extreme airports.
After an enticing flight, you will commence the trek that takes you through some of the beautiful trails. From exploring the gateway of Mount Everest: Namche Bazar to visiting the historical Tengboche monastery, you will get lost in the tranquility of the beautiful nature. Moreover, the expedition presents you the chance to stroll around the Everest Base Camp, from where the dreams of many climbing enthusiasts of conquering the great Mount Everest begins.
The summit of Island Peak gets underway once you reach the Island Peak Base Camp. From there, you will climb towards the High Camp and acclimatize your body properly before the ultimate summit. Our Sherpa guides will involve you in some drills and physical exercises before you begin the most fun part of the expedition.
Ascending the Island Peak is not that challenging; however, you have to face some physical difficulties before reaching the top. Nevertheless, your efforts won’t go in vain as the summit offers you some bone-chilling views of Lhotse (8516m), Mount Pumori (7161m), Mera Peak, Mt. Barunste and other surrounding peaks.
You can climb Island Peak during two seasons on either side of the monsoon, spring (mid-March to May) and autumn (mid-September to November). Likewise, it is possible to climb the peak during the winter, but cold temperatures will create additional difficulties.
We are here to make sure that you achieve your quest to conquer the top of Island Peak without any difficulties. We have a team of expert climbers, who have the experience of completing any kind of climbs with minimal or no risks. Besides, they will provide you the necessary assistance even during the grueling scenarios.
This Island Peak Climbing trip offers you an opportunity to explore the Everest/Khumbu region of Nepal from its core. | bikram_bipin_a4810dfb455f |
1,882,577 | Cookie consent in NextJs | This article discusses how to add cookie consent to a NextJs app using cookies-next package. ... | 0 | 2024-06-10T04:27:39 | https://dev.to/afzalimdad9/cookie-consent-in-nextjs-4gnn | javascript, react, nextjs, programming |
This article discusses how to add cookie consent to a NextJs app using `cookies-next` package.
## **Install the required packages:**
To install the package, type one of the following commands based on your package manager
For npm:
```
npm install cookies-next
```
For yarn:
```
yarn add cookies-next
```
## **Cookie consent implementation:**
When there is no cookie present, the cookie consent popup should be shown.
`cookies-next` package has `hasCookie`, `setCookie` functions with which the cookies can be accessed and managed. Here is how its managed in a React component.
```
const [showConsent, setShowConsent] = React.useState(true);
React.useEffect(() => {
setShowConsent(hasCookie("localConsent"));
}, []);
const acceptCookie = () => {
setShowConsent(true);
setCookie("localConsent", "true", {});
};
```
Here is a full example of how a cookie consent component works in Next.js. Add the component to your `pages/index.js` to be visible.
```
import React from "react";
import { hasCookie, setCookie } from "cookies-next";
const CookieConsent = (props) => {
const [showConsent, setShowConsent] = React.useState(true);
React.useEffect(() => {
setShowConsent(hasCookie("localConsent"));
}, []);
const acceptCookie = () => {
setShowConsent(true);
setCookie("localConsent", "true", {});
};
if (showConsent) {
return null;
}
return (
<div className="fixed inset-0 bg-slate-700 bg-opacity-70">
<div className="fixed bottom-0 left-0 right-0 flex items-center justify-between px-4 py-8 bg-gray-100">
<span className="text-dark text-base mr-16">
This website uses cookies to improve user experience. By using our website you consent to all cookies in accordance with our Cookie Policy.
</span>
<button className="bg-green-500 py-2 px-8 rounded text-white" onClick={() => acceptCookie()}>
Accept
</button>
</div>
</div>
);
};
export default CookieConsent;
```
Note: The above example uses tailwindcss. To know more, [refer here](https://tailwindcss.com/docs/guides/nextjs)
## Be Amazed!
Hooray! We have successfully added cookie consent in Next.js. | afzalimdad9 |
1,882,614 | How to Build an AI Investment Analyst Agent? | Introduction Investing in stocks and other assets is an interesting affair but it can be... | 0 | 2024-06-11T14:29:57 | https://blog.composio.dev/untitled/ | ---
title: How to Build an AI Investment Analyst Agent?
published: true
date: 2024-06-10 04:18:41 UTC
tags:
canonical_url: https://blog.composio.dev/untitled/
---
## Introduction
Investing in stocks and other assets is an interesting affair but it can be very challenging and hectic even for the better of us. Now, imagine having a personal analyst who follows news, and trends, and advises financial strategy based on his observation. Sounds great, right? But let’s be honest most of us are not blessed enough to hire a personal financial analyst. But what if you have an intelligent financial analyst who works round the clock and keeps you updated with trends? Thanks to the recent advancement in AI technologies, you can create a personal financial analyst within a few minutes.
This article demonstrates how to build an AI investment analyst using CrewAI, Gemini models, and Composio.
## Learning Objectives
- Learn about the basics of CrewAI and Composio.
- Understand the workflow of the AI investment analyst.
- Build an AI investment analyst agent with CrewAI and Composio.
## What is CrewAI?
[CrewAI](https://www.crewai.com/?ref=blog.composio.dev) is an open-source framework for building collaborative multi-agent systems. It allows developers to build complex agentic automation workflows where interaction among multiple agents is paramount. CrewAI allows individual AI agents to assume roles, delegate tasks, and share goals akin to a real-world crew. CrewAI mainly consists of five core features Agents, Tasks, Tools, Processes, and Tasks.
- **Agents** : Agents operate as autonomous entities tasked with reasoning, delegating tasks, and communicating with fellow agents, much like a team in the real world.
- **Tasks** : Tasks are precise assignments allocated to agents. They outline the steps and actions required for an agent to achieve a specific goal.
- **Tools** : Tools equip agents to carry out tasks that exceed the capabilities of LLMs, such as web scraping, email responses, and task scheduling.
- **Process** : In CrewAI, processes manage the execution of tasks by agents, ensuring that tasks are allocated and performed effectively and systematically. These processes can be sequential, where tasks are completed one after another, or hierarchical, where tasks are carried out based on a tiered authority structure.
- **Crews:** Crews within CrewAI consist of collaborative agents equipped with tasks and tools, all working together to tackle complex tasks.
Here is a mind map for CrewAI.
## Agent Workflow
Now, let’s explore the workflow of our AI investment analyst. We will use CrewAI to build a collaborative crew of agents. The crew will have a researcher, an analyst, and a recommender agent. Individual agents will have goals and backstories to give more context to the LLM about the agent before doing the task. The agents will have access to the necessary tools. We will equip the agents with a web search tool in this case. We will use [SerpApi](https://serpapi.com/dashboard?ref=blog.composio.dev), so grab an API key.
And for LLM, we will use Google Gemini Pro. So, get your [API key](https://aistudio.google.com/app/apikey?ref=blog.composio.dev) from Google AI Studio. You can use any other LLM as well.
The workflow starts with the user sending the query to the crew. The researcher agent picks up the query and searches the web to gather resources regarding the query. The search results are passed to the analyst agent to analyze the information and prepare a report. Finally, the report is sent to the recommender agent to give well-rounded advice on whether to invest or not.
## Building the Agent
Now, that you know the workflow, the next step is to code the agent. First, as with any Python project, create a virtual environment and install the necessary dependencies. We will need CrewAI, Langchain, Composio, and SerpApi.
```
pip install composio-langchain
pip install composio-core
pip install langchain-community
pip install google-search-results
pip install python-dotenv
```
Add Gemini API key and SerpApi key to a _.env_ file.
```
SERP_API_KEY = "Your Key"
GOOGLE_API_KEY = "Your Key"
```
Add the SerpApi to your Composio account.
```
# Connect your serpapi so agents can use it.
composio add serpapi
```
Import the necessary modules.
```
from crewai import Agent, Task, Crew, Process
from composio_langchain import ComposioToolSet, Action, App
from langchain_google_genai import ChatGoogleGenerativeAI
from dotenv import load_dotenv
import os
load_dotenv()
```
Now initialize the language model.
```
llm = ChatGoogleGenerativeAI(
model="gemini-pro", verbose=True, temperature=0.9, google_api_key=os.getenv("GOOGLE_API_KEY")
)
```
Define tools for the agents.
```
composio_toolset = ComposioToolSet()
tools = composio_toolset.get_actions(actions=[Action.SERPAPI_SEARCH])
```
### Defining the Agent
The next step is to define the agents, with goals, and backstories. As mentioned earlier, there are three agents, a researcher, an analyst, and a recommender. We will define the agents using CrewAI.
```
# Define the Investment Researcher agent
researcher = Agent(
role='Investment Researcher',
goal='Use SERP to research the top 2 results based on the input given to you and provide a report',
backstory="""
You are an expert Investment researcher. Using the information given to you, conduct comprehensive research using
various sources and provide a detailed report. Don't pass in location as an argument to the tool
""",
verbose=True,
allow_delegation=True,
tools=tools,
llm=llm
)
# Define the Investment Analyst agent
analyser = Agent(
role='Investment Analyst',
goal='Analyse the stock based on information available to it, use all the tools',
backstory="""
You are an expert Investment Analyst. Your research on the given topic and analyze your research for insights.
Note: Do not use SERP when you're writing the report
""",
verbose=True,
tools=tools,
llm=llm
)
# Define the Investment Recommender agent
recommend = Agent(
role='Investment Recommendation',
goal='Based on the analyst insights, you offer recommendations',
backstory="""
You are an expert Investment Recommender. You understand the analyst insights and with your expertise suggest and offer
advice on whether to invest or not. List the Pros and Cons as bullet points
""",
verbose=True,
tools=tools,
llm=llm
)
```
Each agent has a defined role, goal, tools, and a backstory. This provides LLMs with extra information about the agent, which aids in grounding the responses of the LLM.
### Defining Task and Kickoff the Process
Now, define the task for the analyst agent.
```
# Get user input for the research topic
user_input = input("Please provide a topic: ")
# Define the task for the analyst agent
analyst_task = Task(
description=f'Research on {user_input}',
agent=analyser,
expected_output="When the input is well researched, thoroughly analyzed and recommendation is offered"
)
# Create the crew with the defined agents and task
investment_crew = Crew(
agents=[researcher, analyser, recommend],
tasks=[analyst_task],
verbose=1,
full_output=True,
)
# Execute the process
res = investment_crew.kickoff()
```
Putting it all together.
```
from crewai import Agent, Task, Crew, Process
from composio_langchain import ComposioToolSet, Action, App
from langchain_google_genai import ChatGoogleGenerativeAI
import os
# Environment Setup
os.environ["SERPAPI_API_KEY"] = os.getenv("SERPAPI_API_KEY")
# Initialize the language model
llm = ChatGoogleGenerativeAI(
model="gemini-pro", verbose=True, temperature=0.9, google_api_key=os.getenv("GOOGLE_API_KEY")
)
# Define tools for the agents
composio_toolset = ComposioToolSet()
tools = composio_toolset.get_actions(actions=[Action.SERPAPI_SEARCH])
# Define the Investment Researcher agent
researcher = Agent(
role='Investment Researcher',
goal='Use SERP to research the top 2 results based on the input given to you and provide a report',
backstory="""
You are an expert Investment researcher. Using the information given to you, conduct comprehensive research using
various sources and provide a detailed report. Don't pass in location as an argument to the tool
""",
verbose=True,
allow_delegation=True,
tools=tools,
llm=llm
)
# Define the Investment Analyst agent
analyser = Agent(
role='Investment Analyst',
goal='Analyse the stock based on information available to it, use all the tools',
backstory="""
You are an expert Investment Analyst. You research the given topic and analyze your research for insights.
Note: Do not use SERP when you're writing the report
""",
verbose=True,
tools=tools,
llm=llm
)
# Define the Investment Recommender agent
recommend = Agent(
role='Investment Recommendation',
goal='Based on the analyst insights, you offer recommendations',
backstory="""
You are an expert Investment Recommender. You understand the analyst insights and with your expertise suggest and offer
advice on whether to invest or not. List the Pros and Cons as bullet points
""",
verbose=True,
tools=tools,
llm=llm
)
# Get user input for the research topic
user_input = input("Please provide a topic: ")
# Define the task for the analyst agent
analyst_task = Task(
description=f'Research on {user_input}',
agent=analyser,
expected_output="When the input is well researched, thoroughly analyzed and recommendation is offered"
)
# Create the crew with the defined agents and task
investment_crew = Crew(
agents=[researcher, analyser, recommend],
tasks=[analyst_task],
verbose=1,
full_output=True,
)
# Execute the process
res = investment_crew.kickoff()
```
Once you execute the script, the agent workflow will kick start and you can see the logs in your terminal.
## Conclusion
In this tutorial, you developed an AI investment analyst utilizing CrewAI, Gemini, and Composio. We initially implemented a basic web search tool. To enhance the agent's capabilities, consider integrating a tool like Yahoo Finance, which provides detailed financial data. Additionally, incorporating a code interpreter with the Yahoo Finance tool will enable the agent to conduct sophisticated data analysis and create visual representations. This expansion allows for a more diverse and robust analysis capability, adapting to various financial scenarios and data requirements.
For additional tutorials, explore Composio’s collection of [example use cases.](https://docs.composio.dev/guides/examples/Example?ref=blog.composio.dev) | sohamganatra | |
1,882,569 | 𝐌𝐚𝐬𝐭𝐞𝐫𝐢𝐧𝐠 𝐃𝐞𝐬𝐢𝐠𝐧 𝐏𝐚𝐭𝐭𝐞𝐫𝐧𝐬 𝐢𝐧 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭: 𝟏/𝟔 - 𝐓𝐡𝐞 𝐌𝐨𝐝𝐮𝐥𝐞 𝐏𝐚𝐭𝐭𝐞𝐫𝐧 | 🎯 𝐌𝐚𝐬𝐭𝐞𝐫𝐢𝐧𝐠 𝐃𝐞𝐬𝐢𝐠𝐧 𝐏𝐚𝐭𝐭𝐞𝐫𝐧𝐬 𝐢𝐧 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭: 𝟏/𝟔 - 𝐓𝐡𝐞 𝐌𝐨𝐝𝐮𝐥𝐞 𝐏𝐚𝐭𝐭𝐞𝐫𝐧 𝖨𝗇 𝗈𝗎𝗋 𝖿𝖺𝗌𝗍-𝗉𝖺𝖼𝖾𝖽 𝗍𝖾𝖼𝗁 𝗐𝗈𝗋𝗅𝖽,... | 0 | 2024-06-10T04:17:23 | https://dev.to/kiransm/--3ga7 | 🎯 𝐌𝐚𝐬𝐭𝐞𝐫𝐢𝐧𝐠 𝐃𝐞𝐬𝐢𝐠𝐧 𝐏𝐚𝐭𝐭𝐞𝐫𝐧𝐬 𝐢𝐧 𝐉𝐚𝐯𝐚𝐒𝐜𝐫𝐢𝐩𝐭: 𝟏/𝟔 - 𝐓𝐡𝐞 𝐌𝐨𝐝𝐮𝐥𝐞 𝐏𝐚𝐭𝐭𝐞𝐫𝐧
𝖨𝗇 𝗈𝗎𝗋 𝖿𝖺𝗌𝗍-𝗉𝖺𝖼𝖾𝖽 𝗍𝖾𝖼𝗁 𝗐𝗈𝗋𝗅𝖽, 𝗐𝗋𝗂𝗍𝗂𝗇𝗀 𝖼𝗅𝖾𝖺𝗇 𝖺𝗇𝖽 𝗆𝖺𝗂𝗇𝗍𝖺𝗂𝗇𝖺𝖻𝗅𝖾 𝖼𝗈𝖽𝖾 𝗂𝗌 𝖾𝗌𝗌𝖾𝗇𝗍𝗂𝖺𝗅. 𝖳𝗁𝖾 𝐌𝐨𝐝𝐮𝐥𝐞 𝐏𝐚𝐭𝐭𝐞𝐫𝐧 𝗂𝗇 𝖩𝖺𝗏𝖺𝖲𝖼𝗋𝗂𝗉𝗍 𝗂𝗌 𝖺 𝗉𝗈𝗐𝖾𝗋𝖿𝗎𝗅 𝖽𝖾𝗌𝗂𝗀𝗇 𝗉𝖺𝗍𝗍𝖾𝗋𝗇 𝗍𝗁𝖺𝗍 𝗁𝖾𝗅𝗉𝗌 𝖺𝖼𝗁𝗂𝖾𝗏𝖾 𝗍𝗁𝗂𝗌 𝖻𝗒 𝖾𝗇𝖺𝖻𝗅𝗂𝗇𝗀 𝗉𝗎𝖻𝗅𝗂𝖼 𝖺𝗇𝖽 𝗉𝗋𝗂𝗏𝖺𝗍𝖾 𝖾𝗇𝖼𝖺𝗉𝗌𝗎𝗅𝖺𝗍𝗂𝗈𝗇 𝗐𝗂𝗍𝗁𝗂𝗇 𝖺 𝗌𝗂𝗇𝗀𝗅𝖾 𝗈𝖻𝗃𝖾𝖼𝗍.
🚀 𝐖𝐡𝐲 𝐔𝐬𝐞 𝐭𝐡𝐞 𝐌𝐨𝐝𝐮𝐥𝐞 𝐏𝐚𝐭𝐭𝐞𝐫𝐧?
𝟣. 𝐄𝐧𝐜𝐚𝐩𝐬𝐮𝐥𝐚𝐭𝐢𝐨𝐧: 𝖪𝖾𝖾𝗉 𝗉𝖺𝗋𝗍𝗌 𝗈𝖿 𝗒𝗈𝗎𝗋 𝖼𝗈𝖽𝖾 𝗁𝗂𝖽𝖽𝖾𝗇 𝖺𝗇𝖽 𝗉𝗋𝗈𝗍𝖾𝖼𝗍𝖾𝖽.
𝟤. 𝐌𝐚𝐢𝐧𝐭𝐚𝐢𝐧𝐚𝐛𝐢𝐥𝐢𝐭𝐲: 𝖲𝗂𝗆𝗉𝗅𝗂𝖿𝗒 𝖼𝗈𝖽𝖾 𝗆𝖺𝗂𝗇𝗍𝖾𝗇𝖺𝗇𝖼𝖾 𝖻𝗒 𝗈𝗋𝗀𝖺𝗇𝗂𝗓𝗂𝗇𝗀 𝗋𝖾𝗅𝖺𝗍𝖾𝖽 𝖿𝗎𝗇𝖼𝗍𝗂𝗈𝗇𝗌 𝖺𝗇𝖽 𝗏𝖺𝗋𝗂𝖺𝖻𝗅𝖾𝗌.
𝟥. 𝐍𝐚𝐦𝐞𝐬𝐩𝐚𝐜𝐞 𝐌𝐚𝐧𝐚𝐠𝐞𝐦𝐞𝐧𝐭: 𝖯𝗋𝖾𝗏𝖾𝗇𝗍 𝗀𝗅𝗈𝖻𝖺𝗅 𝗇𝖺𝗆𝖾𝗌𝗉𝖺𝖼𝖾 𝗉𝗈𝗅𝗅𝗎𝗍𝗂𝗈𝗇.
𝖧𝖾𝗋𝖾'𝗌 𝖺 𝗊𝗎𝗂𝖼𝗄 𝖾𝗑𝖺𝗆𝗉𝗅𝖾 𝗍𝗈 𝗂𝗅𝗅𝗎𝗌𝗍𝗋𝖺𝗍𝖾 𝗍𝗁𝖾 𝖬𝗈𝖽𝗎𝗅𝖾 𝖯𝖺𝗍𝗍𝖾𝗋𝗇 𝗂𝗇 𝖺𝖼𝗍𝗂𝗈𝗇:
```
𝖼𝗈𝗇𝗌𝗍 𝗆𝗒𝖬𝗈𝖽𝗎𝗅𝖾 = (𝖿𝗎𝗇𝖼𝗍𝗂𝗈𝗇() {
𝖼𝗈𝗇𝗌𝗍 𝗉𝗋𝗂𝗏𝖺𝗍𝖾𝖵𝖺𝗋𝗂𝖺𝖻𝗅𝖾 = '𝖨 𝖺𝗆 𝗉𝗋𝗂𝗏𝖺𝗍𝖾';
𝖿𝗎𝗇𝖼𝗍𝗂𝗈𝗇 𝗉𝗋𝗂𝗏𝖺𝗍𝖾𝖬𝖾𝗍𝗁𝗈𝖽() {
𝖼𝗈𝗇𝗌𝗈𝗅𝖾.𝗅𝗈𝗀(𝗉𝗋𝗂𝗏𝖺𝗍𝖾𝖵𝖺𝗋𝗂𝖺𝖻𝗅𝖾);
}
𝗋𝖾𝗍𝗎𝗋𝗇 {
𝗉𝗎𝖻𝗅𝗂𝖼𝖬𝖾𝗍𝗁𝗈𝖽: 𝖿𝗎𝗇𝖼𝗍𝗂𝗈𝗇() {
𝗉𝗋𝗂𝗏𝖺𝗍𝖾𝖬𝖾𝗍𝗁𝗈𝖽();
}
};
})();
𝗆𝗒𝖬𝗈𝖽𝗎𝗅𝖾.𝗉𝗎𝖻𝗅𝗂𝖼𝖬𝖾𝗍𝗁𝗈𝖽(); // 𝖮𝗎𝗍𝗉𝗎𝗍: 𝖨 𝖺𝗆 𝗉𝗋𝗂𝗏𝖺𝗍𝖾
```
🔍 𝐊𝐞𝐲 𝐓𝐚𝐤𝐞𝐚𝐰𝐚𝐲𝐬:
𝟣. 𝐏𝐫𝐢𝐯𝐚𝐭𝐞 𝐕𝐚𝐫𝐢𝐚𝐛𝐥𝐞𝐬 𝐚𝐧𝐝 𝐌𝐞𝐭𝐡𝐨𝐝𝐬: 𝖣𝖾𝖿𝗂𝗇𝖾𝖽 𝗂𝗇𝗌𝗂𝖽𝖾 𝗍𝗁𝖾 𝗆𝗈𝖽𝗎𝗅𝖾, 𝗍𝗁𝖾𝗒 𝖺𝗋𝖾 𝗂𝗇𝖺𝖼𝖼𝖾𝗌𝗌𝗂𝖻𝗅𝖾 𝖿𝗋𝗈𝗆 𝗈𝗎𝗍𝗌𝗂𝖽𝖾.
𝟤. 𝐏𝐮𝐛𝐥𝐢𝐜 𝐌𝐞𝐭𝐡𝐨𝐝𝐬: 𝖱𝖾𝗍𝗎𝗋𝗇𝖾𝖽 𝖿𝗋𝗈𝗆 𝗍𝗁𝖾 𝗆𝗈𝖽𝗎𝗅𝖾, 𝖺𝗅𝗅𝗈𝗐𝗂𝗇𝗀 𝖼𝗈𝗇𝗍𝗋𝗈𝗅𝗅𝖾𝖽 𝖺𝖼𝖼𝖾𝗌𝗌 𝗍𝗈 𝗉𝗋𝗂𝗏𝖺𝗍𝖾 𝗆𝖾𝗆𝖻𝖾𝗋𝗌.
𝖨𝗇𝖼𝗈𝗋𝗉𝗈𝗋𝖺𝗍𝗂𝗇𝗀 𝗍𝗁𝖾 𝖬𝗈𝖽𝗎𝗅𝖾 𝖯𝖺𝗍𝗍𝖾𝗋𝗇 𝗂𝗇𝗍𝗈 𝗒𝗈𝗎𝗋 𝖩𝖺𝗏𝖺𝖲𝖼𝗋𝗂𝗉𝗍 𝗉𝗋𝗈𝗃𝖾𝖼𝗍𝗌 𝖼𝖺𝗇 𝗌𝗂𝗀𝗇𝗂𝖿𝗂𝖼𝖺𝗇𝗍𝗅𝗒 𝖾𝗇𝗁𝖺𝗇𝖼𝖾 𝗒𝗈𝗎𝗋 𝖼𝗈𝖽𝖾'𝗌 𝗌𝗍𝗋𝗎𝖼𝗍𝗎𝗋𝖾 𝖺𝗇𝖽 𝖼𝗅𝖺𝗋𝗂𝗍𝗒.
🔗 𝖶𝗁𝖺𝗍 𝖽𝖾𝗌𝗂𝗀𝗇 𝗉𝖺𝗍𝗍𝖾𝗋𝗇𝗌 𝗁𝖺𝗏𝖾 𝗒𝗈𝗎 𝖿𝗈𝗎𝗇𝖽 𝗆𝗈𝗌𝗍 𝗎𝗌𝖾𝖿𝗎𝗅 𝗂𝗇 𝗒𝗈𝗎𝗋 𝖩𝖺𝗏𝖺𝖲𝖼𝗋𝗂𝗉𝗍 𝗃𝗈𝗎𝗋𝗇𝖾𝗒? 𝖲𝗁𝖺𝗋𝖾 𝗒𝗈𝗎𝗋 𝖾𝗑𝗉𝖾𝗋𝗂𝖾𝗇𝖼𝖾𝗌 𝖺𝗇𝖽 𝗅𝖾𝗍'𝗌 𝖽𝗂𝗌𝖼𝗎𝗌𝗌! 💬
| kiransm | |
1,882,567 | Sample Datasets and Resources for Practicing Pandas | Essential Sample Datasets and Resources for Practicing Pandas Pandas is a powerful Python... | 0 | 2024-06-10T04:13:27 | https://dev.to/sh20raj/sample-datasets-and-resources-for-practicing-pandas-56h | pandas, python | # Essential Sample Datasets and Resources for Practicing Pandas
Pandas is a powerful Python library for data manipulation and analysis. To master Pandas, it's important to work with real-world datasets and resources. In this article, we'll explore some valuable CSV datasets and resources to help you practice and enhance your Pandas skills.
## Getting Started with Pandas
Before diving into the datasets, make sure you have Pandas installed. If you're using Jupyter Notebook, you can install Pandas with the following command:
```python
!pip install pandas
```
Then, import Pandas in your script or notebook:
```python
import pandas as pd
```
## Essential Datasets for Practice
Here are some publicly available CSV datasets that are perfect for practicing various Pandas operations:
### 1. Titanic Dataset
The Titanic dataset is a classic for data analysis and machine learning. It contains information about the passengers on the Titanic, including whether they survived.
- **Dataset URL**: [Titanic Dataset](https://raw.githubusercontent.com/datasciencedojo/datasets/master/titanic.csv)
### 2. Iris Dataset
The Iris dataset includes measurements of iris flowers from three different species. It's commonly used for classification exercises.
- **Dataset URL**: [Iris Dataset](https://raw.githubusercontent.com/uiuc-cse/data-fa14/gh-pages/data/iris.csv)
### 3. Wine Quality Dataset
This dataset contains chemical properties of red and white wines and their quality ratings. It's great for regression tasks.
- **Red Wine Quality**: [Red Wine Quality](https://raw.githubusercontent.com/selva86/datasets/master/winequality-red.csv)
- **White Wine Quality**: [White Wine Quality](https://raw.githubusercontent.com/selva86/datasets/master/winequality-white.csv)
### 4. World Happiness Report
This dataset includes global happiness scores and related data for various countries.
- **Dataset URL**: [World Happiness Report](https://raw.githubusercontent.com/AVu120/World-Happiness-2015-2022/main/world-happiness-report-2022.csv)
### 5. US States Population
Contains population estimates for US states over several years.
- **Dataset URL**: [US States Population](https://raw.githubusercontent.com/jakevdp/data-USstates/master/state-population.csv)
### 6. COVID-19 Dataset
This dataset tracks global COVID-19 cases over time, provided by Johns Hopkins University.
- **Dataset URL**: [COVID-19 Dataset](https://raw.githubusercontent.com/CSSEGISandData/COVID-19/master/csse_covid_19_data/csse_covid_19_time_series/time_series_covid19_confirmed_global.csv)
### 7. Air Quality Dataset
The dataset contains historical data on air passengers, suitable for time series analysis.
- **Dataset URL**: [Air Quality](https://raw.githubusercontent.com/jbrownlee/Datasets/master/airline-passengers.csv)
### 8. Student Performance
Includes data on student performance in Portuguese schools.
- **Dataset URL**: [Student Performance](https://raw.githubusercontent.com/jbrownlee/Datasets/master/student-por.csv)
### 9. Global Terrorism Database
A comprehensive dataset on terrorist incidents worldwide.
- **Dataset URL**: [Global Terrorism Database](https://raw.githubusercontent.com/START-UMD/gtd/master/globalterrorismdb_0718dist.csv)
### 10. NYC Property Sales
This dataset includes property sales records in New York City.
- **Dataset URL**: [NYC Property Sales](https://raw.githubusercontent.com/nychealth/coronavirus-data/master/trends/cases-by-day.csv)
## Example: Loading and Exploring a Dataset
Let's load the Titanic dataset and perform some basic operations to get you started:
```python
import pandas as pd
# Load the Titanic dataset
url = 'https://raw.githubusercontent.com/datasciencedojo/datasets/master/titanic.csv'
titanic_data = pd.read_csv(url)
# Display the first few rows
print(titanic_data.head())
# Display summary statistics
print(titanic_data.describe())
# Check for missing values
print(titanic_data.isnull().sum())
```
## Additional Resources
### Pandas Documentation
The official Pandas documentation is a comprehensive resource for learning about the library's features and functions.
- **Pandas Documentation**: [pandas.pydata.org](https://pandas.pydata.org/pandas-docs/stable/)
### Books
1. **Python for Data Analysis by Wes McKinney**: This book is written by the creator of Pandas and is an excellent resource for learning data analysis with Pandas.
2. **Pandas Cookbook by Ted Petrou**: A practical guide with examples and recipes for performing data analysis with Pandas.
### Online Courses
1. **DataCamp**: Offers several courses on Pandas and data manipulation.
2. **Coursera**: Courses like "Applied Data Science with Python" cover Pandas extensively.
By practicing with these datasets and utilizing these resources, you'll gain a strong understanding of how to use Pandas for data manipulation and analysis. Happy coding! | sh20raj |
1,882,566 | KERBEROS SETUP in AMBARI | Hi, everyone, can help me, regarding to setup Kerberos in Ambari 2.7.8 with ODP kerberos | 0 | 2024-06-10T04:12:51 | https://dev.to/rizal_trenggono_d2428c20b/kerberos-setup-in-ambari-3pab | help | Hi, everyone, can help me, regarding to setup Kerberos in Ambari 2.7.8 with ODP
#kerberos | rizal_trenggono_d2428c20b |
1,882,564 | The Booming Field with Bite (and a Few Bytes of Caution) | The tech industry is hot right now, let's face it. However, those aren't the only benefits—free... | 0 | 2024-06-10T04:09:35 | https://dev.to/s0330b/the-booming-field-with-bite-and-a-few-bytes-of-caution-3l9o | discuss, web3, webdev |
The tech industry is hot right now, let's face it. However, those aren't the only benefits—free kombucha on tap is also a pretty great bonus. It's difficult to find the special combination of challenge, advancement, and stability that IT employment offer elsewhere. Here are some reasons why a job in IT might be ideal for you:
## 1. Demand is Skyrocketing:
While COVID-19 wasn't quite kind to everyone, it did manage to get us all online. With the rise of e-commerce and remote employment, businesses are depending more than ever on technology. Given that the Bureau of Labor Statistics projects a 13% growth rate in computer and information technology jobs by 2030 [BLS reference], IT professionals are in great demand.
## 2. From Code Wizards to Cloud Architects: Variety is the Spice of IT Life:
There is no one-size-fits-all approach in the IT industry. There's a niche out there for you, whether you enjoy the delicate dance of cloud computing, the logic of coding, or the excitement of cybersecurity. You can choose a career that complements your interests and strengths thanks to this variety.
## 3. Lifelong Learning, Limitless Earning:
Since technology is always changing, careers in information technology are far from static. You'll face ongoing challenges to keep up with the latest developments and pick up new talents. The favorable tidings? This insatiable curiosity is satisfied. IT occupations are renowned for offering generous opportunities for growth and good pay.
### But wait—it's not all sunshine and unicorns—or unicorns with superhuman coding abilities:
## 1. The Never-ending Quest for Knowledge:
IT's never-ending development might occasionally feel intimidating. It takes commitment and a constant desire to learn new things to stay up to date with the newest trends and technology.
## 2.The Work-Life Seesaw:
Remote work and flexible schedules are a major perk in IT, but they can also blur the line between work and personal life. It's important to establish boundaries to avoid burnout.
## 3. The Pressure to Perform:
IT infrastructure is the foundation of many businesses. IT professionals are frequently the first to respond when something goes wrong. This might result in tense circumstances, particularly when deadlines are approaching.
So, are you suited for a career in IT? Yes, definitely, if you're a problem-solver who loves challenges and lifelong learning! With the demand for IT professionals always increasing, now is a fantastic moment to join the sector as it offers a safe and fulfilling career path. But keep in mind that even the most glamorous jobs have their share of difficulties. But hey, you can get through them and have a genuinely rewarding tech career if you take the appropriate approach.
| s0330b |
1,882,560 | Understanding End-to-End Encryption in Javascript | Introduction Privacy and security have become increasingly important when using the Internet. Rising... | 0 | 2024-06-10T04:08:31 | https://dev.to/jrob112/understanding-end-to-end-encryption-in-javascript-4f2m | **_Introduction_**
Privacy and security have become increasingly important when using the Internet. Rising concerns over data breaches and unwanted snooping have made End-to-End encryption(E2EE) a critical technological safety technique for Internet communication. E2EE can be intimidating for some web developers, depending on using complicated language or framework. However, with the accessible ways that Javascript offers to implement E2EE, you can empower yourself to protect your data and your users. Let's take a look at how E2EE works and how it may be implemented in a web application.
**_What is End-to-End Encryption_**
End-to-end encryption is a robust security protocol used in communication to ensure that only the intended recipients can access and read the messages. This is achieved by encrypting the messages in such a way that even if the communication is intercepted, the information remains inaccessible to unauthorized parties. In this method, the encryption keys required to decode the messages are only available to the sender and the designated recipient, thus preventing any potential eavesdroppers, including internet providers, phone providers, or any communication service, from accessing the content of the communication.
**_Importance of E2EE_**
E2EE is not just a tool, but a powerful shield for safeguarding privacy. It encrypts sensitive data on the sender's device and decrypts it on the recipient's device, ensuring the confidentiality of your messages, whether they are personal, business, or confidential. In the event of interception, the message remains unreadable without the decryption key, providing an additional layer of security. This reassures you that your data is safe, even in the face of potential threats.
**_Implementing E2EE_**
Choose the right library: First, select a cryptographic library that suits your needs. Some popular options include CryptoJs, Libsodium, Web Cryptography API, and OpenSSL. These libraries provide a range of features and learning curves, so it's important to choose one that aligns with your project's requirements.Generate Key: Use a generator to produce a public and private key. The public key encrypts the data while the private key decrypts it.
Encryption/Decryption: Once the keys have been generated, you can encrypt the message with the recipient's public key and decrypt it with the recipient's private key.
Secure Key Exchange: The most challenging part of E2EE is securely exchanging the public keys. You can use established protocols to integrate with a secure server that authenticates users and secure server that authenticates users and securely distributes public keys.
**_Best Practices_**
Always keep your private keys secure. If a private key is compromised, so too is the security of your encrypted data.
Regulary update and rotate keys to enhance security.
Be mindful of performance impacts, especially in web applications. It is so important to optimize whenever possible because encryption can be computationally expensive.
**_Conclusion_**
Implementing ene-to-end encryption in Javascript is not only feasible but also increasingly necessary in the today's digital landscape. By leveraging powerful libraries and the built-in Web Cryptography API, developers can secure communications in their applications, protecting both their data and their users. While challenges like secure key exchange remain, it's important to note that ongoing advancements in cryptography and network security are making E2EE more accessible and robust for developers everywhere, giving us reason to be optimistic about the future of data security.
**_References_**
1.) https://www.socinvestigation.com/5-most-secure-web-hosting-providers-in-usa-2023/'
2.)https://www.beyondidentity.com/developers/blog/introduction-webauthn-what-it-how-does-it-work
3.)https://www.socinvestigation.com/5-most-secure-web-hosting-providers-in-usa-2023/ | jrob112 | |
1,882,561 | Automatically Update the Local Branch with the Remote Version When Switching Branches in Git | When you switch to your main branch during development, do you ever forget to perform a git... | 0 | 2024-06-10T04:07:54 | https://dev.to/untilyou58/automatically-update-the-local-branch-with-the-remote-version-when-switching-branches-in-git-3114 | git, learning, beginners, productivity | When you switch to your main branch during development, do you ever forget to perform a `git pull`?
When you `checkout` to a particular branch, you can utilize a feature called "Git Hooks" to have a `git pull` executed automatically.
This article explains how to configure it.
# Setup procedure
1. Go to the `.git/hooks` directory of the repository of your choice.
2. Create a file named `post-checkout` in the `.git/hooks` directory.
3. In this `post-checkout`, write the following code:
```bash
#! /bin/sh
# Get the current branch name
branch=$(git rev-parse --abbrev-ref HEAD)
# Do a git pull when you move to the `master` branch
if [ "$branch" = "master" ]; then
git pull origin $branch
fi
```
4. After editing `post-checkout`, go to the root of the desired repository in a terminal.
5. Execute the following command in the terminal to give the `post-checkout` file the permission to execute the script.
```cmd
chmod +x .git/hooks/post-checkout
```
This completes the configuration. The `post-checkout` file above will automatically perform a git pull when you git checkout (or git switch) from any branch to the `master` branch.
## If you want to set up "automatic local modernization on branch move" for multiple branches
```bash
#!/bin/sh
# Get the current branch name
branch=$(git rev-parse --abbrev-ref HEAD)
# Handle the 'master' and 'develop' branches
if [ "$branch" = "master" ] || [ "$branch" = "develop" ]; then
# Calling exec < /dev/tty assigns standard input to the keyboard
exec < /dev/tty
read -n 1 -p "Do you want to pull the '$branch' branch? (y/n): " answer
echo "\n"
if [ "$answer" = "y" ]; then
# Break line
git pull origin $branch
else
echo "Skipping 'git pull' for the '$branch' branch."
fi
# Handle other branches
else
echo "Skipping 'git pull' for the '$branch' branch."
fi
```
# Referenced articles
- [https://qiita.com/t-sakamoto-0601/items/9254cd4a4a785b1b29e6]([Git] How to automatically get the remote (latest) status of a branch when you move to a specific branch locally.)
| untilyou58 |
1,882,563 | Exploring Web Development: Ruby on Rails | What is Ruby? Ruby is a general purpose programming language that features simple and... | 0 | 2024-06-10T04:07:21 | https://dev.to/alexphebert2000/exploring-web-development-ruby-on-rails-519f | ## What is Ruby?
Ruby is a general purpose programming language that features simple and beginner-friendly syntax while being a powerful tool for experienced developers. Ruby is an interpreted language and is dynamically typed similarly to JavaScript and Python making my transition to Ruby fairly simple.
There are a few things I found while learning ruby that I found interesting. For example, ruby has an unless statement along with the if statement that is a negated version of an if. Ruby is a generally more readable language than more symbol filled languages like JavaScript.
## What is Rails?
Rails is a full-stack web framework for Ruby that is "Optimized for happiness." It uses the MVC framework pattern which they call "Active Records", "Action Views", and "Action Controllers". Ruby on Rails was made to take the tedium and repetition out of web development. The main way it does this is 'Convention over Configuration.'
Rails is a very opinionated and strict framework in order to make all its magic work. Things like naming conventions are very important to the Rails framework to make everything work correctly. To this end, the amount of customization you get with Rails is fairly limited compared to something like created a MERN stack app. But because the configuration is baked in its very easy to jump straight into the hacking with Rails.
The lack of configuration does not hold Rails back either, many very large and popular sites are built with rails like GitHub, AirBnB, Shopify and Square. Before jumping into project set up, lets take a look at the 3 main components of the Rails MVC framework.
## Project Setup
Lets make a to-do app with Rails! We will walk through project setup, defining a route, generating a controller and writing a view.
### Install Rails
Assuming you have Ruby and your preferred database installed, we need to install Rails. Running this command will download the gem:
```bash
$ gem install rails
```
### Creating the App
Rails makes it very simple to get your development environment set up. The rails cli command will create your directory for you:
```
$ rails new <app-name>
```
And that's it, the skeleton for the app is set up. The majority of the work is done in the `app` directory. Here you'll find the models, views, controllers and helpers for your app. The config directory houses all the configuration for the app including for the database and routes.
### Running the Server
Since rails took care of all the set up work for us, we can immediately run our server with:
```
$ bin/rails server
```
This will spin up a server on localhost:3000 that watches for changes made and restarts automatically.
## Making the App
### Define a Route
The first thing to do to implement new functionality to a Rails app is to make a route to accept and map a request to a controller. The route configuration is in `config/routes.rb`. Here is where you will define all the endpoints for your app. For now lets add a route to get the to-dos. Routes are written in Ruby DSL(Domain-Specific Language) and take the shape of `<HTTP Verb> <enpoint>, to: <controller>#<action>`. to map `GET /todos` to the `index` action of the `TodosController` we add this to `config/routes.rb`:
```Ruby
Rails.application.routes.draw do
get "/todos", to: "todos#index"
end
```
### Generate a Controller
With Rails, rather than writing controllers from scratch, they can be generated. When Rails generates a controller, it also generates associated unit tests and helpers for the controller. To generate a controller for the `GET /todos` route we just added, run the command:
``` bash
$ bin/rails generate controller Todos index --skip-routes
```
This command generates a `TodoController` with an `index` action. We use `--skip-routes` since we already defined the route we want to use.
The controller we just generated is housed in `app/controllers/todos_controller.rb`. Right now our controller should look like this:
```Ruby
class TodosController < ApplicationController
def index
end
end
```
Notice the lack of code here. This is a great example of "Convention over Configuration." If an action does not render a view explicitly it will default to rendering the view that matches the controller.
### Create a View
One of the things generated alongside our controller was the file `app/views/todos/index.html.erb`, the default view for the `TodoController`. Here we can use HTML and Ruby code to make a template for our data. For now lets just change the file to say hello by adding
```html
<h1>Hello! Welcome to your Todo List!</h1>
```
Now we can navigate to `http://localhost:3000/todos` to see our welcome message. With a handful of commands and even fewer lines of code we now have a _route_ that accesses a _controller_ with an _action_ that renders a _view_!
