Best Node JS training in Chennai

Module 1: Introduction to Node.js

Objective: Understand what Node.js is and how it works.

• What is Node.js?

• Node.js vs traditional backend

• Node.js architecture (Event Loop, Non-blocking I/O)

• Installing Node.js & npm

• Running your first Node.js script

Module 2: Node.js Core Modules

Objective: Work with built-in Node.js modules.

• fs (File System)

• path

• http

• url

• os

• events & EventEmitter

• process

Module 3: Modules and npm

Objective: Understand modular programming in Node.

• Creating custom modules

• Exporting and requiring modules

• npm init and package.json

• Installing packages (local, global)

• Semantic versioning

• Using npx

Module 4: Building Web Servers

Objective: Create basic web servers using core http module.

• Creating a simple HTTP server

• Handling routes manually

• Sending responses (HTML, JSON)

• Status codes and headers

Module 5: Asynchronous Programming

Objective: Learn async programming in Node.js.

• Callbacks

• Promises

• async/await

• Error handling

• Using util.promisify

Module 6: File System & Streams

Objective: Handle file operations and streams.

• Reading/writing files (fs.readFile, fs.writeFile)

• Working with JSON files

• Understanding streams

• Creating readable & writable streams

• Piping and chaining streams

Module 7: Express.js Basics

Objective: Use Express.js to simplify web development.

• What is Express.js?

• Installing and setting up Express

• Creating routes (GET, POST, PUT, DELETE)

• Route parameters & query strings

• Serving static files

Module 8: Middleware & REST APIs

Objective: Handle middleware and build RESTful APIs.

• What is middleware?

• Creating and using custom middleware

• body-parser, cors

• RESTful route design

• Sending JSON responses

• Status codes & response structure

Module 9: Connecting to Databases

Objective: Store and retrieve data from a database.

Option 1: MongoDB with Mongoose

• Introduction to NoSQL & MongoDB

• Connecting to MongoDB (local/cloud)

• Defining schemas and models

• CRUD operations with Mongoose

Option 2 (Optional): MySQL with mysql2

• Connecting to MySQL

• Running queries

• Using prepared statements

Module 10: Authentication & Authorization

Objective: Secure your Node.js APIs.

• User registration & login

• Password hashing with bcrypt

• Generating JWT tokens

• Middleware for protected routes

Module 11: Testing & Debugging

Objective: Test Node.js applications effectively.

• Using console.log and debug

• Error handling best practices

• Writing unit tests with Mocha/Chai or Jest

• Using Postman for API testing

Module 12: Deployment & Best Practices

Objective: Prepare Node apps for production.

• Environment variables with dotenv

• Process management with pm2

• Building a production build

• Deployment on platforms (Render, Heroku, DigitalOcean)

• Folder structure and coding conventions