Node.js Backend Guide

Node.js Basics — Complete Beginner's Guide to JavaScript on the Server

Learn Node.js from scratch: what it is, setup, REPL, npm, package.json, CommonJS vs ES modules, global objects, process, console, and writing your first server.

Node.js Async — Callbacks, Promises, Async/Await & the Event Loop

Master asynchronous Node.js: callbacks, promises, async/await, event loop phases, error handling patterns, avoiding callback hell, and writing non-blocking code.

Node.js Core Modules — File System, HTTP, Streams & EventEmitter

Learn Node.js built-in modules: HTTP server creation, File System (fs/promises), Path, OS, Events (EventEmitter), Streams, Buffer, Crypto, Readline, and Util.

Express.js Guide — Complete Web Framework for Node.js

Learn Express.js: setup, routing, middleware, error handling, REST API development, template engines, static files, environment configuration, and security best practices.

Node.js Database — MySQL & MongoDB Integration Guide

Learn Node.js database integration: MySQL CRUD with mysql2, MongoDB with native driver and Mongoose ODM, connection pooling, schema design, and production best practices.

Node.js Advanced — Clustering, Security, WebSockets & Deployment

Master advanced Node.js: cluster module for multi-core, worker threads for CPU tasks, security with Helmet/Rate Limiting, WebSocket real-time chat, testing with Jest, and Docker deployment.

Koa.js Guide — Modern Node.js Framework by Express Creators

Learn Koa.js: async middleware with generator-like flow, context object, routing with @koa/router, error handling patterns, and building modern web applications.

Node.js API Reference & Cheatsheet

Complete Node.js reference: core modules, npm commands, async patterns, Express.js quick reference, database cheatsheet, security best practices, and deployment commands.