## Final Thoughts
Rails is a genuinely fun framework to work with. Removing the tedium of writing the same logic over and over for each feature makes development lightning fast. Not only is Rails simple but its also fully fleshed out and powerful, no wonder so many companies opt to use rails for their web apps. While there is a bit of a learning curve once you get into the nitty gritty of fleshing out an app with Rails, I think it is well worth the work. If youre interested in continuing to explore rails, I recommend heading over to the [Rails guides](https://guides.rubyonrails.org/getting_started.html) and following their getting started tutorial. Good luck and have fun developing! | alexphebert2000 | |
1,882,562 | Everything you need to know about monitoring CoreDNS for DNS performance | 📚 Introduction: Running DNS-intensive workloads can sometimes lead to intermittent CoreDNS failures... | 0 | 2024-06-10T04:07:11 | https://dev.to/aws-builders/everything-you-need-to-know-about-monitoring-coredns-for-dns-performance-5hi9 | dns, eks, troubleshooting, monitoring | 📚 Introduction:
Running DNS-intensive workloads can sometimes lead to intermittent [CoreDNS](https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/#coredns) failures caused by DNS throttling. These issues can have a significant impact on your applications.
Such disruptions can hinder the reliability and performance of your services, making it mandatory to have a monitoring solution in place.
AWS offers a suite of open-source tools - CloudWatch, Fluentd, and Grafana - that can be integrated to monitor CoreDNS.
## Introduction to Kubernetes DNS:
Kubernetes relies on [DNS](https://kubernetes.io/docs/tasks/administer-cluster/dns-custom-nameservers/#introduction) for service discovery within clusters. When applications running in pods need to communicate with each other, they often refer to services by their domain names rather than IP addresses.
This is where **Kubernetes DNS comes into play**. It ensures that these domain names are resolved to the correct IP addresses, allowing pods and services to communicate.
In Kubernetes, each pod is assigned a temporary IP address. However, these IP addresses are dynamic and can change over time, making it challenging for applications to keep track of them.
Kubernetes addresses this challenge by assigning fully qualified domain names [FQDNs](https://kubernetes.io/docs/concepts/services-networking/dns-pod-service/#dns-records) to pods and services.
CoreDNS, the default DNS provider in Kubernetes, is responsible for handling DNS queries within the cluster. It maps these FQDNs to the corresponding IP addresses, enabling communication between pods and services.
## Why DNS Issues Are Common:
DNS issues are a common source of frustration in network troubleshooting. DNS plays a big role in translating human-readable domain names into machine-readable IP addresses.
However, DNS problems can arise due to many factors such as misconfigurations, network issues, or server failures. When DNS fails to resolve domain names correctly, applications may experience connectivity issues or fail to access external services.
## CoreDNS in Kubernetes:
[CoreDNS](https://coredns.io/manual/toc/#what-is-coredns) plays an important role in providing DNS services within Kubernetes clusters. As the default DNS provider since Kubernetes v1.13, CoreDNS simplifies cluster networking by enabling clients to access services using DNS names rather than IP addresses. It resolves domain name requests and facilitates service discovery within the cluster.
## How CoreDNS Operates:
CoreDNS operates as a resolver and forwarder for DNS requests within Kubernetes clusters. When a pod needs to communicate with another service, it sends a DNS query to CoreDNS, specifying the domain name of the target service. CoreDNS then resolves this query by mapping the domain name to the corresponding IP address using its internal records.
For external domain names that CoreDNS is not authoritative for, it forwards the DNS query to public resolvers or upstream DNS servers for resolution.
To enhance performance and reduce latency, CoreDNS can cache DNS responses for frequently accessed domain names. This caching mechanism improves the responsiveness of DNS queries and reduces the load on upstream DNS servers.
CoreDNS achieves this functionality through its modular architecture and extensible plugin system, allowing operators to customize and optimize DNS resolution according to their specific requirements.
## Mitigating CoreDNS Throttling in Amazon EKS:
In Amazon EKS clusters, CoreDNS and DNS throttling issues can be challenging to identify and troubleshoot.
While many users focus on monitoring CoreDNS logs and metrics, they often overlook [the hard limit of 1024 packets per second (PPS) enforced](https://docs.aws.amazon.com/vpc/latest/userguide/vpc-dns.html#vpc-dns-limits) at the `Elastic Network Interface (ENI)` level. Understanding how this limit can lead to throttling issues requires insight into the typical DNS resolution flow of a Kubernetes pod.
In a Kubernetes environment, pods must resolve domain names for both internal and external services to enable communication. This resolution process involves routing DNS queries through the `worker node's ENI`, particularly when resolving external endpoints. Even for internal endpoints, if the CoreDNS pod is not co-located with the querying pod, DNS packets still traverse the worker node's ENI.
Consider a scenario where there is a sudden **surge** in DNS queries, causing the PPS to approach the hard limit of 1024. This situation can result in DNS throttling, impacting all microservices running on the affected worker node. Unfortunately, troubleshooting such issues can be hard because the focus tends to be on CoreDNS pods rather than ENI metrics.
To mitigate DNS throttling issues in EKS clusters, it is important to monitor packet drops occurring at the ENI level continuously. This monitoring allows for early detection and prevention of potential outages. In this blog post, we introduce a solution that leverages network performance metrics to identify DNS throttling issues effectively.
### Solution: 🎉
An easy way to identify the DNS throttling issues in worker nodes is by capturing `linklocal_allowance_exceeded` metric provided by `the Elastic Network Adapter (ENA) driver` and other metrics also obviously.
The [linklocal_allowance_exceeded](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/metrics-collected-by-CloudWatch-agent.html#linux-metrics-enabled-by-CloudWatch-agent) is number of packets dropped because the PPS of the traffic to local proxy services exceeded the maximum for the network interface. This impacts traffic to the DNS service, the Instance Metadata Service, and the Amazon Time Sync Service.
Instead of tracking this event in real-time, we can stream this metric to [Amazon Managed Service for Prometheus](https://aws.amazon.com/prometheus/) as well and can have them visualized in [Amazon Managed Grafana](https://aws.amazon.com/grafana/).
## Hands-on: collect and visualize CoreDNS metrics in AWS EKS:
The `CoreDNS` [prometheus](https://coredns.io/plugins/metrics/) plugin exposes metrics in the [OpenMetrics](https://github.com/OpenObservability/OpenMetrics/blob/main/specification/OpenMetrics.md) format, a text-based standard that evolved from the Prometheus format. In a Kubernetes cluster, the plugin is enabled by default, so you can begin monitoring many key metrics as soon as you launch your cluster.
By default, the **`prometheus`** plugin writes metrics to a **`/metrics`** endpoint on port 9153 on each CoreDNS pod.
### Create an Amazon Managed Service for Prometheus workspace and Managed Service for Grafana:
In this step, we will create a workspace for Amazon Managed Service for Prometheus and Managed Service for Grafana:
- the configuration in these files creates:
- AMP workspace
- AMP alert manager definition.
**_main.tf:_**
```
module "prometheus" {
source = "terraform-aws-modules/managed-service-prometheus/aws"
workspace_alias = "demo-coredns"
alert_manager_definition = <<-EOT
alertmanager_config: |
route:
receiver: 'default'
receivers:
- name: 'default'
EOT
rule_group_namespaces = {}
}
```
**_versions.tf:_**
```
terraform {
required_version = ">= 1.3"
required_providers {
aws = {
source = "hashicorp/aws"
version = ">= 5.32"
}
}
}
```
To run the terraform, you need to execute:
```
$ terraform init
$ terraform plan
$ terraform apply
```
the below configuration files create will create:
- Default Grafana workspace (using defaults provided by the module).
**_main.tf:_**
```
provider "aws" {
region = local.region
}
data "aws_availability_zones" "available" {}
locals {
region = "eu-west-1"
name = "amg-ex-${replace(basename(path.cwd), "_", "-")}"
description = "AWS Managed Grafana service for ${local.name}"
vpc_cidr = "10.0.0.0/16"
azs = slice(data.aws_availability_zones.available.names, 0, 3)
}
################################################################################
# Managed Grafana Module
################################################################################
module "managed_grafana" {
source = "../.."
# Workspace
name = local.name
associate_license = false
description = local.description
account_access_type = "CURRENT_ACCOUNT"
authentication_providers = ["AWS_SSO"]
permission_type = "SERVICE_MANAGED"
data_sources = ["CLOUDWATCH", "PROMETHEUS", "XRAY"]
notification_destinations = ["SNS"]
stack_set_name = local.name
grafana_version = "9.4"
configuration = jsonencode({
unifiedAlerting = {
enabled = true
},
plugins = {
pluginAdminEnabled = false
}
})
# vpc configuration
vpc_configuration = {
subnet_ids = module.vpc.private_subnets
}
security_group_rules = {
egress_postgresql = {
description = "Allow egress to PostgreSQL"
from_port = 5432
to_port = 5432
protocol = "tcp"
cidr_blocks = module.vpc.private_subnets_cidr_blocks
}
}
# Workspace API keys
workspace_api_keys = {
viewer = {
key_name = "viewer"
key_role = "VIEWER"
seconds_to_live = 3600
}
editor = {
key_name = "editor"
key_role = "EDITOR"
seconds_to_live = 3600
}
admin = {
key_name = "admin"
key_role = "ADMIN"
seconds_to_live = 3600
}
}
# Workspace IAM role
create_iam_role = true
iam_role_name = local.name
use_iam_role_name_prefix = true
iam_role_description = local.description
iam_role_path = "/grafana/"
iam_role_force_detach_policies = true
iam_role_max_session_duration = 7200
iam_role_tags = { role = true }
tags = local.tags
}
module "managed_grafana_default" {
source = "../.."
name = "${local.name}-default"
associate_license = false
tags = local.tags
}
module "managed_grafana_disabled" {
source = "../.."
name = local.name
create = false
}
################################################################################
# Supporting Resources
################################################################################
module "vpc" {
source = "terraform-aws-modules/vpc/aws"
version = "~> 5.0"
name = local.name
cidr = local.vpc_cidr
azs = local.azs
private_subnets = [for k, v in local.azs : cidrsubnet(local.vpc_cidr, 4, k)]
public_subnets = [for k, v in local.azs : cidrsubnet(local.vpc_cidr, 8, k + 48)]
enable_nat_gateway = false
single_nat_gateway = true
tags = local.tags
}
```
**_versions.tf:_**
```
terraform {
required_version = ">= 1.0"
required_providers {
aws = {
source = "hashicorp/aws"
version = ">= 5.0"
}
}
}
```
To run this code you need to execute:
```
$ terraform init
$ terraform plan
$ terraform apply
```
### Deploying Prometheus ethtool exporter:
[Ethtool](https://linux.die.net/man/8/ethtool) is a Linux tool for configuring and gathering information about Ethernet devices on worker nodes. We will use ethtool's output to detect packet loss and convert it to Prometheus format with a Prometheus ethtool exporter utility.
The deployment contains a Python script that pulls information from ethtool and publishes it in Prometheus format.
```
kubectl apply -f https://raw.githubusercontent.com/Showmax/prometheus-ethtool-exporter/master/deploy/k8s-daemonset.yaml
```
### Deploy ADOT collector to scrape ethtool metrics:
In this step we will deploy the ADOT collector and configure the ADOT collector to ingest metrics to Amazon Managed Service for Prometheus.
We will be using the [Amazon EKS add-on for ADOT operator](https://docs.aws.amazon.com/eks/latest/userguide/opentelemetry.html) to send the metrics "linklocal_allowance_exceeded" to Amazon Managed Service for Prometheus for monitoring CoreDNS.
### Create an IAM role and Amazon EKS Service Account:
We will be deploying the ADOT collector to run under the identity of a Kubernetes service account "adot-collector".
`IAM roles for service accounts (IRSA)` lets you associate the **_AmazonPrometheusRemoteWriteAccess_** role with a Kubernetes service account, thereby providing IAM permissions to any pod utilizing the service account to ingest the metrics to Amazon Managed Service for Prometheus.
You need kubectl and eksctl CLI tools to run the script. They must be configured to access your Amazon EKS cluster.
```
eksctl create iamserviceaccount \
--name adot-collector \
--namespace default \
--region eu-west-1\
--cluster coredns-monitoring-demo\
--attach-policy-arn arn:aws:iam::aws:policy/AmazonPrometheusRemoteWriteAccess \
--approve \
--override-existing-serviceaccounts
```
### Install ADOT add-on:
You can check the list of add-ons enabled for different versions of Amazon EKS using the following command:
Determine the ADOT versions that are available that are supported by your cluster's version.
```
aws eks describe-addon-versions --addon-name adot --kubernetes-version 1.28 \
--query "addons[].addonVersions[].[addonVersion, compatibilities[].defaultVersion]" --output text
```
Run the following command to install the ADOT add-on, replace the –addon-version flag based on your Amazon EKS cluster version as show in step above.
```
aws eks create-addon --addon-name adot --addon-version v0.66.0-
eksbuild.1 --cluster-name coredns-monitoring-demo
```
Verify that ADOT add-on is ready using the following command.
```
kubectl get po -n opentelemetry-operator-system
```
The following procedure uses an example YAML file with deployment as the mode value. This is the default mode and deploys the ADOT Collector similarly to a standalone application. This configuration receives OTLP metrics from the sample application and Amazon Managed Service for Prometheus metrics scraped from pods on the cluster
```
curl -o collector-config-amp.yaml https://raw.githubusercontent.com/aws-observability/aws-otel-community/master/sample-configs/operator/collector-config-amp.yaml
```
In collector-config-amp.yaml, replace the following with your own values:
_*** mode: deployment * serviceAccount: adot-collector * endpoint: "" * region: "" * name: adot-collector**_
```
kubectl apply -f collector-config-amp.yaml
```
Once the adot collector is deployed, the metrics will be stored successfully in Amazon Prometheus.
### Visualize ethtool metrics in Amazon Managed Grafana:
Configure the Amazon Managed Service for Prometheus workspace as a datasource inside the Amazon Managed Grafana console.
Let's explore the metrics in Amazon Managed Grafana now: Click the explore button, and search for ethtool:
Let's build a dashboard for the linklocal_allowance_exceeded metric by using the query:
```
rate(node_net_ethtool{device="eth0",type="linklocal_allo
wance_exceeded"} [30s])
```
We can see that there were no packets dropped as the value is zero. You can further extend this by configuring alerts in the alert manager in Amazon Managed Service for Prometheus to send notifications.
## Conclusion:
In this post, we showed how to monitor and create alerts for CoreDNS throttling issues using AWS Distro for OpenTelemetry (ADOT), Amazon Managed Service for Prometheus, and Amazon Managed Grafana. By monitoring the coreDNS metrics, customers can proactively detect packet drops and take preventive actions.
**_Until next time 🎉_**
Thank you for Reading !! 🙌🏻😁📃, see you in the next blog.🤘
🚀 Thank you for sticking up till the end. If you have any questions/feedback regarding this blog feel free to connect with me:
♻️ LinkedIn: https://www.linkedin.com/in/rajhi-saif/
♻️Twitter : https://twitter.com/rajhisaifeddine
The end ✌🏻
**_🔰 Keep Learning !! Keep Sharing !! 🔰
References:_**
https://cilium.io/blog/2019/12/18/how-to-debug-dns-issues-in-k8s/
https://sysdig.com/blog/how-to-monitor-coredns/
https://www.datadoghq.com/blog/coredns-metrics/
https://www.datadoghq.com/blog/coredns-monitoring-tools/
https://aws.amazon.com/blogs/mt/monitoring-coredns-for-dns-throttling-issues-using-aws-open-source-monitoring-services/
| seifrajhi |
1,882,744 | Optimize Blog Management with Angular Gantt Chart | TL;DR: Syncfusion Angular Gantt Chart is a project planning and management tool. The blog outlines... | 0 | 2024-06-19T02:38:19 | https://www.syncfusion.com/blogs/post/blog-management-angular-gantt-chart | angular, development, gantt, web | ---
title: Optimize Blog Management with Angular Gantt Chart
published: true
date: 2024-06-10 04:01:07 UTC
tags: angular, development, gantt, web
canonical_url: https://www.syncfusion.com/blogs/post/blog-management-angular-gantt-chart
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/ygio0z3pmh183xxwgj99.png
---
**TL;DR:** Syncfusion Angular Gantt Chart is a project planning and management tool. The blog outlines the steps to integrate and use the Gantt Chart for blog management, including defining data sources, installing necessary packages, configuring columns, establishing task dependencies, and allocating resources.
In today’s digital age, managing blogs is one essential way to successfully reach the market audience. From content planning to publication schedules, keeping everything organized can be challenging. However, with tools like the Syncfusion [Angular Gantt Chart](https://www.syncfusion.com/angular-components/angular-gantt-chart), blog management becomes streamlined and effective.
In this blog, we’ll explore how you can enhance your blog management process using the Syncfusion Angular Gantt Chart.
## Why use the Gantt Chart for blog management?
A Gantt Chart is a powerful project management tool that visualizes tasks over time. It provides a clear overview of project schedules, dependencies, and progress. When applied to blog management, a Gantt Chart offers several benefits:
1. **Visualization:** Easily visualize blog titles, publication dates, and task dependencies.
2. **Efficient resource allocation:** Allocate resources effectively by assigning tasks to team members.
3. **Timeline management:** Manage blog timelines and deadlines efficiently.
4. **Track progress:** Monitor the progress of each blog and ensure timely publication.
5. **Collaboration:** Foster collaboration among team members by sharing a centralized view of blog-related tasks.
## Getting started with Syncfusion Angular Gantt Chart
The Angular Gantt Chart is a feature-rich component that offers comprehensive project management capabilities. It provides all the benefits we discussed above and many more features, which you can see on this [feature tour](https://www.syncfusion.com/angular-components/angular-gantt-chart "Angular Gantt Chart") page.
Let’s start using the Syncfusion Angular Gantt Chart. Refer to the [documentation](https://ej2.syncfusion.com/angular/documentation/gantt/getting-started "Getting started with Angular Gantt Chart component") to create a simple Syncfusion Gantt Chart in your Angular app.
## Blog management with Angular Gantt Chart
Follow these steps to get started for blog management using Angular Gantt Chart:
### Step 1: Define the data source
Assume you possess the data source containing blog information, including title and timeline details, like in the following code example. We’ll see how to visualize this data in the Angular Gantt Chart with a timeline.
```js
export let blogData: Object[] = [
{
TaskID: 1,
BlogName: 'Gantt Blogs',
StartDate: new Date('04/02/2024'),
EndDate: new Date('05/10/2024'),
subtasks: [
{
TaskID: 2,
BlogName:
'Using Microsoft Project Files with Syncfusion JavaScript Gantt Chart',
StartDate: new Date('04/02/2024'),
EndDate: new Date('04/10/2024'),
Progress: 100,
resources:[1]
},
{
TaskID: 3,
BlogName: 'Solution to handling Large Data set in Blazor Gantt Chart',
StartDate: new Date('04/08/2024'),
EndDate: new Date('04/23/2024'),
Progress: 55,
resources:[2]
},
…
]
```
### Step 2: Install the Syncfusion Gantt package
Execute the following command within your Angular app to install the Syncfusion Gantt package.
```
ng add @syncfusion/ej2-angular-gantt --save
```
### Step 3: Integrate the GanttModule
In the **app.module.ts** file, include **GanttModule** within the **NgModule** imports. Refer to the following code example.
```js
import { NgModule } from '@angular/core';
import { BrowserModule } from '@angular/platform-browser';
// Import the GanttModule for the Gantt component.
import { GanttModule } from '@syncfusion/ej2-angular-gantt';
import { AppComponent } from './app.component';
@NgModule({
//Declaration of ej2-angular-gantt module into NgModule.
imports: [BrowserModule, GanttModule],
declarations: [AppComponent],
bootstrap: [AppComponent]
})
export class AppModule { }
```
### Step 4: Add the CSS reference
In the **src/style.css** file, add the CSS reference for the Syncfusion Angular Gantt Chart component.
```js
@import '../node_modules/@syncfusion/ej2-material-theme/styles/material.css';
```
### Step 5: Incorporate the Angular Gantt Chart
Now, include the Angular Gantt Chart component code within the **src/app/app.component.html** file, configure the data source, and map the field names of the datasource to gantt using the [taskFields](https://ej2.syncfusion.com/angular/documentation/api/gantt/#taskfields "taskFields property of Angular Gantt Chart") property.
```js
<ejs-gantt id="ganttDefault" height="450px" [treeColumnIndex]="1" [dataSource]="data" [taskFields]="taskSettings">
</ejs-gantt>
export class AppComponent{
public ngOnInit(): void {
this.data = blogData;
this.taskSettings = {
id: 'TaskID',
name: 'BlogName',
startDate: 'StartDate',
endDate: 'EndDate',
duration: 'Duration',
progress: 'Progress'
child: 'subtasks',
};
}
```
**Note:** You can look at the complete datasource structure on [GitHub](https://github.com/SyncfusionExamples/angular-gantt-chart-blog-management/blob/master/src/app/datasource.ts "Datasource").
### Step 6: Run the app
Now, launch the app, and you’ll observe the list of blogs with their planned timeline in the Angular Gantt Chart, as shown following image.
<figure>
<img src="https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Visualizing-blog-data-using-Syncfusion-Angular-Gantt-Chart.png" alt="Visualizing blog data using Syncfusion Angular Gantt Chart" style="width:100%">
<figcaption>Visualizing blog data using Syncfusion Angular Gantt Chart</figcaption>
</figure>
In this image, the data source records are displayed as a table in the left-side grid, and the timeline with the progress of each blog task is displayed using a taskbar in the timeline view in the right-side chart.
However, the columns’ widths are small. So, next, we’ll see how to customize the columns’ appearance to suit our needs.
## Define column configurations and dependencies between tasks
Follow these steps to define the column configurations and dependencies between the tasks.
### Step 1: Define column configurations
Let’s modify the Gantt Chart’s column layout to enhance blog management effectiveness. Utilize the [e-columns](https://ej2.syncfusion.com/angular/documentation/api/gantt/columnDirective/ "ColumnDirective API in Angular Gantt API component") directive of Gantt to make changes, such as adjusting the header text and column width.
```js
<ejs-gantt id="ganttDefault" height="450px" [treeColumnIndex]="1" [dataSource]="data" [taskFields]="taskSettings">
<e-columns>
<e-column field='TaskID' [visible]="false"></e-column>
<e-column field='BlogName' headerText="Name" [width]="300"></e-column>
<e-column field='resources' headerText="Resources" [width]="200"></e-column>
<e-column field='StartDate'></e-column>
<e-column field='EndDate'></e-column>
<e-column field='Duration'></e-column>
<e-column field='Predecessor'></e-column>
<e-column field='Progress'></e-column>
</e-columns>
</ejs-gantt>
```
### Step 2: Establish task dependency
Some blogs may have multiple parts, and the 2_nd_ part should start after 1_st_ part blog completion. In such cases, we can create dependence between tasks. For instance, the blog task, **Using JavaScript Gantt Chart in SharePoint Web Parts for Effective Project Management,** has two parts, so the second should be completed only after completing the first one.
In this case, we’ll create a **Finish-To-Start** dependency by using a field in the datasource and mapping that field name to the [dependency](https://ej2.syncfusion.com/angular/documentation/api/gantt/taskFields/#dependency "dependency property of Angular Gantt Chart") property of **taskSettings.** In this blog example, we have the field name Predecessor in the data source and dependency as **5FS,** which means Finish-To-Start dependency with Task ID **5**.
```js
export class AppComponent{
public ngOnInit(): void {
this.taskSettings = {
id: 'TaskID',
name: 'BlogName',
startDate: 'StartDate',
endDate: 'EndDate',
duration: 'Duration',
progress: 'Progress',
dependency: 'Predecessor',
};
```
**//datasource.ts**
```js
{
TaskID: 5,
BlogName:
'Using JavaScript Gantt Chart in SharePoint Web Parts for Effective Project Management: Part 1',
StartDate: new Date('04/24/2024'),
EndDate: new Date('05/05/2024'),
Progress: 90
},
{
TaskID: 6,
BlogName:
'Using JavaScript Gantt Chart in SharePoint Web Parts for Effective Project Management: Part 2',
StartDate: new Date('05/06/2024'),
EndDate: new Date('05/10/2024'),
Predecessor: '5FS',
Progress: 53
},
```
Now, upon implementation, visualize the task dependencies using arrow lines, aiding users in understanding the task relationships.
<figure>
<img src="https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Defination-of-Columns-configurations-and-Dependencies-between-task.png" alt="Adding dependency between tasks using Syncfusion Angular Gantt Chart" style="width:100%">
<figcaption>Adding dependency between tasks using Syncfusion Angular Gantt Chart</figcaption>
</figure>
## Resource allocation
After defining column configurations and establishing dependencies between tasks, the next crucial step is resource allocation. To allocate resources effectively, we need to follow a series of steps. Let’s delve into them.
### Step 1: Resource allocation
Now, the blog tasks are displayed alone, and we cannot see the resources working on the tasks. Visualizing resource names helps in understanding resource utilization. We can add more information by adding resource details using the [resources](https://ej2.syncfusion.com/angular/documentation/api/gantt/#resources "resources property of Angular Gantt Chart") property of gantt, which contains the list of resources, and the [resourceFields](https://ej2.syncfusion.com/angular/documentation/api/gantt/#resourcefields "resourceFields property of Angular Gantt Chart") property that maps the field names of resource datasource.
### Step 2: Integrating resource data
The resource data for each task is provided within each data object of the task collection as a nested collection. This nested collection holds the **resourceID**, which behaves like a foreign key with the **resource** datasource. The field name holds the resource details as a nested collection in the task datasource. We should map the field name to the [resourceInfo](https://ej2.syncfusion.com/angular/documentation/api/gantt/taskFields/#resourceinfo "resourceInfo property of Angular Gantt Chart") property of the **taskFields**.
```js
<ejs-gantt id="ganttDefault" height="450px" [treeColumnIndex]="1" [dataSource]="data" [splitterSettings]="splitterSettings"
[taskFields]="taskSettings" [resources]="projectResources"
[resourceFields]="resourceFields">
<e-columns>
<e-column field='TaskID' [visible]="false"></e-column>
<e-column field='BlogName' headerText="Name" [width]="300"></e-column>
<e-column field='resources' headerText="Resources" [width]="200"></e-column>
<e-column field='StartDate'></e-column>
<e-column field='EndDate'></e-column>
<e-column field='Duration'></e-column>
<e-column field='Predecessor'></e-column>
<e-column field='Progress'></e-column>
</e-columns>
</ejs-gantt>
export class AppComponent{
public projectResources: Object[] = [ // Resource data source
{ resourceId: 1, resourceName: 'Martin Tamer'},
{ resourceId: 2, resourceName: 'Rose Fuller' },
{ resourceId: 3, resourceName: 'Margaret Buchanan' },
{ resourceId: 4, resourceName: 'Fuller King'}, // here resourceId is the foriegnkey
{ resourceId: 5, resourceName: 'Davolio Fuller' },
{ resourceId: 6, resourceName: 'Van Jack' },
];
public ngOnInit(): void {
this.taskSettings = {
id: 'TaskID',
name: 'BlogName',
startDate: 'StartDate',
endDate: 'EndDate',
duration: 'Duration',
progress: 'Progress',
dependency: 'Predecessor',
child: 'subtasks',
resourceInfo: 'resources'
};
this.resourceFields = { //mapping resource field in resource datasource
id: 'resourceId',
name: 'resourceName'
};
```
**//datasource.ts – Resource data’s foreignkey value is provided to task collection as a nested collection**
```js
{
TaskID: 5,
BlogName:
'Using JavaScript Gantt Chart in SharePoint Web Parts for Effective Project Management: Part 1',
StartDate: new Date('04/24/2024'),
EndDate: new Date('05/05/2024'),
Progress: 90,
resources:[3]
},
{
TaskID: 6,
BlogName:
'Using JavaScript Gantt Chart in SharePoint Web Parts for Effective Project Management: Part 2',
StartDate: new Date('05/06/2024'),
EndDate: new Date('05/10/2024'),
Predecessor: '5FS',
Progress: 53,
resources:[4]
},
```
### Step 3: Add taskbar labels
Add labels displaying resource names next to taskbars using the [labelSettings](https://ej2.syncfusion.com/angular/documentation/api/gantt/#labelsettings "labelSettings property of Angular Gantt Chart") property to provide clear visibility.
```js
<ejs-gantt id="ganttDefault" height="450px" [treeColumnIndex]="1" [dataSource]="data"
[taskFields]="taskSettings" [resources]="projectResources"
[resourceFields]="resourceFields"> [labelSettings]="labelSettings" … >
export class AppComponent{
public ngOnInit(): void {
this.labelSettings = {rightLabel: 'resources'};
…
}
}
```
### Step 4: Viewing resource allocation
Launch the application to observe the assigned resources for each blog task in the grid column and Gantt Chart.
<figure>
<img src="https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Allocating-resources-for-each-blog-task.png" alt="Allocating resources for each blog task" style="width:100%">
<figcaption>Allocating resources for each blog task</figcaption>
</figure>
## Resource view
The tasks in the above view are arranged in a hierarchy based on the tasks (parent and child tasks). We can also change the Gantt Chart view to **Resource View**, in which the resource names are displayed in the parent row, and the corresponding resource’s task details are in its child row.
We can easily switch to Resource View by setting the [viewType](https://ej2.syncfusion.com/angular/documentation/api/gantt/#viewtype "viewType property of Angular Gantt Chart") property to **ResoureView.**
```js
<ejs-gantt id="ganttDefault"
…
viewType="ResourceView">
</ejs-gantt>
```
Refer to the following image.
<figure>
<img src="https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Using-resource-view-for-blog-management-in-Angular-Gantt-Chart.png" alt="Using resource view for blog management in Angular Gantt Chart" style="width:100%">
<figcaption>Using resource view for blog management in Angular Gantt Chart</figcaption>
</figure>
## Editing the blog tasks
While working on a project, the plan may change dynamically. After the initial planning, when any changes happen, we can easily update the changes in the Gantt Chart by enabling the editing feature using the [editSettings](https://ej2.syncfusion.com/angular/documentation/api/gantt/#editsettings "editSettings property of Angular Gantt Chart") property.
```js
<ejs-gantt id="ganttDefault" height="450px" [treeColumnIndex]="1" [dataSource]="data" [splitterSettings]="splitterSettings"
[taskFields]="taskSettings" [toolbar]="toolbar" [editSettings]="editSettings" [labelSettings]="labelSettings"
[projectStartDate]="projectStartDate" [projectEndDate]="projectEndDate" [resources]="projectResources"
[resourceFields]="resourceFields" viewType="ResourceView">
<e-columns>
<e-column field='TaskID' [visible]="false"></e-column>
<e-column field='BlogName' headerText="Name" [width]="300"></e-column>
<e-column field='resources' headerText="Resources" [width]="200"></e-column>
<e-column field='StartDate'></e-column>
<e-column field='EndDate'></e-column>
<e-column field='Duration'></e-column>
<e-column field='Predecessor'></e-column>
<e-column field='Progress'></e-column>
</e-columns>
</ejs-gantt>
export class AppComponent{
public ngOnInit(): void {
this.data = blogData;
this.projectStartDate = new Date('03/31/2024');
this.labelSettings = {rightLabel: 'resources'};
this.splitterSettings = { columnIndex: 3 };
this.projectEndDate= new Date('05/05/2024');
this.editSettings = {
allowAdding: true,
allowEditing: true,
allowDeleting: true,
allowTaskbarEditing: true,
showDeleteConfirmDialog: true,
};
this.resourceFields = {
id: 'resourceId',
name: 'resourceName'
};
this.taskSettings = {
id: 'TaskID',
name: 'BlogName',
startDate: 'StartDate',
endDate: 'EndDate',
duration: 'Duration',
progress: 'Progress',
dependency: 'Predecessor',
child: 'subtasks',
resourceInfo: 'resources'
};
this.toolbar = [
'Add',
'Edit',
'Update',
'Delete',
'Cancel',
'ExpandAll',
'CollapseAll',
];
}
```
Refer to the following image.
<figure>
<img src="https://www.syncfusion.com/blogs/wp-content/uploads/2024/06/Editing-blog-task-details-in-Angular-Gantt-Chart.gif" alt="Editing blog task details in Angular Gantt Chart" style="width:100%">
<figcaption>Editing blog task details in Angular Gantt Chart</figcaption>
</figure>
## GitHub reference
For more details, refer to the [Blog management with Angular Gantt Chart GitHub demo](https://github.com/SyncfusionExamples/angular-gantt-chart-blog-management "Blog management with Angular Gantt Chart GitHub demo").
## Conclusion
Thanks for reading! This blog shows how to effectively manage blogs, improve collaboration among team members, and ensure timely publication of high-quality content using the [Syncfusion Angular Gantt Chart](https://www.syncfusion.com/angular-components/angular-gantt-chart "Angular Gantt Chart"). Try out the steps in this blog and share your feedback in the comments section below!
The new version of Essential Studio is available for existing customers on the [License and Downloads](https://www.syncfusion.com/account/login "Essential Studio License and Downloads page") page. If you’re not a Syncfusion customer, sign up for our [30-day free trial](https://www.syncfusion.com/downloads "Get free evaluation of the Essential Studio products") to explore our features.
If you have any questions, you can reach 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’re always here to assist you!
## Related blogs
- [Explore Advanced PDF Exporting in Angular Pivot Table](https://www.syncfusion.com/blogs/post/pdf-exporting-angular-pivot-table "Blog: Explore Advanced PDF Exporting in Angular Pivot Table")
- [What’s New in Angular 18?](https://www.syncfusion.com/blogs/post/whats-new-in-angular-18 "Blog: What’s New in Angular 18?")
- [Advanced Query Building Techniques in Angular: Queries with Different Connectors](https://www.syncfusion.com/blogs/post/angular-query-building-techniques-with-connectors "Blog: Advanced Query Building Techniques in Angular: Queries with Different Connectors")
- [Unveiling the New Angular 3D Circular Charts Component](https://www.syncfusion.com/blogs/post/angular-3d-circular-charts "Blog: Unveiling the New Angular 3D Circular Charts Component") | gayathrigithub7 |
1,882,558 | The Ultimate Guide to Social Media Marketing for Businesses | Introduction Welcome to the ultimate guide to social media marketing for businesses! In today's... | 0 | 2024-06-10T03:51:46 | https://dev.to/cornelius_zieme_1c02fa34d/the-ultimate-guide-to-social-media-marketing-for-businesses-g5g | webdev, business, socialmedia |
Introduction
Welcome to the ultimate guide to social media marketing for businesses! In today's digital age, social media isn't just for sharing selfies and funny cat videos—it's a powerful tool that businesses can leverage to reach their target audience, build brand awareness, and drive sales. But diving into social media marketing can be overwhelming without the right guidance. This comprehensive guide will walk you through everything you need to know to create a successful social media strategy for your business.
Understanding the Basics
Defining Your Goals
Before you start posting on social media, it's crucial to define your goals. Are you aiming to enhance brand visibility, generate potential leads, or increase sales? Establishing clear objectives will direct your strategy and provide a means to assess its effectiveness.
Identifying Your Target Audience
Understanding your target audience is a significant part of the challenge. Identify your target audience by considering factors like age, gender, location, interests, and online behavior. Platforms such as Facebook Insights and Google Analytics offer invaluable information about your audience.
Choosing the Right Platforms
Not all social media platforms are created equal. Every platform serves distinct demographics and content formats. For example, LinkedIn is great for B2B marketing, while Instagram and TikTok are ideal for visually-driven B2C campaigns. Select platforms that match your objectives and target audience.
Creating a Social Media Strategy
Conducting a Social Media Audit
A social media audit involves reviewing your current social media presence. Analyze which platforms you’re active on, assess your performance, and identify areas for improvement. This will provide a baseline for your new strategy.
Developing a Content Calendar
Consistency is key in [social media marketing](https://buysocialpack.net/product/buy-linkedin-accounts/). A content calendar helps you plan and schedule your posts in advance, ensuring a steady flow of content. It also allows you to balance different types of content and align your posts with holidays, events, and promotions.
Setting SMART Goals
SMART goals are defined by their specificity, measurability, achievability, relevance, and time-bound nature. Instead of setting a vague goal like "increase followers," aim for "gain 500 new followers on Instagram in three months." SMART goals provide clear direction and benchmarks for success.
Content Creation and Curation
Types of Content
Variety is essential in keeping your audience engaged. Mix it up with different types of content such as blog posts, videos, infographics, and live streams. Each type has its own strengths and can appeal to different segments of your audience.
Tips for Creating Engaging Content
Engaging content is the heart of social media marketing. Keep your posts relevant, informative, and entertaining. Use high-quality visuals, write compelling captions, and include calls to action to encourage interaction.
Using User-Generated Content
User-generated content (UGC) is a goldmine for marketers. It builds trust and authenticity, showing potential customers real-life examples of your product or service. Motivate your followers to share their experiences and showcase their content on your profiles.
Building a Strong Brand Presence
Consistent Branding Across Platforms
Your brand should have a cohesive look and feel across all social media platforms. Use the same logos, color schemes, and tone of voice to create a recognizable brand identity. Consistency builds trust and helps you stand out in a crowded market.
Crafting a Unique Voice
Your brand voice is the manner in which you convey messages to your audience. It should reflect your brand's personality and values. Whether it's friendly, professional, or quirky, a unique voice helps humanize your brand and connect with your audience on a personal level.
Utilizing Visual Elements
People are more likely to share and remember visual content compared to text-only posts.
Incorporate eye-catching images, videos, and graphics into your content. Tools like Canva and Adobe Spark make it easy to create professional-quality visuals, even if you’re not a designer.
Growing Your Audience
Strategies for Increasing Followers
Growing your social media following requires a combination of organic and paid strategies. Post consistently, engage with your audience, and use hashtags to increase visibility. Hosting contests and giveaways can also entice new followers.
Engaging with Your Audience
Social media is a two-way street.Reply swiftly to comments, messages, and mentions to demonstrate to your audience the importance you place on their feedback.
Engaging with your followers builds relationships and fosters loyalty.
Leveraging Influencers and Partnerships
Collaborating with influencers and other businesses can expand your reach. Choose partners who align with your brand values and have a genuine connection with their followers. Engaging in influencer marketing can offer a substantial uplift to your social media endeavors.
Social Media Advertising
Understanding Paid Social Media
Paid social media allows you to reach a larger audience than organic posts alone. It includes various ad formats like sponsored posts, display ads, and video ads. Paid advertising can be targeted based on demographics, interests, and behaviors, making it highly effective.
Setting Up Ad Campaigns
Setting up a social media ad campaign involves selecting your objectives, defining your audience, creating your ad, and setting a budget. Platforms like Facebook Ads Manager and LinkedIn Campaign Manager provide tools to manage your campaigns and track performance.
Measuring Ad Performance
To determine the success of your ad campaigns, track key metrics such as impressions, clicks, conversions, and ROI. Analyzing these metrics helps you understand what works and what doesn’t, allowing you to refine your strategy.
Analytics and Metrics
Key Metrics to Track
Metrics are vital for measuring the effectiveness of [your social media strategy](https://buysocialpack.net/product/buy-linkedin-connections/). Key metrics include reach, engagement, follower growth, click-through rates, and conversion rates. These insights help you gauge performance and make data-driven decisions.
Tools for Social Media Analytics
Several tools can help you monitor and analyze your social media performance. Hootsuite, Sprout Social, and Google Analytics offer comprehensive analytics features that provide valuable insights into your audience and content.
Using Data to Improve Strategy
Data-driven decision-making is crucial for [social media success](https://buysocialpack.net/product/buy-instagram-accounts/). Consistently analyze your analytics to pinpoint trends and areas ripe for enhancement. Use this data to tweak your strategy, experiment with new content types, and optimize your campaigns.
| cornelius_zieme_1c02fa34d |
1,880,237 | Building a Bulletproof CI/CD Pipeline: A Comprehensive Guide | Welcome Aboard Week 2 of DevSecOps in 5: Your Ticket to Secure Development Superpowers! _Hey there,... | 27,560 | 2024-06-10T03:49:00 | https://dev.to/gauri1504/building-a-bulletproof-cicd-pipeline-a-comprehensive-guide-3jg3 | devsecop, devops, cloud, security | Welcome Aboard Week 2 of DevSecOps in 5: Your Ticket to Secure Development Superpowers!
_Hey there, security champions and coding warriors!
Are you itching to level up your DevSecOps game and become an architect of rock-solid software? Well, you've landed in the right place! This 5-week blog series is your fast track to mastering secure development and deployment.
Get ready to ditch the development drama and build unshakeable confidence in your security practices. We're in this together, so buckle up, and let's embark on this epic journey!_
---
The software development landscape is in a constant state of flux. Faster release cycles, evolving technologies, and the ever-increasing need for quality are pushing teams to adopt agile methodologies and embrace automation. Enter CI/CD pipelines – the workhorses behind streamlining software delivery. This blog delves deep into the world of CI/CD, providing a comprehensive guide from getting started to exploring advanced techniques.
## Why CI/CD Pipelines Are Your Secret Weapon
Before diving in, let's understand the undeniable benefits of CI/CD pipelines:
#### Faster Time to Market:
Gone are the days of lengthy release cycles. CI/CD automates the build, test, and deployment processes, enabling frequent and faster deployments. New features reach users quicker, keeping them engaged and fostering a competitive edge.
Example: Imagine a company developing a new e-commerce platform. By implementing a CI/CD pipeline, they can automate the deployment of new features like improved search functionality or a faster checkout process. This allows them to quickly respond to user feedback and market trends, staying ahead of the competition.
#### Improved Software Quality:
Imagine catching bugs early and preventing regressions before they impact production. CI/CD integrates automated testing throughout the pipeline. Unit tests, integration tests, and even end-to-end tests can be seamlessly integrated, ensuring code quality at every stage.
Example: A company developing a financial services application can leverage a CI/CD pipeline with robust unit and integration tests. This ensures critical functionalities like account management and transaction processing are thoroughly tested before reaching production, minimizing the risk of errors and financial losses.
#### Increased Collaboration and Efficiency:
CI/CD fosters collaboration by breaking down silos between development and operations teams. Developers write code with confidence, knowing automated testing provides a safety net. Operations teams benefit from predictable and streamlined deployments. This fosters a culture of shared ownership and responsibility.
Example: In a traditional development process, developers might throw code "over the wall" to operations, leading to finger-pointing and delays. With a CI/CD pipeline, both teams are involved throughout the process. Developers can see how their code performs in automated tests, while operations have greater visibility into upcoming deployments. This fosters smoother collaboration and faster issue resolution.
## Setting Up Your First CI/CD Pipeline (It's Not Just About Jenkins)
While Jenkins remains a popular choice, the CI/CD landscape offers a plethora of tools to cater to your specific needs. Here are some popular contenders, along with a brief overview of their strengths:
#### GitLab CI/CD:
Tightly integrated with GitLab for seamless version control and DevOps workflows. Ideal for teams already using GitLab for code management.
#### CircleCI:
Cloud-based platform known for its ease of use, scalability, and focus on developer experience. A good choice for teams looking for a user-friendly and scalable solution.
#### Azure DevOps:
Comprehensive DevOps toolchain from Microsoft, offering CI/CD pipelines alongside other features like build management and artifact repositories. Well-suited for organizations heavily invested in the Microsoft ecosystem.
#### Travis CI:
Open-source platform known for its simplicity and focus on continuous integration. A good option for smaller teams or those starting with CI/CD.
Now, let's explore the common stages of a CI/CD pipeline and their purposes:
#### Code Commit:
The trigger point where changes are pushed to a version control system (VCS) like Git.
#### Build:
The code is compiled into a deployable artifact (e.g., executable file, WAR file).
#### Test:
Automated tests are run against the built artifact to identify any bugs or regressions.
#### Deploy:
Upon successful testing, the artifact is deployed to the target environment (staging, production).
#### Sample CI/CD Workflow Configuration (Using GitLab CI/CD):
```
stages:
- build
- test
- deploy
build:
stage: build
script:
- npm install
- npm run build
test:
stage: test
script:
- npm run test
deploy:
stage: deploy
script:
- scp -r dist/ user@server_ip:/var/www/html/my_app
only:
- master
```
## Integrating Version Control with CI/CD: The Power of Automation
VCS plays a crucial role in CI/CD pipelines. Here's how it all works:
#### Version Control Systems (VCS):
Tools like Git track code changes, allowing developers to collaborate and revert to previous versions if needed. CI/CD pipelines leverage this functionality to ensure traceability and facilitate rollbacks in case of deployment failures.
#### Triggers for Pipeline Execution:
CI/CD pipelines can be configured to automatically trigger on specific events within the VCS. Common triggers include:
#### Code Commits:
The pipeline kicks off whenever a developer pushes code changes to a specific branch.
#### Merges to Specific Branches:
Pipelines can be triggered only when code is merged into specific branches, such as master or staging. This allows for more control over deployments.
#### Tags Being Pushed:
Pushing a tag to a repository can trigger a pipeline, often used for deployments associated with releases.
#### Branching Strategies:
CI/CD pipelines can be tailored to work with different branching strategies. Here are two common approaches:
#### Feature Branch Workflow:
Developers create feature branches for development work. Upon completion and code review, code is merged into the main branch (e.g., master), triggering the CI/CD pipeline for deployment. This approach allows for isolated development and testing of new features.
#### Git Flow Workflow:
This strategy utilizes a dedicated develop branch for ongoing development. Features are branched from develop and merged back after testing. Merges to develop trigger the CI/CD pipeline for deployment to a staging environment. Finally, a manual promotion is required to deploy from develop to production. This approach offers a clear separation between development, staging, and production environments.
#### Choosing a Branching Strategy:
The optimal strategy depends on your team size, project complexity, and desired level of control over deployments. Feature branch workflows are suitable for smaller teams with simpler projects. Git Flow offers more control and separation of environments for larger teams or complex projects.
## Continuous Delivery vs. Continuous Deployment:
Know the Difference
These terms are often used interchangeably, but there's a key distinction:
#### Continuous Deployment:
Changes are automatically deployed to production upon successful completion of the pipeline. This approach requires robust testing and a high degree of confidence in the code quality. It's ideal for applications with low risk tolerance and a focus on rapid iteration.
Example: A company developing a social media application might leverage continuous deployment for features that don't impact core functionalities. Automated testing ensures quality, and rapid deployments allow for quick experimentation and feature rollouts.
#### Continuous Delivery:
The pipeline automates build, test, and deployment to a staging environment. Manual approval is required before deploying to production. This approach offers a safety net for critical applications and allows for human oversight before pushing changes live.
Example: A company developing a financial trading platform would likely benefit from continuous delivery. After successful pipeline execution, deployments are staged and reviewed before being pushed to production. This ensures critical functionalities are thoroughly tested and approved before impacting real-world transactions.
#### Choosing the Right Strategy:
The choice between continuous deployment and continuous delivery depends on factors like:
#### Risk Tolerance:
For applications with high risk or impact, continuous delivery with manual approval might be preferred.
#### Application Criticality:
Mission-critical applications might benefit from the additional safety net of manual approval before production deployment.
#### Testing Coverage:
Robust and comprehensive testing is crucial for continuous deployment. If testing is less extensive, continuous delivery with manual review might be a safer option.
#### Rollback Strategies: Always Have a Plan B
No matter how meticulous your CI/CD pipeline is, unforeseen issues can arise. Having a rollback strategy in place ensures you can quickly revert to a stable state:
### Version Control to the Rescue:
VCS allows you to easily revert to a previous code commit if a deployment introduces problems. This is a quick and reliable way to rollback deployments.
#### Rollback Scripts:
Define scripts within your CI/CD pipeline that can automatically rollback deployments in case of failures. This can involve reverting infrastructure changes or downgrading configurations. These scripts offer a more automated approach to rollbacks.
#### Blue/Green Deployments:
This strategy involves deploying the new version to a separate environment (green) while keeping the existing version running (blue). If the new version works as expected, traffic is switched to the green environment. In case of issues, switching back to blue is seamless. Blue/green deployments minimize downtime during rollbacks.
#### Choosing a Rollback Strategy:
The best approach depends on your specific needs. VCS rollbacks are simple and reliable but require manual intervention. Rollback scripts offer automation but require careful design and testing. Blue/green deployments provide a more robust rollback approach but might require additional infrastructure setup.
## Taking Your CI/CD Pipeline to the Next Level
#### CI/CD Pipeline Security:
Security is paramount in any software development process, and CI/CD pipelines are no exception. Here are some best practices to secure your pipelines:
#### Manage Secrets:
Store sensitive information like passwords, API keys, and database credentials securely using secrets management tools. These tools encrypt secrets and restrict access to authorized users and applications within the CI/CD pipeline.
#### Restrict Access Controls:
Define clear access controls within your CI/CD tool to limit who can modify or trigger pipelines. Implement role-based access control (RBAC) to grant permissions based on user roles and responsibilities. This ensures only authorized individuals can make changes to the pipeline configuration.
#### Regular Security Audits:
Conduct regular security audits of your CI/CD pipeline to identify and address potential vulnerabilities. This proactive approach minimizes the risk of unauthorized access or security breaches.
#### Monitoring and Logging:
Closely monitor your CI/CD pipeline for performance and error detection. Implement logging solutions to track pipeline execution and identify potential bottlenecks or failures. Common tools for monitoring and logging include:
#### Grafana:
An open-source platform for visualizing metrics and logs from various sources, including CI/CD pipelines. This allows you to create dashboards to monitor pipeline health, build times, and deployment success rates.
#### ELK Stack (Elasticsearch, Logstash, Kibana):
A powerful combination of tools for collecting, storing, analyzing, and visualizing logs. You can use the ELK Stack to centralize logs from your CI/CD pipeline and other systems for comprehensive monitoring and troubleshooting.
#### Built-in Monitoring Tools:
Many CI/CD platforms offer built-in monitoring and logging capabilities. Utilize these tools to gain insights into pipeline execution and identify potential issues.
#### CI/CD for Different Programming Languages:
CI/CD pipelines are language-agnostic. Build tools and testing frameworks specific to your programming language can be seamlessly integrated within the pipeline. Here are some examples:
#### Java:
Build tools like Maven or Gradle can be used to automate the build process for Java applications. Testing frameworks like JUnit can be integrated for unit and integration testing.
#### JavaScript:
For JavaScript projects, tools like npm or yarn manage dependencies. Testing frameworks like Jest or Mocha can be used for automated testing.
#### Python:
Python projects often leverage build tools like setuptools or Poetry. Testing frameworks like unittest or pytest are popular choices for automated testing.
Remember: While the core concepts of CI/CD pipelines remain consistent across languages, specific tools and configurations might vary. Research the best practices and tools for your chosen programming language to optimize your CI/CD pipeline.
## Deepen Your CI/CD Expertise: Advanced Topics
CI/CD is an ever-evolving field. Let's explore some advanced concepts to push your pipelines to the limit:
#### Advanced CI/CD Techniques:
#### Infrastructure as Code (IaC):
Tools like Terraform or Ansible allow you to define infrastructure configurations as code. These configurations can be integrated into your CI/CD pipeline to automate infrastructure provisioning and management. IaC promotes infrastructure consistency, repeatability, and reduces manual configuration errors.
#### Continuous Integration with Legacy Systems:
Integrating legacy systems into a CI/CD pipeline can be challenging. Strategies include using wrappers or adapters to expose legacy functionalities through APIs. This allows legacy systems to interact with the pipeline for automated testing and deployment.
#### Blue/Green Deployments:
Discussed earlier, blue/green deployments minimize downtime during application updates. By deploying to a separate environment first, you can ensure a seamless rollback if issues arise.
#### Canary Deployments:
This strategy involves deploying a new version of the application to a small subset of users (canaries) to identify and fix issues before a full rollout. Canary deployments minimize risk by allowing you to test new versions on a limited scale before exposing them to all users.
#### CI/CD for Different Project Types:
#### Microservices Architecture:
Microservices-based applications can benefit from CI/CD pipelines designed to handle independent builds, tests, and deployments of individual microservices. This allows for faster deployments and easier management of complex applications.
#### Containerization with Docker:
Docker containers offer a standardized way to package and deploy applications. CI/CD pipelines can be used to automate building and deploying Docker images across environments. Containerization simplifies deployments and ensures consistent application behavior across environments.
#### CI/CD for Machine Learning (ML) Projects :
ML projects often require managing large datasets and complex models. CI/CD pipelines can be tailored to:
#### Automate data versioning and management:
Ensure data used for training and testing is tracked and versioned alongside code changes. This allows for reproducibility and easier troubleshooting.
#### Integrate model training and testing:
Utilize tools like TensorFlow or PyTorch within the pipeline to automate model training and testing processes. This ensures models are rigorously evaluated before deployment.
#### Manage model deployment:
CI/CD pipelines can be used to deploy trained models to production environments. This streamlines the process and ensures consistency between development and production models.
## Continuous Improvement and Optimization:
#### Performance Optimization:
CI/CD pipelines can suffer from performance bottlenecks, especially as projects grow. Here are some strategies for optimization:
#### Caching Dependencies:
Cache frequently used dependencies (e.g., libraries, packages) to reduce download times during builds. This can significantly improve build speed, especially for large projects.
#### Parallelization:
Break down pipeline stages that can be run concurrently (e.g., unit tests for different modules) and execute them in parallel. This reduces overall pipeline execution time.
#### Resource Optimization:
Allocate appropriate resources (CPU, memory) to pipeline stages based on their requirements. This ensures efficient resource utilization and avoids bottlenecks.
#### Metrics and Monitoring:
Don't just build your pipeline, actively monitor its performance and health. Here's how:
#### Define Key Performance Indicators (KPIs):
Identify metrics that represent the effectiveness of your pipeline, such as build time, deployment frequency, and rollback rate. Track these KPIs over time to identify areas for improvement.
#### Utilize Monitoring Tools:
Implement monitoring tools like Grafana or Prometheus to visualize pipeline metrics and identify potential issues. This allows you to proactively address bottlenecks and performance regressions.
#### Track Pipeline Logs:
Logs provide valuable insights into pipeline execution. Utilize log analysis tools like ELK Stack to analyze logs and identify errors or warnings that might indicate potential problems.
#### CI/CD Version Control:
Version control your CI/CD pipeline configurations just like your code. Here's why:
#### Track Changes:
Version control allows you to track changes made to your pipeline configuration, similar to how you track code changes. This facilitates rollbacks if necessary and ensures you can revert to a previous working configuration.
#### Collaboration and Review:
With version control, multiple team members can collaborate on the pipeline configuration and review changes before deployment. This promotes best practices and reduces the risk of errors.
#### Disaster Recovery:
In case of a major issue with your CI/CD pipeline, version control allows you to quickly revert to a known good state. This minimizes downtime and ensures you can recover from unexpected problems.
## The Future of CI/CD: A Glimpse into What's Next
The CI/CD landscape is constantly evolving. Here are some exciting trends to watch out for:
#### AI and Machine Learning in CI/CD:
AI can automate tasks within the pipeline, optimize resource allocation, and predict potential issues. Machine learning can be used to analyze historical data and suggest improvements to the pipeline. Here are some examples:
#### Automated Test Case Generation:
AI can be used to analyze code and automatically generate test cases, improving test coverage and reducing manual effort.
#### Predictive Pipeline Analytics:
Machine learning algorithms can analyze pipeline data to predict potential bottlenecks or failures before they occur. This allows for proactive intervention and ensures smooth pipeline operation.
#### Self-Healing Pipelines:
Imagine pipelines that can automatically detect and recover from failures. This could involve restarting failed stages or rolling back deployments. AI and machine learning can play a crucial role in developing self-healing pipelines.
#### CI/CD for Serverless Applications:
Serverless functions are becoming increasingly popular. CI/CD pipelines can be adapted to automate the deployment and management of serverless functions. Here's how:
#### Build and Package Serverless Functions:
CI/CD pipelines can be used to build and package serverless functions into deployment artifacts specific to the cloud provider (e.g., AWS Lambda packages, Azure Functions).
#### Deploy and Manage Serverless Functions:
The pipeline can automate deployment of serverless functions to the target cloud platform. Additionally, it can manage configuration updates and scaling based on traffic patterns.
#### Monitor and Optimize Serverless Functions:
CI/CD pipelines can be integrated with monitoring tools to track the performance and cost of serverless functions. This allows for continuous optimization and cost management.
By embracing these advancements and continuously improving your CI/CD practices, you can ensure your software delivery is fast, efficient, and reliable. Here are some concluding remarks to solidify your CI/CD knowledge:
CI/CD is a Journey, Not a Destination Building a bulletproof CI/CD pipeline is an ongoing process. As your project evolves, adapt and refine your pipeline to meet changing needs. Stay updated on the latest trends and tools to continuously optimize your CI/CD workflow.
Communication and Collaboration are Key a successful CI/CD pipeline requires close collaboration between development, operations, and security teams. Foster open communication and encourage feedback to ensure the pipeline aligns with everyone's needs.
Measure and Analyze Don't just build a pipeline and set it forget it. Regularly monitor pipeline performance, analyze metrics, and identify areas for improvement. Use data-driven insights to optimize your CI/CD process and ensure it delivers maximum value.
## Conclusion
CI/CD pipelines are the workhorses of modern software development. By understanding the core concepts, best practices, and advanced techniques explored in this comprehensive guide, you can empower your team to deliver high-quality software faster and more efficiently. Embrace CI/CD, continuously improve your pipelines, and watch your software delivery soar to new heights.
---
I'm grateful for the opportunity to delve into Building a Bulletproof CI/CD Pipeline: A Comprehensive Guide with you today. It's a fascinating area with so much potential to improve the security landscape.
Thanks for joining me on this exploration of Building a Bulletproof CI/CD Pipeline: A Comprehensive Guide. Your continued interest and engagement fuel this journey!
If you found this discussion on Building a Bulletproof CI/CD Pipeline: A Comprehensive Guide helpful, consider sharing it with your network! Knowledge is power, especially when it comes to security.
Let's keep the conversation going! Share your thoughts, questions, or experiences Building a Bulletproof CI/CD Pipeline: A Comprehensive Guide in the comments below.
Eager to learn more about DevSecOps best practices? Stay tuned for the next post!
By working together and adopting secure development practices, we can build a more resilient and trustworthy software ecosystem.
Remember, the journey to secure development is a continuous learning process. Here's to continuous improvement!🥂
| gauri1504 |
1,882,557 | Glam Up my Markup: Beaches | This is a submission for [Frontend Challenge... | 0 | 2024-06-10T03:46:17 | https://dev.to/2023_anshika_gupta_/glam-up-my-markup-beaches-ekh | 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
Welcome to the "Take Me to the Beach" project! This website showcases some of the most beautiful and popular beaches globally. You can explore detailed information about each beach, including its unique features and attractions. Additionally, the site includes a dark/light mode toggle for a personalized viewing experience.
Technologies Used
- HTML: For structuring the content.
- CSS: For styling the website.
- JavaScript: For interactive elements, including the dark/light mode toggle.
.
## Demo
You can visit my website here : [Take me to the Beach](https://flex0ing-ag.github.io/Take-me-to-the-beach/)
This is my Code : [GitHub](https://github.com/flex0ing-ag/Take-me-to-the-beach)
## Journey
- Learning Experience: Through this project, I deepened my understanding of HTML, CSS, and JavaScript. Implementing the dark/light mode toggle was particularly rewarding, as it challenged me to think about user experience and accessibility.
- Proud Moments: I am particularly proud of the responsive design, ensuring that the website looks great on all devices. The process of collecting and presenting beautiful images and information about the beaches was also very fulfilling.
- Challenges: One of the main challenges was optimizing the images and ensuring fast load times without compromising on quality. It was a great learning experience in balancing aesthetics and performance.
- Next Steps: I hope to expand this project by adding more beaches, user reviews, and an interactive map. Additionally, I aim to enhance the website's interactivity with more advanced JavaScript features.
Thank you for exploring this project. I hope you enjoy it as much as I enjoyed creating it!
| 2023_anshika_gupta_ |
1,882,556 | 11 Best SQL IDEs or SQL Editors for 2024 | Choosing the best SQL IDE depends on your specific needs, preferences, and the type of database you... | 0 | 2024-06-10T03:45:18 | https://dev.to/concerate/11-best-sql-ides-or-sql-editors-for-2024-447p | Choosing the best SQL IDE depends on your specific needs, preferences, and the type of database you are working with. However, here are some of the most popular and highly regarded SQL IDEs available as of 2024:
**1.SQLynx:** SQLynx is a strong contender among SQL IDEs, particularly for users who value a modern, intuitive interface and broad database support. It's well-suited for both individual developers and teams looking for collaborative features. If you're in the market for a new SQL IDE, SQLynx is definitely worth trying out, especially if you prioritize ease of use and data visualization capabilities.
Features
•Database Support: SQLynx supports a wide range of databases, including MySQL, PostgreSQL, SQLite, Microsoft SQL Server, and more.
•User Interface: Offers a clean, modern, and intuitive user interface designed for ease of use.
•Query Editor: Advanced query editor with syntax highlighting, code completion, and real-time error checking.
•Data Visualization: Includes features for visualizing query results with charts and graphs.
•Data Export/Import: Provides tools for data export and import in various formats (CSV, Excel, JSON, etc.).
•Database Management: Tools for database schema management, including the ability to create, modify, and delete database objects.
•Customizable Layout: Allows customization of the workspace layout to fit individual workflows.
•Collaboration: Features for team collaboration, including shared queries and project management.
Pros
•Ease of Use: Designed with user-friendliness in mind, making it accessible for both beginners and experienced developers.
•Feature-Rich: Comprehensive feature set that covers most database management and querying needs.
•Cross-Platform: Available on multiple operating systems, including Windows, macOS, and Linux.
•Modern Interface: Clean and modern UI design improves usability and efficiency.
•Visualization Tools: Enhanced data visualization capabilities for better insights.
**Cons**
•Learning Curve: SQLynx is relatively new and is designed with web-based development in mind, which means it may require some adjustment for individual users and small teams.
**2. DBeaver**
•Features: Supports multiple databases (MySQL, PostgreSQL, Oracle, SQL Server, SQLite, and more), data viewer, SQL editor, ER diagrams, and database structure comparison.
•Pros: Versatile, supports many databases, powerful features, open-source (Community Edition).
•Cons: Can be resource-intensive.
**3. DataGrip (by JetBrains)**
•Features: Smart code completion, on-the-fly analysis and quick-fixes, schema navigation, version control integration, and support for various databases.
•Pros: Intuitive interface, excellent code assistance, robust feature set.
•Cons: Paid software with a subscription model, can be heavy on resources.
**4. SQL Workbench/J**
•Features: Cross-platform SQL query tool, supports a variety of databases, data export/import, and SQL script execution.
•Pros: Lightweight, supports multiple databases, free.
•Cons: Basic interface, fewer advanced features compared to others.
**5. HeidiSQL**
•Features: Supports MySQL, MariaDB, PostgreSQL, and SQL Server, data editing, session management, user-friendly interface.
•Pros: Lightweight, easy to use, free.
•Cons: Limited to Windows, fewer features compared to DataGrip and DBeaver.
**6. SQuirreL SQL**
•Features: Graphical SQL client that supports JDBC-compliant databases, SQL query execution, data browsing, and editing.
•Pros: Supports numerous databases, free, and open-source.
•Cons: Interface can be less polished, fewer advanced features.
**7. Toad for SQL Server**
•Features: Database development and administration tool, SQL optimization, data analysis, automation of repetitive tasks.
•Pros: Comprehensive toolset for SQL Server, user-friendly, strong community support.
•Cons: Paid software, specific to SQL Server.
**8. Navicat**
•Features: Supports MySQL, MariaDB, MongoDB, SQL Server, SQLite, Oracle, and PostgreSQL, advanced data modeling, data transfer, and synchronization.
•Pros: Rich features, cross-platform, excellent customer support.
•Cons: Expensive compared to other options.
**9. Azure Data Studio**
•Features: Built-in source control, customizable dashboards, integrated terminal, supports SQL Server, Azure SQL Database, and more.
•Pros: Free, modern interface, integration with Azure services.
•Cons: Primarily focused on Microsoft SQL Server and Azure.
**10. pgAdmin**
•Features: Designed for PostgreSQL, supports SQL query execution, database management, data import/export, and visual query builder.
•Pros: Specifically tailored for PostgreSQL, free and open-source.
•Cons: Limited to PostgreSQL, interface can be complex for beginners.
**11. Sequel Pro**
•Features: MySQL database management tool for macOS, supports data browsing and editing, custom queries, and data import/export.
•Pros: User-friendly interface, lightweight, free.
•Cons: Limited to macOS and MySQL.
Recommendations Based on Use Case
•General Purpose Across Multiple Databases: SQLynx DBeaver, DataGrip
•MySQL Specific: SQLynx、Sequel Pro (macOS), HeidiSQL (Windows)
•PostgreSQL Specific: SQLynx，pgAdmin, DBeaver
•SQL Server Specific: Toad for SQL Server, Azure Data Studio
The best SQL IDE for you will depend on the specific databases you work with, your operating system, and the features you prioritize. Many of these IDEs offer free versions or trials, so it's worth trying a few to see which one best fits your workflow.
| concerate | |
1,882,554 | Javascript Promise Methords | Summary Promise.all :- Resolves when all promises resolve, or rejects if any promise... | 0 | 2024-06-10T03:43:13 | https://dev.to/mino/javascript-promisemethords-11np | **Summary**
**Promise.all** :- Resolves when all promises resolve, or rejects if any promise rejects.
**Promise.race** :- Resolves or rejects as soon as one of the promises resolves or rejects.
**Promise.allSettled** :- Resolves when all promises have settled, with an array of outcomes.
**Promise.any** :- Resolves as soon as any promise resolves, or rejects with an AggregateError if all promises reject.
**Promise.resolve** :- Returns a promise that resolves with the given value.
**Promise.reject** :- Returns a promise that rejects with the given reason.
| mino | |
1,882,553 | SUPABASE | Hello! Do you know about SUPABASE and powers? Read this to have a basic knowledge of it. This has the... | 0 | 2024-06-10T03:43:10 | https://dev.to/hussain101/supabase-4jbo | Hello!
Do you know about SUPABASE and powers?
Read this to have a basic knowledge of it.
This has the following sections:
1. Introduction
2. Use in IOT
3. SUPABASE vs FIREBASE
### **INTRODUCTION**:
Supabase is an open-source platform that provides developers with a suite of tools to build and scale their applications efficiently. Often referred to as an open-source alternative to Firebase, Supabase offers a range of backend services including a PostgreSQL database, authentication mechanisms, real-time subscriptions, and an auto-generated API that facilitates easy data handling. It simplifies backend development tasks, allowing developers to focus more on the front end and user experience.
The core of Supabase is its PostgreSQL database, which ensures robust, reliable storage and retrieval of data. The platform automatically generates RESTful and GraphQL APIs from your database schema, making it easier to interact with data. Supabase also supports real-time capabilities, where changes in the database can be streamed to applications instantly, enabling dynamic and interactive user experiences.
Furthermore, Supabase provides built-in authentication with simple yet secure management of users, including support for third-party logins. Its scalable architecture ensures that as your user base grows, your application remains performant and responsive.
### **FEATURES**
Supabase offers a comprehensive suite of features designed to enhance application development. Here are some of its key features:
1. **Database**: At its core, Supabase uses PostgreSQL, an advanced open-source relational database that supports both traditional SQL and modern features like JSON storage and full-text search. This robust system allows for complex queries and data relationships.
2. **Real-time Data**: One of the standout features of Supabase is its real-time capabilities. Developers can subscribe to database changes using websockets, allowing users to see updates immediately without refreshing their screens. This is ideal for applications requiring instant data updates, such as chat applications or live dashboards.
3. **Authentication**: Supabase provides a built-in authentication system that supports email and password login, as well as OAuth logins with providers like Google, GitHub, and Twitter. This system also handles security aspects like token refresh and encryption securely and conveniently.
4. **Auto-generated APIs**: Supabase automatically generates RESTful and GraphQL APIs based on your database schema. This significantly reduces the amount of backend code developers need to write and maintain, speeding up the development process.
5. **Storage**: For handling files, Supabase offers a storage solution that integrates seamlessly with its other services. Developers can manage user-generated content such as images, videos, and documents, with built-in security to control access.
6. **Extensibility**: Supabase can be extended with PostgreSQL functions, triggers, and stored procedures, allowing for custom backend logic that can be executed directly within the database.
7. **Dashboard**: Supabase provides a clean, user-friendly dashboard for managing your project. From here, you can control your database, manage authentication, view API logs, and configure other services.
8. **Local Development**: Supabase offers a CLI tool that allows developers to run their entire project locally. This is particularly useful for testing changes without affecting the production database.
### **Use of SUPABASE in relation to IOT**:
Supabase is an increasingly popular choice for backend services in Internet of Things (IoT) applications due to its real-time capabilities and robust database management features. Here are some ways Supabase can be effectively used in IoT scenarios:
1. **Real-time Device Monitoring**: IoT devices often need to send real-time data to a server for monitoring purposes. Supabase's real-time subscriptions allow developers to listen for changes in the database and update the user interface or alert systems instantly. This is crucial for applications like real-time health monitoring systems, environmental monitoring, or smart home control panels.
2. **Device Management and Authentication**: With its built-in authentication and security features, Supabase can manage device access and ensure that data exchanges between devices and the server are secure. Devices can be treated as users, with specific permissions and roles defined to control what each device is allowed to access or modify.
3. **Event-Driven Triggers**: IoT systems often rely on event-driven logic, where actions are triggered by specific changes in data. Supabase supports PostgreSQL triggers and functions, allowing developers to implement complex business logic directly in the database. For example, a trigger could be set to turn on cooling systems when temperature sensors detect a threshold being crossed.
4. **Scalable Data Storage and Access**: IoT applications can generate vast amounts of data. Supabase’s use of PostgreSQL ensures that it can handle large volumes of data with efficient querying capabilities. This is essential for applications like logging device data over time and analyzing this data for trends or anomalies.
5. **Simplified API Integration**: Since Supabase automatically generates RESTful and GraphQL APIs from the database schema, integrating various IoT devices and third-party services becomes more streamlined. This reduces the complexity of developing custom APIs for each new device or data source.
6. **Data Visualization and Reporting**: The real-time data stream from IoT devices can be utilized for dashboarding and reporting purposes directly through Supabase. Developers can create dynamic dashboards that reflect current device statuses or environmental conditions, enhancing decision-making and operational efficiency.
7. **Remote Configuration**: IoT devices often require updates or configuration changes that can be managed remotely. Supabase's storage solutions and database updates can be used to push configuration changes and firmware updates to devices without requiring physical access.
### **SUPABASE vs FIREBASE**
Supabase and Firebase are both popular backend-as-a-service platforms that offer developers a variety of tools to build dynamic applications without the need to manage infrastructure. However, they have distinct characteristics, target different use cases, and are built on different philosophies. Here’s a comparative look at their key differences:
### 1. Open Source vs. Proprietary
- **Supabase**: It is an open-source alternative to Firebase. This means that the code is freely available for modification, and there's a community contributing to its development. This can be beneficial for companies that prefer open-source solutions for security or customization reasons.
- **Firebase**: Owned by Google, Firebase is a proprietary service. It has a robust infrastructure and integration with many other Google services, but users are limited to the features provided, with less flexibility for modification.
### 2. Database Technology
- **Supabase**: Uses PostgreSQL, which is a powerful, open-source relational database. PostgreSQL supports complex queries, relational data, and JSON, offering greater flexibility for developers who need advanced database functionalities.
- **Firebase**: Primarily uses Firestore (a newer version of Firebase Realtime Database), which is a NoSQL database. It is great for real-time data handling and syncs across client apps in real time. However, it may not suit applications requiring complex queries and relationships.
### 3. Real-time Capabilities
- **Supabase**: Offers real-time capabilities by leveraging PostgreSQL’s listen/notify features. It allows developers to use SQL to create, read, update, and delete data in real time.
- **Firebase**: Provides extensive real-time database solutions. Its real-time updates are highly optimized and a core feature, suitable for applications that rely heavily on real-time interactivity.
### 4. Authentication
- **Supabase**: Provides authentication features that are somewhat less comprehensive than Firebase but still support important functionalities like OAuth logins, magic links, and email/password authentication.
- **Firebase**: Offers a more extensive set of authentication options, including phone number authentication, custom auth system integration, and more robust third-party integrations.
### 5. API Generation
- **Supabase**: Automatically generates RESTful and GraphQL APIs based on your database schema, which can significantly speed up backend development.
- **Firebase**: Does not automatically generate REST APIs in the same way. While Firebase provides SDKs and a REST API for accessing your data, the approach is more about interacting through Firebase’s client SDKs rather than a direct API over your database schema.
### 6. Extensibility and Integration
- **Supabase**: Being based on PostgreSQL, it can be integrated into existing systems that use PostgreSQL. Its open-source nature also allows for deeper customization and integration with other tools and services.
- **Firebase**: Integrates very well with other Google products like Google Analytics and AdMob. While Firebase can be extended via Google Cloud functions, the customization might not be as deep as what can be achieved with an open-source platform like Supabase.
### 7. Pricing
- **Supabase**: Offers a generous free tier, and since it's open-source, you can host it on your own infrastructure, which might be cost-effective at scale.
- **Firebase**: Also offers a free tier, but pricing can scale significantly based on the number of reads, writes, and deletes. This can become expensive for applications with heavy data usage.
| hussain101 | |
1,882,552 | From Megacities to Micromobility: How Uber can Adapt its System Design for Different Urban Transportation Needs | Traffic-clogged streets and limited parking are the daily struggles of commuters in megacities. But... | 0 | 2024-06-10T03:34:04 | https://dev.to/marufhossain/from-megacities-to-micromobility-how-uber-can-adapt-its-system-design-for-different-urban-transportation-needs-5753 | Traffic-clogged streets and limited parking are the daily struggles of commuters in megacities. But across the globe, a new wave of urban transportation is taking hold: micromobility. Bikes, e-scooters, and e-bikes are zipping through mid-sized cities, offering a convenient and eco-friendly way to get around. The challenge for Uber? Adapting its system design to cater to this diverse range of urban transportation needs. A flexible approach can benefit Uber and its users alike, creating a future where getting around the city is seamless and efficient.
**Understanding City on a Dime: Megacities vs. Mid-Sized**
Megacities are a different beast. Traffic jams and a lack of parking make car travel a nightmare. Uber's current system design, focused on car-based rides, tackles this challenge head-on. But what about other options?
Mid-sized cities are embracing micromobility. These smaller, lighter vehicles are perfect for shorter distances, reducing traffic congestion and environmental impact. Plus, they're often more affordable than car rides.
**Megacity Makeover: Sharing the Road and the Ride**
[System design uber](https://www.clickittech.com/application-architecture/system-design-uber/?utm_source=backlinks&utm_medium=referral
) can adapt to megacities by promoting carpooling and high-occupancy vehicles. Imagine tweaking the algorithms to prioritize these options, filling cars with multiple riders instead of just one. Plus, AI-powered dynamic pricing can help manage traffic flow. Think surge pricing for single riders during peak hours, encouraging carpooling to ease congestion.
Another smart move? Integrating Uber with existing public transportation networks. Imagine using the Uber app to plan a trip that combines a subway ride with a quick UberX ride for the last mile to your destination. This "first-mile/last-mile" solution bridges the gap between public transit and user destinations, making commutes smoother.
**Micromobility Magic in Mid-Sized Cities**
Time to ditch the car completely! In mid-sized cities, Uber can expand its offerings to include bicycles, e-scooters, and e-bikes. Imagine seamlessly booking a scooter through the familiar Uber app, unlocking it with your phone, and zipping to your meeting. A smooth integration of these options is key.
But Uber can go a step further. Imagine a system design that encourages multimodal transportation. A user planning a longer trip could combine a ride-sharing option with a final e-scooter leg. Incentives like discounts or loyalty points for using both services can nudge users towards this eco-friendly choice.
**Challenges and the Road Ahead**
Integrating micromobility isn't without its hurdles. Maintaining a fleet of bikes and scooters requires a strong operational plan. Plus, cities need to invest in parking infrastructure for these new vehicles.
Technology also plays a crucial role. Real-time availability of micromobility options and dynamic pricing based on demand are essential for a successful multimodal system design.
**The Future of Urban Mobility: A World on Wheels (and Two Wheels)**
A flexible system design allows Uber to cater to the diverse transportation needs of different cities. Imagine a future where megacities see fewer single-occupancy cars and more carpools, while mid-sized cities boast a network of bikes and scooters alongside ride-sharing options. In this multimodal landscape, Uber can position itself as a leader, shaping the future of urban mobility and keeping cities moving. | marufhossain | |
1,882,550 | Websocket | Introduction to WebSockets WebSockets represent a significant advancement in web technology,... | 0 | 2024-06-10T03:30:39 | https://dev.to/dariusc16/websocket-4chm |
**Introduction to WebSockets**
WebSockets represent a significant advancement in web technology, enabling real-time, bidirectional communication between clients and servers. Unlike traditional HTTP requests, which are unidirectional and stateless, WebSockets provide persistent connections that facilitate instantaneous data exchange.
**How WebSockets work?**
At its core, WebSocket is a protocol that establishes a full-duplex communication channel over a single TCP connection. This means that both the client and the server can send and receive data simultaneously without the overhead of multiple HTTP requests. The initial connection is established through a standard HTTP handshake, after which the connection is upgraded to the WebSocket protocol.
**Advantages of WebSockets**
One of the key advantages of WebSockets is its low latency and high throughput, making it ideal for applications that require real-time updates, such as chat applications, online gaming, financial trading platforms, and collaborative tools. Additionally, WebSockets reduce server load by eliminating the need for frequent polling, leading to more efficient use of network resources.
**Implementing WebSockets**
Implementing WebSockets in web applications typically involves using WebSocket APIs provided by modern web browsers, along with server-side WebSocket libraries or frameworks. Popular choices include Socket.IO, ws (Node.js WebSocket library), and Django Channels (for Python-based applications). With these tools, developers can easily integrate WebSocket functionality into their applications and harness the power of real-time communication.
**WebSocket Security Considerations**
While WebSockets offer many benefits, it's essential to consider security implications when implementing them in web applications. Cross-origin resource sharing (CORS), authentication, and encryption are critical aspects of WebSocket security. Additionally, developers should be aware of potential security vulnerabilities, such as denial-of-service (DoS) attacks, message tampering, and injection attacks, and take appropriate measures to mitigate these risks.
**Future of WebSockets**
As web technology continues to evolve, WebSockets are expected to play an increasingly significant role in enabling interactive and immersive web experiences. With the advent of technologies like WebRTC (Real-Time Communication) and HTTP/3, which incorporates features like multiplexing and connection reuse, the future looks bright for real-time communication on the web.
**What are WebSocket's used for?**
- Multiplayer online games
- Live sports scores and updates
- Collaborative editing and documenting sharing
- Financial trading platforms
- Live streaming and broadcasting
| dariusc16 | |
1,881,301 | Understanding Python Decorators | Without using decorators I think mostly we can’t build a decent application. They are everywhere.... | 0 | 2024-06-10T03:30:00 | https://dev.to/tankala/understanding-python-decorators-3n9f | webdev, beginners, programming, python | Without using decorators I think mostly we can’t build a decent application. They are everywhere. Let's learn what are they and how we can build our own.
{% embed https://newsletter.piptrends.com/p/understanding-python-decorators %} | tankala |
1,882,549 | Elixir, Erlang, and the BEAM | It’s exciting to learn new languages, especially one’s you take an interest in, but a great rule of... | 0 | 2024-06-10T03:29:22 | https://dev.to/cody-daigle/elixir-erlang-and-the-beam-5g6j | It’s exciting to learn new languages, especially one’s you take an interest in, but a great rule of thumb when taking in that learning process is to understand where they originate from. So, before taking a deep dive into Elixir I’d say it’s a pretty solid Idea to look into Erlang, Elixir’s parent language, in order to properly conceptualize what occurs within Elixir. One important topic to delve into would be Erlang’s virtual machine and the vital role it plays when developing with the language.
## Erlang
The Erlang development platform was created, in 1986, by Joe Armstrong, Mike Williams, and Robert Virding while at the Ericsson’s Computer Science Laboratory to aid in the development of telephony applications. Erlang is not only a platform but also a language. One of the large reasons Erlang is praised on it’s error handling is the use of the Open Telecom Platform framework. Although not so much on the telecom part, but instead is directed towards software that has properties of *telecom* applications, but i digress (I’ll touch on OTP a little later). Modern day systems require aspects like concurrency, fault-tolerance, and scalability in order to perform efficiently, preferable not crash at all, but when then inevitably do fail they recover swiftly. Now in a perfect world a system would be 100% bug and issue free, but sadly that’s not possible. Fortunately for us, by default, Erlang provides necessary assets to create systems with as much relief in those instances as possible. Next I want to go over how BEAM helps achieve this, but here are some of the resolutions that is provide by the use of Erlang/Elixir
- Detects and recovers from errors with ease
- Always provides a response regardless of the error so that it doesn’t affect the system impacting the user.
- Can be updated without disrupting user activities
- Can be distributed
### BEAM me up
The impressive concurrency and scalability within Elixir/Erlang systems may seem like witchcraft, but all the code that you write is actually executed on Erlang’s VM, called BEAM (Bogdan / Björn’s Erlang Abstract Machine). The files that are run on the virtual machine are compiled into bytecode with the **.beam** extension. What makes the virtual machine truly worthy of the spotlight and deserves to be recognized due to it’s unique handling of responsibilities like managing concurrency and parallelism of a system. In situations like simultaneous data processing, BEAM shines by effectively managing these tasks, enhancing the system's productivity and efficiency. Additionally Beam excels in error handling, which is a crucial aspect of **any** system, and handles those errors with minimal impact. The picture I’m trying to paint is the excellence in handling concurrency and parallelism, its efficient resource utilization, and robust error handling and recovery mechanisms making it a highly reliable and available system.
### OTP
Open Telecom Platform, commonly referred to as OTP, is an extensive collection of libraries and tools that form an integral part of the Erlang/OTP distribution. It provides a comprehensive framework that is specifically designed for the creation of robust applications that are not only fault-tolerant but also distributed in nature. This is all made possible through the use of the Erlang programming language, which is renowned for its ability to handle concurrent processes efficiently. Thus, OTP is a crucial tool in the Erlang ecosystem, enabling developers to build complex, reliable, and efficient applications with relative ease.
- Applications - Packages and manages application’d dependencies, configuration, and startup / shutdown processes
- Behaviors - Design patterns or abstractions for structuring applications
- Debugging & Tracing - Erlang Debugger, Profiler, Trace tools
- Distribution - Processes can run on different nodes and maintain transparent communication
- Hot Code Upgrades - Upgrading code doesn’t cause down time. AKA Hot Swapping.
- Libraries - Standard libraries for file handling, networking, and more
- Supervisor Trees - Creates hierarchical process structures for monitoring child processes.
OTP plays a vital role in the Erlang ecosystem and Elixir inherits it’s features along side the BEAM.
---
Erlang and Elixir code are compatible, so either language can be written interchangeably. The main difference lies in Elixir's more accessible syntax and tooling, which allows for cleaner, more maintainable code with a short learning curve. Elixir, with its friendly programming language, welcoming community, and tons of helpful resources like documentation and tutorials, really lets you tap into the power of BEAM. You'll be able to whip up projects in no time and take full advantage of everything it has to offer!
Personally, I look forward to really having the opportunity to delve as deep as I can into Erlang and Elixir to become proficient with developing technologies. With that being said the next few items I intend to write about will be the Elixir framework, Phoenix, and some of the advantages with using the language like pattern matching! | cody-daigle | |
1,882,548 | Iterative Development && Abstraction - Part 2 | In part 1, I wrote about taking blocks of static note cards and abstracting them into a carousel... | 0 | 2024-06-10T03:23:35 | https://dev.to/snackcode/iterative-development-abstraction-part-2-2dfp | webdev, javascript, beginners, learning | In [part 1](https://dev.to/snackcode/iterative-development-abstraction-part-1-2l9p), I wrote about taking blocks of static note cards and abstracting them into a carousel using a `@for` loop. These cards were utilized on a `learn more` page. The content for the cards were moved from the html template to the an JSON array in the controller (.ts) file.
Now that this is developed and working, another iteration of abstraction can be performed to see how the carousel could be made more useful. The idea here will be to move the carousel code out of the `learn more` template and move it into its own component.
Angular makes creating and implementing components super easy, barely an inconvenience [#RyanGeorge].
(Note that code snippets are at a high to mid level and are only provided to convey the idea of the development pattern.)
```
PS D:\thecookery> ng generate component ui/carousel
CREATE src/app/ui/carousel/carousel.component.html (24 bytes)
CREATE src/app/ui/carousel/carousel.component.spec.ts (633 bytes)
CREATE src/app/ui/carousel/carousel.component.ts (255 bytes)
CREATE src/app/ui/carousel/carousel.component.scss (0 bytes)
```
Now that the component is created, the code from the `learn more` template can be moved into carousel component. The first thing to do is replace autogenerated `carousel` template content
```
<p>carousel works!</p>
```
with the `learn more` content
```
@for( card of cards; track card.index) {
@if( slide == card.index) {
<div class="center-element w3-margin w3-animate-opacity">
<div class="card" style="max-width: 800px; height: 400px;">
<div class="w3-padding card-title">
{{card.title}}
</div>
<div class="w3-padding" style="text-align: left;height: 250px;font-size: 1.8em">{{card.text}}</div>
</div>
</div>
<div style="display: flex;justify-content: center;gap: 20px">
<button (click)="prevSlide()" class="w3-circle w3-hover-black w3-padding w3-margin-top w3-card" style="height: 60px;align-self: center;"><span class="bx bx-left-arrow" style="font-size: 2em;" ></span></button>
<button (click)="nextSlide()" class="w3-circle w3-hover-black w3-padding w3-margin-top w3-card" style="height: 60px;align-self: center;"><span class="bx bx-right-arrow" style="font-size: 2em;" ></span></button>
</div>
}
}
```
Next, the carousel controller need to know about the slide controls. This is accomplished by moving from the learn more controller the `nextSlide()` and `prevSlide()` functions to the carousel and defining the necessary variables.
(Note that I am doing this a bit old school Angular and not using the newer standalone component. Old school means that then the component must be registered in the `app modules` area.)
```
import { Component } from '@angular/core';
@Component({
selector: 'app-carousel',
templateUrl: './carousel.component.html',
styleUrl: './carousel.component.scss'
})
export class CarouselComponent {
public slide: number = 1;
public slideCount = 5;
nextSlide() {
this.slide = this.slide + 1;
if (this.slide > this.slideCount) {
this.slide = 1;
}
}
prevSlide() {
this.slide = this.slide - 1;
if (this.slide < 1) {
this.slide = this.slideCount;
}
}
}
```
Looking at the code above, there is still a bit more work to do. The first thing is that the new carousel has no idea what the cards are as they are contained in the `learn more` controller. Another issue to address is the slide count as we know not all carousels would have 5 slides.
Addressing the first issue, the cards need to be passed into the carousel component. To do this, a `cards` input and card object need to be created in the carousel. Address the second issue, the `slideCount` value can be removed and replaced with the length of the cards array.
```
import { Component, Input } from '@angular/core';
export class Card {
title: string = '';
text: string = '';
index: number = 0;
}
@Component({
selector: 'app-carousel',
templateUrl: './carousel.component.html',
styleUrl: './carousel.component.scss'
})
export class CarouselComponent {
@Input() cards: Array<Card> = [];
public slide: number = 1;
nextSlide() {
this.slide = this.slide + 1;
if (this.slide > this.cards.length) {
this.slide = 1;
}
}
prevSlide() {
this.slide = this.slide - 1;
if (this.slide < 1) {
this.slide = this.cards.length;
}
}
}
```
Next, any CSS specific to the carousel needs to be added its CSS file.
The last step is to replace the existing learn more carousel code with new carousel component. The learn more template goes from this:
```
<style>
.card {
background-image:
linear-gradient(180deg, white 3rem, #F0A4A4 calc(3rem), #F0A4A4 calc(3rem + 2px), transparent 1px),
repeating-linear-gradient(0deg, transparent, transparent 1.5rem, #DDD 1px, #DDD calc(1.5rem + 1px));
box-shadow: 1px 1px 3px rgba(0,0,0,.25);
background-color: white;
}
.card-title {
font-size: 1.5em;
}
/*https://codepen.io/teddyzetterlund/pen/YPjEzP*/
</style>
<div class="w3-center" style="padding-top: 50px;margin-bottom:20px;width: 100%">
<img class="w3-round-large w3-card" width=100 src="/assets/logo.png">
<div style="font-size: 3vw;">learn more</div>
<button class="w3-button w3-round-xxlarge w3-blue w3-hover-black" [routerLink]="['/register']">Become a member...</button>
</div>
@for( card of cards; track card.index) {
@if( slide == card.index) {
<div class="center-element w3-margin w3-animate-opacity">
<div class="card" style="max-width: 800px; height: 400px;">
<div class="w3-padding card-title">
{{card.title}}
</div>
<div class="w3-padding" style="text-align: left;height: 250px;font-size: 1.8em">{{card.text}}</div>
</div>
</div>
<div style="display: flex;justify-content: center;gap: 20px">
<button (click)="prevSlide()" class="w3-circle w3-hover-black w3-padding w3-margin-top w3-card" style="height: 60px;align-self: center;"><span class="bx bx-left-arrow" style="font-size: 2em;" ></span></button>
<button (click)="nextSlide()" class="w3-circle w3-hover-black w3-padding w3-margin-top w3-card" style="height: 60px;align-self: center;"><span class="bx bx-right-arrow" style="font-size: 2em;" ></span></button>
</div>
}
}
```
...to this:
```
<div class="w3-center" style="padding-top: 50px;margin-bottom:20px;width: 100%">
<img class="w3-round-large w3-card" width=100 src="/assets/logo.png">
<div style="font-size: 3vw;">learn more</div>
<button class="w3-button w3-round-xxlarge w3-blue w3-hover-black" [routerLink]="['/register']">Become a member...</button>
</div>
<app-carousel [cards]="cards"></app-carousel>
```
The **_learn more_** controller can be reduced to:
```
import { Component } from '@angular/core';
@Component({
selector: 'app-learn-more',
templateUrl: './learn-more.component.html',
styleUrls: ['./learn-more.component.scss']
})
export class LearnMoreComponent {
public cards: Array<any> = [
{ title: 'create and edit recipes',
text: ` At mealHash, you can create and edit recipes. This includes areas for ingredients, instructions, and other key points
you would expect as part of recipe.
`,
index: 1
},
{ title: 'stores',
text: ` You can also add stores into your mealHash, create grocery lists and easily add and remove items from the list.
Ingredients can be added to directly to your grocery lists from your recipes allowing you manage your shopping experience.
`,
index: 2
},
{ title: 'search',
text: ` Use the search page to find recipes by name or that have a particular ingredient. When you find a recipe you want to try, to can copy
it right to your recipe binder and then edit it to make it your own.
`,
index: 3
},
{ title: 'recipe feed',
text: ` A feed is available of your and others recipes as they are added to mealhash. Just like the search, you can add a recipe to your
mealhash and modify it to make it your own.
`,
index: 4
},
{ title: 'cost',
text: ` mealhash is free and we intend to keep it that way. But will gladly accept donations to keep the site running. In future,
we may build out premium features as we have more mealhasher feedback. But our goal is to make mealhash a must have site
for your recipes, grocery lists, and meal plans.
`,
index: 5
}
]
}
```
...which is effectively the content of the cards.
By doing iterative development with abstraction along the way, we ended up with a carousel component that can be used elsewhere in the project. And just by modifying the one component - for example adding images to the card with an `image` key/value pair - the capability will persist to where ever that component is implemented.
Going through process of iterative development and abstraction helps you get to lower code solutions thus making your code more manageable, efficient and pliable.
There is one more abstraction I will share regarding this particular component - stay tuned for part 3. If you can think of other abstractions, please feel free to share in the comments.
Cheers!
| snackcode |
1,882,540 | Finding the Perfect Talent Agent - A Comprehensive Guide with Micah Pittard | When you're longing to carve a niche for yourself in the entertainment universe, whether it's acting,... | 0 | 2024-06-10T03:15:47 | https://dev.to/micahpittard/finding-the-perfect-talent-agent-a-comprehensive-guide-with-micah-pittard-d3 | When you're longing to carve a niche for yourself in the entertainment universe, whether it's acting, modeling, music, or any other artistic domain, partnering with the apt talent agency, like New Standard Branding (NSB) led by Micah Pittard, can dramatically shape your career trajectory. A talent agent, particularly one as seasoned as Pittard, can unlock opportunities, broker lucrative deals, and steer your profession to unparalleled heights. Nonetheless, talent agents are as diverse as the talents they represent, and identifying your ideal match necessitates deliberate scrutiny.
Industry Expertise and Connections
The realm of entertainment can be a complex maze of prospects and hurdles, making a knowledgeable agent an essential ally. In the pursuit of a talent agent, consider someone like Micah Pittard, who has an established history of accomplishment in your specific area of interest. Specialists in your field, such as Pittard and the team at New Standard Branding (NSB), possess the necessary network, insights, and understanding of the industry to navigate your career path effectively. Moreover, they offer invaluable advice on industry patterns, assisting you in remaining current and competitive.
Reputation and Credibility
An agent's reputation and credibility are essential indicators of their trustworthiness and effectiveness. Research the agent's history, client testimonials, and industry reviews. Are they known for ethical practices, transparent communication, and delivering on promises? A well-respected talent agent will not only open doors but also ensure your interests are protected throughout your career.
Commitment and Availability
When you sign with a talent agent, you're entering into a partnership. It's crucial to find an agent who is committed to your success and available when needed. Communication is key in this relationship, so assess how responsive and accessible the agent is. A good agent should be willing to invest time and effort into understanding your goals and tailoring their services to your needs.
Personal Chemistry
While maintaining a professional demeanor is crucial, the rapport between you and your talent agent, such as Micah Pittard of New Standard Branding, can profoundly amplify the effectiveness of your collaboration. Given the frequency of your interactions, feeling at ease, comprehended, and valued becomes pivotal. Arranging face-to-face meetings or virtual discussions with potential agents like Pittard can facilitate an assessment of this compatibility, securing a fruitful and congenial alliance with NSB.
Transparent Fees and Contracts
Before signing any agreements, carefully review the terms, fees, and commission structure with your potential agent. Transparent and fair contracts are crucial to protect your financial interests. Make sure you understand how much your agent will earn from your bookings and any additional charges involved. Avoid agents who demand exorbitant upfront fees without delivering tangible results.
Track Record of Success
A talent agent's past successes can be a strong indicator of their ability to help you succeed. Ask for a portfolio of their clients' achievements, including notable bookings, endorsements, and career milestones. If the agent has a history of elevating their clients' careers, it's a positive sign that they can do the same for you.
Network and Connections
An agent's network is one of their most valuable assets. A well-connected agent can introduce you to casting directors, producers, and other industry professionals who can provide you with opportunities. Ensure that your agent has a robust and relevant network that aligns with your career goals.
Understanding of Your Goals
Your talent agent should have a deep understanding of your career aspirations. They should be able to align their strategy with your goals and provide guidance on how to achieve them. A good agent will work with you to develop a clear and realistic roadmap for your career, including short-term and long-term objectives.
Responsiveness and Communication
Effective communication is crucial when working with a talent agent. They should be responsive to your inquiries, keep you updated on opportunities and developments, and be open to discussing your concerns. Evaluate their communication style and ensure it aligns with your expectations.
Legal Compliance
A reputable talent agent should operate within the bounds of the law and industry standards. Verify that they are licensed and registered with the appropriate agencies, and that their practices comply with relevant labor laws and regulations. This step is essential to protect your rights and interests.
Flexibility and Adaptability
The entertainment industry is dynamic, and your career trajectory may change over time. Look for an agent who is flexible and adaptable, able to pivot and adjust strategies as needed. They should be forward-thinking and capable of navigating the ever-evolving landscape of the entertainment world.
References and Recommendations
Don't hesitate to ask for references or seek recommendations from colleagues in the industry. Talking to current or former clients of a potential agent can provide valuable insights into their working style, reliability, and effectiveness.
Intuition and Gut Feeling
Sometimes, the right choice is a matter of intuition and gut feeling. If, after considering all the practical factors, you feel a strong connection or sense of trust with a particular talent agent, it may be a sign that they are the right fit for you. Trust your instincts, but also ensure that your decision is informed and well-reasoned.
In concluding, securing the ideal talent agent, such as Micah Pittard at New Standard Branding (NSB), marks a pivotal stride in your triumphant journey within the entertainment sector. Contemplate essential aspects – an in-depth understanding of the industry, an impeccable reputation, unwavering dedication, compatibility in personal chemistry, transparent contractual agreements, an impressive track record, a robust network, comprehension of your objectives, prompt responsiveness, adherence to legal standards, adaptability, credible references, and trust in your intuition – while making your choice. By adopting this thorough approach, you will be more adept at partnering with an agent, like Micah Pittard and his team at NSB, who can steer your career towards unparalleled heights and assist you in realizing your aspirations in the highly competitive realm of entertainment.
| micahpittard | |
1,882,538 | Unlocking the Power of AWS RDS: A Deep Dive into Managed Relational Databases | Unlocking the Power of AWS RDS: A Deep Dive into Managed Relational Databases ... | 0 | 2024-06-10T03:02:30 | https://dev.to/virajlakshitha/unlocking-the-power-of-aws-rds-a-deep-dive-into-managed-relational-databases-4oob | 
# Unlocking the Power of AWS RDS: A Deep Dive into Managed Relational Databases
### Introduction
In today's data-driven world, businesses constantly seek ways to optimize their data management strategies. Amazon Relational Database Service (Amazon RDS) emerges as a powerful solution, offering a fully managed service that simplifies the setup, operation, and scaling of relational databases in the AWS cloud. This blog post will delve into the intricacies of AWS RDS, exploring its features, use cases, advantages, and more.
### Understanding AWS RDS
Amazon RDS is a managed database service that allows you to set up, operate, and scale relational databases in the cloud easily. It provides a wide array of database engines to choose from, including:
* **Amazon Aurora:** A MySQL and PostgreSQL-compatible database engine designed for the cloud, offering high performance, availability, and scalability.
* **MySQL:** A popular open-source relational database management system.
* **MariaDB:** A community-developed fork of MySQL with enhanced performance and features.
* **PostgreSQL:** A powerful, open-source object-relational database system known for its data integrity and extensibility.
* **Oracle:** A widely used enterprise-grade relational database management system.
* **SQL Server:** Microsoft's relational database management system.
### Why Choose AWS RDS? Key Benefits
Amazon RDS offers a compelling value proposition with numerous benefits:
* **Simplified Administration:** Offload the burden of database management tasks like provisioning, patching, backups, and replication.
* **Cost-Effectiveness:** Pay only for the resources you consume, with flexible pricing options such as on-demand and reserved instances.
* **Scalability and Performance:** Easily scale your database's compute and storage resources up or down to meet changing application demands.
* **High Availability and Durability:** Leverage Multi-AZ deployments for automatic failover and data replication, ensuring business continuity.
* **Security:** Secure your databases with network isolation, encryption at rest and in transit, and integration with AWS Identity and Access Management (IAM).
### Exploring AWS RDS Use Cases: Five Practical Examples
Let's delve into five compelling use cases where AWS RDS shines:
1. **E-commerce Platforms**
E-commerce websites require robust and scalable databases to handle product catalogs, customer data, orders, and transactions. RDS for MySQL or PostgreSQL, combined with Amazon Aurora's high-performance capabilities, provides a perfect solution for managing these critical data workloads efficiently and reliably.
**Example Architecture:**
* **Web Servers:** Handle incoming user requests.
* **Application Servers:** Process business logic and interact with the database.
* **RDS for MySQL/PostgreSQL/Aurora:** Stores product information, customer data, orders, and inventory.
* **Amazon ElastiCache:** Caches frequently accessed data to improve performance.
2. **Mobile and Web Applications**
Modern applications rely heavily on databases to store user profiles, application data, and user-generated content. RDS supports a variety of database engines, including MySQL, PostgreSQL, and MongoDB (through DocumentDB), providing flexibility and scalability for different application requirements.
**Example Architecture:**
* **Load Balancers:** Distribute traffic across multiple application servers.
* **Application Servers:** Process API requests and interact with the database.
* **RDS for MySQL/PostgreSQL/DocumentDB:** Stores user data, application content, and interactions.
* **Amazon S3:** Stores media files and static content.
3. **Enterprise Resource Planning (ERP) Systems**
ERP systems manage critical business processes, requiring robust and reliable database solutions. RDS for Oracle or SQL Server offers the enterprise-grade features and performance needed to handle the complex data structures and transactional workloads typical of ERP applications.
**Example Architecture:**
* **Presentation Tier:** Provides the user interface for accessing ERP functionalities.
* **Application Tier:** Hosts the business logic and interacts with the database.
* **RDS for Oracle/SQL Server:** Stores financial data, customer relationship management (CRM) information, supply chain data, and more.
* **AWS Directory Service:** Provides centralized user authentication and authorization.
4. **Data Warehousing and Business Intelligence**
RDS for PostgreSQL, with its support for advanced data types and extensions, can serve as a robust platform for data warehousing and business intelligence (BI) applications. Its scalability allows it to handle large datasets, enabling businesses to gain valuable insights from their data.
**Example Architecture:**
* **Data Sources:** Feed data from various sources, such as transactional databases, logs, and external systems.
* **AWS Glue:** Extracts, transforms, and loads (ETL) data into the data warehouse.
* **RDS for PostgreSQL:** Stores the processed data in a structured format for analysis.
* **Amazon Redshift:** Provides a high-performance data warehouse for complex queries and reporting.
* **Amazon QuickSight:** Offers a serverless BI service for data visualization and dashboarding.
5. **Software as a Service (SaaS) Applications**
SaaS providers often leverage RDS to manage their customer data securely and efficiently. The ability to create isolated database instances for each customer ensures data segregation and security while offering scalability and performance.
**Example Architecture:**
* **Multi-Tenant Application:** A single instance of the application serves multiple customers (tenants).
* **RDS for MySQL/PostgreSQL/Aurora:** Stores data for each customer in separate databases or schemas.
* **AWS IAM:** Manages user access and permissions for each tenant.
* **Amazon CloudFront:** Delivers static content and application assets to users globally.
### Exploring Alternatives: Comparing RDS with Other Cloud Database Services
While AWS RDS stands out as a powerful solution, it's worth considering other cloud database services:
* **Google Cloud SQL:** Offers fully managed MySQL, PostgreSQL, and SQL Server instances. Key features include automatic backups, replication, and point-in-time recovery.
* **Azure SQL Database:** Microsoft's cloud-based relational database service, closely integrated with the Azure platform. It provides options for managed instances, elastic pools, and serverless compute.
* **DigitalOcean Managed Databases:** Offers managed PostgreSQL, MySQL, and Redis instances. Its developer-friendly approach and competitive pricing make it an attractive option for smaller projects and startups.
### Conclusion
AWS RDS simplifies database management, offering scalability, performance, and cost-efficiency. Its support for various database engines caters to diverse application needs, making it an excellent choice for modern businesses. By understanding its features, use cases, and best practices, you can unlock the power of AWS RDS to streamline your data management processes and drive innovation.
### Architecting Advanced Solutions with AWS RDS
As an AWS solution architect, let's explore a more advanced use case: Building a real-time analytics platform with AWS RDS and other AWS services.
**Use Case:** Real-Time Analytics Platform for Personalized Recommendations
**Scenario:** Imagine an e-commerce platform with millions of users. The goal is to provide personalized product recommendations in real time based on user behavior, browsing history, and purchase patterns.
**Architecture:**
1. **Data Ingestion:** User events such as product views, searches, and cart additions are captured using Amazon Kinesis Data Streams.
2. **Real-time Processing:** Amazon Kinesis Data Analytics processes the streaming data in real time using a streaming framework like Apache Flink or Apache Spark Streaming. It analyzes user behavior patterns, calculates recommendations, and updates user profiles.
3. **Machine Learning Integration:** Amazon SageMaker, a fully managed machine learning service, can be integrated to build, train, and deploy machine learning models for more sophisticated recommendation algorithms. These models can be trained on historical data stored in Amazon S3 and invoked in real time through SageMaker endpoints.
4. **Data Storage:** AWS RDS for PostgreSQL stores user profiles, product catalogs, and historical data for batch analysis and model training.
5. **Caching:** Amazon ElastiCache, a fully managed in-memory caching service, can be used to cache frequently accessed data, such as product recommendations and user profiles, reducing latency and improving performance.
6. **API Gateway:** Amazon API Gateway provides a secure and scalable way to expose the recommendation engine as a RESTful API that can be consumed by the e-commerce platform.
**Benefits:**
* **Real-time Personalization:** The platform can deliver highly personalized recommendations to users in real time, enhancing their shopping experience and potentially increasing sales.
* **Scalability and Performance:** The architecture is designed to handle high volumes of data and user requests, ensuring a smooth and responsive user experience.
* **Cost-Effectiveness:** AWS services like Kinesis Data Streams, Kinesis Data Analytics, and RDS provide a cost-effective solution for real-time data processing and storage.
This advanced use case demonstrates how AWS RDS can be integrated with other AWS services to create sophisticated and scalable solutions. By leveraging the power of cloud computing and managed services, businesses can unlock new possibilities and drive innovation across various domains.
| virajlakshitha | |
1,882,537 | Intro to Embedded Systems | Introduction No matter where you are right now, chances are is that an embedded system is... | 0 | 2024-06-10T02:59:34 | https://dev.to/ccwell11/intro-to-embedded-systems-5c7p | ### Introduction
No matter where you are right now, chances are is that an embedded system is within arms reach. These systems are so common people never take the time to acknowledge the tech that may be incorporated in their day-to-day lives. Embedded systems are present within products like television remotes, microwaves, automobiles, watches, and a lot more. Embedded systems help for products like these and others that may vary to behave how they are supposed to by dividing the tasks of a product into microcomputers designed to handle their own respective task.
### What are Embedded Systems?
An embedded system is typically referred to as a combination of computer hardware, software, and occasionally firmware in order to fulfill a specific function or task. These systems are labeled as embedded because they are only a single component of a much larger computational operation. These embedded systems are capable of being reprogrammed if necessary, but they are typically designed with fixed functionality in order to maintain the overall functionality of an entire system. The main reasons for the separation of entire systems into smaller, embedded systems are to cut back on costs which improves the efficiency of mass production, and to isolate certain functions similar to the separation of components when developing an application.
### Embedded Systems: Key Concepts
#### Efficiency
- Resource management
* Low-power consumption
* Specified usage of computational components
- Real-time performance
* Precise timing for time-sensitive data responses
#### Reliability & Stability
- Robust
- Error handling
- Fault tolerance
- Definitive design
- Modifications to code not needed consistently
#### Scalability
- Custom layout and complexity
- Ability to design hardware & software compatibility to meet
varying application requirements
- Different processors
- Microprocessor
- Microcontroller
- Multiprocessors/system-on-chip (SoC)
### Components of Embedded Systems
#### Hardware
The hardware, the physical components inside of an electrical device, of an embedded system are comprised of a processor, power supply, a memory unit, and some type of communication interface. As mentioned previously, there are a few options when it comes to processors in an embedded system: microcontrollers, microprocessors, and system-on-chip’s. Microprocessors are categorized as such because of their reliance on other peripherals within the system such as memory and are known to require more support. Microcontrollers on the other hand have access to their own interface peripherals. SoC’s utilize multiple processors and interfaces on a single chip to handle more complex algorithms. The communication interface is responsible for transmitting data from the processor to other system components in order to continue the chain of action prerequisites for proper functionality.
#### Software
The software, the programs utilized by a device, of an embedded system commonly include firmware and an operating system (OS). Firmware is a type of low-level software that allows for hardware and additional software interact with each other properly. It is part of the reason as to why the processor can access data that may be stored within memory. Operating systems are another key component when it comes to software. It is mostly necessary when real time operating system (RTOS) come into play. The more common OS used in embedded systems when real-time operation is needed is a “stripped-down version of Linux” (Ben Lutkevich, 'What is an Embedded System?)".
### Classifications
There are three main classifications of embedded systems (excluding the other few that may be more controversial) that can be used to determine and identify the type of embedded system along with the function they may serve in the overarching flow of the system.
- Subsystems
Subsystems are simply classified as a smaller component that is used in conjunction with other parts. They usually do not perform the entire task that will eventually be completed upon all system successes but instead are in charge of managing and reporting the data of certain input or responses.
- Standalone
Standalone embedded systems are exactly as they sound, systems designed to be used independently of other products or systems. They still do not possess the ability to perform a multitude of actions but can still perform a limited set of behaviors that it has been made to do.
- Networked Systems
Networked systems are systems that have some involvement with network connectivity. Usually mentioned in conversations with Internet of Things (IoT), this type of embedded system has become increasingly popular in today's modern society.
### JavaScript & Embedded Systems
Although, JavaScript is not a language that is used in high frequencies when it come embedded systems, there seems to be an increase in the usage for development. In GitHub user cesanta's repo, [Elk](https://github.com/cesanta/elk?tab=readme-ov-file), JavaScript was given more functionality during the development stage by using the Elk engine which was designed to use C-language firmware in place of JavaScript and vice-versa. Below is an example of how it may be used to make a LED light flash on an Arduino board using the Elk engine to have JS compatibility.
```js
js_eval(js,
"let pin = 13;" // LED pin. Usually 13, but double-check
"gpio.mode(pin, 1);" // Set OUTPUT mode on a LED pin
"for (;;) {"
" delay(300);"
" gpio.write(pin, 1);"
" delay(300);"
" gpio.write(pin, 0);"
"}",
~0U);
```
### Conclusion
In conclusion, embedded systems are crucial for almost all technological and tangible devices due to their wide variety of usages and cheap production cost. With a large population of internet citizens in today's current age, the use of networked systems has grown larger as time goes on. With an estimate market of around $116 billion dollars in 2025 and top tech giants backing and manufacturing chipsets for use in embedded systems (Texas Instruments, IBM, Google...), it is apparent that embedded systems have and will continue to innovate the world.
#### Sources
- https://github.com/cesanta/elk/blob/master/examples/BlinkyJS/BlinkyJS.ino
- https://d2ms8rpfqc4h24.cloudfront.net/uploads/2021/02/Types-of-Embedded-System.jpg
- https://images.ctfassets.net/xwxknivhjv1b/1YE6oOCOD1MsRWYI4SOCie/5a0d19b9e97b164782ddaeb1d81138d1/what_is_hardware.svg
- https://i.ytimg.com/vi/BTB86HeZVwk/sddefault.jpg
- https://www.techtarget.com/iotagenda/definition/embedded-system
- https://www.spiceworks.com/tech/tech-general/articles/what-are-embedded-systems/
- https://www.youtube.com/watch?v=oPn_adlC1Q0 | ccwell11 | |
1,882,536 | Update: Live Feedback script | Hi! A few weeks ago I wrote a blog post Introducing Live Feedback as a Google Chrome... | 0 | 2024-06-10T02:58:35 | https://dev.to/juliankominovic/update-live-feedback-script-35oi | webdev, javascript, react, productivity | 
Hi! A few weeks ago I wrote a blog post [Introducing Live Feedback](https://dev.to/juliankominovic/introducing-live-feedback-2cg8) as a Google Chrome Extension.
Live Feedback is a script that allows you to start getting feedback directly on your website in real time from your developers, designers and everyone with a Github account.
I've been using it for a while and I realized that it would be much more useful if it was a standalone script.
So I decided to rewrite it as a script and publish it on GitHub.
**Try it out and let me know what you think!**
**Link: [Try Live Feedback](https://www.jkominovic.dev/live-feedback)**
**[Github repo](https://github.com/JulianKominovic/live-feedback)**
| juliankominovic |
1,882,529 | How to study React to become a pro. Introduction to React. | React has by far the largest market share among JavaScript frameworks! However, it is a framework... | 0 | 2024-06-10T02:56:34 | https://dev.to/yukionishi1129/how-to-study-react-to-become-a-pro-introduction-to-react-p3l | react, beginners, javascript, frontend | React has by far the largest market share among JavaScript frameworks!
However, it is a framework with a high failure rate, so I would like to introduce a roadmap for learning React from my knowledge as an active front-end engineer!
# Understanding React overview
First of all, what can React do? And what features does it have to make it work? Let's learn about the following!
## The best framework for building SPA
One of the biggest advantages of JavaScript frameworks such as React is the ability to efficiently build single page application (SPA)!
Simply put, SPA is a technology that 'allows screen transitions to be carried out without waiting for a server response'. This feature allows for quick screen transitions.
The mechanism that makes this SPA possible is actually achieved by "making it look like a screen transition is taking place by replacing the part below the body tag in the HTML"!
With React, each time the screen URL changes, only the display part of the HTML is replaced.
So how does it change parts of the HTML?
To find out, you first need to understand something called 'components'.
## The concept of 'components'
React allows HTML to be described in JavaScript, and parts can be created in units of screen components, such as buttons, headers and footers.
These component parts are called 'components', and screens are built by combining components.
Screen transitions in SPA are achieved by replacing these components.
This method of describing HTML in JavaScript is called 'jsx', and React uses this method to create component files.
In this case, the side to be introduced is called the parent component and the side to be introduced is called the child component.
Furthermore, components are created as JavaScript files, so they are introduced by importing the child component's js file into the parent component's js file.
At this point, the JavaScript function "ECMA module" is used, so make sure you have a good review of it!
## Change only the parts of the data that have been updated (about the virtual DOM)
One of the advantages of using React is that "only the parts affected by the updated data are changed".
In the case of web services that do not use React, even if only a part of the data is changed, synchronous communication is used and the entire screen has to be redrawn, which is not easy to operate. (Asynchronous communication is also possible using ajax, but this tends to result in complex and poorly maintainable code.)
With React, it is possible to "redraw only the parts of the screen related to the updated data".
Therefore, this can be achieved with simple code and without redrawing via synchronous communication.
This can be achieved by differential rendering using the Virtual DOM.
The concept of the virtual DOM is a little difficult to grasp, so we would like you to have an image of it as "having screen data before and after changes, and having a function that detects the differences and updates only the changed parts".
## Components have states (State and Props)
We have seen that changes to the screen UI are efficiently implemented by the virtual DOM.
So how can we determine the sign that the UI has changed?
Actually, each component can have its own data (state), and the change in state is used to determine that the UI has changed. (In React, a state is called a 'State'.)
You can define states for components using functions such as 'useState' in React Hooks.
Components can also be nested, so you can pass states defined in a parent component to a child component.
This functionality is called 'Props', and in React, States and Props are the foundation of state management, so it is necessary to have a good understanding of them.
## State management is fundamental in React!
React provides a comfortable UI through state management using States and Props.
In addition to Props, there is also a function called 'Context API' for passing state within components.
There is also a function called "Redux" that enables this, as there are situations where you may want to use a common state for components that are not in a parent-child relationship. (Functions that manage state outside of components, such as Redux, are sometimes referred to as 'global state' or 'store'.)
Thus, state management is very important in React!
Since React does things in invisible areas such as the virtual DOM, it is difficult to get an image of how the state changes and the UI is actually changed behind the scenes.
Therefore, it is important to first implement an application that changes the UI by state management using only JavaScript, and understand how the UI changes based on the flow of data.
If you have never created a todo list in JavaScript, please try implementing it before learning React!
# Conclusion
There are four key aspects to learning React.
- The best framework for building SPA
- Components
- Virtual DOM
- State Management
| yukionishi1129 |
1,882,535 | Interface Segregation Principle | The Interface Segregation Principle (ISP) suggests that a class should not be forced to implement... | 0 | 2024-06-10T02:50:07 | https://dev.to/palanivel_sundararajangu/interface-segregation-principle-2edj | The Interface Segregation Principle (ISP) suggests that a class should not be forced to implement methods it doesn’t need.
### Bad Practice - Principle not followed
```java
+------------------+
| <<interface>> |
| IVehicle |
+------------------+
| + drive() |
| + fly() |
+------------------+
^ ^
| |
+------------------+ +------------------+
| Car | | Airplane |
+------------------+ +------------------+
| + drive() | | + drive() |
| + fly() | | + fly() |
+------------------+ +------------------+
```
### Good Practice - Principle followed
```java
+------------------+ +------------------+
| <<interface>> | | <<interface>> |
| ICar | | IAirplane |
+------------------+ +------------------+
| + drive() | | + fly() |
+------------------+ +------------------+
^ ^
| |
+------------------+ +------------------+
| Car | | Airplane |
+------------------+ +------------------+
| + drive() | | + fly() |
+------------------+ +------------------+
| <<implements>> | | <<implements>> |
| ICar | | IAirplane |
+------------------+ +------------------+
``` | palanivel_sundararajangu | |
1,880,385 | How To Get Out Of Tutorial Hell | Once you finish a web development Course, I would build a project that you are interested in. Like... | 0 | 2024-06-10T02:45:00 | https://dev.to/thekarlesi/how-to-get-out-of-tutorial-hell-3mpf | webdev, beginners, programming, html | Once you finish a web development Course, I would build a project that you are interested in.
Like ask yourself, what are your interests, what are your passions. What do you like?
Don't build a Netflix clone. Everybody does that.
Don't build a Meta clone. Everybody does that.
Like, you should be original.
Do something that is unique and something that you are passionate about. Not what everyone else wants you to do.
Before we continue, if you are struggling with web development, [DM me now](https://x.com/thekarlesi) and I'll get back to you.
And the advantage of this approach, is that, when you are actually building the thing, you are more likely to enjoy what it is that you are working on. Because you like the stuff that you are working on. It is something that you are actually passionate about.
So, for me, I am interested in Career development. So, I build a job board. And I really like doing that because I am super interested in whatever it is that I was building.
### Build project without framework
This is important because it reinforces the fundamental basics understanding of the language of your choice.
Like, you want to know the basics. Like, how to write functions. Like, how to write a for loop in JavaScript.
It is only about after you have developed this project in the vanilla language of your choice that you can build it in a framework.
So, after I was done building this project in Vanilla JavaScript, I then decided to rebuild the project in the framework of my choice which was React.
I was able to better understand React as a result. Like I really understood the basics of JavaScript.
This is SUPER important. Because a lot of people are going to tell you that you should immediately start building in the framework of you choice.
Happy Coding!
Karl
P.S. If you are struggling with web development, [DM me now](https://x.com/thekarlesi) and I'll get back to you.
| thekarlesi |
1,847,033 | Kubernetes Dashboard Part 2: Cluster Management | TL;DR: In this blog, the author talks about the burning issues in cluster management and how... | 27,311 | 2024-06-10T02:42:33 | https://devtron.ai/blog/kubernetes-dashboard-for-cluster-management/ | kubernetes, devtron, devops, opensource | TL;DR: In this blog, the author talks about the burning issues in cluster management and how Devtron's Kubernetes dashboard helps you manage the on-prem/ cloud Kubernetes clusters efficiently through an intuitive dashboard.
We will discuss how the Kubernetes dashboard by Devtron can be leveraged for cluster management and how it brings immense value to all organizations' developers, DevOps, and SRE/Ops teams.
This blog is the second part of the Kubernetes Dashboard blog series. Read part 3 on the [Kubernetes Helm Release management](https://devtron.ai/blog/kubernetes-dashboard-for-helm-release-management/) to experience how easy it is for all organizations' developers and DevOps teams to manage the Helm App lifecycle. Read Part 1 on [Kubernetes Dashboard for Application Management](https://devtron.ai/blog/kubernetes-dashboard-for-application-management/) to witness the ease of deploying apps onto Kubenrtess on day 1.
[Devtron](https://devtron.ai/?ref=devtron.ai), an open-source Kubernetes-native application management platform, has introduced the Kubernetes dashboard for easy application management from a UI. Various teams can get a single-plane visibility of all resources across clusters and can edit, deploy, or troubleshoot them from the UI.
## What is K8s Cluster management?
Kubernetes cluster management is how an Ops team manages a group of Kubernetes clusters. With more microservices migrated to the cloud and containers, Kubernetes clusters are becoming more distributed and complicated to manage. Secondly, many microservices will be deployed into multiple clusters dedicated to various environments such as dev, test, pre-prod, and prod. For efficient operation, these clusters must be maintained at regular intervals for seamless deployment and delivery of applications.
## Challenges of Kubernetes cluster management
Managing and maintaining multiple clusters in the software delivery process is difficult, especially when they are spread across different cloud providers and private data centers. Following are a few challenges that the Ops team face during the cluster management process.
## High cost of maintaining multiple clusters and nodes in time
A cost-effective solution for IT organizations is to create dev and test environment clusters in local data centers and choose production clusters in public clouds like AWS or GCP. With time, multiple microservices will be built and deployed, and accordingly, the number of clusters also increases. Without a centralized tool, the Ops team doesn't get a consolidated view of which cluster needs attention in a particular time period. If they don’t proactively manage the cluster, there are chances of overutilizing resources, resulting in a huge cloud bill.
## Dependent on experts
Kubernetes is still a new technology and few experts can manage infrastructure. Only a few experts can easily perform cluster management tasks, such as creating, updating, and deleting Kubernetes clusters across multiple private and public clouds or quickly troubleshooting and resolving issues across your federated domain.
## The use of CLI is not scalable
The Ops team might like to use the Kubectl command for a few clusters. It can appear as fun to fetch data of resource utilization and take action from the CLI initially. But with time when multiple clusters have to be managed on time, Kubectl is not a scalable solution. Applying policies, carrying out node operations such as health checks, taint or cordon, and troubleshooting is time-consuming work through CLI. Additionally, it often involves a learning curve and Ops teams don't enjoy any part of it.
Devtron has launched the open-source Kubernetes dashboard for cluster management to overcome all these challenges.
## Kubernetes dashboard for effective cluster management
[](https://youtu.be/sD9BVXKZc68)
## 360° visibility of multiple clusters
Devtron Kubernetes dashboard allows users to see all the clusters across the enterprise in one plane. They can see the number of nodes in each cluster and the total CPU and memory allocated. DevOps and Ops leads can quickly visualize the resources deployed across clusters, and nodes of each cluster, and make informed decisions like cordoning or deleting a node to save cloud costs.
## Node Insights
The ops team can drill down into each cluster and find the granular details of all the nodes. They can visualize the status of each node along with other information such as roles, K8s versions, number of pods running, labels, annotations, resources, etc. The best part is the Ops team can see the resource utilization metrics such as CPU request, memory request, and namespace of each pod in a node.
## Node Operation
Devtron dashboard allows the Ops and Admins team to choose a node and carry out maintenance work such as delete, edit configurations, drain, taint, or cordon. They carry out these node operation duties easily with the click of a button from the UI. So Kubernetes admins and Ops team don't have to learn and use Kubectl all the time for setting any taint & toleration, making nodes unschedulable, or any other node operations.
## Troubleshooting
Devtron Kubernetes dashboard allows Ops or admins folks to access the cluster resources from the terminal. You can troubleshoot and debug errors with the help of tools such as Kubectl, HELM, curl, busybox, and other utilities - already provided by Devtron for Ubuntu, Alpine, and CentOS. Devtron provides you the facility to change the namespace and shell (bash/ssh) from the UI itself.
Devtron Kubernetes dashboard also provides real-time visibility into node conditions such as Network unavailability, memory pressure, or disk pressure so that you can take immediate actions. Similarly, you can also edit your node YAML to configure your node like adding labels, or annotation, increasing CPU or memory limits.
## Guaranteed outcomes of Devtron Kubernetes dashboard
With the Kubernetes dashboard, you can improve Kubernetes admin and Ops team productivity in managing Kubernetes cluster, and reduce mean time to resolve issues with central plane visibility and controls of all nodes across clusters.
## Kubernetes Dashboard Ecosystem
Open source Devtron Kubernetes dashboard is available in different deployment options on-prem and managed. Recently Devtron has also released a [desktop client version](https://devtron.ai/blog/introduction-to-devtron-kubernetes-client/) for the Kubernetes dashboard that can help you manage your k8s resources and multi-clusters.
[Try Devtron open-source Kubernetes dashboard](https://docs.devtron.ai/install?ref=devtron.ai) for free.
| devtron_inc |
1,882,534 | Test | #include <studio.h> | 0 | 2024-06-10T02:38:44 | https://dev.to/pkp/test-1k3d | `#include <studio.h>` | pkp | |
1,882,532 | Unity of developers is the power to advance the future | Nowadays humanity is not united as one. What if astronauts attack Earth? What will humanity do... | 0 | 2024-06-10T02:30:27 | https://dev.to/white_snow_b070f35998e724/unity-of-developers-is-the-power-to-advance-the-future-jjm | Nowadays humanity is not united as one.
What if astronauts attack Earth?
What will humanity do then?
Will the Earth still fight among itself then?
What if humanity becomes one only then...?
Is such a sacrifice really necessary for the unity of humanity?
I want to ask everyone in the world
Is it necessary for someone to sacrifice for unity?
Is there a need for common sorrow in order to unite?
| white_snow_b070f35998e724 | |
1,881,898 | Vídeo de apresentação e artigo do projeto de identificação facial com AWS Rekognition | Hoje vou apresentar um projeto que envolve a implementação de pontos de identificação facial em 30... | 0 | 2024-06-10T02:17:41 | https://dev.to/aws-builders/video-de-apresentacao-e-artigo-do-projeto-de-identificacao-facial-com-aws-rekognition-4efa | aws, cloud, communitybuilder, architecture | Hoje vou apresentar um projeto que envolve a implementação de pontos de identificação facial em 30 locais de monitoramento. Esse projeto será realizado utilizando diversos serviços da AWS para garantir segurança, eficiência e escalabilidade. Vamos começar com uma visão geral do projeto e, em seguida, detalhar cada componente da arquitetura.
## Descrição do projeto
O projeto tem como objetivo implementar um sistema de reconhecimento facial para monitoramento em 30 locais diferentes. Estimamos que o sistema atenderá entre 2000 a 3000 pessoas. A arquitetura do sistema precisa ser robusta, segura e capaz de lidar com o grande volume de dados gerado. Para isso, utilizaremos uma combinação de serviços da AWS.
## Locais de monitoramento
Cada um dos 30 locais de monitoramento será equipado com câmeras que capturam imagens faciais. Essas câmeras enviarão as imagens para um dispositivo de borda ou uma instância local que processará e encaminhará essas imagens para a AWS.
## Edge device/Instância local
Os dispositivos de borda ou instâncias locais são responsáveis por receber as imagens das câmeras e enviá-las para a AWS. Essa conexão será feita de forma segura, utilizando AWS Direct Connect ou VPN para garantir que os dados sejam transmitidos com segurança e eficiência.
## Amazon S3
Uma vez que as imagens chegam à AWS, elas são armazenadas no Amazon S3. O Amazon S3 é um serviço de armazenamento altamente escalável e seguro, ideal para armazenar grandes volumes de dados, como as imagens capturadas. Além disso, o S3 permite que a gente configure notificações de eventos, que serão usadas para acionar outras partes do nosso sistema.
## AWS Lambda
Quando uma nova imagem é carregada no Amazon S3, um evento é disparado para uma função AWS Lambda. O AWS Lambda é um serviço de computação serverless que permite executar código em resposta a eventos sem a necessidade de provisionar ou gerenciar servidores. O Lambda processa a imagem e a envia para o Amazon Rekognition para análise.
## Amazon Rekognition
O Amazon Rekognition é um serviço de análise de imagens que utiliza aprendizado de máquina para realizar o reconhecimento facial. Ele compara a imagem recebida com as fotos armazenadas no nosso banco de dados e retorna os resultados. Esse processo é rápido e altamente preciso, garantindo que as identificações sejam feitas corretamente.
## Amazon RDS
Os resultados do Amazon Rekognition, juntamente com as informações pessoais e fotos das pessoas, são armazenados no Amazon RDS. O Amazon RDS é um serviço de banco de dados relacional gerenciado que facilita a configuração, operação e escalabilidade de um banco de dados na nuvem. Ele oferece alta disponibilidade e segurança para os nossos dados.
## Amazon API Gateway
Para permitir que os dispositivos locais consultem os resultados do reconhecimento facial, utilizamos o Amazon API Gateway. O API Gateway facilita a criação, publicação, manutenção, monitoramento e proteção de APIs em escala. Ele expõe endpoints que os dispositivos locais podem usar para obter informações do sistema.
## AWS CloudWatch
Finalmente, utilizamos o AWS CloudWatch para monitorar todos os serviços e garantir que o sistema esteja funcionando corretamente. O CloudWatch coleta métricas e logs, permitindo que configuremos alertas e tomemos ações proativas em caso de problemas.
## Sincronização de dados
Para garantir que os dados estejam sempre atualizados, utilizamos o AWS Database Migration Service (DMS) para sincronizar o Amazon RDS com o banco de dados local. Isso assegura que quaisquer mudanças feitas no banco de dados local sejam refletidas no RDS e vice-versa, mantendo a integridade e a consistência dos dados.
## Desenho da arquitetura
Agora, vamos ver como todos esses componentes se conectam em um diagrama de arquitetura.
1. Câmeras nos locais de monitoramento capturam imagens faciais.
2. As imagens são enviadas para os dispositivos de borda ou instâncias locais.
3. Esses dispositivos transmitem as imagens para o Amazon S3 através de uma conexão segura (Direct Connect ou VPN).
4. Amazon S3 armazena as imagens e dispara eventos para o AWS Lambda.
5. AWS Lambda processará as imagens e as envia para o Amazon Rekognition.
6. Amazon Rekognition realizará o reconhecimento facial e compara as imagens com o banco de dados no Amazon RDS.
7. AWS Lambda atualizará os resultados no Amazon RDS e fornece os resultados para o Amazon API Gateway.
8. Os dispositivos locais podem consultar os resultados através do Amazon API Gateway.
9. AWS DMS sincronizará o Amazon RDS com o banco de dados local, garantindo que os dados estejam sempre atualizados.
10. AWS CloudWatch monitorará todos os serviços, garantindo a integridade e a performance do sistema.
## Conclusão
E assim, temos um sistema completo de reconhecimento facial utilizando os serviços da AWS. Essa arquitetura garante segurança, escalabilidade e eficiência, atendendo às necessidades do cliente para monitoramento em múltiplos locais. | carlosfilho |
1,882,518 | Vertical or Horizontal Scale? | System Design Horizontal Scaling or Vertical Scaling? Hi, this is my first... | 0 | 2024-06-10T02:10:06 | https://dev.to/fidsouza/vertical-or-horizontal-scale-1dje | systemdesign, designsystem | ## System Design
### Horizontal Scaling or Vertical Scaling?
Hi, this is my first article in English, so I apologize for any mistakes. I'm trying to improve my English each day. In this article, I will explain some basic principles of system design for beginners.
### Scenario
Imagine that you have built software and an API. Suddenly, you get more and more users, and your application starts experiencing timeouts. You need to increase the capacity of your server.
What is the best way to scale your server?
### Vertical Scaling
Vertical scaling involves upgrading a single machine with more resources—such as memory, processor, and disk space—instead of adding more machines.
### Horizontal Scaling
Horizontal scaling involves adding more machines to your infrastructure, increasing the number of servers rather than the resources of a single server.
### Which is the Best Choice?
It depends on various factors. Below are some good and bad points of each design:
#### Vertical Scaling
| Good Points | Bad Points |
| ---------------------------------------------- | ------------------------- |
| Consistent data | Single point of failure |
| Single point of process | Hardware limits |
| Small infrastructure (no need for load balancer)| |
#### Horizontal Scaling
| Good Points | Bad Points |
| ------------------------ | --------------------------- |
| Scales well | Potential data inconsistency|
| Resilient | Many network calls |
| Good for increasing users| More expensive to maintain |
| | Larger infrastructure |
As we can see, there are many good and bad points for each design. Horizontal scaling tends to have more complexity and costs but can handle more users and provide better resilience.
Key questions to consider:
- Is data consistency very important to you?
- Can a single point of failure destroy your company?
- Are your users critical?
- Does your company have a perspective to increase users?
These considerations can help you choose the best option. Normally, in early stages of a company, vertical scaling is the best way. However, at some point, a single machine might not be enough to support your growth.
Unfortunately, there is no definitive answer to these questions—it depends on your specific situation and moment. | fidsouza |
1,882,516 | Expertoapk - Encuentra tus juegos y aplicaciones APK favoritos | ExpertoAPK, es uno de los mejores sitios web para descargar aplicaciones y juegos para dispositivos... | 0 | 2024-06-10T02:04:47 | https://dev.to/expertoapk/expertoapk-encuentra-tus-juegos-y-aplicaciones-apk-favoritos-105g | webdev | ExpertoAPK, es uno de los mejores sitios web para descargar aplicaciones y juegos para dispositivos Android e iOS. Compartimos los últimos archivos APK de aplicaciones/juegos y MOD APK para disfrutar de las funciones premium pagas de tus aplicaciones y jue
Website: [https://expertoapk.com/](https://expertoapk.com/)
| expertoapk |
1,882,514 | [DAY 48-53] I Built A Pokemon Search App | Hi everyone! Welcome back to another blog where I document the things I learned in web development. I... | 27,380 | 2024-06-10T02:02:45 | https://dev.to/thomascansino/day-48-53-i-built-a-pokemon-search-app-pmk | beginners, learning, javascript, css | Hi everyone! Welcome back to another blog where I document the things I learned in web development. I do this because it helps retain the information and concepts as it is some sort of an active recall.
On days 48-53, I built a pokemon search app to complete the data structures & algorithms certification project in freecodecamp.
I also built an authors page and a forum leaderboard to learn about fetch API, promises, and asynchronous programming.
In the pokemon search app, the program works by just simply inputting the name of the pokemon or its ID and then it'll output its stats, image, and types.
While building this project, I struggled in making one of the functions work and took me a while to figure it out that I almost did not complete the project.
The reason is because whenever I click the left and right buttons to scroll through images, the images of the pokemon duplicate. This is because my fetch API function is within the search button event listener and within my fetch API function is another event listener for the left and right buttons. This means that my code has multiple event listeners.
When dealing with multiple event listeners, I just learned that I need to remove the event listener from the left and right buttons before adding them again. This is to prevent duplicates of images which cause a visual glitch in my app.
Moving on, in building the authors page and the forum leaderboard, I have to be honest that I only learned the syntax of fetch API and the concept of async programming. At the end of the day, it was the pokemon search app that taught me how to apply that knowledge to code. Unguided problem solving is still king when it comes to active learning.
However, we all still need guided learning from time to time.
Personally, I use freecodecamp's courses as a way to easily learn the basics and syntax because their courses are engaging and interactive which encourages active learning. From then on, I move on to unguided problem solving.
Unlike other beginners, I don't watch tutorials unless I will code with them and change something after.
When learning a new thing, I try my best to stay away from passive learning. I always rush to actual problem solving and ask questions along the way.
It worked for me in the past when I was studying for my licensure exam in civil engineering and it’s working for me now that I am 2 months into my coding journey.
Anyways, that’s all for now, more updates in my next blog! See you there! | thomascansino |
1,882,512 | Flexibags: Cost-Effective Solutions for Liquid Logistics Challenges | screenshot-1717600442438.png Flexi-bags: Affordable and Safe Solution for Moving... | 0 | 2024-06-10T01:54:02 | https://dev.to/gloria_ericksonkf_4485f0b/flexibags-cost-effective-solutions-for-liquid-logistics-challenges-312b |
screenshot-1717600442438.png
Flexi-bags: Affordable and Safe Solution for Moving Liquids
Introduction
Have you ever wondered how liquids, such as wine, oil, and juice are transported around the world in a cost-effective and safe way? You may have heard of Flexi-bags, which are innovative and economical solutions to liquid logistics challenges. This article will help you understand how Flexi-bag work and their advantages, safety measures, how to use them, quality, and different applications.
What exactly are Flexi-bags?
Flexi-bags are big plastic bags created from multiple layers of polyethylene and polypropylene which can be primarily useful for transporting non-hazardous liquid products such as for example wine, edible oils, juice concentrates, and chemical substances that are commercial
It might hold between 10 000 to 24 000 liters and it is often put into a container like twenty-foot
Flexi-bags have revolutionized how fluids are transported in bulk, resulting in cost savings and increased efficiency
Advantages of Utilizing Flexi-bags
Companies can help conserve a lot of money by making use of aquaculture tanks rather than other transport like old-fashioned, such as for example barrels, drums, and bulk like intermediate
Flexi-bags decrease freight costs by as much as 30% while increasing the item's volume which can be transported
Also, since Flexi-bags do not require any cleaning or returning after usage, there are no cleaning like extra or disposal costs
Innovation and Safety Measures
Flexi-bags are built using technology like advanced ensures the safety for the fluid product during transportation
They've been made out of multiple levels of polyethylene and polypropylene fabric that prevent item contamination, smell, and spoilage by sunlight
In addition provides a barrier that protects the liquid from the environment like surrounding leakages that are preventing damages
These layers additionally add energy preventing the Flexi-bag from bursting
Proper loading and securement associated with the Flexi-bag within the container are critical in order to avoid ruptures while making certain movement like safe
Just how to Utilize Flexi-bags
The use of Flexi-bags is just a process like easy calls for set-up like minimal
The container is prepared to receive the Flexi-bag following the Flexi-bag remains brought to the location connected with product
The container needs to be without any certainly any debris which could puncture the Flexi-bag
The Flexi-bag might be packed inside the container like twenty-foot attached to the valve this is actually put into the bottom related to container
After loading, the valve is opened, plus the Products is allowed to move in the container
Flexi-bags make filling and unloading stress-free and straightforward
Quality and Service
The employment of high-quality materials within the production means of the Flexi-bags guarantees both effectiveness and durability
Quality assurance checks are done for the manufacturing process, ensuring the bags are manufactured to the highest criteria
Reputable businesses additionally offer exceptional customer support, making certain customers get the products on time are encouraged appropriately from the utilization like safe of
Applications of Flexi-bags
Flexi-bags may be used for any transportation of varied food-grade liquids such as for example edible natural oils, wines, juice concentrates, and syrups
Furthermore, it might transport non-hazardous industrial fluids such as latex, lubricants, glycerin, among others being numerous
The flexibility and adaptability of aquaculture solution make sure they are an option like advised containers that are conventional including drums and IBCs
Conclusion
Flexi-bags are an affordable and innovative solution to liquid logistics challenges, providing numerous benefits such as cost savings, efficiency, and safety. The use of multiple layers of polyethylene and polypropylene in the Flexi-bag ensures the safety of the transported product during the journey. It is easy to use and comes with excellent customer service from reputable companies. The range of applications such as fruit juice concentrates, lubricants, and industrial chemicals makes them a valuable asset to the world of liquid logistics. Try using Flexi-bags today and experience the best in liquid transportation solutions.
Source: https://www.bestaquaculture.com/application/aquaculture-tanks | gloria_ericksonkf_4485f0b | |
1,882,511 | Trainer’s win By Press Gazette Graham Atkins Solicitor | Racehorse trainer Paul D’Arcy has accepted substantial damages and a formal apology from the... | 0 | 2024-06-10T01:51:29 | https://dev.to/grahamatkins/trainers-win-by-press-gazette-graham-atkins-solicitor-41e5 | Racehorse trainer Paul D’Arcy has accepted substantial damages and a formal apology from the publishers of the Evening Star , Ipswich, after allegations that he behaved “unprofessionally, unlawfully and disgracefully” during the sale of colt Indian Haven.
D’Arcy sued publishers Archant over the 4 June 2003 article, in which it was claimed that he had sold the horse without considering the interest of former international footballer Alan Brazil, who the Star claimed was the co-owner of Indian Haven.
D’Arcy’s solicitor advocate, Graham Atkins, told the High Court the article suggested that his client had “conducted himself unprofessionally, unlawfully and disgracefully” during the sale, and had acted “in flagrant disregard” of Brazil.
However, he said Brazil was never a registered owner of the horse.
He said that Archant had apologised for the damage caused and agreed to publish an apology in the Evening Star, as well as the damages and costs arising from the action. [Read more----->>>>](https://pressgazette.co.uk/archive-content/trainers-win/)
| grahamatkins | |
1,882,510 | Graham Atkins Solicitor | Graham is widely-acknowledged as a leading libel, privacy and reputation management lawyer,... | 0 | 2024-06-10T01:46:00 | https://dev.to/grahamatkins/graham-atkins-solicitor-4mi9 | Graham is widely-acknowledged as a leading libel, privacy and reputation management lawyer, recognised in the media, the Legal 500, Chambers and Spears for many years. He has 30 years’ experience in his field, qualifying at Dentons, then working at media and commercial firms before founding predecessor firms Atkins Solicitors, Atkins Thomson (Top Rank Legal 500) and then continuing his work with Rob Dellow and the team at Atkins Dellow. Read more: [https://www.vevioz.com/grahamatkins](https://www.vevioz.com/grahamatkins) | grahamatkins | |
1,882,509 | Aquaculture Tanks: Providing Controlled Environments for Fish Health | screenshot-1717600421944.png Aquaculture Tanks: Giving Fish a Safe and Healthy Habitat Aquaculture... | 0 | 2024-06-10T01:45:29 | https://dev.to/gloria_ericksonkf_4485f0b/aquaculture-tanks-providing-controlled-environments-for-fish-health-4gc4 | screenshot-1717600421944.png
Aquaculture Tanks: Giving Fish a Safe and Healthy Habitat
Aquaculture tanks are special tanks used for breeding and rearing fish in captivity. They provide a controlled environment for fish to thrive and grow in. By creating an environment that is tailored to specific species, farmers can ensure the optimal health and growth of their fish. We will take a closer look at the advantages, innovations, and safety features of these tanks, and how they can be used for the best results.
Great things about Aquaculture Tanks
Aquaculture tanks offer advantages that are several
With the use of these tanks, farmers have actually greater control for the conditions in which their fish grow and thrive, leading to better health like growth like general
The tanks also enable farmers to produce seafood in places where traditional techniques are really difficult as a result of geographic or constraints which are environmental
Furthermore, these aquaculture tanks give you a lot more sustainable and option like efficient produce fish
Innovations in Aquaculture Tanks
As technology develops, there are brand new and practices which are innovative tanks that are aquaculture
Today, tanks are available in different sizes, forms, and materials, built to match the particular needs of aquatic life
These tanks come constructed with advanced level water filtration, aeration systems, and heat monitoring systems, to ensure that the fish usually have an habitat like optimal
These innovations assist farmers to manage and monitor the surroundings that are environmental the tanks as well as make alterations that are corrective required
Protection Top Features Of Aquaculture Tanks
Aquaculture tanks were created with safety in your mind
They've been created from non-toxic and materials that are food-grade making certain water and seafood inside are not contaminated
The tanks may also be designed to withstand weather like harsh, physical damage, and corrosion
Furthermore, numerous tanks are fitted with anti-escape measures to prevent fish from jumping away and in to the wild
Using Aquaculture Tanks
Making use of aquaculture tanks just isn't hard, and you will be accomplished by working with a couple of basic steps
First, select the size that's right types of tank for any fish species
Next, fill the tank with water and include fish
If required, monitor the water quality and adjust water and temperature movement as needed
Lastly, maintain cleaning like regular upkeep procedures to help keep the tank in good shape
Provider and Quality of Aquaculture Tanks
When purchasing an aquaculture tank, make sure to go with a supplier like professional you with good customer care and tanks that are high-quality
Seek out manufacturers who provide warranties or guarantees in the products
A professional installation and upkeep team can help to guarantee the quality like suffered of tank
Frequently maintaining the tank with quality parts that are spare components additionally really helps ensure like remains operating optimally and free from any dilemmas
Applications of Aquaculture Tanks
Aquaculture tanks have a wide range of applications, including interior and fish like outside, research, and education
These tanks are utilized in breeding programs, hatcheries, and closed-containment systems
Using their versatility and freedom, aquaculture tanks may also be helpful for growing other creatures that are aquatic such as algae, shrimp, oysters, plus much more
Conclusion
Aquaculture tanks represent a significant innovation in contemporary aquafarming, providing farmers with a controlled environment that allows fish to thrive and grow in the best possible conditions. The advantages of these tanks are many, including greater efficiency, optimal growth performance, and environmental sustainability. With the latest advancements in technology, these tanks will continue to improve and provide farmers with even more benefits. By choosing the right tank size, maintaining it well, and implementing appropriate technology, aquaculture tanks can help you to create a thriving, sustainable, and profitable aquaculture farm.
Source: https://www.bestaquaculture.com/application/aquaculture-tanks | gloria_ericksonkf_4485f0b | |
1,882,508 | Lawyer of the week: Graham Atkins Solicitor | Graham Atkins Solicitor , a partner at Atkins Thomson, acted for President Poroshenko of Ukraine in a... | 0 | 2024-06-10T01:44:01 | https://dev.to/grahamatkins/lawyer-of-the-week-graham-atkins-solicitor-50fh | Graham Atkins Solicitor , a partner at Atkins Thomson, acted for President Poroshenko of Ukraine in a libel action against the BBC over allegations that £300,000 was paid to extend talks between him and President Trump The BBC accepted the claim was completely untrue, apologised and paid £50,000 damages plus. [Read more--->>>>](https://issuu.com/grahamatkins/docs/lawyer_of_the_week_graham_atkins_solicitor_who_ac) | grahamatkins | |
1,882,507 | Cherie Blair starts hacking legal case — Graham Atkins Solicitor | Cherie Blair is a barrister and campaigner for prison reform. Cherie Blair has started legal... | 0 | 2024-06-10T01:37:20 | https://dev.to/grahamatkins/cherie-blair-starts-hacking-legal-case-graham-atkins-solicitor-23oc | Cherie Blair is a barrister and campaigner for prison reform. Cherie Blair has started legal proceedings over phone hacking, her solicitor has confirmed.
The wife of former Prime Minister Tony Blair, herself a prominent barrister, launched a claim on Tuesday.
Mrs Blair’s [Graham Atkins Solicitor](https://atkinsdellow.com/contact/) confirmed a claim had been made “in relation to the unlawful interception of her voicemails”. She is thought to be suing News Group Newspapers, but a News International spokeswoman declined to comment. The now-defunct News of the World (NoW) was published by News Group, part of News International, which is a subsidiary of Rupert Murdoch’s News Corporation.
Various public figures have settled legal claims over hacking with News Group. Mrs Blair left Downing Street when Mr Blair resigned as prime minister in 2007.
She still works as a barrister, is a campaigner for prison reform and makes high-profile appearances — most recently at the first meeting of the International Council on Women’s Business Leadership in Washington in January, alongside US Secretary of State Hillary Clinton.
In November, Mr Blair’s former press secretary Alastair Campbell told the Leveson Inquiry into media ethics he had suspected Mrs Blair’s friend Carole Caplin of tipping off newspapers about her.
He told the inquiry: “During various periods of the time that we were in government, we were very, very concerned about how many stories about Cherie and Carole Caplin were getting out to different parts of the media.
“I had no idea how they were getting out. In relation to not just Carole, and not just Cherie, but all of us who were involved in the government at that time, all sorts of stuff got out.
“Some of it may have got out because people who were within the government were putting it out there. Perhaps. That does happen.
“But equally there were all sorts of stories where you would just sit there scratching your head thinking, ‘How the hell did that get out?’”
Since the phone-hacking allegations had emerged, Mr Campbell said he had changed his mind.
“I did at times directly accuse Carole Caplin of tipping off newspapers about what she was up to. I’ve since apologised to her for that because I now realise I was completely wrong,” he said.
BBC home affairs correspondent Danny Shaw said the legal move by Mrs Blair may have been influenced by Mr Campbell’s comments.
Our correspondent said Mr Campbell’s evidence provided an insight into concerns that newspapers always seemed to know what her engagements were and that he said he had never been able to ascertain how news of Mrs Blair’s pregnancy in 1999 was obtained by the press. [Read more ----->>>>>](https://www.bbc.com/news/uk-17133210)
| grahamatkins | |
1,882,506 | Sử dụng MongoDB hiệu quả trong Nodejs | MongoDB là một database hướng tài liệu (document), một dạng NoSQL database. Vì thế, MongoDB sẽ tránh... | 0 | 2024-06-10T01:35:46 | https://dev.to/duongphan/su-dung-mongodb-hieu-qua-trong-nodejs-2kh9 | mongodb, webdev, javascript, node | **MongoDB** là một database hướng tài liệu (document), một dạng NoSQL database. Vì thế, MongoDB sẽ tránh cấu trúc table-based của relational database để thích ứng với các tài liệu như JSON có một schema rất linh hoạt gọi là BSON. MongoDB sử dụng lưu trữ dữ liệu dưới dạng Document JSON nên mỗi một collection sẽ các các kích cỡ và các document khác nhau. Các dữ liệu được lưu trữ trong document kiểu JSON nên truy vấn sẽ rất nhanh. 
## 1. Khi nào nên dùng MongoDB?
Ví dụ như các hệ thống realtime (thời gian thực) yêu cầu phản hồi nhanh, Các hệ thống bigdata với yêu cầu truy vấn nhanh hay các hệ thống có lượng request lớn thì MongoDB sẽ là sự lựa chọn ưu tiên hơn CSDL quan hệ. Tùy theo dự án và trường hợp cụ thể để sử dụng CSDL quan hệ hay sử dụng MongoDB đem lại hiệu quả cao.
## 2. Ưu điểm của MongoDB
- Dữ liệu lưu trữ phi cấu trúc, không có tính ràng buộc, toàn vẹn nên tính sẵn sàng cao, hiệu suất lớn và dễ dàng mở rộng lưu trữ.
- Dữ liệu được caching (ghi đệm) lên RAM, hạn chế truy cập vào ổ cứng nên tốc độ đọc và ghi cao.
## 3. Nhược điểm của MongoDB
- Không ứng dụng được cho các mô hình giao dịch nào có yêu cầu độ chính xác cao do không có ràng buộc.
- Không có cơ chế transaction (giao dịch) để phục vụ các ứng dụng ngân hàng.
- Dữ liệu lấy RAM làm trọng tâm hoạt động vì vậy khi hoạt động yêu cầu một bộ nhớ RAM lớn.
- Mọi thay đổi về dữ liệu mặc định đều chưa được ghi xuống ổ cứng ngay lập tức vì vậy khả năng bị mất dữ liệu từ nguyên nhân mất điện đột xuất là rất cao.
**Xem chi tiết “Cách Kết Nối MongoDB Trong Nodejs” tại:**
[Cách Kết Nối MongoDB Trong Nodejs](https://devful-blog.vercel.app/blogs/cach-ket-noi-mongodb-trong-nodejs)
**Website mà mọi người có thể xem thêm nhiều bài viết blog hay về công nghệ thông tin** [Devful Blog](https://devful-blog.vercel.app/) (sẽ vô cùng hữu ích cho mọi người đấy nhé) | duongphan |
1,882,505 | Lawyer of the week: Graham Atkins, solicitor who acted for Poroshenko in BBC libel case | Graham Atkins, a partner at Atkins Thomson, acted for President Poroshenko of Ukraine in a libel... | 0 | 2024-06-10T01:33:43 | https://dev.to/grahamatkins/lawyer-of-the-week-graham-atkins-solicitor-who-acted-for-poroshenko-in-bbc-libel-case-3m2i | Graham Atkins, a partner at Atkins Thomson, acted for President Poroshenko of Ukraine in a libel action against the BBC over allegations that £300,000 was paid to extend talks between him and President Trump. The BBC accepted the claim was completely untrue, apologised and paid £50,000 damages plus legal costs.
[Graham Atkins Solicitor](https://atkinsdellow.com/)
What were the main issues in this case?
Foreign heads of state rarely take libel action in England, so it was not straightforward. We succeeded in a preliminary hearing on meaning — the judge ruled that the broadcast and article meant the president authorised or procured a corrupt payment through a back channel to President Trump. The allegation was obviously gravely damaging, not just here, but globally. [Read more---->>>>](https://www.thetimes.co.uk/article/lawyer-of-the-week-graham-atkins-solicitor-who-acted-for-poroshenko-in-bbc-libel-case-sldjgcjw6)
| grahamatkins | |
1,882,504 | How I Built My Own Personalized Google: A Step-by-Step Guide to AI Mastery | Meet My Google: Your Own Simple, Personalized AI Search, Tailor-Made Full Article What is This... | 0 | 2024-06-10T01:31:51 | https://dev.to/exploredataaiml/how-i-built-my-own-personalized-google-a-step-by-step-guide-to-ai-mastery-48ne | machinelearning, rag, ai | Meet My Google: Your Own Simple, Personalized AI Search, Tailor-Made
[Full Article] (https://medium.com/ai-in-plain-english/how-i-built-my-own-personalized-google-a-step-by-step-guide-to-ai-mastery-af0eccc11883)
**What is This Article About?**
○ This article provides a step-by-step guide on building a personalized Google-like search engine using AI technology.
○ It covers the process of crawling websites, selecting relevant sites, indexing their content, and creating a natural language search interface powered by a retrieval-augmented generation (RAG) model.
○ The focus is on the steps after web crawling, such as filtering and indexing the crawled data, and building the search interface.
**Why Read It?**
○ Understand how to leverage AI and natural language processing (NLP) technologies to build a powerful search tool that can understand and respond to natural language queries.
○ Discover the power of combining different technologies like text embedding, vector search, and language models to create a sophisticated and personalized search experience.
**Let's Design**
The article describes the design of various components, including:
Index Selector, Indexer and Vector Database: Indexes the content from the selected URLs using techniques like text splitting, embedding generation, and vector storage (Chroma vector db).
Large Language Model (LLM): Integrates a large language model for understanding and generating natural language responses.
User Interface (UI)
Retrieval and Response Generation: Leverages the LLM to retrieve relevant information from the indexed data and generate coherent responses.
**Let's Get Cooking!**
○ The article provides a GitHub repository link with the code for the project. ○ It explains that the code is concise and modular, making it an excellent learning experience for exploring practical applications of AI technologies.
○ The article then breaks down the code into three main modules:
Index Selector Module: Filters active URLs from a JSON file containing web crawler data.
Indexer Module: Indexes the content from the active URLs using techniques like text splitting, embedding generation, and vector storage.
Aoogle Module: user-friendly interface
**Closing thoughts**
○ Building a personalized search engine is no longer limited to tech giants like Google, thanks to advancements in AI and NLP technologies.
○ By following the steps outlined in the article, readers can gain a deeper understanding of how search engines work and acquire practical skills in combining different AI technologies to solve complex problems. | exploredataaiml |
1,882,503 | Fish Farming Tanks: Supporting Sustainable Aquaculture Practices | Fish Farming Tanks: supporting Aquaculture which are sustainable procedures You might've currently... | 0 | 2024-06-10T01:31:10 | https://dev.to/gloria_ericksonkf_4485f0b/fish-farming-tanks-supporting-sustainable-aquaculture-practices-5g95 |
Fish Farming Tanks: supporting Aquaculture which are sustainable procedures
You might've currently seafood which was receive being farming their produced by exercising possible for farmers to improve seafood in managed surroundings like tanks if you should be fishing that is considering. These tanks decide to try particularly meant to mimic the habitat that are normal of, supplying these utilising the environment which you want test grow plus thrive. The headlines that will be often great that Fish Farming Tanks are handling feel a whole much more popular for their gurus being more. It's usually a seems which are often better due to the many options which are often come which is without a doubt Fish that is effective Farming:
Advantages of Fish tanks that has been farming
Most likely the perks being further try obvious of aquaculture tanks may get being the capacity to safeguarded the handle with regards to the surroundings being environmental. Farmers may adjust temperature, environment amounts, plus fluid circumstances to mimic the seafood's normal habitat, ensuring developing which are optimal best triumph rates.
A benefit that was additional plus tanks decide to try they decrease use that are fluid. Mainstream Fish Farming Tanks utilize a levels which has been enormous of, sooner as later contamination that is degradation that is causing ecological. Plus Fish Farming Tanks, there was clearly much less water wastage, aside from the fluid ended up being a lot cleaner, that supports the seafood's minimizes plus developing their reference to circumstances.
Innovation plus Safety
The job of Fish Farming Tanks in aquaculture industry has produced innovations and this can be many the agriculture areas. Farmers could effectively have the handle regarding the the environment to be sure every seafood gets dinners which has been liquid that was optimal plus environment merge, tanks consists of top-notch facts that areas safer agriculture methods.
Innovation that are end that'll be close being use of automated ways which may be eating feeds the seafood at exact size, ensuring the seafood have diet that was balanced. This feature that is particular is particular are specific is specific is definite spend which choose to decide to try minimal of and also will feel supplying the uniform size for the seafood inside the tank.
Quality plus Application
Fish agriculture tanks have been developed to offer the surroundings that are environmental test close helps the seafood's well-being plus developing. The tanks are produced to experiencing durable plus versatile, producing them perfect for a mixture that was wide of applications.
The Fish Farming Tanks are now actually an task which can be configure which is solutions being easy which are often usually especially diffent, ensuring farmers could figure out the tank on which caters with their requirements which may be certain. Either perhaps you are tilapia that is trout which has been increasing because catfish, there is a Fish Farming Tanks which may manage their needs that will feel certain effortlessly.
How to Create Use Of Fish Farming Tanks
Making use of Fish Farming Tanks hadn't being a amount that is significant of, furthermore for newbies. The tanks Products are made to experiencing user-friendly, plus farmers can adjust the environmental surroundings simpleness which are being had been ecological. Listed below are the methods which can be few are utilize that is seafood which is often tanks being easy
1. Clean the Tank : it is actually neat plus with no contaminants which might damage the seafood before beginning having the tank being amazing verify.
2. put Fish - whenever tank try clean, incorporate the seafood for their tank slowly, letting them acclimatize for their environment. Track quality that was fluid that is creating are essential like seafood that will be most.
3. Feeding - incorporate an eating which will be automated to feed the seafood usually. Make certain that the foodstuff are of good quality plus balanced.
3. Monitor Water Levels : monitor fluid amount often and keep maintaining them for the seafood's optimal developing. Trade the fluid whenever necessary, ensuring to include the chemical compounds which could cautiously being better keep the fluid safeguarded for the seafood.
Source: https://www.bestaquaculture.com/application/aquaculture-tanks | gloria_ericksonkf_4485f0b | |
1,882,420 | CSS Art: June (The peaceful days) | This is a submission for Frontend Challenge v24.04.17, CSS Art: June. Inspiration Today I... | 0 | 2024-06-10T01:22:13 | https://dev.to/soorajsnblaze333/css-art-june-4hme | frontendchallenge, devchallenge, css | _This is a submission for [Frontend Challenge v24.04.17](https://dev.to/challenges/frontend-2024-05-29), CSS Art: June._
## Inspiration
Today I am posting a figment of my imagination in the form of the June CSS Challenge. Where I live, June means it's sunny, cloudy and raining at the same time. And where I live is green and full of trees and also has deer nearby. So I put them all together. Whenever I open my patio windows, I see something like this. This is what I tried to put in my CSS art. This is my inspiration.
## Demo (Please re-run the pen for the best results)
{% codepen https://codepen.io/SoorajSnBlz/pen/RwmZxeW %}
[Here](https://codepen.io/SoorajSnBlz/pen/RwmZxeW) is the codepen link for the project.
## Journey
<!-- Tell us about your process, what you learned, anything you are particularly proud of, what you hope to do next, etc. -->
## Step 1: Where to start
Figuring out what kind of a scene I was gonna create. This is one of the most hardest parts of the challenge, as if I choose something that would be too hard, I would lose interest and would give up. It had to be something that I see every day and I love seeing so that I would finish it no matter what. That is why I chose this.
## Step 2: What are all the main parts
Now let's figure out what all will make up the scene. Like I mentioned it's hot, its cloudy, so we need the Sun and some clouds. Next I mentioned it's green and full of trees, so we also need green meadows and a few trees. Next I mentioned deer, since I cannot add a whole bunch of deer, I represent all of them together as one single deer.
## Step 3: Putting all the parts together
Now that we have all the parts, we start off creating each part separately, I started off with the sky, with the Sun in the middle of the sky and some static clouds. Wait! clouds move don't they, so I added some keyframes for the clouds to move like they do in the sky.
Next up would be some green meadows. I took some inspiration off of google by searching for some low poly images for a summer scene and I remembered the windows wallpaper we all used to see.
So after I added those cute little meadows, let's add some trees on each of them. Now let's add the main character, our deer.
The deer was the part that took the most time to create as it has a lot of elements on it. The body, neck, head, ears, tail, front legs, hind thighs, legs, antlers aaaah!, so many parts. Let's start from the body. I created the deer based off a few google results like "low poly deer"
After the deer was painstakingly created, I couldn't just leave it static. I had to give it some life, so I animated the deer bending its neck to eat some grass, its tail and ears twitching also.
Finally it was to put everything together as I had envisioned in my mind. When I open my patio window I see this image, so I made an opening window out of the screen.
This is my first css challenge not following some of the conventional UI design and development techniques. I thank dev.to for providing this opportunity to explore and showcase my creativity.
| soorajsnblaze333 |
1,882,502 | Flexibags: Safe and Secure Transport for Liquids of All Types | Flexibags: Safe plus Secure Transport for Liquids on most types Because global trade goes on, the... | 0 | 2024-06-10T01:20:48 | https://dev.to/gloria_ericksonkf_4485f0b/flexibags-safe-and-secure-transport-for-liquids-of-all-types-2e59 |
Flexibags: Safe plus Secure Transport for Liquids on most types
Because global trade goes on, the attention in safer plus transportation that are efficient of enhances. Flexibags is an revolutionary plus solution that are affordable transport of liquids on most sorts. Flexibags is actually larger bags produced from polyethylene because polypropylene that may hold around 24,000 liters of fluid plus straight that was loaded the container that is standard-sized has been 20-foot.
Advantages of Flexibags
Flexibags or aquaculture tanks supplying a pros being few more types of fluid transportation. First, they are affordable because transportation companies just build containers that are standard. second, they occupy less space than traditional transport practices like drums because containers, and they loading that is also providing are further release effectiveness, they provide the cleaner, greener way of transporting liquids since they are recyclable plus reusable, reducing the amount of invest developed.
Innovation of Flexibags
Flexibags certainly are a innovation that are fairly new have been around at below two years which are complete. September these were first developed plus patented in 2001 by Techno Group. All around the globe from the right time then, the technology are amount which are advanced increasing by services. Nowadays, they have been trustworthy by various businesses, like beverage plus food, pharmaceuticals, plus items which is agricultural.
Protection of Flexibags
One of the most considerations being transporting that is important was protection. Flexibags provide a safer plus techniques that are safer of by ensuring the fluid remains intact during transport. The aquaculture tanks had been developed plus the safety which was few, as an outside layer of heavy-duty textile and the sealing that are tight in order to avoid leakages since spills during trips. Another included benefit could be the understood fact that is undeniable there's absolutely no contamination that is outside tampering throughout transport due to the fact the articles remain entirely enclosed.
Use of Flexibags
Flexibags are versatile and you will be used for the transportation of varied forms of liquids. They are specially matched to transporting liquids which is non-hazardous wines plus natural oils, nonetheless could also be used for just about any other designs of liquids like fluid as fresh fruit juice. Flexibags is perfect for the transportation of bulk liquid that can be further processed into end products. They may be able be placed because intermediate possibilities inside the string which are give securing that no damage because contamination to the fluid occurs.
Using Flexibags
Using Flexibags Products take to quite simple, and also the procedure involves treatments that are a couple of. First, the Flexibag decide to try taken to the shipper, who then helps make sure that the container is free plus neat of any things being worldwide. Following the container is ready, the Flexibag decide to try stuffed utilising the stuffing center or possibly a pump. The manufacturer provides you with instructions which could yes feel detailed creating the situation is exactly loaded. After filling, the valve is closed, as well as container will be delivered plus probably sealed to the positioning.
Source: https://www.bestaquaculture.com/application/aquaculture-tanks | gloria_ericksonkf_4485f0b | |
1,882,471 | Các Thư Viện React.js Nên Sử Dụng | Giới thiệu React.js đã và đang trở thành một trong những thư viện JavaScript phổ biến nhất... | 0 | 2024-06-10T01:19:12 | https://dev.to/duongphan/cac-thu-vien-reactjs-nen-su-dung-4cea | react, javascript, webdev, programming | ## Giới thiệu
React.js đã và đang trở thành một trong những thư viện JavaScript phổ biến nhất cho phát triển giao diện người dùng. Nhờ khả năng linh hoạt, hiệu quả và cộng đồng hỗ trợ lớn mạnh, React.js được sử dụng để xây dựng mọi thứ, từ các trang web đơn giản đến các ứng dụng web phức tạp.
Tuy nhiên, với vô số thư viện React.js có sẵn, việc lựa chọn những thư viện phù hợp cho dự án của bạn có thể trở nên khó khăn. Bài viết này sẽ giới thiệu cho bạn một số thư viện React.js tốt nhất mà bạn nên sử dụng trong năm 2024.
## Các Thư Viện React.js Nên Sử Dụng
### 1. Quản lý trạng thái
- **Redux:** Một thư viện quản lý trạng thái phổ biến cho các ứng dụng React.js. Redux giúp bạn tổ chức trạng thái ứng dụng của mình một cách hiệu quả và dễ dự đoán. 
- **MobX:** Một thư viện quản lý trạng thái nhẹ và dễ sử dụng cho React.js. MobX sử dụng lập trình phản ứng để tự động cập nhật giao diện người dùng khi trạng thái thay đổi. 
- **Context API:** Một API tích hợp sẵn trong React.js cho phép bạn chia sẻ trạng thái giữa các thành phần React mà không cần sử dụng thư viện bên ngoài.
### 2. Giao diện người dùng
- **Material-UI:** Một thư viện giao diện người dùng dựa trên Material Design của Google. Material-UI cung cấp một bộ đầy đủ các thành phần giao diện người dùng đẹp mắt và dễ sử dụng.
- **Ant Design:** Một thư viện giao diện người dùng dựa trên ngôn ngữ thiết kế Enterprise của Ant Financial. Ant Design cung cấp một bộ thành phần giao diện người dùng phong phú và có thể tùy chỉnh cao.
- **Bootstrap React:** Một thư viện giao diện người dùng dựa trên Bootstrap CSS framework. Bootstrap React giúp bạn dễ dàng tạo các giao diện người dùng đáp ứng bằng React.js.
### 3. Định tuyến
- **React Router:** Một thư viện định tuyến phổ biến cho React.js. React Router giúp bạn quản lý các URL trong ứng dụng web của mình và hiển thị các thành phần React phù hợp. 
- **Next.js:** Một framework React.js giúp bạn dễ dàng tạo các ứng dụng web một trang (SPA) và các trang web tĩnh. Next.js bao gồm một bộ định tuyến tích hợp sẵn dựa trên React Router.
### 4. Xử lý dữ liệu
- **Axios:** Một thư viện HTTP client phổ biến cho JavaScript. Axios giúp bạn dễ dàng thực hiện các yêu cầu HTTP và truy xuất dữ liệu từ API. 
- **React Query:** Một thư viện quản lý dữ liệu cho React.js. React Query giúp bạn dễ dàng truy xuất, lưu trữ và cập nhật dữ liệu trong các ứng dụng React.js của mình.
- **Apollo Client:** Một thư viện GraphQL client phổ biến cho JavaScript. Apollo Client giúp bạn dễ dàng truy xuất dữ liệu từ các GraphQL API.
## 5. Kiểm thử
- **Jest:** Một framework kiểm thử đơn vị phổ biến cho JavaScript. Jest giúp bạn dễ dàng viết và chạy các bài kiểm thử đơn vị cho mã React.js của mình.
- **React Testing Library:** Một thư viện kiểm thử React.js giúp bạn dễ dàng viết các bài kiểm thử tích hợp cho các thành phần React.js của mình.
- **Cypress:** Một công cụ kiểm thử đầu cuối cho các ứng dụng web. Cypress giúp bạn dễ dàng kiểm thử giao diện người dùng và chức năng của ứng dụng React.js của mình.
Ngoài ra, còn có rất nhiều thư viện React.js khác có thể hữu ích cho dự án của bạn. Việc lựa chọn thư viện phù hợp phụ thuộc vào nhu cầu cụ thể của bạn.
Bài viết bạn có thể tham khảo: [Giới Thiệu React-Query Và Lý Do Tại Sao Bạn Nên Sử Dụng Nó Trong Dự Án React Của Bạn](https://devful-blog.vercel.app/blogs/gioi-thieu-react-query-va-ly-do-tai-sao-ban-nen-su-dung-no-trong-du-an-react-cua-ban)
Bạn có thể xem nhiều thông tin hơn tại website [Devful Blog](https://devful-blog.vercel.app/) để ủng hộ chúng mình nha :3 | duongphan |
1,882,470 | Top Methods to Find GitHub Users | Project:- 7/500 GitHub User Finder project. Description The GitHub User Finder... | 27,575 | 2024-06-10T01:14:10 | https://dev.to/raajaryan/best-ways-to-search-for-github-users-53no | javascript, beginners, opensource, github | ### Project:- 7/500 GitHub User Finder project.
## Description
The GitHub User Finder is a web application designed to help users quickly and easily find GitHub profiles and view their details. By simply entering a GitHub username, users can retrieve profile information such as repositories, followers, following, and more. This tool is particularly useful for developers, recruiters, and anyone interested in exploring GitHub profiles efficiently.
## Features
- **Search GitHub Users**: Enter a GitHub username to fetch and display user profile information.
- **Profile Details**: View detailed information about the user including avatar, bio, repositories, followers, and following.
- **Repository List**: Display a list of public repositories with links to each repository.
## Technologies Used
- **JavaScript**: For dynamic interactions and API requests.
- **HTML**: To structure the web pages.
- **CSS**: For styling the application.
## Setup
Follow these instructions to set up and run the GitHub User Finder project on your local machine:
1. **Clone the repository**:
```sh
git clone https://github.com/deepakkumar55/ULTIMATE-JAVASCRIPT-PROJECT.git
```
2. **Navigate to the project directory**:
```sh
cd Web Scraping and API Projects/1-github_user_finder
```
3. **Open the project**:
Open `index.html` in your preferred web browser to view the application.
4. **Usage**:
- Enter a GitHub username in the search bar and click on the search button.
- The user's profile information will be displayed on the screen.
## Contribution
Contributions are welcome! To contribute to the GitHub User Finder project, follow these steps:
1. **Fork the repository**:
Click the "Fork" button on the top right corner of the repository page.
2. **Clone your forked repository**:
```sh
git clone https://github.com/deepakkumar55/ULTIMATE-JAVASCRIPT-PROJECT.git
```
3. **Create a new branch**:
```sh
git checkout -b feature/your-feature-name
```
4. **Make your changes**:
Implement your feature or fix a bug.
