Welcome to the Node.js section of this guide! Node.js is a powerful, open-source runtime that lets you execute JavaScript code outside the browser. Itβs designed for building scalable network applications and is the backbone of modern web backends and full-stack JavaScript development. βοΈπβ‘
With a fast event-driven architecture and non-blocking I/O, Node.js is perfect for creating real-time apps, RESTful APIs, command-line tools, and more.
This guide will take you from understanding how Node works under the hood to building advanced backends and APIs. π²π οΈπ‘
Get started with the core fundamentals of Node.js:
- What is Node.js?
- Installing Node.js & npm
- Understanding Node.js Architecture
- Running Your First Node Script
- Global Objects in Node.js (
__dirname,__filename,require,module) - Node.js REPL
- The Node.js Event Loop (Basics)
- Core Modules:
fs(File System)pathhttposevents
- Creating a Simple HTTP Server
- Understanding CommonJS Modules (
require,module.exports) - npm vs npx
- Creating & Using Your Own Modules
- Basic Package.json Usage
These topics build up practical backend development knowledge:
- File System Operations (async vs sync)
- Working with Buffers and Streams
- Understanding Asynchronous Programming
- Callback Functions
- Promises
async/await
- Process & Environment Variables
- Using External Packages (chalk, lodash, dotenv, etc.)
- Nodemon and Hot Reloading
- Event Emitters (Advanced)
- Middleware Concept
- Express.js Basics (for routing, middleware)
- Creating RESTful APIs with Express
- CRUD Operations
- Handling HTTP Methods & Status Codes
- Error Handling Middleware
- Postman for API Testing
- Connecting to Databases (MySQL, MongoDB)
- Serving Static Files
- CORS & Security Headers
- Deployment Basics (Render, Railway, etc.)
Take your Node.js skills to the senior-dev level:
- Node.js Event Loop Deep Dive
- Clustering & Worker Threads
- Streams: Readable, Writable, Transform
- Child Processes
- File Upload Handling (with
multer) - JWT Authentication
- OAuth Integration (Google, GitHub, etc.)
- Session vs Token Auth
- Express.js Routers & Controllers Architecture
- MVC Pattern in Node
- Using ORMs/Query Builders (Prisma, Sequelize, Knex)
- Performance Optimization & Profiling
- Rate Limiting & Throttling
- Using Redis for Caching & Sessions
- WebSockets with
wsorsocket.io - Server-Side Rendering Basics (with template engines like EJS/Pug)
- CI/CD Pipelines (GitHub Actions, etc.)
- Writing Unit & Integration Tests (Mocha, Chai, Supertest)
- Error Logging & Monitoring (Winston, Morgan, Sentry)
- Environment-Based Config Management
- Securing Node.js Apps (Helmet, XSS, CSRF)
- Production Best Practices (PM2, Load Balancing)
- Understanding Node.js Memory Leaks & Garbage Collection