🚀 The Complete Node.js Guide — Beginner to Advanced

A deep, chapter-wise reference for mastering Node.js concepts. Every concept ships with a concise definition, interview Q&A, and code. Based on the Namaste Node.js series by Akshay Saini.

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📑 Table of Contents

🎬 Season 1 — Node.js Core

Part I — Node.js Fundamentals & Modules

#	Chapter	Key Concepts
1	Introduction to NodeJs	What is Node.js, History, Use cases, Why Node.js, V8 Engine introduction
2	JS on the Server	Browser vs Server JS, Global object, Running JS files via terminal
3	Writing First Code	Creating and executing JS files in Node.js, REPL, Basic console logs
4	module.export & require	CommonJS modules, module.exports, require() function, local vs core modules, module caching

Part II — Node.js Architecture & Internals

#	Chapter	Key Concepts
5	Diving into NodeJs Repo	Exploring Node.js source code, C++ bindings, core modules implementation
6	libuv & async IO	What is libuv, Asynchronous I/O, Event-driven architecture, Non-blocking I/O
7	sync, async, setTimeout Zero-Code	Synchronous vs Asynchronous code, Call stack, setTimeout execution flow in Node.js
8	Deep dive into v8 JS Engine	V8 architecture, JIT compilation, Garbage collection, Ignition and TurboFan
9	libuv and event loop	Node.js Event Loop phases (Timers, Pending Callbacks, Idle/Prepare, Poll, Check, Close Callbacks), Microtask queues
10	Thread pool in libuv	UV_THREADPOOL_SIZE, Worker threads for heavy tasks (Crypto, File System, DNS, Zlib)

Part III — Servers & Databases

#	Chapter	Key Concepts
11	Creating the Server	http module, createServer, Request and Response objects, listening on ports
12	Databases SQL and NoSQL	SQL vs NoSQL differences, Document-based vs Relational databases, Use cases for MongoDB vs PostgreSQL
13	Creating a database & mongodb	Setting up MongoDB, Collections and Documents, Connecting Node.js to MongoDB using native driver/mongoose

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🎬 Season 2 — Building a Real Project

Part IV — Project Setup & Architecture

#	Chapter	Key Concepts
14	Microservices vs Monolith - How to build a Project	Monolithic vs Microservices architecture, Pros and Cons, Choosing architecture for projects
15	Features HLD LLD and Planning	High Level Design (HLD), Low Level Design (LLD), System design basics, Project scoping

Part V — Express & Middleware

#	Chapter	Key Concepts
16	Creating Our Express Server	Setting up Express.js, app.listen(), Express vs Core http, Basic setup
17	Routing and Request Handlers	Express Router, Route parameters (req.params), Query strings (req.query), HTTP Methods (GET, POST, PUT, DELETE)
18	Middlewares and Error Handlers	app.use(), Next function (next()), Global middlewares, Error-handling middlewares (err, req, res, next)

Part VI — Data Modeling & APIs

#	Chapter	Key Concepts
19	Database Schema Models and Mongoose	Mongoose introduction, Schemas, Models, mongoose.connect(), Default values
20	Diving into APIs	RESTful API principles, CRUD operations, Sending JSON responses, Status codes
21	Data Sanitization and Schema Validations	Validating inputs, Mongoose built-in validators, Custom validators, Sanitizing request payloads

Part VII — Security & Authentication

#	Chapter	Key Concepts
22	Encrypting Passwords	bcrypt, Hashing vs Encryption, Salt rounds, Mongoose pre('save') hooks
23	Authentication, JWT and Cookies	JSON Web Tokens (JWT), Access vs Refresh tokens, Cookie parsing, Auth middlewares

Part VIII — Advanced APIs, Queries & Pagination

#	Chapter	Key Concepts
24	Diving into the APIs and Express Router	Express Router deep dive, separating routes, modular API structure
25	Logical DB Query and Compound Indexes	MongoDB logical operators ($and, $or), Compound Indexes, query optimization
26	ref, Populate and Thought Process	Mongoose populate(), referencing other collections, API design thought process
27	Building Feed API and Pagination	skip() and limit(), implementing pagination, building scalable feed endpoints

Part IX — Frontend & UI Development

#	Chapter	Key Concepts
28	DevTinder UI Part-I	Frontend setup, React/Vite basics, UI architecture, initial project layout
29	DevTinder UI Part-II	Routing in React, state management, building core components
30	DevTinder UI Part-III	API integration, fetching data from backend, handling loading/error states
31	DevTinder UI Part-IV	User authentication on frontend, protected routes, JWT storage
32	DevTinder UI Part-V	Polishing UI, advanced state, final features and end-to-end integration

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🎬 Season 3 — Production & Deployment

Part X — Cloud & Deployment

#	Chapter	Key Concepts
33	Launching AWS Instance and deploying frontend	AWS EC2 basics, security groups, SSH access, building and deploying React app
34	Nginx and backend Node App Development	Reverse proxy with Nginx, PM2 process manager, running Node.js in background
35	Adding a Custom Domain Name	DNS records (A/CNAME), Route53/Cloudflare, configuring Nginx for custom domain

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🎉 You've completed the Node.js journey!

Generated with ❤️ for Node.js developers — happy coding!