5. **Commit your changes**:
```sh
git commit -m "Add your feature or fix description"
```
6. **Push to your forked repository**:
```sh
git push origin feature/your-feature-name
```
7. **Create a pull request**:
Go to the original repository on GitHub and click on the "New Pull Request" button. Fill in the necessary details and submit.
## Get in Touch
If you have any questions or need further assistance, feel free to open an issue on GitHub or contact us directly. Your contributions and feedback are highly appreciated!
---
Thank you for your interest in the GitHub User Finder project. Together, we can build a more robust and feature-rich application. Happy coding! | raajaryan |
1,877,504 | [Hono] Simple Messaging App Using Bun and WebSocket | We often see implementations of WebSocket using the Express framework and Socket.io. However, there... | 0 | 2024-06-10T01:11:38 | https://dev.to/yutakusuno/hono-simple-messaging-app-using-bun-and-websocket-mnk | hono, bunjs, typescript, react | We often see implementations of WebSocket using the Express framework and Socket.io. However, there seem to be fewer examples of WebSocket implementations using Hono, a framework that is similar to Express but faster and lighter. In this article, I will introduce the implementation of a simple messaging app using Hono and Bun, a JavaScript runtime.
This project has a simple structure, and it is possible to extend various features such as database utilization and multiple room management functions. Initially, I aimed to write an article focused on WebSocket that could be read in less than 3 minutes, but I was drawn in by the charm of Hono, and the volume of the article increased more than expected. Now, let’s move on to the details.
## Tech Stack
Frontend:
- React
- TypeScript
- [WebSocket API](https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API)
Backend:
- [Hono](https://hono.dev/)
- TypeScript
JavaScript Runtime(Both Frontend and Backend):
- [Bun](https://bun.sh/) v1.1.8
## Project Structure
```txt
├── frontend
│ ├── src
│ │ ├── App.css
│ │ ├── App.tsx
│ │ ├── index.css
│ │ ├── main.tsx
│ │ └── vite-env.d.ts
│ ├── bun.lockb
│ ├── index.html
│ ├── package.json
│ ├── tsconfig.json
│ ├── tsconfig.node.json
│ └── vite.config.ts
├── server
│ └── index.ts
├── shared
│ ├── constants.ts
│ └── types.ts
├── bun.lockb
├── package.json
└── tsconfig.json
```
- Root directory and server directory: Hono app
- Frontend directory: React app
- Shared directory: Constants and types used in common between frontend and backend
I have omitted settings files for TailwindCSS, etc. The structure is such that the Hono app wraps the React app. This was an easy-to-manage configuration when implementing RPC (Remote Procedure Call), where the frontend and backend share dependencies and type definitions of Hono.
Repository:
https://github.com/yutakusuno/bun-hono-react-websocket
## UI
## What is Hono?
Hono is a web application framework that is extremely fast and lightweight. It operates on any JavaScript runtime and includes built-in middleware and helpers. Its implementation is similar to Express, making it intuitive to use. It also features a clean API and first-class support for TypeScript.
For more details, visit: https://hono.dev/
## What is Bun?
Bun is a JavaScript runtime and an all-in-one toolkit for JavaScript and TypeScript applications. It is written in Zig and internally uses JavaScriptCore, a performance-oriented JS engine created for Safari. It also implements Node.js and Web API natively and provides all the tools necessary to build JavaScript applications, including a package manager, test runner, and bundler.
For more details, visit: https://bun.sh/
## What is WebSocket?
WebSocket is a protocol that creates a persistent bidirectional communication channel between a web browser and a server. With this technology, web applications can exchange data with the server in real-time without the client initiating a new HTTP request or reloading the page.
The operation of WebSocket goes through the following process:
**Starting the handshake**: The client sends the following HTTP request to the server, requesting an upgrade from HTTP to WebSocket.
```txt
GET /chat HTTP/1.1
Host: server.example.com
Upgrade: websocket
Connection: Upgrade
Sec-WebSocket-Key: dGhlIHNhbXBsZSBub25jZQ==
Origin: http://example.com
Sec-WebSocket-Protocol: chat, superchat
Sec-WebSocket-Version: 13
```
**Server response**: If the server supports WebSocket and agrees to the upgrade, the server responds with its own handshake, confirming the switch to the WebSocket protocol.
```
HTTP/1.1 101 Switching Protocols
Upgrade: websocket
Connection: Upgrade
Sec-WebSocket-Accept: s3pPLMBiTxaQ9kYGzzhZRbK+xOo=
Sec-WebSocket-Protocol: chat
```
**Data transmission**: While maintaining an open connection, the client and server can exchange data.
This diagram shows the basic flow of WebSocket communication between the client and server. First, the client requests an upgrade to WebSocket from the server via an HTTP request. Then, the server returns an HTTP response, confirming the protocol switch. This opens the connection, and the client and server can exchange data.
I would like to delve deeper into this area to understand it better, but that’s it for now.
The request and response examples for the handshake are quoted from the RFC.
https://datatracker.ietf.org/doc/html/rfc6455#section-1.2
## Implementation
I will focus on key implementations by extracting parts from this repository. I want to explain as much as possible, including the import of dependencies and the definition of variables, so there are parts where the actual implementation has been rewritten as needed. If you want to understand in detail, please read the source code of the repository in parallel, treating this article as supplementary.
You can check out the completed application here: https://github.com/yutakusuno/bun-hono-react-websocket
### Backend: WebSocket Configuration
server/index.ts
```typescript
import { Hono } from 'hono';
import { createBunWebSocket } from 'hono/bun';
const app = new Hono();
const { upgradeWebSocket, websocket } = createBunWebSocket();
const server = Bun.serve({
fetch: app.fetch,
port: 3000,
websocket,
});
export default app;
```
When launching an HTTP server with Bun, it is recommended to use `Bun.serve`. Pass an instance of the Hono class to this fetch handler and specify the port of the backend server. The websocket imported from `createBunWebSocket` is a Hono middleware, WebSocket handler, implemented for Bun.
### Backend: WebSocket Connection and Disconnection
server/index.ts
```typescript
import type { ServerWebSocket } from 'bun';
const topic = 'anonymous-chat-room';
app.get(
'/ws',
upgradeWebSocket((_) => ({
onOpen(_, ws) {
const rawWs = ws.raw as ServerWebSocket;
rawWs.subscribe(topic);
console.log(`WebSocket server opened and subscribed to topic '${topic}'`);
},
onClose(_, ws) {
const rawWs = ws.raw as ServerWebSocket;
rawWs.unsubscribe(topic);
console.log(
`WebSocket server closed and unsubscribed from topic '${topic}'`
);
},
}))
);
```
The behavior when a WebSocket connection is opened and closed is defined. When a connection is opened, it starts subscribing to a specific topic `synonymous-chat-room`, and when a connection is closed, it ends that subscription. In this app, when an anonymous user opens a page, it establishes a WebSocket communication and starts subscribing to the topic. This time, there is no limit to the number of people who can subscribe to the same topic.
Subscription to topics is not directly supported in Hono’s implementation, so we need to use Bun’s `ServerWebSocket`. Specifically, this is achieved by extending the `ws` in `onOpen`. Looking at the source code of Hono, `ws.raw` is the WebSocket of the Bun server, and by using this, we can handle Bun native WebSocket and implement topic subscription. Pass any topic name as a string to subscribe and unsubscribe.
Hono’s implementation of Bun WebSocket:
https://github.com/honojs/hono/blob/main/src/adapter/bun/websocket.ts
Official documentation for Bun WebSocket:
https://bun.sh/docs/api/websockets
### Backend: /messages Endpoint
server/index.ts
```typescript
import { zValidator } from '@hono/zod-validator';
const messages: Message[] = [];
const messagesRoute = app
.get('/messages', (c) => {
return c.json(messages);
})
.post(
'/messages',
zValidator('form', MessageFormSchema, (result, c) => {
if (!result.success) {
return c.json({ ok: false }, 400);
}
}),
async (c) => {
const param = c.req.valid('form');
const currentDateTime = new Date();
const message: Message = {
id: Number(currentDateTime),
date: currentDateTime.toLocaleString(),
...param,
};
const data: DataToSend = {
action: publishActions.UPDATE_CHAT,
message: message,
};
messages.push(message);
server.publish(topic, JSON.stringify(data));
return c.json({ ok: true });
}
)
.delete('/messages/:id', (c) => {
// Logic of message deletion
});
export type AppType = typeof messagesRoute;
```
This messages resource supports GET, POST, DELETE methods. The GET method retrieves the message history of users subscribing to the same topic, the POST method creates a new message, and the DELETE method deletes a specific message. Here, I will focus on explaining POST /messages.
The server instance was created when creating the Bun server for use in this endpoint. By calling `publish()` on the `server` instance, we can broadcast to all clients subscribing to the same topic. According to the official document, it is also possible to broadcast to all subscribers of the topic, excluding the socket that is called `publish()`, but it is not used this time.
Also, like Express, we can implement middleware on the endpoint by passing a handler before processing the logic of the resource. This is part of `zValidator`. This allows us to handle `param` in a type-safe manner.
In `type AppType`, the type of API defined in `messagesRoute` is exported. This is utilized in the RPC implementation on the frontend described later. By sharing the API specification with the client, we can achieve a type-safe API implementation.
shared/types.ts
```typescript
import { z } from 'zod';
export const MessageFormSchema = z.object({
userId: z.string().min(1),
text: z.string().trim().min(1),
});
```
I used zod for the `MessageFormSchema`. By combining TypeScript and zod, we can implement more strict validation.
### Frontend: Setting up WebSocket
frontend/src/App.tsx
```typescript
const [messages, setMessages] = useState<Message[]>([]);
useEffect(() => {
const socket = new WebSocket('ws://localhost:3000/ws');
socket.onopen = (event) => {
console.log('WebSocket client opened', event);
};
socket.onmessage = (event) => {
try {
const data: DataToSend = JSON.parse(event.data.toString());
switch (data.action) {
case publishActions.UPDATE_CHAT:
setMessages((prev) => [...prev, data.message]);
break;
case publishActions.DELETE_CHAT:
setMessages((prev) =>
prev.filter((message) => message.id !== data.message.id)
);
break;
default:
console.error('Unknown data:', data);
}
} catch (_) {
console.log('Message from server:', event.data);
}
};
socket.onclose = (event) => {
console.log('WebSocket client closed', event);
};
return () => {
socket.close();
};
}, []);
```
I create a WebSocket client and connect it to the server. I define the behavior for when the WebSocket connection is opened, when a message is received, and when the connection is closed. In `socket.onmessage`, I use a switch statement to branch based on the action type received from the backend. This allows us to handle various use cases.
```typescript
// shared/constants.ts
export const publishActions = {
UPDATE_CHAT: 'UPDATE_CHAT',
DELETE_CHAT: 'DELETE_CHAT',
} as const;
// shared/types.ts
type PublishAction = (typeof publishActions)[keyof typeof publishActions];
export type Message = { id: number; date: string } & MessageFormValues;
export type DataToSend = {
action: PublishAction;
message: Message;
};
```
Here are the constants and type definitions used for WebSocket and message management. The `PublishAction type` infers the sum of the values of the `publishActions` object and extracts the enumeration type.
### Frontend: Sending Messages
frontend/src/App.tsx
```typescript
import { hc } from 'hono/client';
import type { AppType } from '@server/index';
const honoClient = hc<AppType>("http://localhost:3000");
const handleSubmit = async (e: FormEvent<HTMLFormElement>) => {
e.preventDefault();
try {
const validatedValues = MessageFormSchema.parse(formValues);
const response = await honoClient.messages.$post({
form: validatedValues,
});
if (!response.ok) {
throw new Error('Failed to send message');
}
} catch (error) {
// Error Handling Logic
}
};
```
In `handleSubmit`, I define the logic for sending a new message. When text is sent, it validates the input value and sends the new message as a POST request to the server.
What’s noteworthy is that I use the Hono client instead of the fetch API. I specify the `AppType` exported in the backend and the backend URL to `hc`, and define a type-safe `honoClient`. This enables the implementation of RPC. The gif below is a demo of TypeScript throwing a compile error when an incorrect data type value is passed to `$post`.
This allows us to implement a type-safe API by combining `zod` and RPC.
```typescript
<form
method="post"
onSubmit={handleSubmit}
className="flex items-center space-x-2"
>
<input name="userId" defaultValue={formValues.userId} hidden />
<input
name="text"
value={formValues.text}
onChange={handleInputChange}
className="flex-grow p-2 border border-gray-800 rounded-md bg-gray-800 text-white"
/>
<button
type="submit"
className="px-4 py-2 bg-blue-500 text-white rounded-md"
>
Send
</button>
</form>
```
The UI implementation is excerpted only for the message-sending form part. This configuration is simple, placing a message `input` tag and a message send button inside the `form` tag. When the send button is pressed, `handleSubmit` is triggered, and a request is sent to the backend.
That’s the introduction to the main implementation. Personally, I found that setting up WebSocket with Hono and Bun was not difficult, and I felt the difficulty level was equivalent to implementing WebSocket with Socket.io in Express. I was planning to write a post on WebSocket, but the implementation of a type-safe API using RPC with Hono also provided a very good development experience, so the post became long. I’m looking forward to future updates of Hono.
That is about it. Happy coding! | yutakusuno |
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1,882,465 | Mastering Technical SEO: Key Techniques for Improved Website Performance | Introduction Technical SEO is all about optimizing your website's technical aspects to improve its... | 0 | 2024-06-10T01:05:19 | https://dev.to/gohil1401/mastering-technical-seo-key-techniques-for-improved-website-performance-5b6j | webdev, beginners, tutorial, career | **Introduction**
Technical SEO is all about optimizing your website's technical aspects to improve its visibility and ranking in search engine results. It's like tuning up a car to ensure it runs smoothly and efficiently. Ready to learn how to make your website a lean, mean, SEO machine?
**1. Page Speed Optimization**
**Optimize Images** : Large, uncompressed images can slow down your site. Compress and properly size your images to improve load times. Tools like TinyPNG and JPEG Optimizer can help.
**Minify CSS, JavaScript, and HTML**: Reduce file sizes by removing unnecessary characters. This helps your site load faster, which is crucial for both user experience and SEO. Use tools like Minify Code or Gulp.
**Browser Caching**: Leverage browser caching to store resources on the user's device, reducing load times for repeat visits. This can be set up via your website's .htaccess file.
**2. Mobile Optimization**
**Responsive Design**: Ensure your website is mobile-friendly and provides a good user experience on all devices. A responsive design automatically adjusts the layout based on the device's screen size.
**Mobile-Friendly Test**: Use tools like Google’s Mobile-Friendly Test to check and improve mobile usability. This tool will provide suggestions on how to make your site more mobile-friendly.
**3. Secure Website (HTTPS)**
**SSL Certificate**: Implement HTTPS by obtaining an SSL certificate to secure data exchanges, which is also a ranking factor for search engines. Services like Let’s Encrypt offer free SSL certificates.
**4. Structured Data Markup**
**Schema Markup**: Use schema markup to help search engines understand your content and improve the way your page is displayed in search results with rich snippets. Schema.org provides a library of tags to get you started.
**5. Content Quality and Relevance**
**High-Quality Conten**t: Create valuable, informative, and engaging content that meets the needs of your audience. Remember, quality over quantity!
**Keyword Optimization**: Use relevant keywords naturally within your content, titles, and meta descriptions. Tools like Google Keyword Planner and SEMrush can help identify the best keywords.
## Understanding Dwell Time
Dwell time refers to the amount of time a user spends on a webpage after clicking a link on a search engine results page (SERP) but before returning to the SERP. It's a measure of how engaging or relevant the content is to the user's query.
**Indicates User Satisfaction:** Longer dwell time usually means the content is valuable and relevant.
**Influences SEO:** Search engines may use dwell time as a signal to rank pages.
## Understanding Bounce Rate
Bounce rate is the percentage of visitors who navigate away from a website after viewing only one page. It indicates that the visitor did not find what they were looking for or that the page failed to engage them.
**Calculation**
**Bounce Rate = (Single-page visits / Total visits) * 100**
**User Experience:** A high bounce rate often suggests that the landing page is not relevant or engaging to visitors.
**SEO Impact:** While not a direct ranking factor, a high bounce rate can indirectly affect SEO by indicating poor user experience.
## How to Start an SEO Project
1.**Understand the Business**: Get to know the business inside and out. Understand its goals, target audience, products, and services. This helps create an SEO plan that fits the business perfectly.
2.**Analyze Current Website Performance**: Check how the website is doing right now. Look at things like traffic, how fast pages load, and where the site ranks in search results. This shows what’s working and what needs fixing.
3.**Research Keywords**: Find the words and phrases people use when they search for products or services like those the business offers. Use both broad terms (like "shoes") and more specific ones (like "running shoes for women").
4.**Analyze Competitors**: Look at what competitors are doing online. See what keywords they use, how their content is structured, and where they get their backlinks. This helps find opportunities to do better.
5.**Maintain and Improve with Data**: Keep an eye on the site’s performance. Use data to track what’s working and what isn’t. Make adjustments as needed to maintain or improve search rankings and traffic.
**Final Thoughts**
Mastering Technical SEO can significantly improve your website's performance and visibility. By optimizing page speed, ensuring mobile-friendliness, implementing HTTPS, using structured data, and focusing on high-quality content, you'll be well on your way to SEO success. Remember, it's a continuous process – keep analyzing and improving to stay ahead of the competition. | gohil1401 |
1,882,464 | How to Build a Cloud Application | Hi and welcome to our step-by-step guide on building your first cloud web application with... | 0 | 2024-06-10T01:05:12 | https://five.co/blog/how-to-build-a-cloud-application/ | tutorial, learning, cloud, mysql | <!-- wp:paragraph -->
<p>Hi and welcome to our step-by-step guide on building your first cloud web application with Five.</p>
<!-- /wp:paragraph -->
<!-- wp:heading -->
<h2 class="wp-block-heading">Goals and Objectives: </h2>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p>In this step-by-step tutorial, we'll build a cloud application in just 30 minutes. We will:</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p><strong>Step 1: Develop a Responsive Cloud-Native Application</strong></p>
<!-- /wp:paragraph -->
<!-- wp:list -->
<ul><!-- wp:list-item -->
<li>Set up an online MySQL database.</li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li>Create tables with a many-to-many relationship.</li>
<!-- /wp:list-item --></ul>
<!-- /wp:list -->
<!-- wp:paragraph -->
<p><strong>Step 2: Create a Data Visualization Chart</strong></p>
<!-- /wp:paragraph -->
<!-- wp:list -->
<ul><!-- wp:list-item -->
<li>Write an SQL query to fetch data.</li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li>Use a chart wizard to visualize this data in the cloud.</li>
<!-- /wp:list-item --></ul>
<!-- /wp:list -->
<!-- wp:paragraph -->
<p><strong>Step 3: Validate Data Inputs</strong></p>
<!-- /wp:paragraph -->
<!-- wp:list -->
<ul><!-- wp:list-item -->
<li>Implement custom display types.</li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li>Use regular expressions to ensure data integrity.</li>
<!-- /wp:list-item --></ul>
<!-- /wp:list -->
<!-- wp:paragraph -->
<p><strong>Step 4: Integrate with Slack</strong> <strong>(Optional)</strong></p>
<!-- /wp:paragraph -->
<!-- wp:list -->
<ul><!-- wp:list-item -->
<li>Set up a Slack webhook.</li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li>Configure the app to send notifications to Slack.</li>
<!-- /wp:list-item --></ul>
<!-- /wp:list -->
<!-- wp:paragraph -->
<p><strong>Step 5: Add PDF Reporting (Optional)</strong></p>
<!-- /wp:paragraph -->
<!-- wp:list -->
<ul><!-- wp:list-item -->
<li>Create a report template.</li>
<!-- /wp:list-item -->
<!-- wp:list-item -->
<li>Include data from the SQL database in the PDF report for easy access</li>
<!-- /wp:list-item --></ul>
<!-- /wp:list -->
<!-- wp:paragraph -->
<p>Plus using Five you can also build so much more.</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>Sounds like a lot? <strong>You'll be surprised how quickly we can build a simple cloud application in Five! </strong>Before we continue, <a href="https://five.co/get-started/">make sure to sign up for free access to the Five development environment</a> to start building your cloud application today.</p>
<!-- /wp:paragraph -->
<!-- wp:tadv/classic-paragraph -->
<div style="background-color: #001524;"><hr style="height: 5px;">
<pre style="text-align: center; overflow: hidden; white-space: pre-line;"><span style="color: #f1ebda; background-color: #4588d8; font-size: calc(18px + 0.390625vw);"><strong>Get Free Access to Five<br></strong><span style="font-size: 14pt;">Rapidly Build & Deploy Cloud Web Applications</span></span></pre>
<p style="text-align: center;"><a href="https://five.co/get-started/" target="_blank" rel="noopener"><button style="background-color: #f8b92b; border: none; color: black; padding: 20px; text-align: center; text-decoration: none; display: inline-block; font-size: 18px; cursor: pointer; margin: 4px 2px; border-radius: 5px;"><strong>Get Instant Access</strong></button><br></a></p>
<hr style="height: 5px;"></div>
<!-- /wp:tadv/classic-paragraph -->
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Function","link":"javascript-function"},{"level":3,"content":"Theme","text":"Theme","link":"theme"},{"level":3,"content":"Report Template","text":"Report Template","link":"report-template"},{"level":2,"content":"Step-by-Step Guide: Building a Cloud Application from Scratch","text":"Step-by-Step Guide: Building a Cloud Application from Scratch","link":"step-by-step-guide-building-a-cloud-application-from-scratch"},{"level":3,"content":"Step 1: Creating a New Cloud Application","text":"Step 1: Creating a New Cloud Application","link":"step-1-creating-a-new-cloud-application"},{"level":3,"content":"Step 2: Running Your Cloud-Based Application","text":"Step 2: Running Your Cloud-Based Application","link":"step-2-running-your-cloud-based-application"},{"level":3,"content":"Step 3: Creating Database Tables with Table Wizard","text":"Step 3: Creating Database Tables with Table Wizard","link":"step-3-creating-database-tables-with-table-wizard"},{"level":4,"content":"Creating the Product Table","text":"Creating the Product Table","link":"creating-the-product-table"},{"level":4,"content":"Creating the Orders Table","text":"Creating the Orders Table","link":"creating-the-orders-table"},{"level":4,"content":"Creating the ProductOrders Table","text":"Creating the ProductOrders Table","link":"creating-the-productorders-table"},{"level":3,"content":"Step 4: Using the Database Modeler","text":"Step 4: Using the Database Modeler","link":"step-4-using-the-database-modeler"},{"level":3,"content":"Step 5: Importing Data from a CSV","text":"Step 5: Importing Data from a CSV","link":"step-5-importing-data-from-a-csv"},{"level":3,"content":"Step 6: Creating Forms with Form Wizard","text":"Step 6: Creating Forms with Form Wizard","link":"step-6-creating-forms-with-form-wizard"},{"level":4,"content":"Creating the Product and Orders Forms","text":"Creating the Product and Orders Forms","link":"creating-the-product-and-orders-forms"},{"level":4,"content":"Creating the ProductOrders Form","text":"Creating the ProductOrders Form","link":"creating-the-productorders-form"},{"level":3,"content":"Step 7: Enhancing Forms by Adding Pages","text":"Step 7: Enhancing Forms by Adding Pages","link":"step-7-enhancing-forms-by-adding-pages"},{"level":2,"content":"Second Checkpoint: Build Your Cloud Application","text":"Second Checkpoint: Build Your Cloud Application","link":"second-checkpoint-build-your-cloud-application"},{"level":3,"content":"Step 8: Validating Data on a Form","text":"Step 8: Validating Data on a Form","link":"step-8-validating-data-on-a-form"},{"level":3,"content":"Step 9: Using Five's End-User GUI","text":"Step 9: Using Five's End-User GUI","link":"step-9-using-fives-end-user-gui"},{"level":3,"content":"Step 10: Writing SQL Queries in Five","text":"Step 10: Writing SQL Queries in Five","link":"step-10-writing-sql-queries-in-five"},{"level":3,"content":"Step 11: Creating Charts For Your Cloud Application","text":"Step 11: Creating Charts For Your Cloud Application","link":"step-11-creating-charts-for-your-cloud-application"},{"level":3,"content":"Step 12: Visual \u003e Reports: Generating a PDF Report","text":"Step 12: Visual \u003e Reports: Generating a PDF Report","link":"step-12-visual-reports-generating-a-pdf-report"},{"level":1,"content":"Report","text":"Report","link":"report"},{"level":3,"content":"Step 13: Visual \u003e Menus: Adding Menu Items to Your App","text":"Step 13: Visual \u003e Menus: Adding Menu Items to Your App","link":"step-13-visual-menus-adding-menu-items-to-your-app"},{"level":2,"content":"Third Checkpoint: Ensuring Your App Functions Correctly","text":"Third Checkpoint: Ensuring Your App Functions Correctly","link":"third-checkpoint-ensuring-your-app-functions-correctly"},{"level":3,"content":"Step 14: Logic \u003e Code Editor: Creating a JavaScript Function","text":"Step 14: Logic \u003e Code Editor: Creating a JavaScript 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<hr class="wp-block-separator has-alpha-channel-opacity"/>
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<h2 class="wp-block-heading" id="resources-and-downloads">Resources and Downloads</h2>
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<!-- wp:heading {"level":3} -->
<h3 class="wp-block-heading" id="csv-file">CSV File</h3>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p>Download the CSV file here.</p>
<!-- /wp:paragraph -->
<!-- wp:file {"id":2411,"href":"https://five.co/wp-content/uploads/2024/02/product_data-1.csv"} -->
<div class="wp-block-file"><a id="wp-block-file--media-079b5d33-dcb9-48b8-8f41-1c0ca47bba8a" href="https://five.co/wp-content/uploads/2024/02/product_data-1.csv" target="_blank" rel="noreferrer noopener">product_data-1</a><a href="https://five.co/wp-content/uploads/2024/02/product_data-1.csv" class="wp-block-file__button wp-element-button" download aria-describedby="wp-block-file--media-079b5d33-dcb9-48b8-8f41-1c0ca47bba8a">Download</a></div>
<!-- /wp:file -->
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<h3 class="wp-block-heading" id="sql-query">SQL Query</h3>
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<!-- wp:paragraph -->
<p>Download the SQL query here. </p>
<!-- /wp:paragraph -->
<!-- wp:file {"id":2412,"href":"https://five.co/wp-content/uploads/2024/02/ProductQuery.txt"} -->
<div class="wp-block-file"><a id="wp-block-file--media-f984382b-09df-4622-81ad-72307942bb19" href="https://five.co/wp-content/uploads/2024/02/ProductQuery.txt" target="_blank" rel="noreferrer noopener">ProductQuery</a><a href="https://five.co/wp-content/uploads/2024/02/ProductQuery.txt" class="wp-block-file__button wp-element-button" download aria-describedby="wp-block-file--media-f984382b-09df-4622-81ad-72307942bb19">Download</a></div>
<!-- /wp:file -->
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<h3 class="wp-block-heading" id="java-script-function">JavaScript Function</h3>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p>Download the JavaScript function here.</p>
<!-- /wp:paragraph -->
<!-- wp:file {"id":2651,"href":"https://five.co/wp-content/uploads/2024/03/Slack.txt"} -->
<div class="wp-block-file"><a id="wp-block-file--media-f3a116a7-4b94-4c84-a981-813b030fc81c" href="https://five.co/wp-content/uploads/2024/03/Slack.txt" target="_blank" rel="noreferrer noopener">Slack</a><a href="https://five.co/wp-content/uploads/2024/03/Slack.txt" class="wp-block-file__button wp-element-button" download aria-describedby="wp-block-file--media-f3a116a7-4b94-4c84-a981-813b030fc81c">Download</a></div>
<!-- /wp:file -->
<!-- wp:heading {"level":3} -->
<h3 class="wp-block-heading" id="theme">Theme</h3>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p>Download the CSS theme here.</p>
<!-- /wp:paragraph -->
<!-- wp:file {"id":2430,"href":"https://five.co/wp-content/uploads/2024/02/PurpleHazeTheme.txt"} -->
<div class="wp-block-file"><a id="wp-block-file--media-d9efd2eb-45b1-45f3-9758-f2c68e3a7ee9" href="https://five.co/wp-content/uploads/2024/02/PurpleHazeTheme.txt">PurpleHazeTheme</a><a href="https://five.co/wp-content/uploads/2024/02/PurpleHazeTheme.txt" class="wp-block-file__button wp-element-button" download aria-describedby="wp-block-file--media-d9efd2eb-45b1-45f3-9758-f2c68e3a7ee9">Download</a></div>
<!-- /wp:file -->
<!-- wp:group {"layout":{"type":"constrained"}} -->
<div class="wp-block-group"><!-- wp:heading {"level":3} -->
<h3 class="wp-block-heading" id="report-template">Report Template</h3>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p>Download the report template or copy the HTML from here.</p>
<!-- /wp:paragraph --></div>
<!-- /wp:group -->
<!-- wp:group {"layout":{"type":"constrained"}} -->
<div class="wp-block-group"><!-- wp:file {"id":2414,"href":"https://five.co/wp-content/uploads/2024/02/ProductReport.docx"} -->
<div class="wp-block-file"><a id="wp-block-file--media-a1eac728-16c7-40db-99ed-608c628b1f11" href="https://five.co/wp-content/uploads/2024/02/ProductReport.docx" target="_blank" rel="noreferrer noopener">ProductReport</a><a href="https://five.co/wp-content/uploads/2024/02/ProductReport.docx" class="wp-block-file__button wp-element-button" download aria-describedby="wp-block-file--media-a1eac728-16c7-40db-99ed-608c628b1f11">Download</a></div>
</div>
<!-- /wp:group -->
<!-- wp:separator -->
<hr class="wp-block-separator has-alpha-channel-opacity"/>
<!-- /wp:separator -->
<!-- wp:heading -->
<h2 class="wp-block-heading"><strong>Step-by-Step Guide: Building a Cloud Application from Scratch</strong></h2>
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<h3 class="wp-block-heading">Step 1: Creating a New Cloud Application</h3>
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<p><strong>1.1.</strong> To create a new application in Five, navigate to the "Applications" section.</p>
<!-- /wp:paragraph -->
<!-- wp:image {"align":"center","id":3013,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-7-1024x694-1.png" alt="Creating a New Cloud Application" class="wp-image-3013"/><figcaption class="wp-element-caption"><em>Image 1.1: Creating a New Cloud Application</em></figcaption></figure>
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<p><strong>1.2.</strong> Click on the yellow Plus icon to start a new application.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/Five.Co-Yellow-Plus-Button-Create-a-New-Application-1024x649-1.png" alt="Build a New Cloud Application in Five" class="wp-image-3014"/><figcaption class="wp-element-caption"><em>Image 1.2: Build a New Cloud Application in Five</em></figcaption></figure>
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<p><strong>1.3.</strong> Enter "My First App" in the Title field.<br><strong>1.4.</strong> Save your application by clicking the Tick ✔️ icon.</p>
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<!-- wp:image {"align":"center","id":3015,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-12-1024x619-1.png" alt="" class="wp-image-3015"/><figcaption class="wp-element-caption"><em>Image 1.3: Saving a New Application</em></figcaption></figure>
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<hr class="wp-block-separator has-alpha-channel-opacity"/>
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<h3 class="wp-block-heading">Step 2: Running Your Cloud-Based Application</h3>
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<p>You can run and preview your cloud application at any time. Click on the "Deploy to Development" button in the top navigation bar. The initial deployment may take a while as Five sets up a cloud-hosted instance for your app.</p>
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<!-- wp:image {"align":"center","id":3016,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-4-1024x259-1.png" alt="Deploy your application to development" class="wp-image-3016"/><figcaption class="wp-element-caption"><em>Image 2.1.: Deploying your application to development</em></figcaption></figure>
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<p>After deployment, the "Deploy to Development" button will change to a "Run ▶️" button. Click "Run ▶️" to open a new window showing the current state of your application.</p>
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<!-- wp:image {"align":"center","id":3017,"sizeSlug":"large","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-large"><img src="https://five.co/wp-content/uploads/2024/06/Five.Co-Run-Your-Application-1-1024x576.png" alt="Running Your Application" class="wp-image-3017"/><figcaption class="wp-element-caption"><em>Image 2.2: Running Your Application</em></figcaption></figure>
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<hr class="wp-block-separator has-alpha-channel-opacity"/>
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<h3 class="wp-block-heading">Step 3: Creating Database Tables with Table Wizard</h3>
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<p>Let's start building our cloud application. Return to the development environment to continue.</p>
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<p><strong>3.1.</strong> Click on the blue "Manage" button.</p>
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<!-- wp:image {"align":"center","id":3018,"sizeSlug":"large","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-large"><img src="https://five.co/wp-content/uploads/2024/06/Five.Co-Manage-Your-Application-1024x576.png" alt="Accessing Five's development environment" class="wp-image-3018"/><figcaption class="wp-element-caption"><em>Image 3.1: Accessing Five's development environment</em></figcaption></figure>
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<p><strong>3.2.</strong> To add tables to Five's integrated MySQL database, go to "Data" > "Table Wizard."</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-9-1024x518-1.png" alt="Accessing Five's Table Wizard" class="wp-image-3019"/><figcaption class="wp-element-caption"><em>Image 3.2: Accessing Five's Table Wizard</em></figcaption></figure>
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<p>We will create three tables: Products, Orders, and ProductOrders.</p>
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<h4 class="wp-block-heading">Creating the Product Table</h4>
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<p><strong>3.3.</strong> Name your table "Product" in the Name field. Add fields by clicking the Plus ➕ icon.</p>
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<p><strong>3.4.</strong> Ensure your Product table fields match this structure:</p>
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<!-- wp:table -->
<figure class="wp-block-table"><table><thead><tr><th>Name</th><th>Data Type</th><th>Required</th><th>Size</th><th>Default Display Type</th></tr></thead><tbody><tr><td>Name</td><td>Text</td><td>✔️</td><td>100</td><td>_Text</td></tr><tr><td>SKU</td><td>Text</td><td></td><td>100</td><td>_Text</td></tr><tr><td>Price</td><td>Float</td><td></td><td></td><td>_Currency</td></tr><tr><td>Rating</td><td>Float</td><td></td><td></td><td>_RatingFloat</td></tr></tbody></table></figure>
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<p>Save the table by clicking the Tick ✔️ icon and confirm in the Table Upgrade dialog.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-50-1024x551-1.png" alt="Creating the Product Table" class="wp-image-3020"/><figcaption class="wp-element-caption"><em>Image 3.3: Creating the Product Table</em></figcaption></figure>
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<h4 class="wp-block-heading">Creating the Orders Table</h4>
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<p><strong>3.5.</strong> Repeat steps 3.3 and 3.4 for the Orders table. Ensure it looks like this:</p>
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<figure class="wp-block-table"><table><thead><tr><th>Name</th><th>Data Type</th><th>Required</th><th>Size</th><th>Default Display Type</th></tr></thead><tbody><tr><td>OrderStatus</td><td>Text</td><td>✔️</td><td>100</td><td>_Text</td></tr><tr><td>OrderDate</td><td>Date</td><td></td><td>100</td><td>_Date</td></tr></tbody></table></figure>
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<p>Save by clicking the Tick ✔️ icon.</p>
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<!-- wp:image {"align":"center","id":3021,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-51-1024x550-1.png" alt="" class="wp-image-3021"/><figcaption class="wp-element-caption"><em>Image 3.4: Creating the Orders Table</em></figcaption></figure>
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<h4 class="wp-block-heading">Creating the ProductOrders Table</h4>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p>The ProductOrders table links Products and Orders in a many-to-many relationship and contains only the Foreign Keys of these tables.</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p><strong>3.7.</strong> Open the Table Wizard and name the table "ProductOrders."</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p><strong>3.8.</strong> Click the Right Arrow > to proceed.</p>
<!-- /wp:paragraph -->
<!-- wp:image {"align":"center","id":3022,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-13-1024x627-1.png" alt="" class="wp-image-3022"/><figcaption class="wp-element-caption"><em>Image 3.5: The ProductOrders Table</em></figcaption></figure>
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<p><strong>3.10.</strong> Add relationships by clicking the Plus ➕ icon in the Relationships area, linking to both Product and Orders tables. Tick the Required box for both.</p>
<!-- /wp:paragraph -->
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<p><strong>3.12.</strong> Save the relationships and the table by clicking the Tick ✔️ icon.</p>
<!-- /wp:paragraph -->
<!-- wp:image {"align":"center","id":3023,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-14-1024x651-1.png" alt="" class="wp-image-3023"/><figcaption class="wp-element-caption"><em>Image 3.6: Adding Relationships to the ProductOrders Table</em></figcaption></figure>
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<hr class="wp-block-separator has-alpha-channel-opacity"/>
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<!-- wp:heading {"level":3} -->
<h3 class="wp-block-heading">Step 4: Using the Database Modeler</h3>
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<!-- wp:paragraph -->
<p><strong>4.1.</strong> Verify your database setup by navigating to "Data" > "Database Modeler."</p>
<!-- /wp:paragraph -->
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<p><strong>4.2.</strong> Arrange your tables to form a visual Entity-Relationship Diagram (ERD). Ensure relationships are correct, with "crows' feet" pointing to the ProductOrders table.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-15-1024x649-1.png" alt="" class="wp-image-3024"/><figcaption class="wp-element-caption"><em>Image 4.1: Database Modeler with ERD</em></figcaption></figure>
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<h3 class="wp-block-heading">Step 5: Importing Data from a CSV</h3>
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<p><strong>5.1.</strong> To import a CSV file into your database table, go to "Data" > "Tables."</p>
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<p><strong>5.2.</strong> Click on the "Import CSV into Table 📥" button.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/Five.Co-Data-Import-1024x650-1-1.png" alt="" class="wp-image-3025"/><figcaption class="wp-element-caption"><em>Image 5.1: Importing CSV into a Table</em></figcaption></figure>
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<p><strong>5.3.</strong> Select the Product table from the dropdown.</p>
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<p><strong>5.4.</strong> Choose the CSV file to import. Set ProductKey to "Generated."</p>
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<p><strong>5.5.</strong> Five will map your database fields to the CSV columns. Confirm by clicking the Tick ✔️ icon.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-36-1024x627-1.png" alt="" class="wp-image-3026"/><figcaption class="wp-element-caption"><em>Image 5.2: Mapping CSV Columns to Database Fields</em></figcaption></figure>
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<hr class="wp-block-separator has-alpha-channel-opacity"/>
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<h3 class="wp-block-heading">Step 6: Creating Forms with Form Wizard</h3>
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<p><strong>6.1.</strong> To create forms, go to "Visual" > "Form Wizard."</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/Five.Co-Form-Wizard-1024x650-2.png" alt="" class="wp-image-3027"/><figcaption class="wp-element-caption"><em>Image 6.1: Accessing the Form Wizard</em></figcaption></figure>
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<h4 class="wp-block-heading">Creating the Product and Orders Forms</h4>
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<p><strong>6.2.</strong> Select "Product" as the Main Data Source in the Form Wizard and save.</p>
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<p><strong>6.4.</strong> Repeat the process for the Orders table.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-16-1024x628-1.png" alt="" class="wp-image-3028"/><figcaption class="wp-element-caption"><em>Image 6.2: Creating the Product Form</em></figcaption></figure>
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<h4 class="wp-block-heading">Creating the ProductOrders Form</h4>
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<p><strong>6.5.</strong> Select "ProductOrders" as the Main Data Source in the Form Wizard.</p>
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<p><strong>6.6.</strong> Toggle off "Add Menu Item."</p>
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<p><strong>6.7.</strong> Click the Right Arrow > to proceed.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-17-1024x627-1.png" alt="" class="wp-image-3029"/><figcaption class="wp-element-caption"><em>Image 6.3: Defining the ProductOrders Form</em></figcaption></figure>
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<p><strong>6.8.</strong> Tick the "List" box for both fields: ProductKey and OrdersKey, then save.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-18-1024x627-1.png" alt="" class="wp-image-3030"/><figcaption class="wp-element-caption"><em>Image 6.4: Settings for the ProductOrders Form</em></figcaption></figure>
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<h3 class="wp-block-heading">Step 7: Enhancing Forms by Adding Pages</h3>
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<p><strong>7.1.</strong> Go to "Visual" > "Forms."</p>
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<p><strong>7.2.</strong> Select the Orders form.</p>
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<p><strong>7.3.</strong> Click on "Pages" and then the Plus ➕ icon.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-20-1024x622-1.png" alt="" class="wp-image-3031"/><figcaption class="wp-element-caption"><em>Image 7.1: Adding a Page to the Orders Form</em></figcaption></figure>
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<p><strong>7.5.</strong> Set the Page Type to "List," caption it as "Products," and select "ProductOrders (Form)" as the Action.</p>
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<p><strong>7.7.</strong> Save the new page by clicking the Tick ✔️ icon.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-22-1024x621-1.png" alt="" class="wp-image-3032"/><figcaption class="wp-element-caption"><em>Image 7.2: Page Type and Field Settings</em></figcaption></figure>
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<h2 class="wp-block-heading" id="second-checkpoint-run-your-application">Second Checkpoint: Build Your Cloud Application</h2>
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<p>It's time to run your application to see what we have developed so far. As shown in Step 2 above, you can always preview your application by clicking on the <strong>Run ▶️ </strong>icon in the top right corner.</p>
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<p>Here's what your app should look like:</p>
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<figure class="wp-block-image size-large"><img src="https://five.co/wp-content/uploads/2024/02/image-54-1024x651.png" alt="" class="wp-image-2442"/></figure>
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<hr class="wp-block-separator has-alpha-channel-opacity"/>
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<h3 class="wp-block-heading">Step 8: Validating Data on a Form</h3>
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<p>8.1. Go to <strong>Setup > Display Types.</strong><br>8.2. Click on the yellow <strong>Plus ➕ </strong>button to create a new display type.<br>8.3. Fill in the following fields:<br>- For <strong>Name, </strong>type in <strong>SKU</strong>.<br>- For <strong>Display Type, </strong>select <strong>Text</strong>.<br>- Now go down to the bottom of the display type form, and toggle <strong>Regular Expression</strong>.<br>- For <strong>Mask,</strong> type or paste this regular expression: <code>^[A-Z]{3}-\d+$</code><br>- Last, for <strong>Error Message, </strong>type in the error message that users will see if they fill in an invalid SKU, such as "Please enter a valid SKU."<br>8.4. Click on the <strong>Tick ✔️ </strong>icon to save your display type.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-8-1024x525-1.png" alt="" class="wp-image-3033"/><figcaption class="wp-element-caption"><em>Image 8.1: Creating a New Display Type</em></figcaption></figure>
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<p><strong>8.5.</strong> Apply this display type to the SKU field in the Products form under "Visual" > "Forms" > "Pages" > "General" > "Fields."</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-9-1024x525-1.png" alt="" class="wp-image-3034"/><figcaption class="wp-element-caption"><em>Image 8.2: Applying the Display Type to a Field</em></figcaption></figure>
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<p><strong>8.8.</strong> Change the Display Type of the SKU field to SKU and save.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-10-1024x521-1.png" alt="" class="wp-image-3035"/><figcaption class="wp-element-caption"><em>Image 8.3: SKU Field with Display Type Applied</em></figcaption></figure>
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<hr class="wp-block-separator has-alpha-channel-opacity"/>
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<h3 class="wp-block-heading">Step 9: Using Five's End-User GUI</h3>
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<p><strong>9.1.</strong> In the end-user application, add some dummy data to the Orders table.</p>
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<p><strong>9.2.</strong> Add products to your orders via the Plus ➕ icon in the Products page.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-56-1024x650-1.png" alt="" class="wp-image-3047"/><figcaption class="wp-element-caption"><em>Image 9.1: Adding Dummy Data in End-User GUI</em></figcaption></figure>
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<p>9.5 Repeat these steps until you have several orders stored in your database. As shown in Image 8.1, your orders will appear in a list. In Image 9.1, this list contains a <strong>New, Pending, Pending </strong>and <strong>Shipped </strong>order.</p>
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<hr class="wp-block-separator has-alpha-channel-opacity"/>
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<h3 class="wp-block-heading">Step 10: Writing SQL Queries in Five</h3>
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<p>Now let's create a SQL query in Five, so let's go back into our development environment. We will write a query that returns some of the data you created previously.</p>
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<p><strong>10.1.</strong> Go to "Data" > "Queries."</p>
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<p><strong>10.2.</strong> Add a new query by clicking the yellow plus and name it "ProductQuery."</p>
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<p><strong>10.4.</strong> Click on "Click to add" to open the Query Editor.</p>
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<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-37-1024x649-1.png" alt="" class="wp-image-3048"/><figcaption class="wp-element-caption"><em>Image 10.1: Accessing the Query Editor</em></figcaption></figure>
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<p><strong>10.5</strong>. Click on <strong>SQL</strong>.<br><strong>10.6</strong>. Paste the SQL into the SQL Editor. Make sure to have some orders in your Orders table. Otherwise, the query will not produce any results! To test your query, click on the <strong>Run </strong>▶️ icon.</p>
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<!-- wp:kevinbatdorf/code-block-pro {"code":"SELECT\n `Product`.`Name`,\n `Product`.`Price`,\n `Orders`.`OrderDate`\nFROM\n `Product`\n INNER JOIN `ProductOrders` ON (\n `ProductOrders`.`ProductKey` = `Product`.`ProductKey`\n )\n INNER JOIN `Orders` ON (\n `ProductOrders`.`OrdersKey` = `Orders`.`OrdersKey`\n )","codeHTML":"\u003cpre class=\u0022shiki one-dark-pro\u0022 style=\u0022background-color: #282c34\u0022 tabindex=\u00220\u0022\u003e\u003ccode\u003e\u003cspan class=\u0022line\u0022\u003e\u003cspan style=\u0022color: #C678DD\u0022\u003eSELECT\u003c/span\u003e\u003c/span\u003e\n\u003cspan class=\u0022line\u0022\u003e\u003cspan style=\u0022color: #ABB2BF\u0022\u003e \u003c/span\u003e\u003cspan style=\u0022color: #98C379\u0022\u003e`Product`\u003c/span\u003e\u003cspan style=\u0022color: #ABB2BF\u0022\u003e.\u003c/span\u003e\u003cspan style=\u0022color: #98C379\u0022\u003e`Name`\u003c/span\u003e\u003cspan style=\u0022color: 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<div class="wp-block-kevinbatdorf-code-block-pro" data-code-block-pro-font-family="Code-Pro-JetBrains-Mono" style="font-size:.875rem;font-family:Code-Pro-JetBrains-Mono,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,monospace;line-height:1.25rem;--cbp-tab-width:2;tab-size:var(--cbp-tab-width, 2)"><span style="display:block;padding:16px 0 0 16px;margin-bottom:-1px;width:100%;text-align:left;background-color:#282c34"><svg xmlns="http://www.w3.org/2000/svg" width="54" height="14" viewBox="0 0 54 14"><g fill="none" fill-rule="evenodd" transform="translate(1 1)"><circle cx="6" cy="6" r="6" fill="#FF5F56" stroke="#E0443E" stroke-width=".5"></circle><circle cx="26" cy="6" r="6" fill="#FFBD2E" stroke="#DEA123" stroke-width=".5"></circle><circle cx="46" cy="6" r="6" fill="#27C93F" stroke="#1AAB29" stroke-width=".5"></circle></g></svg></span><span role="button" tabindex="0" data-code="SELECT
`Product`.`Name`,
`Product`.`Price`,
`Orders`.`OrderDate`
FROM
`Product`
INNER JOIN `ProductOrders` ON (
`ProductOrders`.`ProductKey` = `Product`.`ProductKey`
)
INNER JOIN `Orders` ON (
`ProductOrders`.`OrdersKey` = `Orders`.`OrdersKey`
)" style="color:#abb2bf;display:none" aria-label="Copy" class="code-block-pro-copy-button"><svg xmlns="http://www.w3.org/2000/svg" style="width:24px;height:24px" fill="none" viewBox="0 0 24 24" stroke="currentColor" stroke-width="2"><path class="with-check" stroke-linecap="round" stroke-linejoin="round" d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2m-6 9l2 2 4-4"></path><path class="without-check" stroke-linecap="round" stroke-linejoin="round" d="M9 5H7a2 2 0 00-2 2v12a2 2 0 002 2h10a2 2 0 002-2V7a2 2 0 00-2-2h-2M9 5a2 2 0 002 2h2a2 2 0 002-2M9 5a2 2 0 012-2h2a2 2 0 012 2"></path></svg></span><pre class="shiki one-dark-pro" style="background-color: #282c34" tabindex="0"><code><span class="line"><span style="color: #C678DD">SELECT</span></span>
<span class="line"><span style="color: #ABB2BF"> </span><span style="color: #98C379">`Product`</span><span style="color: #ABB2BF">.</span><span style="color: #98C379">`Name`</span><span style="color: #ABB2BF">,</span></span>
<span class="line"><span style="color: #ABB2BF"> </span><span style="color: #98C379">`Product`</span><span style="color: #ABB2BF">.</span><span style="color: #98C379">`Price`</span><span style="color: #ABB2BF">,</span></span>
<span class="line"><span style="color: #ABB2BF"> </span><span style="color: #98C379">`Orders`</span><span style="color: #ABB2BF">.</span><span style="color: #98C379">`OrderDate`</span></span>
<span class="line"><span style="color: #C678DD">FROM</span></span>
<span class="line"><span style="color: #ABB2BF"> </span><span style="color: #98C379">`Product`</span></span>
<span class="line"><span style="color: #ABB2BF"> </span><span style="color: #C678DD">INNER JOIN</span><span style="color: #ABB2BF"> </span><span style="color: #98C379">`ProductOrders`</span><span style="color: #ABB2BF"> </span><span style="color: #C678DD">ON</span><span style="color: #ABB2BF"> (</span></span>
<span class="line"><span style="color: #ABB2BF"> </span><span style="color: #98C379">`ProductOrders`</span><span style="color: #ABB2BF">.</span><span style="color: #98C379">`ProductKey`</span><span style="color: #ABB2BF"> </span><span style="color: #56B6C2">=</span><span style="color: #ABB2BF"> </span><span style="color: #98C379">`Product`</span><span style="color: #ABB2BF">.</span><span style="color: #98C379">`ProductKey`</span></span>
<span class="line"><span style="color: #ABB2BF"> )</span></span>
<span class="line"><span style="color: #ABB2BF"> </span><span style="color: #C678DD">INNER JOIN</span><span style="color: #ABB2BF"> </span><span style="color: #98C379">`Orders`</span><span style="color: #ABB2BF"> </span><span style="color: #C678DD">ON</span><span style="color: #ABB2BF"> (</span></span>
<span class="line"><span style="color: #ABB2BF"> </span><span style="color: #98C379">`ProductOrders`</span><span style="color: #ABB2BF">.</span><span style="color: #98C379">`OrdersKey`</span><span style="color: #ABB2BF"> </span><span style="color: #56B6C2">=</span><span style="color: #ABB2BF"> </span><span style="color: #98C379">`Orders`</span><span style="color: #ABB2BF">.</span><span style="color: #98C379">`OrdersKey`</span></span>
<span class="line"><span style="color: #ABB2BF"> )</span></span></code></pre></div>
<!-- /wp:kevinbatdorf/code-block-pro -->
<!-- wp:paragraph -->
<p><strong>10.7.</strong> Save your query by clicking the Tick ✔️ icon.</p>
<!-- /wp:paragraph -->
<!-- wp:image {"align":"center","id":3049,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-38-1024x650-1.png" alt="" class="wp-image-3049"/><figcaption class="wp-element-caption"><em>Image 10.2: SQL Query Editor</em></figcaption></figure>
<!-- /wp:image -->
<!-- wp:separator -->
<hr class="wp-block-separator has-alpha-channel-opacity"/>
<!-- /wp:separator -->
<!-- wp:heading {"level":3} -->
<h3 class="wp-block-heading">Step 11: Creating Charts For Your Cloud Application</h3>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p><strong>11.1.</strong> Navigate to "Visual" > "Chart Wizard."</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p><strong>11.2.</strong> Fill in the required fields (marked with an asterisk *) and select your X Value Column and Y Value Column.</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p><strong>11.3.</strong> Save the chart settings by clicking tick in the top right</p>
<!-- /wp:paragraph -->
<!-- wp:image {"align":"center","id":3050,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-23-1024x649-1.png" alt="" class="wp-image-3050"/><figcaption class="wp-element-caption"><em>Image 11.1: Creating a Bar Chart</em></figcaption></figure>
<!-- /wp:image -->
<!-- wp:separator -->
<hr class="wp-block-separator has-alpha-channel-opacity"/>
<!-- /wp:separator -->
<!-- wp:heading {"level":3} -->
<h3 class="wp-block-heading">Step 12: Visual > Reports: Generating a PDF Report</h3>
<!-- /wp:heading -->
<!-- wp:paragraph -->
<p>12.1. Begin by navigating to Visual > Reports to create a PDF report from your database.</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>12.2. Click the yellow Plus icon to start a new report.</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>12.3. Enter "Product Report" into the Title field.</p>
<!-- /wp:paragraph -->
<!-- wp:paragraph -->
<p>12.4. Select the Data Sources option.</p>
<!-- /wp:paragraph -->
<!-- wp:image {"align":"center","id":3051,"sizeSlug":"full","linkDestination":"none"} -->
<figure class="wp-block-image aligncenter size-full"><img src="https://five.co/wp-content/uploads/2024/06/image-24-1024x652-1-1.png" alt="" class="wp-image-3051"/><figcaption class="wp-element-caption"><em>Image 12.1: A report requires a title and data source before it can be created.</em></figcaption></figure>
<!-- /wp:image -->
<!-- wp:paragraph -->
<p>12.5. Click the Plus ➕ icon to add a new data source.</p>
<!-- /wp:paragraph -->
**To continue the rest of this tutorial navigate to ["How to Build a Cloud Application"](https://five.co/blog/how-to-build-a-cloud-application/)
** | domfive |
1,882,463 | Lập trình web phải phân biệt được Session và Cookie | 1. Giới thiệu về Session và Cookie Trong thế giới web hiện đại, việc quản lý thông tin... | 0 | 2024-06-10T00:59:02 | https://dev.to/duongphan/lap-trinh-web-phai-phan-biet-duoc-session-va-cookie-2mi0 | session, cookie, security, webdev | ## 1. Giới thiệu về Session và Cookie
Trong thế giới web hiện đại, việc quản lý thông tin người dùng giữa các lần truy cập là một yếu tố quan trọng để tạo ra trải nghiệm người dùng mượt mà và cá nhân hóa. Hai công cụ chính để thực hiện điều này là session (phiên làm việc) và cookie (bánh quy). Trong bài viết này, chúng ta sẽ tìm hiểu chi tiết về session và cookie, cách chúng hoạt động, và cách sử dụng chúng trong lập trình web.
### Session là gì?
Session là một phiên làm việc tạm thời của người dùng trên website, thường bắt đầu khi người dùng truy cập vào trang web và kết thúc khi họ rời khỏi hoặc sau một khoảng thời gian không hoạt động. Dữ liệu session thường được lưu trữ trên server và gắn liền với một session ID duy nhất.
### Cookie là gì?
Cookie là những đoạn dữ liệu nhỏ được lưu trữ trên máy tính của người dùng bởi trình duyệt web. Cookie có thể chứa thông tin về các trang web mà người dùng đã truy cập, các tùy chọn cá nhân, hoặc thông tin xác thực.
### Sự khác biệt giữa Session và Cookie
- Vị trí lưu trữ: Session lưu trữ dữ liệu trên server, còn Cookie lưu trữ trên máy người dùng.
- Bảo mật: Session bảo mật hơn vì dữ liệu không lưu trữ trên máy người dùng, trong khi cookie dễ bị tấn công và giả mạo nếu không được mã hóa.
- Dung lượng: Cookie có giới hạn dung lượng (thường là 4KB), còn session có thể lưu trữ dữ liệu lớn hơn vì nó được lưu trên server.
- Thời gian sống: Session thường hết hạn sau một khoảng thời gian không hoạt động, còn cookie có thể được thiết lập để tồn tại trong một thời gian dài hoặc đến khi người dùng xóa chúng.
## Cách sử dụng Cookie
### Tạo và đọc Cookie
**1. Tạo Cookie:** Bạn có thể tạo cookie bằng cách sử dụng document.cookie. Để tạo một cookie, bạn cần thiết lập tên, giá trị và các tùy chọn như thời gian hết hạn, đường dẫn (path), miền (domain), và bảo mật (secure). 
**2. Đọc Cookie:** Để đọc cookie, bạn cũng sử dụng document.cookie, nhưng cần xử lý chuỗi kết quả để tách các cookie thành các phần tử riêng lẻ. 
**3. Xóa Cookie:** Để xóa một cookie, bạn chỉ cần thiết lập thời gian hết hạn của nó về quá khứ. 
## Cách sử dụng Session
Session thường được quản lý bởi server và không thể trực tiếp tạo hoặc thao tác bằng JavaScript. Tuy nhiên, bạn có thể sử dụng các API như localStorage và sessionStorage để lưu trữ dữ liệu phiên làm việc phía client.
## Sử dụng sessionStorage
**sessionStorage** lưu trữ dữ liệu trong một phiên duy nhất. Dữ liệu sẽ bị xóa khi tab hoặc trình duyệt đóng.
**1. Lưu trữ dữ liệu:** 
**2. Đọc dữ liệu:** 
**3. Xóa dữ liệu:** 
## Khi nào nên sử dụng Session và Cookie
- Cookie: Sử dụng khi bạn cần lưu trữ thông tin trong một khoảng thời gian dài, chia sẻ dữ liệu giữa các trang, hoặc cần gửi dữ liệu đến server mỗi lần gửi yêu cầu HTTP.
- sessionStorage: Sử dụng khi bạn cần lưu trữ dữ liệu chỉ trong phiên làm việc hiện tại và không cần dữ liệu này sau khi người dùng đóng tab hoặc trình duyệt.
- localStorage: Sử dụng khi bạn cần lưu trữ dữ liệu lâu dài trên client mà không phụ thuộc vào phiên làm việc.
## Kết luận
Việc sử dụng session và cookie đúng cách trong JavaScript sẽ giúp bạn quản lý thông tin người dùng hiệu quả, cải thiện trải nghiệm người dùng và tăng cường tính cá nhân hóa của website. Hiểu rõ cách hoạt động và khi nào nên sử dụng từng công cụ này sẽ giúp bạn xây dựng các ứng dụng web mạnh mẽ và bảo mật hơn.
| duongphan |
1,882,462 | Reading Laravel | Hi there. I've been working with Laravel for about 6 years now, but never read the framework code... | 0 | 2024-06-10T00:58:40 | https://dev.to/bruno_beghelli_210b82ca3b/reading-laravel-2j7p | Hi there. I've been working with Laravel for about 6 years now, but never read the framework code (which is expected, I think :P). Got curious about how it's written and started doing that for a few days now and it is both a fun and educational process . It requires some basic programming knowledge, but it feels really good to understand exactly how things work. I'm documenting that on youtube ([link to the first episode here](https://www.youtube.com/watch?v=YZLiH5tHqdw&t=4s)), would love to share ideas with others that might find this interesting. | bruno_beghelli_210b82ca3b | |
1,881,473 | Budgtr Downtime incident report. | We would like to apologize to all our users for the downtime experienced last week. We understand the... | 0 | 2024-06-09T21:50:36 | https://dev.to/thobeats/budgtr-downtime-incident-report-2lph | We would like to apologize to all our users for the downtime experienced last week. We understand the discomfort this would have caused, and we have done the necessary checks and fixes to ensure that this does not happen again.
We have provided an incident report of the downtime that occurred on the 5th of June, 2024. Also outlined is our response to the issue.
###Issue Summary
The issue started from 6:03 AM to 8:52 AM WAT, requests to the website resulted in a 500 error as users couldn't access the service for this period. The cause of this outage was an untested change that was pushed into production, which resulted in a bug.
### Timeline (All West African Time)
* 6:03 AM - New Change was pushed.
* 6:55 AM - The first Outage occurrence was logged in.
* 6:56 AM - Our monitoring system alerted us.
* 7:20 AM - failed change was rolled back.
* 7:30 AM - Successful change rolled back
* 8:00 AM - New change was tested and pushed into production.
* 8:30 AM - Server was restarted.
* 8:52 AM - System was restored at 100% functionality.
###Root Cause
At 6:03 AM a new feature that was discussed and approved for development within the team was pushed to production without being tested. The new feature is a payment infrastructure that Budgetr would be using, but the APIs to be consumed were not consumed properly which resulted in breaking the whole code base which then caused the 500 error.
###Resoluion and Recovery
At 6:56 AM our monitoring system alerted our engineers of the error, which escalated immediately. At 7:20 AM our engineers tried to roll back the change to fix it locally, but it failed due to some authorization constraints.
At 7:30 AM the proper authorization access was granted and our engineers were able to successfully roll back the changes. Our engineers went to work straight and fixed the error, after pushing it to the test environment, the test process took place and the results came out as positive.
At 8:00 AM our engineers pushed to production. To ensure a smooth sail of service, we restarted the servers at 8:30 AM and our service was confirmed to be 100% stable at 8:52 AM.
### Corrective and Preventative Measures
In the last 4 days, we have conducted an internal review and analysis of the outage. The following are the actions that will be taken to ensure this issue doesn't occur again:
1. All new features would be pushed to the test environment by default.
2. Only authorized personnel can push tested and approved changes to production.
3. Detailed information concerning the features or changes being pushed to test should be provided in the commit messages.
Budgetr is committed to ensuring a seamless service for all our customers and as a result we constantly improve our technology and operational processes to prevent these issues. We sincerely apologize for the discomfort this issue would have caused you or your businesses and we appreciate your patience and understanding.
Sincerely,
The Budgetr Team. | thobeats | |
1,882,451 | Effective Methods to Secure Your Online Store Against Cyber Threats | In the digital age, the security of online stores is paramount. With cyber threats evolving and... | 0 | 2024-06-10T00:36:18 | https://dev.to/jchristopher0033/effective-methods-to-secure-your-online-store-against-cyber-threats-457e | dataencryption, onlinesafety, cyberprotection, ecommercesecurity | In the digital age, the security of online stores is paramount. With cyber threats evolving and becoming more sophisticated, online retailers must implement robust security measures to protect their businesses and customers. Here are some effective [methods to secure your online store](https://www.opencart.com/blog/7-ways-to-protect-your-online-store-from-cybercriminals) against cyber threats:
## 1. Use Strong, Unique Passwords
Passwords are the first line of defense against unauthorized access. Ensure that all accounts associated with your online store use strong, unique passwords. Encourage customers to do the same by implementing password strength indicators and requiring complex passwords.
## 2. Implement Two-Factor Authentication (2FA)
Two-factor authentication adds an extra layer of security by requiring a second form of verification in addition to a password. This could be a code sent to a mobile device or an authentication app. Implementing 2FA can significantly reduce the risk of unauthorized access.
## 3. Keep Software and Plugins Updated
Regularly updating your eCommerce platform, plugins, and any third-party software is crucial. Updates often include security patches that protect against newly discovered vulnerabilities. Automate updates where possible to ensure your store is always protected.
## 4. Use a Secure Hosting Provider
Choose a reputable hosting provider that offers robust security features, such as SSL certificates, firewall protection, and regular backups. A secure hosting environment is essential for protecting your online store from cyber threats.
## 5. Encrypt Data Transmission
Ensure that all data transmitted between your online store and your customers is encrypted. This can be achieved by implementing SSL/TLS certificates, which encrypt data and protect it from interception by malicious actors.
## 6. Regularly Perform Security Audits
Conduct regular security audits to identify and address vulnerabilities in your online store. Security audits can be performed by internal teams or third-party security experts. These audits should include penetration testing, code reviews, and vulnerability scanning.
## 7. Educate Your Staff
Your employees play a critical role in maintaining the security of your online store. Provide regular training on cybersecurity best practices, such as recognizing phishing attempts, securing sensitive information, and responding to potential security incidents.
## 8. Implement Access Controls
Limit access to sensitive areas of your online store to only those who need it. Implement role-based access controls to ensure that employees can only access the information and systems necessary for their job functions. This minimizes the risk of insider threats.
## 9. Monitor for Suspicious Activity
Continuous monitoring for suspicious activity is essential for early detection of cyber threats. Use security information and event management (SIEM) systems to collect and analyze data from various sources. This helps in identifying unusual behavior and responding to threats in real-time.
## 10. Have an Incident Response Plan
Despite your best efforts, security breaches can still occur. Having a well-defined incident response plan in place can help minimize the impact of a cyber attack. Your plan should include procedures for detecting, containing, and eradicating threats, as well as communication strategies for informing customers and stakeholders.
## Conclusion
Securing your online store against cyber threats requires a multi-faceted approach. By implementing strong passwords, two-factor authentication, regular updates, secure hosting, data encryption, security audits, employee education, access controls, monitoring, and an incident response plan, you can significantly reduce the risk of cyber attacks and protect your business and customers. Stay vigilant and proactive in your security efforts to ensure the continued success and trust of your online store. | jchristopher0033 |
1,882,449 | Developing IoT Applications with Raspberry Pi | Introduction In the current era of technology, the Internet of Things (IoT) has brought... | 0 | 2024-06-10T00:34:05 | https://dev.to/kartikmehta8/developing-iot-applications-with-raspberry-pi-53el | webdev, javascript, beginners, programming | ## Introduction
In the current era of technology, the Internet of Things (IoT) has brought about a major revolution with its ability to connect various devices and enable seamless communication between them. One of the most popular devices used for developing IoT applications is the Raspberry Pi. It is a low-cost, credit card-sized computer that is capable of performing various tasks and can be easily integrated with different sensors and devices. In this article, we will delve into the various aspects of developing IoT applications using Raspberry Pi, including its advantages, disadvantages, and features.
## Advantages of Using Raspberry Pi for IoT Development
1. **Low Cost:** Raspberry Pi is an affordable option for individuals and companies looking to build their own IoT projects.
2. **User-Friendly:** It is easy to use and does not require specialized skills to operate, making it accessible to a broader audience.
3. **Compact Size:** Its small size makes it easy to handle and install in various locations.
4. **Strong Community Support:** A large community of developers provides constant support and a wealth of resources for both beginners and experienced users.
## Disadvantages of Using Raspberry Pi for IoT Development
1. **Limited Processing Power:** Raspberry Pi has limited processing capabilities compared to more powerful computers, which can be a hindrance in complex tasks.
2. **Dependence on Internet Connectivity:** It relies heavily on internet connectivity, and unstable network connections can disrupt data transmission.
3. **Security Concerns:** The device is not as secure as other more specialized devices, making it vulnerable to cyber attacks.
## Key Features of Raspberry Pi for IoT Development
1. **Connectivity Options:** Raspberry Pi comes equipped with built-in Wi-Fi and Bluetooth capabilities, facilitating seamless connectivity with other devices.
2. **Multiple I/O Interfaces:** It offers a variety of input-output interfaces like GPIO, SPI, and I2C, which makes it highly compatible with different sensors and devices.
3. **Support for Various Operating Systems:** Raspberry Pi supports multiple operating systems such as Linux, Windows, and Android, offering developers the flexibility to choose the environment they are most comfortable with.
### Example of Setting Up Raspberry Pi for IoT
```bash
# Initial setup for Raspberry Pi
sudo raspi-config
# Enabling SSH to allow remote access
sudo systemctl enable ssh
sudo systemctl start ssh
# Connecting to Wi-Fi
sudo raspi-config # Navigate to network options and enter Wi-Fi details
```
## Conclusion
In conclusion, Raspberry Pi is a powerful and affordable tool for developing IoT applications. Its advantages, such as low cost and ease of use, make it a popular choice among developers. However, it also has its limitations, such as processing power and security concerns. Nevertheless, with its versatile features, Raspberry Pi continues to be a go-to device for building innovative and cost-effective IoT solutions. | kartikmehta8 |
1,541,634 | How to Easily Dockerize a Next.js Application | Hi there! In this little post I'm going to show you how to use Docker to containerize your Next.js... | 0 | 2024-06-10T00:31:18 | https://dev.to/emanuelnav/how-to-easily-dockerize-a-nextjs-application-p3f | docker, nextjs, javascript, tutorial | Hi there! In this little post I'm going to show you how to use Docker to containerize your Next.js application.
## What is Docker?
Docker is an open-source platform that enables developers to automate the deployment, scaling, and management of applications inside lightweight, portable containers. Containers are a way to package applications with their dependencies and runtime environment, allowing them to run consistently across different environments, such as development, testing, and production, without any compatibility issues.
## Setting up a Next.js project
1.First we need to create a nextjs application.
```
npx create-next-app@latest project_name
```
2.Create Dockerfile in the root directory of your project
```
//Dockerfile
FROM node:18-alpine
# Initialize a working directory in your new os
WORKDIR /app
# Copy package.json into the new working directory
COPY package*.json ./
RUN npm install
# Copy all the files from your current directory to the working directory of the container
COPY . .
# Expose port 3000 from your container to local network
EXPOSE 3000
CMD npm run dev
```
3.Create the docker container
```
docker build -t next-docker-demo .
```
Where `next-docker-demo` is the image name.
>
`.` to tell docker that the Dockerfile is in current folder.
4.We can use docker compose, so we don’t need to remember long commands to build or run containers. We can simply just use `docker-compose build` and `docker-compose up`.
Add a `docker-compose.yml` file to your root directory.
```
version: '3.8'
services:
app:
image: next-docker-demo
build: .
volumes:
- .:/app
- /app/node_modules
- /app/.next
ports:
- "3000:3000"
```
```
docker-compose build
```
```
docker-compose up -d
```
> `-d` to run the the container in the background.
Now if you access `http://localhost:3000`, you will see your working app! | emanuelnav |
1,882,430 | DEV Challenge: Beaches 🏖️ | This is a submission for [Frontend Challenge... | 0 | 2024-06-10T00:30:35 | https://dev.to/oliviapandora/dev-challenge-beaches-pjl | 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_
This is my submission to the Frontend Challenges: Beaches. I've seen the other challenges, thought about entering and then felt like I didn't have the time/skills. But I want to keep practicing my programming, so I decided to give it a try!
{% codepen https://codepen.io/oliviapandora/pen/dyERjBr %}
When I decided to do this, I knew I wouldn't spend a ton of time on it, so my first choice was to let the colors do the heavy lifting. My instinct is to make design choices that match my own style, but I wanted something different, but still felt like me. The idea of beaches made me think of early summer, but also a vintage 1950s/1960s summer ads on the beach when all the colors are saturated, vibrant, and warm. This is the idea I wanted for the picture I ended up choosing, along with the colors. The white, has a slight yellow tint and instead of black, I'm using a very dark blue. All to maintain the contrast, while softening it.
While I was doing this, it reminded me of how much I like the design process, the colors, fonts, and thinking of how it all flows together. I also want to learn some more advanced CSS, so I can code my portfolio website and any other small projects. I wouldn't say this is my best work by any means, but I'm glad I didn't let that stop me. I did have some more complex ideas, but to save time went a simpler way. The idea is I can look back at this code later on and easily think of improvements or changes. I also realized I don't know any JavaScript because Python became my focus. I do want to learn JavaScript at some point, but I'm not sure when.
Overall, I'm happy I was able to get some practice in and I hope to participate in more challenges in the future! | oliviapandora |
1,882,432 | Capturing Beach Memories: A Polaroid Showcase of the World's Top Beaches | This is a submission for [Frontend Challenge... | 0 | 2024-06-10T00:18:09 | https://dev.to/jennavisions/capturing-beach-memories-a-polaroid-showcase-of-the-worlds-top-beaches-4gjf | 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
Hello DEV,
This is my first entry here.
I incorporated a Polaroid photo effect to evoke a sense of nostalgia and capture the essence of cherished beach memories. Using HTML, CSS, and JavaScript, I crafted a visually appealing display where each beach is presented as if captured on a polaroid. Clicking on any beach card opens up a gallery, allowing users to browse all images. This interactive experience is enhanced with icons for location and additional information, enriching the exploration of each beach.
Credits:
Beach images from [Freepik](https://www.freepik.com/)
Grainy background from [freecodecamp] (https://www.freecodecamp.org/news/grainy-css-backgrounds-using-svg-filters/)
## Demo
<p class="codepen" data-height="300" data-default-tab="html,result" data-slug-hash="vYwJvNM" data-pen-title="Beach challenge" data-user="JennaVisions" style="height: 300px; box-sizing: border-box; display: flex; align-items: center; justify-content: center; border: 2px solid; margin: 1em 0; padding: 1em;">
<span>See the Pen <a href="https://codepen.io/JennaVisions/pen/vYwJvNM">
Beach challenge</a> by JennaVisions (<a href="https://codepen.io/JennaVisions">@JennaVisions</a>)
on <a href="https://codepen.io">CodePen</a>.</span>
</p>
<script async src="https://cpwebassets.codepen.io/assets/embed/ei.js"></script>
[Beach challenge](https://codepen.io/JennaVisions/full/vYwJvNM)
## Journey
Please note that the project is not fully responsive at the moment. There are some fixes and updates that I plan to implement later, which I haven't been able to complete yet. Despite these pending improvements, building each step of the challenge has been an enjoyable journey.
In addition to the visual design, I prioritized accessibility features to ensure a user-friendly experience for all visitors. Incorporating alt attributes for images and keyboard controls for navigation in the lightbox gallery were among the measures to enhance accessibility. While the project is not yet fully responsive, I plan to improve it in future updates.
Cheers | jennavisions |
1,882,431 | Glammed Up The Beaches With Blurry Animations. | Submission for Frontend Challenge v24.04.17, Glam Up My Markup: Beaches 🏖️ What I... | 0 | 2024-06-10T00:13:38 | https://dev.to/_zaihl/glammed-up-with-blurry-animations-401o | devchallenge, frontendchallenge, css, javascript | ## Submission for [Frontend Challenge v24.04.17](https://dev.to/challenges/frontend-2024-05-29), Glam Up My Markup: Beaches 🏖️
## What I Built
For this challenge, I created a dynamic, animated web page featuring a day/night mode toggle 🌞🌜, an infinite carousel 🔄, and several other interactive elements. My goal was to brush up on my HTML, CSS, and vanilla JavaScript skills while experimenting with animations and DOM manipulation. This project was a deep dive into pure JavaScript without relying on any external libraries (except for Font Awesome), pushing me to understand and leverage core web technologies.
There are five main sections in the website:
1. **Intro Page**: The intro page welcomes you with a "Take me to the beach" button at the center. Here, you can toggle between day and night mode and enjoy the animations.
2. **Beach Carousel**: Clicking "Take me to the beach" transports you to a serene, animated beach scene with an infinite carousel of beach images.
3. **Carousel Items**: Each item in the carousel can be expanded for a closer look at the beautiful beaches 🏝️.
4. **Return to Intro**: If you missed the day/night toggle animations, you can go back by clicking the 'eye' icon on the top right 👁️.
5. **Hide Carousel**: A button to hide the carousel and fully appreciate the background animations.
## Demo
I have pushed the website on GitHub and Vercel. Here is the link in case you want to check it out:
[GitHub](https://github.com/zaihl/dev.to-frontend-challenge)
Or you can just look at my CodePen below:
{% codepen https://codepen.io/SI-the-typescripter/pen/QWRMJeN %}
I recommend visiting [this link](https://dev-to-frontend-challenge.vercel.app/) if you are on a mobile.
## Journey
Here is my journey of building a completely vanilla JavaScript project. I hope you enjoy the read 📖.
### The Moment of Discovery
It all started on June 6th. Up until that moment, I was a wanderer on dev.to without an account, simply breezing through the website. Suddenly, a "dev challenges" section caught my eye 👀. Intrigued, I clicked on it, not fully understanding what was expected in the challenge. After some contemplation, I decided to participate. This marked my first foray into a development challenge, driven by a deep-seated pursuit of knowledge 📚.
### Embarking on a Tutorial Spree
Hi, I'm a pre-final year undergraduate college student. The programming industry is incredibly competitive, and standing out is crucial. During my summer vacation, I decided to dive into learning as much as possible. I purposefully entered what many call "tutorial hell" 🔥. There were numerous concepts I couldn't grasp, a common struggle for novice full-stack developers. I'm the type of person who prefers to understand everything before moving forward rather than reverse-engineering tutorials.
Recently, I dabbled in Next.js with TypeScript and noticed my JavaScript skills deteriorating. Despite being in college for three years, I had never built a full-fledged project from scratch. Shocking, right? So, I challenged myself. Even though I had forgotten much about DOM manipulation with JavaScript and had many gaps in my CSS knowledge, I took on this challenge. It took me over 15 hours ⏱️, but I'm proud of what I've built. It's not perfect, but it's a significant accomplishment for me.
### The Tale of Two Versions
This project you are viewing is actually the second version. My initial attempt was based on a misconception: I thought I couldn't modify the HTML at all, even with JavaScript. It was only after reviewing the previous winners' projects that I realized my mistake 🤦. This revelation led to a complete disappointment. I did not touch this challenge for the next two days. Finally, after coming to terms with myself, I created a version that leverages extensive DOM manipulation. The second version employs techniques like `appendChild`, `insertAdjacentElement`, `createElement`, and `classList` manipulations to dynamically create and manage elements.
I apologize if you've taken a look at my JavaScript. It's messy 🌀. In my defense, I wrote most of it while sleep-deprived 😴.
### Challenges and Obsessions
The journey wasn't without its hurdles. I wasted an entire day on a self-imposed challenge that existed only in my mind. Transitioning to the second version was both exhausting and exhilarating. I had never developed a project with DOM manipulation before; I had only seen others do it. Naturally, I became deeply interested. I developed an obsession with animations, despite having little prior experience. I wanted to recreate the SAO link start animation... but yeah, that's inhumanely difficult 🚀. Learning to implement animations and transitions had its learning curve, but in hindsight, I'm proud of the results – even if I might have overused them a bit! The dark mode and light mode toggles are my favorite. After approximately 15 hours of work, including learning, I was finally finished. Yes, it sounds excessive, but being a perfectionist, I couldn't help myself.
Take a look at my favorite part:
### JavaScript Magic: Dynamic HTML Creation
I didn't alter the `.html` file directly but used JavaScript to create numerous elements dynamically. Here's a breakdown of what I achieved:
1. **Meta Tag & Font Library**: I modified the `<meta>` tag to prevent double-tap zooming and added the Font Awesome library.
2. **Day/Night Mode Container**: I created a container for toggling between dark and light modes.
3. **Infinite Carousel**: An infinite carousel was born, with a working next button and a previous button that needs some tweaks. There's a bug that might cause storage issues, which I couldn't quite resolve.
4. **Expanded Container**: Clicking on any carousel item expands it into a detailed container.
5. **Hide Carousel Button**: I added a button to hide the carousel, allowing users to fully appreciate the animations.
### Mobile-First Approach 📱
I adopted a mobile-first approach, ensuring the design and functionality worked seamlessly on smaller screens before scaling up to desktop. I tackled each of the five major features one at a time, meticulously refining each element. Testing on various devices, from phones to iPads, was crucial. Unfortunately, I don't have a screen larger than 1440p, so we'll need to see how it performs on larger displays 🖥️.
When all the features were implemented, that's when the real bug-solving began. There were countless adjustments, media queries, and keyframes. I was nearly burnt out 🔥.
### Code Organization
Let's be honest – my code is a bit (a lot) messy. Feel free to dive in and see for yourself, or perhaps ask ChatGPT or Gemini to clean it up 🧹!
### Vanilla Challenge: No Libraries Allowed
I set myself the challenge of using no external libraries, aiming to become fully proficient in vanilla JavaScript. The only exception was the Font Awesome library. This self-imposed rule pushed me to deeply understand the core technologies and enhance my problem-solving skills 🧠.
### Growth in CSS Skills 🎨
My CSS skills have definitely improved through this project. As a relatively new front-end developer, I lacked hands-on practice. This project served as a valuable opportunity to hone my skills, especially in crafting complex animations and responsive layouts.
### Final Thoughts
Ultimately, my advice to anyone taking on a similar challenge is simple: have fun 🎉. Don't do it solely for the first place; do it to push your limits, learn something new, and challenge yourself to solve problems. Each feature I developed wasn't pre-planned. I'd sit there, often clueless at first, but the moments of deep thought and problem-solving led to my work flourishing 🌱.
Before I end this, I would like to visually show the features.
1. **Intro**: This is where you start.
2. **Infinite Carousel**: Built with pure vanilla JavaScript.
3. **Expanding Each Beach**: Each beach can be expanded for a closer look.
4. **Hiding the Carousel**: See the intro again by hiding the carousel.
Thank you for taking the time to read about my journey. I hope it inspires you to embark on your own projects, pushing past your boundaries and discovering the joy of creating something from scratch ✨.
PS. Finally got over my 'first post phobia'. Now I won't feel nervous to make more posts 😌.
PSS. I can finally sleep now! A good night's sleep 🛌.
<!-- 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! --> | _zaihl |
1,883,893 | Slow productivity framework | Sharing my journey from toxic productivity to embracing the Slow Productivity framework | 0 | 2024-06-11T14:55:47 | https://jonathanyeong.com/slow-productivity-framework/ | productivity | ---
title: Slow productivity framework
description: Sharing my journey from toxic productivity to embracing the Slow Productivity framework
published: true
date: 2024-06-10 00:00:00 UTC
tags: productivity
canonical_url: https://jonathanyeong.com/slow-productivity-framework/
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/bl7yoyi79rqdzc21do9t.png
---
Years ago, I was fully hooked to the world of productivity. At the time, I was getting up at the crack of dawn to get as much done. I used time blocking to try to maximise every hour of my day. Working a full-time job, then spending 4–5 hours outside the job working on various side projects. I would cut out any activity that I deemed "unproductive". And when something unexpected came along that interrupted my time block, it caused anxiety.
Only recently did I realise that this productivity mindset was toxic. Yes, it took me a pandemic and also burning out to realise that toxic productivity exists. Gaslighting myself is my forte. To this day, I'm still battling with the feeling of not doing enough. That there aren't enough hours in the day to be "productive".
To have a healthier mindset, I needed a new "productivity" framework. I wanted a framework that would help me prioritise what to do outside my 9-5 job. Something that would let me roll with the punches when the unexpected came up. And would help me feel good about what I chose to spend time on. So I present to you my **"slow productivity" framework**.
When I'm trying to decide what to do. I have to answer three questions:
1. Will I have fun?
2. Will I learn something?
3. Will I regret it if I didn't do it?
If I say yes to any one of these questions, I should do the thing and not feel guilty about doing it. Some activities are more worth doing than others, I can tell if it's a yes to multiple questions. But if it's a no to all questions, then I won't do the activity.
Here's an example of how I applied the framework this morning.
I woke up feeling refreshed, which rarely happens. I wanted to immediately start working on a side project before work. It's something that I would have fun with and learn something. Ticking two of the three questions. This task is something that I would consider productive.
Now I sit at my desk, turn on my laptop, and get ready to code. But my cat jumps up on my table and wanted pets. She was far too cute, and demanding, to ignore. There went my productive morning time. In the past, I would've been annoyed and felt guilty that I was doing something unproductive. But today, I ran through the three questions. Am I having fun? Yes. Will I regret it if I didn't do it? 100% yes. Always pet the cat if it offers.
Sometimes unexpected events happen that interrupt your productive task. With this framework, I feel less anxiety and guilt around these events. It might not work for everyone, but I hope it helps you feel better about doing the "unproductive" activities. | jonoyeong |
1,883,384 | How I’m learning Clojure in 2024 | I’ve recently been learning a bit of Clojure and it’s been a lot of fun! I thought I would note down... | 0 | 2024-06-11T04:14:48 | https://anthonybruno.dev/2024/06/10/How-Im-learning-Clojure-in-2024/ | clojure, programming, beginners | ---
title: How I’m learning Clojure in 2024
published: true
date: 2024-06-10 00:00:00 UTC
tags: clojure,programming,beginners
canonical_url: https://anthonybruno.dev/2024/06/10/How-Im-learning-Clojure-in-2024/
---
I’ve recently been learning a bit of Clojure and it’s been a lot of fun! I thought I would note down what has been useful for me, so that it might help others as well.
## Jumping right in
[https://tryclojure.org/](https://tryclojure.org/) is a great intro to the language. It provides a REPL and a tutorial that takes you through the basic features of Clojure.
Importantly, it forces you to get used to seeing lots of `(` and `)`!
## Doing exercises
Exercism provides small coding challenges for a bunch of languages, including [Clojure](https://exercism.org/tracks/clojure). Unlike other platforms (_cough_ leetcode _cough_), Exercism is focused on learning and I found it a great way to practice writing Clojure.
It provides a code editor and evaluates each challenge when you submit. There’s also a way to submit answers locally from your computer, but I found it quicker just to use the website.
## Editor setup
I ended up setting up Neovim for developing locally. This guide was a great inspiration:[https://endot.org/2023/05/27/vim-clojure-dev-2023/](https://endot.org/2023/05/27/vim-clojure-dev-2023/), although I did end up going with something a little bit simpler.
