Node JS

1. Introduction to Node.js

What is Node.js
How Node.js works
V8 JavaScript Engine
Event-driven architecture
Non-blocking I/O
Node.js vs Browser JavaScript
When to use Node.js
Course project overview

2. Setting Up the Development Environment

Installing Node.js and npm
Understanding npm and npx
Using Visual Studio Code
Creating a Node.js project
package.json
Installing dependencies
Development workflow

3. Node.js Fundamentals

Running JavaScript with Node.js
Global objects
Process object
Console methods
Timers
Environment variables
Command-line arguments

4. Modules

CommonJS modules
ES Modules (ESM)
Import and Export
Creating custom modules
Using third-party packages
Module best practices

5. File System (FS Module)

Reading files
Writing files
Appending files
Deleting files
Renaming files
Working with directories
Streams vs file operations

6. Path Module

Working with file paths
Joining paths
Resolving paths
Directory names
File extensions
Cross-platform compatibility

7. OS Module

System information
CPU information
Memory information
User information
Operating system details

8. Events

EventEmitter
Creating custom events
Listening for events
Removing event listeners
Real-world event examples

9. Streams and Buffers

Readable streams
Writable streams
Duplex streams
Transform streams
Buffers
Piping streams
Handling large files efficiently

10. HTTP Module

Creating a web server
Handling requests and responses
Serving HTML pages
Serving JSON data
Working with status codes
Basic routing

11. Express.js Introduction

Why Express.js
Installing Express
Creating an Express server
Basic routing
Middleware overview
Sending responses

12. Express Routing

Route parameters
Query parameters
POST requests
PUT requests
DELETE requests
RESTful routing
Organizing routes

13. Middleware

Application middleware
Route middleware
Built-in middleware
Third-party middleware
Custom middleware
Error-handling middleware

14. REST API Development

REST principles
Building REST APIs
CRUD operations
API testing with Postman
HTTP methods
Status codes
API versioning

15. Request and Response Objects

Request body
Query strings
Route parameters
Headers
Cookies
Response methods
JSON responses

16. Working with Databases

Introduction to databases
SQL vs NoSQL
Connecting to MongoDB
Installing Mongoose
Creating schemas
Models
CRUD operations

17. Authentication and Authorization

User registration
User login
Password hashing with bcrypt
JWT Authentication
Protected routes
Role-based authorization

18. Validation

Input validation
Express Validator
Custom validation rules
Sanitization
Handling validation errors

19. Error Handling

Try/Catch
Async error handling
Global error middleware
Custom error classes
Logging errors

20. File Uploads

Uploading files with Multer
Image validation
Storage options
Serving uploaded files
Multiple file uploads

21. