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Your Step-by-Step Guide to Becoming a Node.js Expert
https://www.udemy.com/course/mastering-nodejs-from-beginner-to-backend-pro/
1. NodeJS Architecture Event-Driven Architecture: Understanding how NodeJS handles asynchronous operations using an event loop. Single Threaded Nature: Learn how NodeJS manages multiple tasks concurrently despite being single-threaded. Non-blocking I/O: How NodeJS uses non-blocking I/O operations to handle multiple requests efficiently. 2. Core Modules HTTP Module: Creating HTTP servers, handling requests and responses. File System (fs) Module: Reading and writing files, managing directories. Path Module: Working with file and directory paths. Events Module: Creating and handling custom events. Stream Module: Handling large data sets by processing data in chunks. OS Module: Interacting with the operating system, gathering system information. Util Module: Utility functions, including deprecating methods and debugging. 3. npm (Node Package Manager) Package Management: Installing, updating, and removing packages. Creating and Publishing Packages: Building your own NodeJS packages and publishing them to npm. Semantic Versioning: Understanding versioning in npm and how to use it. 4. Asynchronous Programming Callbacks: The foundation of async programming in NodeJS. Promises: Handling asynchronous operations more elegantly with .then() and .catch(). Async/Await: Writing asynchronous code that looks synchronous for better readability. Event Loop: In-depth understanding of how the event loop processes asynchronous callbacks. Timers: Using setTimeout, setInterval, and setImmediate. 5. Express.js Framework Setting Up a Server: Creating a basic server with Express. Routing: Defining routes for handling HTTP requests. Middleware: Implementing and understanding the role of middleware in request processing. Error Handling: Centralized error handling in Express applications. Template Engines: Using engines like EJS, Pug, or Handlebars to render dynamic content. 6. Web APIs and RESTful Services Creating REST APIs: Building RESTful services with Express.js or other frameworks. CRUD Operations: Implementing Create, Read, Update, Delete operations in your API. Authentication: Securing APIs with JWT (JSON Web Tokens), OAuth, or other authentication methods. API Documentation: Using tools like Swagger to document your API. 7. Database Integration SQL Databases: Using libraries like pg for PostgreSQL or mysql2 for MySQL. NoSQL Databases: Integrating with MongoDB using Mongoose. ORMs: Working with ORMs like Sequelize for SQL databases. Database Migrations: Managing database schema changes with migration tools. 8. Real-time Applications WebSockets: Using libraries like socketIO to build real-time applications like chat apps. Server-Sent Events (SSE): Implementing unidirectional server-to-client updates. Polling: Understanding long polling as an alternative to WebSockets. 9. Security Data Validation: Ensuring incoming data is valid and secure using libraries like Joi. Input Sanitization: Preventing injection attacks by sanitizing input. Authentication and Authorization: Implementing secure authentication mechanisms. HTTPS: Securing your NodeJS server with HTTPS. Rate Limiting: Protecting your APIs from brute-force attacks with rate limiting. 10. Testing Unit Testing: Writing tests for individual units of code using frameworks like Mocha, Jest, or Jasmine. Integration Testing: Testing the interaction between different parts of your application. Test-Driven Development (TDD): Writing tests before code to ensure functionality. Mocking and Stubbing: Simulating external services or functions in tests. 11. Deployment and Scaling Environment Management: Using .env files and environment variables for configuration. Process Management: Using PM2 or forever to manage NodeJS processes in production. Load Balancing: Distributing traffic across multiple instances of your application. Scaling: Horizontal and vertical scaling techniques for NodeJS applications. Containerization: Using Docker to containerize your NodeJS application. CI/CD Pipelines: Automating the deployment process using tools like Jenkins, GitHub Actions, or CircleCI. 12. Working with Streams and Buffers Readable and Writable Streams: Understanding how to process data piece by piece. Pipes: Connecting streams together to pass data from one stream to another. Transform Streams: Manipulating data as it is read or written. Buffers: Handling binary data directly in NodeJS. 13. Error Handling and Debugging Error Handling Best Practices: Using try...catch and centralized error handling middleware. Logging: Implementing logging using libraries like Winston or Bunyan. Debugging: Using NodeJS built-in debugger or Chrome DevTools for debugging. 14. Build Tools and Task Runners Gulp: Automating tasks like minification, compilation, and linting. Webpack: Module bundler for handling project assets. ESLint: Enforcing coding standards and style guidelines. 15. Microservices and API Gateways Microservice Architecture: Designing and implementing microservices with NodeJS. API Gateway: Managing multiple microservices behind a unified interface using tools like YARP or NGINX. Inter-service Communication: Using protocols like HTTP, gRPC, or message queues. 16. Performance Optimization Profiling: Using tools like NodeJS Profiler and Clinic.js to identify performance bottlenecks. Caching: Implementing caching strategies with Redis or in-memory caches. Clustering: Utilizing NodeJS's clustering module to take advantage of multi-core systems. 17. Advanced Topics Child Processes: Running multiple processes from a single NodeJS script. Worker Threads: Leveraging multi-threading in NodeJS for CPU-intensive tasks. Serverless: Deploying NodeJS applications in a serverless architecture using AWS Lambda, Google Cloud Functions, etc.
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