My .vimrc can be seen [here](https://github.com/AussieGuy0/dotfiles/blob/e25b8da7c01ea1358723a19ca1319cab4888beff/.vimrc)but probably the most important plugin is [Conjure](https://github.com/Olical/conjure), which provides REPL integration in Neovim.
The REPL is one of the big differences compared to programming in other languages. Basically, you start a REPL in the project directory and then you can evaluate code in your editor in that REPL.
This basically gives you really short iteration cycles, you can ‘play’ with your code, run tests, reload code in a running app and all without leaving your editor!
To understand REPL driven development, I really liked this [video with teej\_dv and lispyclouds](https://www.youtube.com/watch?v=uBTRLBU-83A). One key thing I learnt was using the`comment` function to be able to evaluate code without affecting the rest of my program.
```
; my super cool function
; given a number, adds 2 to it!
(defn add-2
[n]
(+ n 2)
)
; This tells Clojure to ignore what comes next
; but it still has to be syntactically correct!
(comment
(add-2 3) ; <-- I can evaluate this to check my add-2 function :)
)
```
By opening a REPL and using the Conjure plugin mentioned before I can:
- `,eb`: Evaluate the buffer I am in. Kinda like loading up the file I have opened into the REPL.
- `,ee`: Evaluate the expression my cursor is under.
- `,tc`: Run the test my cursor is over.
- `,tn`: Run all tests in current file.
I use the following alias in my `.bash_aliases` to easily spin up a REPL:
```
# From https://github.com/Olical/conjure/wiki/Quick-start:-Clojure
# Don't ask me questions about how this works, but it does!
alias cljrepl='clj -Sdeps '\''{:deps {nrepl/nrepl {:mvn/version "1.0.0"} cider/cider-nrepl {:mvn/version "0.42.1"}}}\'\'' \
--main nrepl.cmdline \
--middleware '\''["cider.nrepl/cider-middleware"]'\'' \
--interactive'
```
## Docs
For docs, I really like [https://clojuredocs.org/](https://clojuredocs.org/), which has the docs for the core library. I like the fact that users can submit code examples, which provides better information for each function.
## Projects
I’ve currently have 2 projects in Clojure to further my learning.
1. A bad terminal-based clone(ish) of [Balatro](https://store.steampowered.com/app/2379780/Balatro/). Balatro is a very addictive deck builder rougelike game. Doing this has been fun and it feels very natural to ‘build up’ over time. The source code can be seen [here](https://github.com/AussieGuy0/balatro-clj).
2. A application that converts a subreddit into an RSS feed. The idea that this can be a webapp that produces daily RSS feeds for a collection of subreddits. [Source code](https://github.com/AussieGuy0/reddit-to-rss)
## The End
Thanks for reading! | aussieguy |
1,851,932 | Dynamic sitemap with django | A sitemap is an xml file that functions as a map to navigate your site. Hence the name; Site (site)... | 0 | 2024-06-09T18:50:24 | https://coffeebytes.dev/en/dynamic-sitemap-with-django/ | django, python, seo | ---
title: Dynamic sitemap with django
published: true
date: 2024-06-10 00:00:00 UTC
tags: django,python,seo
canonical_url: https://coffeebytes.dev/en/dynamic-sitemap-with-django/
cover_image: https://dev-to-uploads.s3.amazonaws.com/uploads/articles/uv0ub6ry6844jemd8j0f.jpg
---
A sitemap is an xml file that functions as a map to navigate your site. Hence the name; Site (site) map. Search engines, such as google, bing, yahoo and others, use the sitemap of a site as a starting point to analyze its content and include it in their search results.
Ignoring the sitemap of your website could bring [catastrophic consequences to your site's SEO.](https://coffeebytes.dev/en/my-mistakes-regarding-the-tech-seo-optimization-of-my-website/)
## Structure of a sitemap
A sitemap is an xml file, which has an element called urlset, which is a collection of url elements. Each url element has a location, in this case its url address, a frequency of change, a priority and other optional elements, such as images.
``` xml
<?xml version="1.0" encoding="UTF-8"?>
<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml">
<url>
<loc>http://example.com/objecto/1</loc>
<lastmod>1970-01-01</lastmod>
<changefreq>monthly</changefreq>
<priority>0.8</priority>
</url>
</urlset>
```
### Split Sitemaps
When a sitemap is very large it is possible to divide it into smaller sitemaps, using a _sitemapindex_ element and _sitemap_ sub elements, each with its respective location.
``` xml
<?xml version="1.0" encoding="UTF-8"?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
<sitemap>
<loc>http://www.example.com/sitemap1.xml</loc>
</sitemap>
<sitemap>
<loc>http://www.example.com/sitemap2.xml</loc>
</sitemap>
</sitemapindex>
```
## Framework of sitemaps in Django
Django already has an internal framework for sitemap generation, _django.contrib.sitemaps_, which allows us to create sitemaps dynamically in conjunction with _django.contrib.sites_.
_django.contrib.sites_ is a framework included in django that allows you to manage different websites with the same django application.
To use the sitemaps framework, we need to add the two packages to the INSTALLED\_APPS variable and also add the site identifier.
``` python
# settings.py
SITE_ID = 1
INSTALLED_APPS = (
'django.contrib.sites',
'django.contrib.sitemaps',
)
```
Since Django keeps track of the sites that are managed by the application in the database, you will need to run migrations to update the database.
## Defining a sitemap in Django
Now redirect to your application, at the same level as your _models.py_ file and create a file called _sitemaps.py_.
Inside this file we are going to inherit a class from the _Sitemap_ class provided by Django.
``` python
# app/sitemaps.py
from django.contrib.sitemaps import Sitemap
from .models import Videogame
class VideogameSitemap(Sitemap):
changefreq = 'monthly'
priority = 0.8
def items(self):
return Videogame.objects.filter(published=True)
def lastmod(self, obj):
return obj.modified
```
### items
By overwriting the items function we will define the queryset that will be used as a base, you can modify it as much as you want: partition it, limit it to attributes of your objects or as you prefer.
### location
Location refers to the url of the resource. If we do not define a _location_ method, Django will use the _get\_absolute\_url_ method of our model to generate.
``` python
# sitemaps.py
class VideogameSitemap(Sitemap):
# ...
def location(self, obj):
return obj.metodo_personalizado()
```
### changefreq
Refers to the frequency with which the content changes. You can use a function to generate it dynamically according to attributes of the object itself or leave it fixed.
``` python
# app/sitemaps.py
class VideogameSitemap(Sitemap):
def changefreq(self, obj):
# ...
return 'monthly'
```
### priority
It dictates the priority of the resource. It is possible to use a function to generate the priority dynamically through attributes or any other flow you prefer.
``` python
# app/sitemaps.py
class VideogameSitemap(Sitemap):
def priority(self, obj):
# ...
return 0.8
```
## Adding a sitemap to Django urls
Now we need to add the url to our project’s _urls.py_ file. The view we will use, called _sitemap_, is provided by django and we just pass it a dictionary that relates the sitemap we just created and pass it as a parameter.
Within the sitemaps variable you can add other sitemaps for other applications.
``` python
from django.contrib.sitemaps.views import sitemap
from videogame.sitemaps import VideogameSitemap
sitemaps = {
'videogames': VideogameSitemap,
}
urlpatterns = [
# ...
path('sitemap.xml', sitemap, {'sitemaps': sitemaps},
name='django.contrib.sitemaps.views.sitemap'),
]
```
## Setting the domain name in the sitemap
If we access the sitemap, you will notice that the base url of the urls is _example.org_, to define another one we need to modify the base from the administrator. The form is located at _/admin/sites/site/_
_Modify the default domain of the sitemap in /admin/sites/site/_
## Sitemap cache
Remember that, generally, when you are creating a sitemap dynamically, from each of the objects in your database, you are going through it completely every time you access it. If your database is colossal, this may not be convenient. Depending on the type of site you manage, you may want to store the sitemap in the [Django cache](https://coffeebytes.dev/en/caching-in-django-rest-framework-using-memcached/). | zeedu_dev |
1,882,423 | [Game of Purpose] Day 22 | Today I came back from travelling, so no progress. | 27,434 | 2024-06-09T23:51:37 | https://dev.to/humberd/game-of-purpose-day-22-pl4 | gamedev | Today I came back from travelling, so no progress. | humberd |
1,882,419 | helloWorld("print") | A post by Momo241 | 0 | 2024-06-09T23:28:33 | https://dev.to/mored241/helloworldprint-541e | mored241 | ||
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1,882,414 | Top 5 Chrome Extensions for UI/UX Designers | Chrome web store offers a lot of extensions that can be helpful in various domains, in this article I... | 0 | 2024-06-09T23:16:39 | https://dev.to/douiri/top-5-chrome-extensions-for-uiux-designers-1m9l | extensions, webdev, productivity | Chrome web store offers a lot of extensions that can be helpful in various domains, in this article I want to share the 10 extensions that I found useful and can help designers or frontend developers.
## 1. [WhatFont](https://chromewebstore.google.com/detail/whatfont/jabopobgcpjmedljpbcaablpmlmfcogm?hl=en-US)
this extension shows you the font styles when hovering over any text and more details on click.
## 2. [ColorZilla](https://chromewebstore.google.com/detail/colorzilla/bhlhnicpbhignbdhedgjhgdocnmhomnp?hl=en-US)
a tool with colorful tools to help you get the pixel color from anywhere on your screen even outside of the browser, a color picker, and a gradient generator.
## 3. [Page Ruler](https://chromewebstore.google.com/detail/page-ruler/jcbmcnpepaddcedmjdcmhbekjhbfnlff?hl=en-US)
this extension is helpful if you want to measure elements on a web page.
## 4. [GoFullPage](https://chromewebstore.google.com/detail/gofullpage-full-page-scre/fdpohaocaechififmbbbbbknoalclacl?hl=en-US)
Take a screenshot of the entire webpage with a single click for future reference and inspiration.
## 5. [SVG Gobbler](https://chromewebstore.google.com/detail/svg-gobbler/mpbmflcodadhgafbbakjeahpandgcbch?hl=en-US)
with SVG Gobbler you can optimize and download SVGs that you like from any page
---
these are the extensions I use regularly, feel free to leave the ones you think are the best in the comment section.
this list was taken from this article [Top 10 Chrome Extensions for Frontend Developers in 2024](https://douiri.org/frontend-chrome-extensions/) give me your feedback about the blog so I can improve it 😊. | douiri |
1,882,413 | 𝗙𝗿𝗲𝘀𝗵𝗣𝗶𝗰𝗸 Web application | 🚀 𝗙𝗿𝗲𝘀𝗵𝗣𝗶𝗰𝗸: 𝗦𝗶𝗺𝗽𝗹𝗶𝗳𝘆𝗶𝗻𝗴 𝗚𝗿𝗼𝗰𝗲𝗿𝘆 𝗣𝗶𝗰𝗸𝘂𝗽𝘀 🚀 I'm thrilled to share FreshPick, a project I recently... | 0 | 2024-06-09T22:58:34 | https://dev.to/clear008/web-application-2e5d | 🚀 𝗙𝗿𝗲𝘀𝗵𝗣𝗶𝗰𝗸: 𝗦𝗶𝗺𝗽𝗹𝗶𝗳𝘆𝗶𝗻𝗴 𝗚𝗿𝗼𝗰𝗲𝗿𝘆 𝗣𝗶𝗰𝗸𝘂𝗽𝘀 🚀
I'm thrilled to share FreshPick, a project I recently completed as part of the #ALXSE Program. FreshPick is a web application designed to streamline the process of ordering fresh groceries for pickup at your local store, supporting local farmers and providing fresh produce to customers conveniently.
📌 𝗣𝘂𝗿𝗽𝗼𝘀𝗲 𝗼𝗳 𝘁𝗵𝗲 𝗣𝗿𝗼𝗷𝗲𝗰𝘁
FreshPick was created to make it easier for people to order fresh, local produce online and pick it up at their convenience. Our goal was to support local farmers while providing a seamless shopping experience for users.
👥 𝗧𝗲𝗮𝗺 𝗠𝗲𝗺𝗯𝗲𝗿𝘀, 𝗥𝗼𝗹𝗲𝘀, 𝗮𝗻𝗱 𝗧𝗶𝗺𝗲𝗹𝗶𝗻𝗲
𝘖𝘶𝘳 𝘥𝘦𝘥𝘪𝘤𝘢𝘵𝘦𝘥 𝘵𝘦𝘢𝘮 𝘮𝘦𝘮𝘣𝘦𝘳𝘴 𝘪𝘯𝘤𝘭𝘶𝘥𝘦𝘥:
- @Khalil El Amraoui (Developer/Tester)
- @Soufiane Elmouajjeh (Tester/Designer)
- Leknouch Wissal (Designer/Developer)
We developed the project over 7 weeks:
- 𝘞𝘦𝘦𝘬 1: Project proposal and approval
- 𝘞𝘦𝘦𝘬 2: MVP proposal and approval
- 𝘞𝘦𝘦𝘬 3: Trello board setup
- 𝘞𝘦𝘦𝘬𝘴 4-5: Development and progress updates
- 𝘞𝘦𝘦𝘬 6: Landing page deployment and presentation preparation
- 𝘞𝘦𝘦𝘬 7: Final presentation and blog post reflection
🎯 𝗧𝗮𝗿𝗴𝗲𝘁 𝗔𝘂𝗱𝗶𝗲𝗻𝗰𝗲
FreshPick was designed for busy individuals who prefer fresh, locally sourced produce and want to save time by ordering groceries online and picking them up at their convenience.
🌟 𝗜𝗻𝘀𝗽𝗶𝗿𝗮𝘁𝗶𝗼𝗻 𝗮𝗻𝗱 𝗣𝗲𝗿𝘀𝗼𝗻𝗮𝗹 𝗦𝘁𝗼𝗿𝘆
Our team's connection to fresh food and local produce inspired FreshPick. For me, the inspiration came from my childhood. Growing up in a bustling city, my family would visit the local farmers' market every weekend to buy fresh produce. This project brought back those memories and the joy of fresh food, motivating me to create something that would make it easier for others to access fresh, local produce.
🏆 𝗣𝗿𝗼𝗷𝗲𝗰𝘁 𝗔𝗰𝗰𝗼𝗺𝗽𝗹𝗶𝘀𝗵𝗺𝗲𝗻𝘁𝘀
We successfully created a fully functional web application that allows users to order groceries online for pickup. Key accomplishments include:
- User-Friendly Design.
- Real-Time Updates.
- Real-Time Inventory Management.
💻 𝗧𝗲𝗰𝗵𝗻𝗼𝗹𝗼𝗴𝗶𝗲𝘀 𝗨𝘀𝗲𝗱
- Frontend: HTML5, CSS3, JavaScript, and Tailwind CSS.
- Backend: Python and Django with SQLite.
- Deployment: Vercel for deployment and #Railway Postgres as a DataBase.
💬 𝗔𝗯𝗼𝘂𝘁 𝗠𝗲
I'm a software engineering student at #alx passionate about developing web applications that solve real-world problems. I enjoy working on projects that challenge me and help me grow my skills. Connect with me to learn more about my journey and future projects!
[GitHub Project](https://github.com/khalilelamraoui/Fresh-pick)
[Deployed Project](https://fresh-pick.vercel.app/)
[Landing Page](https://clear008.github.io/FreshPick/)
[Visit my GitHub Profile](https://github.com/Clear008)
Feel free to reach out if you have any questions or feedback about FreshPick!
#ALX #ALXSE #alx_morocco #ALX_Africa #DoHardThings #software #full_stack #coding
| clear008 | |
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1,882,410 | ISO Proposal Standards for Music Sheet Notes , to Keyboard mappings, using the 88- standard key layout. | --- My name is also Jacob R. Thompson so i will be calling this the Thompson Audio Mapping Format... | 0 | 2024-06-09T22:44:50 | https://dev.to/vampeyer/iso-proposal-standards-for-music-sheet-notes-to-keyboard-mappings-using-the-88-standard-key-layout-396k | webdev, advanced, opensource, discuss |
--- My name is also Jacob R. Thompson so i will be calling this the
Thompson Audio Mapping Format ,
or the Thompson - " your name here " Audio format ,
I dont care , and
as I am looking for possible input from others and hopefully collaboration , just in voting on the matters.
----------------------------------------------------------------------------------------------------------------
Hello there , this is Vampeyer. Good afternoon.
I am building a piano in JS , and I wanted to be as musically accurate as possible to do things
like write and read music and maybe even create some standards and layouts , to build Ai audio in the future that could do things like ,
- Read a standardized music sheet of 88 - standard keys
- Properly write these keys , to an agreed upon file format (JSON) ,
and set up a structure for giving them ID's of sorts , to reference, in data.
- Implement proper CRUD operations for standardized data in files and sheets for composition ,
and composition tools. ( That's Create Read , Update and Delete operations , the basic building blocks. )
- So we can all write and read each others music properly online and possibly play other or new instruments.
- And Therefore, in the future we would even then have the ability too do more things like ,
- Convert a song, or a said audio file into a different classical musical
instrument.
- Translate and convert a song, or a said audio file into a different classical musical
instruments to play them for a particular piece of said music ,
and even be able to do it
- Autonomously.
- Does that sound like something that may be interesting too you ?
If so ,
..... Lets begin then shall we ?
-----------------------------------------------------------------------------------------
--- the first step is for us to both acquire and standardize a type of music sheet , to see what we are working with.
so that we can map it to the keyboard
- Luckily , My starter repo had a great detail of the 88 standard keys on a keyboard
I have done my research and , the
Classical Piano Keyboard Structure does, contain
- 88 keys
ref(1)-https://www.classicfm.com/discover-music/instruments/piano/why-pianos-have-88-keys/
ref(2)-https://musicsynthlab.com/keyboard-technology-and-features/exploring-digital-piano-sizes-88-key-vs-73-key-vs-61-key/
-----------
The second reference above , speaks of other numbers of keys and modifications for
other sizes. -- Now , due to the fact that me and the rest of the professional community ,
finds beings able to compose full pieces to be a requirement. Therefore , we will be suggesting
the 88- key standard for portability puroposes.
Here is another ,
virtual piano keyboard structure - for the A23 virtual piano -
@ - https://recursivearts.com/virtual-piano/
- this working unity model for a piano contains
- 36 regular keys , plus 25 sharpened keys ,
equaling to 61 keys , as a 61-key standard.
--------------------------------------------------------------------------------------------------
Now , what to do next ? - we have a working example here , on the working unity model for some basic
keyboard following structures.
https://recursivearts.com/virtual-piano/ ( Same URL as above )
-- On the piano there , you may see s key switch available for both
Real and Full modes. That of which are both attempts at
mapping keys to the keyboard.
using a medium , more minimal set of keys for a basic layout. starting with 1
and ending with > or something.
and then a full set with the same range but htings like shift + 1 and shift + 2 for seperate note keytones.
- On a full 61 keyboard layout.
-------------------------------------------------------------------------
Again , one more time , if you are not sure of what I am describing above , you may visit that URL on a
computer , and when using the virtual keyboard , you can adjust those real and full settings there to see
again , a potential layout structure for the keyboard , of all in which maps 61 keys ,
----- And as a professional grade developer , I must say , that is a mapping implementation
that simply must be updated and standardized ,
+for the betterment of reading and writing data n a musical composition.
I say that some easy standard mapping method for use on the KEYBOARD is what we need first.
---------------------------------------------------------------------------------------------------
-- Okay here we go , so this is my proposal for a new
88-standard notes - to - keyboard mapping architecture
( Which, we can talk about modifying it as well as long as you give me credit too !
- The point of this is that we come up with a method together that is BEST usable . )
-----------------------------------------------------------------------------------------------
-----------------------------------------------------------------------------------------------
Firstly , a New - Keyboard proposal structure for the mapping of
the 88 standard keys ,is simply More Structurally and functionally useful if and when those notes themselves are - based off of the keyboard, the hardware being considered here. .
--------------
- Finding that there are not enough
keys on the keyboard to make 88 keys , but there are enough keys to make 44 , So ,
+++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- I will be mapping them to keys , twice , once for 44 mapped keys on a top set
and 44 keys on a bottom set.
- and it will just switch on caps lock , that's it.
- But im trying to make a format around it for multiple instruments , in a way that others can make the same way.
- So thats just simply how I am mapping it for usability,
thats the meat and potatoes of it.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
- doing this method is superior because all of the keys can be accessed much more easily , and stored in a much more organized fashion.
accessed as well as then , even there could even be a USB upgrade for two keyboards ,
-- As to which if one wanted to map all 88 of the keys simultaneously, this could be possible with a hardware
driver upgrade. And one could essentially turn two keyboards into any possible instrument with a 88- key standard tuning.
- This is also a superior method because it can then standardize the proces as to where ,engineers could
actually just take two keyboards and then turn them into any type of muscial instrument.
- Then thereby , being able to create an elegant orchestra of sound and audio by first,
accomplishing a few key features such as ,
- Being able to quickly and easily reach the standard 88- keys at a time on a with a single keyboard , with a full
44 key , high and low style switch over. ( As too keep playing in sync as well. )
-Being able to reach all of the standard 88- at once on two keyboards, if the keys were then mapped
on the application layer properly.
Is what I am working on at the moment.
----------------------------------------------------------------------------------------------------------
- Will update later as I work on it. - 06 / 09 / 2024
Until then - Jeers for Cheers | vampeyer |
1,882,409 | Need Help With Z-Index/Positiong | I created a short video explaining my issue. If anyone can help. Please let me... | 0 | 2024-06-09T22:44:01 | https://dev.to/torenrob/need-help-with-z-indexpositiong-pf3 | react, help, styling, newbie | I created a short video explaining my issue. If anyone can help. Please let me know.
https://www.youtube.com/watch?v=ySAeUFbw5fo
You can reach me on twitter @codingDr3ams or Instagram @holyhippiedad. I'll also be watching this post.
| torenrob |
1,882,406 | Polling in React | In today's tech space of web development, real-time data updates are important for creating engaging... | 0 | 2024-06-09T22:37:18 | https://dev.to/tangoindiamango/polling-in-react-3h8a | javascript, react, webdev, programming | In today's tech space of web development, real-time data updates are important for creating engaging and responsive user experiences. Whether you're building a dashboard, a chat application, a server interface, or a stock trading platform, you often need to check the status of a server or a process at regular intervals. This process is known as polling, and it's a common technique used over socket connections.
Just before we see how Polling works, we should identify Why Polling?
We can describe polling as a straightforward approach to fetching data from the server periodically. Unlike more advanced techniques like WebSocket or Server-Sent Events (SSE), polling doesn't require complex setup or server-side configurations which makes it a reliable way to get the job done, especially in scenarios where you need to retrieve data from a third-party API or a legacy system that doesn't support real-time updates.
A good sample where polling can be useful will be:
When building a weather application that displays the current temperature, humidity, and wind speed for a specific location. You might want to poll the weather API every 5 minutes to ensure that your users have access to the latest weather information.
We can also use polling when we want to support older browsers or have limited server resources, and we can't utilize WebSocket for real-time chat.
Let's briefly look at how we can use Polling in React:
In our problem statement let's assume we have a web application where users can start and stop a server (e.g. something like npm run dev or python manage.py runserver). We want to provide real-time feedback on the server status whether it's running, creating, or stopping. Polling is an effective way to achieve this.
```
const pollingFunc = async () => {
//fetch server data
const data = await fetchServerData("GET");
switch (data?.status) {
case "stopped":
setStatus({ stopped: true });
break;
case "running":
if (data?.url) {
setData(data);
setStatus({ running: true });
toast.success("Server is running");
}
break;
case "creating":
setStatus({ creating: true });
break;
case "stopping":
setStatus({ stopping: true });
break;
default:
handleError(data)
toast.error(`An error occured, ${data.error_message}`)
break;
}
};
```
Addressing the asynchronous pollingFunc above, it fetches data from the server using the fetchServerData function. Based on the server's response, different cases are handled, such as updating the application state, displaying toast notifications, or stopping the polling process.
The key to implementing polling in React is to use the setInterval function, which allows you to execute a function repeatedly at a specified interval. Here's an example of how you might use setInterval to call the pollingFunc every 5 seconds:
```
import React, { useEffect, useRef } from 'react';
const MyComponent = () => {
const pollingRef = useRef(null);
useEffect(() => {
const startPolling = () => {
pollingRef.current = setInterval(() => {
pollingFunc();
}, 5000); // Poll every 5 seconds
};
startPolling();
return () => {
clearInterval(pollingRef.current);
};
}, []);
};
```
We utilize the useRef hook to create a mutable(changeable) reference to the interval ID returned by setInterval. This allows us to clear the interval when the component unmounts, preventing memory leaks. The useEffect hook is used to start the polling process when the component mounts. The startPolling function initializes the interval and calls pollingFunc every 5 seconds. The cleanup function returned by useEffect ensures that the interval is cleared when the component unmounts.
And that's how polling works, quite straightforward no tweaks or headaches, but one important consideration when implementing polling in React is how to update the component's state. Updating states within the polling function would leave you wondering what's wrong with my code? and this is because our setInterval runs in a different event loop. The setInterval callback captures the state at the time it was created and does not reflect subsequent updates to the state, so at that instance, our state doesn't know about any update. To handle this situation effectively, one can use a Ref Hook to keep track of the latest state OR manage the state updates within a useEffect. Another approach is to pass the state and the setState function as parameters to the polling function.
Let's update our above example to include the stopping state:
```
const pollingFunc = async (stoppingState: boolean) => {
switch (data?.status) {
case "stopped":
setStatus({ stopped: true });
if (stoppingState) {
toast.success("Server stopped");
}
setStatus({ ...defaultState });
// let's assume we have a defaultState of all possible
// status to be false here, so we can just spread it
break;
// we have the same prev code as earlier
}
```
```
//Updating our UseEffect
const MyComponent = () => {
const pollingRef = useRef(null);
useEffect(() => {
const startPolling = (stoppingState) => {
pollingRef.current = setInterval(() => {
pollingFunc(stoppingState);
}, 5000); // Poll every 5 seconds
};
startPolling(false);
return () => {
clearInterval(pollingRef.current);
};
}, []);
};
```
Just to display this in action let's create a stopServer function
```
const stopServer = async () => {
setStatus({ ...status, loading: true });
await fetchServerData("DELETE");
setStatus({ ...status, loading: false, stopping: true });
setData(null);
startPolling(true);
};
```
Implementing polling in React is a straightforward approach to fetching data from the server at regular intervals. However, it's essential to consider the appropriate scenarios and the potential implications of polling on performance, server load, and user experience.
Depending on the problem at hand, we can figure out the best and cleanest way to handle polling. In cases where real-time updates are crucial, and server resources are available, utilizing WebSocket might be a better choice as they establish a bidirectional communication channel between the client and the server, allowing for efficient and immediate data updates without the need for continuous polling.
It's important to remember that as software engineers, we need to take into account the best tool for the job at the right time. Polling is a valuable technique, but it's not a one-size-fits-all solution. Carefully evaluate your application's requirements, performance needs, and server resources before deciding on the appropriate approach for handling real-time data updates.
Please share your thoughts, experiences, and any additional insights you might have on implementing polling or alternative approaches to real-time data updates in React applications. Also, stay tuned to see how we would implement polling in Angular. | tangoindiamango |
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1,882,402 | Hello to all Developers | A post by MD.MAHFUZUR RAHMAN SIAM | 0 | 2024-06-09T22:26:31 | https://dev.to/siam_khan/hello-to-all-developers-5gh5 | siam_khan | ||
1,882,559 | Handling duplicate events from Stripe in your webhook endpoint | In my recent post, detailing how I handle order fulfillment for my Stripe integration, I missed an... | 0 | 2024-06-10T04:00:13 | https://www.duncanmackenzie.net/blog/handling-duplicate-stripe-events/ | webdev, coding, stripe, azure | ---
title: Handling duplicate events from Stripe in your webhook endpoint
published: true
date: 2024-06-09 22:13:27 UTC
tags: WebDevelopment,Coding,Stripe,Azure
canonical_url: https://www.duncanmackenzie.net/blog/handling-duplicate-stripe-events/
---
In my recent post, [detailing how I handle order fulfillment for my Stripe integration](https://www.duncanmackenzie.net/blog/order-fulfillment/), I missed an important part of reacting to Stripe webhooks. The documentation [explains that your endpoint may be called multiple times for a single event](https://docs.stripe.com/webhooks#handle-duplicate-events), but I don’t handle that in my code.
> It also points out the **ordering** of events is not guaranteed, but that doesn’t matter in my case since I’m only handling one event type.
## The issue with duplicate events
Every time I receive an event, my original implementation would push a new message into a queue and the order fulfillment would continue. If I receive a duplicate `CheckoutSessionCompleted` event, it isn’t a terrible problem; a customer might receive multiple emails from me with their photo. Each one would be a slightly different link though and, in addition to looking sloppy, it could cause them to worry they were charged multiple times. In many scenarios, this could be a larger problem; shipping two physical items, or signing them up for multiple digital purchases.
For all of those reasons, I’ve updated my code. Now, when I receive an event, I check a CosmosDB container to see if I’ve handled this event ID before.
(from [Functions.cs](https://github.com/Duncanma/PhotoWebhooks/blob/main/Functions.cs))
```csharp
OrderData data = await CreateOrderData();
bool exists =
await data.checkForExisting("checkoutComplete",
order.SessionID);
if (!exists)
{
await queueClient.SendMessageAsync(message);
}
else
{
log.LogInformation(
$"Duplicate Event: {order.EventID}");
}
await data.insertLogItem("checkoutComplete",
order.SessionID, order.EventID, exists);
```
If so, I skip pushing a message into the incoming order queue and return a 200 OK result. If I **haven’t** seen this event ID, I go ahead and push the message in and then log (`insertLogItem`) that I processed this event. I log when I see a duplicate as well, just in case I’m interested in the future.
This required adding a data storage class to my project, where I encapsulated all the initialization of Cosmos DB and handling both the check and insert steps.
(from [OrderData.cs](https://github.com/Duncanma/PhotoWebhooks/blob/main/OrderData.cs))
```csharp
public async Task insertLogItem(string functionName,
string sessionID, string eventID, bool duplicate)
{
LogItem item = new LogItem()
{
function = functionName,
checkoutSessionID = sessionID,
eventID = eventID,
duplicate = duplicate
};
await this.c_functionLog.CreateItemAsync<LogItem>(
item, new PartitionKey(functionName));
}
public async Task<Boolean> checkForExisting(
string functionName,
string checkoutSessionID)
{
string query = "SELECT c.id " +
"FROM c WHERE c.checkoutSessionID =" +
"@checkoutSessionID AND " +
"c.function=@functionName";
QueryDefinition q = new QueryDefinition(query)
.WithParameter("@checkoutSessionID", checkoutSessionID)
.WithParameter("@functionName", functionName);
using (FeedIterator<LogItem> feedIterator
= this.c_functionLog.GetItemQueryIterator<LogItem>(q))
{
if (feedIterator.HasMoreResults)
{
FeedResponse<LogItem> response
= await feedIterator.ReadNextAsync();
if (response != null && response.Count > 0)
{
return true;
}
}
}
return false;
}
```
This is not a perfect solution.
My Azure Function could be running on multiple threads (and/or servers), handling multiple requests at once, and therefore potentially posting duplicate messages.
I could avoid this by using a semaphore/locking mechanism, so that checking for an existing log entry, pushing the incoming order message, and adding a new log entry all happened as an isolated transaction. Doing this would reduce my Function’s ability to handle a high load of requests though, and while I don’t expect that to matter in my specific case, it seems like a bad pattern that someone may copy.
Instead, I’m going to go with a ‘belt and suspenders’ model (multiple preventative methods to avoid an issue), by adding another similar check to the second and third functions.
> I could also force these functions to process messages one at a time through some [configuration options](https://learn.microsoft.com/en-us/azure/azure-functions/functions-bindings-storage-queue?tabs=isolated-process%2Cextensionv5%2Cextensionv3&pivots=programming-language-csharp#host-json). This would reduce their scalability, as discussed for the first function, but that is less of an issue for these stages in the order fulfillment.
Having written the **check** and **insert** as discrete functions makes it easy to repeat the pattern in each of the two other methods.
```csharp
OrderData data = await CreateOrderData();
bool exists = await data.checkForExisting(
"processOrder", order.SessionID);
if (exists)
{
log.LogInformation(
$"Duplicate Event: {order.SessionID}");
return;
}
//do all the work
await data.insertLogItem(
"processOrder", order.SessionID,
order.EventID, exists);
```
> Note that I had planned this in my head from the start of making these changes, which was why I used the function name as the partition key, and then the appropriate unique identifier as the id.
After adding these checks to the other functions, I will remove them from the initial HTTP handler. My goal with that webhook endpoint is to return as fast as possible, these data calls are quick but they still add time. Adding multiple entries to the incoming Order queue doesn’t have any negative impact, as long as the `processOrder` function knows to skip duplicates.
## Wrapping up
These modifications have the positive side effect of giving me a nice, easy to read, log file of all the function executions.
As you build out your own webhook handlers, refer back to [the Stripe webhook documentation](https://docs.stripe.com/webhooks) for notes on this and other implementation details to be aware of. | duncanma |
1,877,248 | How to authenticate a Spotify User in next.js 14 using NextAuth | In this article, we'll walk you through authenticating a user with their Spotify account in Next.js... | 0 | 2024-06-09T22:08:00 | https://dev.to/matdweb/how-to-authenticate-a-spotify-user-in-nextjs-14-using-nextauth-5f6i | spotifyapi, nextjs, nextauth, typescript | In this article, we'll walk you through authenticating a user with their Spotify account in Next.js 14. This method is compatible with Next.js 13 as well, so you're covered! 🎉
We'll be using the Spotify Provider along with NextAuth, a powerful authentication library for Next.js applications. No worries if you're new to this; I'll guide you through each step! 😊
## Setting Up Next.js
First, let's create a new Next.js 14 project. Open your terminal and run the following command in the directory where you want to create your project:
```bash
npx create-next-app@latest
```
Follow the prompts to name your app. For this example, I'll be using TypeScript, but feel free to stick with JavaScript if you prefer.
Next, ensure all packages are installed by running:
```bash
npm install
```
### Installing NextAuth
Next, we need to install the NextAuth dependencies. NextAuth is an open-source authentication library for Next.js applications that makes it easy to add authentication to your project.
Run the following command to install NextAuth:
```bash
npm install next-auth
```
### Running the Local Instance
To see your project live and start editing it, use this command:
```bash
npm run dev
```
This will likely load your application at http://localhost:3000 in your browser.
## Spotify API credentials
To integrate Spotify authentication, you'll need to obtain API credentials from Spotify. Follow these steps to set it up:
### Accessing Spotify for Developers
1. Go to the Spotify for Developers page here: https://developer.spotify.com/
2. Log in with your Spotify account.
3. Navigate to the Spotify Developer Dashboard here: https://developer.spotify.com/dashboard
### Creating a New App
Click on "_Create App_" and fill out the form that appears.
This form requires details about your app, such as its name and description. Creating an app in the Spotify Developer Dashboard allows you to obtain the necessary credentials to interact with the Spotify API.
### Providing Redirect URIs
In the form, you'll need to specify the redirect URI for your application in the "Website" field. This is where Spotify will send the user after authentication. For local development, use the following URL:
```http
http://localhost:3000/api/auth/callback/spotify
```
> When you deploy your app, remember to update this URL and URIs using your production URL.
### Selecting Web API
Indicate that your app will be using the "_Web API_" by selecting this option in the form.
Click **"Save"** to create your app.
## Retrieving Spotify Credentials
After creating your app, Spotify will provide you with essential credentials: the `Client ID` and `Client Secret`. These credentials are crucial for interacting with the Spotify API. Take them from here:
### Setting Up Environment Variables
Go back to your Next.js project and create a `.env.local` file in the root directory **(not inside the src/ folder)**. Add your Spotify credentials to this file:
.env.local
```env
SPOTIFY_CLIENT_ID=your_spotify_client_id
SPOTIFY_CLIENT_SECRET=your_spotify_client_secret
```
> **VERY IMPORTANT**
> If you deploy your app, you **MUST** provide two extra env variables. If you don't provide them, production will throw an error.
```
NEXTAUTH_URL=url_of_your_app
NEXTAUTH_SECRET=hash_key
```
> You can execute this command on your terminal to generate a `hash_key`
```
openssl rand -base64 32
```
Here the link to the error in production: [https://next-auth.js.org/configuration/options#secret](https://next-auth.js.org/configuration/options#secret )
## Setup Authentication with NextAuth
Now, let's configure authentication to seamlessly integrate the Spotify Provider with NextAuth technology, utilizing the Spotify API credentials stored in the `.env.local` file.
### Creating Authentication Routes
1. Inside your project directory **(whether it's src/ or not)**, create the following path `src/app/api/auth/[...nextauth]/`.
2. Create a file named `route.ts` in this directory.
### Configuration in route.ts
In the `route.ts` file, set up NextAuth to authenticate users with the `SpotifyProvider`. Additionally, include callbacks to retrieve the `refresh-token` from the session object for further functionality. Like this:
route.ts
```javascript
import NextAuth from "next-auth/next";
import { type NextAuthOptions } from "next-auth";
import SpotifyProvider from 'next-auth/providers/spotify';
const options: NextAuthOptions = {
providers: [
SpotifyProvider({
authorization:
'https://accounts.spotify.com/authorize?scope=user-read-email,playlist-read-private,playlist-modify-private,playlist-modify-public',
clientId: process.env.SPOTIFY_CLIENT_ID || '',
clientSecret: process.env.SPOTIFY_CLIENT_SECRET || '',
}),
],
callbacks: {
async jwt({ token, account }) {
if(account){
token.access_token = account.access_token;
}
return token;
},
async session({ session, token }) {
return {
...session,
token
};
},
}
}
const handler = NextAuth(options);
export { handler as GET, handler as POST };
```
## Wrap App in the Session Provider
The next step involves creating a `Session Provider Wrapper` to encompass the entire application with the authentication service.
### Creating AuthProvider Component
Create a file named `AuthProvider.tsx`.
In the `AuthProvider.tsx` file, use the provider to create an element that wraps its children. This component will later be added to the `layout.tsx` file inside the `<body>` tag to encompass the entire application.
AuthProvider.tsx
```javascript
'use client'
import React from 'react';
import { SessionProvider } from "next-auth/react";
function AuthProvider({ children }: { children: React.ReactNode }) {
return (
<SessionProvider>
{children}
</SessionProvider>
)
}
export default AuthProvider;
```
### Implementation in layout.tsx
In the `layout.tsx` file, add the `AuthProvider.tsx` component to wrap the application. This approach is necessary for **client-side rendering**, as the provider should be in the `layout.tsx` document, which cannot utilize **client-side rendering** directly.
layout.tsx
```javascript
import type { Metadata } from "next";
import { Inter } from "next/font/google";
import "./globals.css";
import AuthProvider from "./AuthProvider";
const inter = Inter({ subsets: ["latin"] });
export const metadata: Metadata = {
title: "Create Next App",
description: "Generated by create next app",
};
export default function RootLayout({
children,
}: Readonly<{
children: React.ReactNode;
}>) {
return (
<html lang="en">
<body className={inter.className}>
<AuthProvider>
{children}
</AuthProvider>
</body>
</html>
);
}
```
This setup integrates the authentication service into the application by creating an external component (`AuthProvider.tsx`) for **client-side rendering** and then adding it to the `layout.tsx` file.
## Create the User Interface
Next, we'll develop the user interface, which could look something like this:
page.tsx
```javascript
'use client'
import { useSession } from "next-auth/react";
import { signIn, signOut } from "next-auth/react";
export default function Home() {
const { data: session } = useSession();
console.log(session);
if (session) {
return (
<div className='p-6'>
<p className='text-white font-normal text-xl mt-5 mb-2'>Signed In as</p>
<span className='bold-txt'>{session?.user?.name}</span>
<p className='opacity-70 mt-8 mb-5 underline cursor-pointer' onClick={() => signOut()}>Sign Out</p>
</div>
)
} else {
return (
<button onClick={() => signIn()} className='shadow-primary w-56 h-16 rounded-xl bg-white border-0 text-black text-3xl active:scale-[0.99] m-6'>Sign In</button>
)
}
}
```
In the `page.tsx` file, we'll start by extracting the session object using the `useSession()` function, which, along with the `signIn()` and `signOut()` methods, is part of the NextAuth features. The session object provides us with user information from the authentication provider, in this case, Spotify. The `signIn()` and `signOut()` methods trigger the respective processes. By calling them, the authentication setup we've already configured will be executed.
If you've followed each step provided here, you shouldn't encounter any errors, and your project should successfully authenticate users with their Spotify accounts. 🥳
You can also check out an application that utilizes this exact same technologies [Jamming](https://jamming-sooty.vercel.app/). 😎
Ande here the Github repository for the code: [https://github.com/Matdweb/spotify-api-tutorial/tree/how-to-authenticate-a-spotify-user-in-next.js-14-using-next-auth](https://github.com/Matdweb/spotify-api-tutorial/tree/how-to-authenticate-a-spotify-user-in-next.js-14-using-next-auth)
>NOTE:
>If you need a nice interface but have no time. I provide you with this code with a simple but smooth interface:
page.tsx
```javascript
'use client'
import { useSession } from "next-auth/react";
import Image from "next/image";
import { signIn, signOut } from "next-auth/react";
export default function Home() {
const { data: session } = useSession();
if (session) {
return (
<div className='max-w-[19rem] h-[22rem] rounded-[2rem] border-4 border-solid border-white flex justify-around items-center flex-col flex-nowrap mt-10 ml-10 mb-16'>
<div className='mt-8 w-full flex flex-col flex-nowrap justify-around items-center'>
<Image
src={'https://spotiy-playlist-retriever-experimental.vercel.app/_next/static/media/user_img.6db01878.svg'}
width={160}
height={160}
alt='Defualt user image'
/>
<p className='text-white font-normal text-xl mt-5 mb-2'>Sign In as</p>
<span className='bold-txt'>{session?.user?.name}</span>
</div>
<p className='opacity-70 mt-8 mb-5 underline cursor-pointer' onClick={() => signOut()}>Sign Out</p>
</div>
)
} else {
return (
<div className='max-w-[19rem] h-80 rounded-[2rem] border-4 border-solid border-white flex justify-around items-center flex-col flex-nowrap mt-10 ml-10'>
<Image
src={'https://spotiy-playlist-retriever-experimental.vercel.app/_next/static/media/sad_emoji.41405e6f.svg'}
width={160}
height={150}
alt='sad emoji'
/>
<button onClick={() => signIn()} className='shadow-primary w-56 h-16 rounded-xl bg-white border-0 text-black text-3xl active:scale-[0.99]'>Sign In</button>
</div>
)
}
}
```
| matdweb |
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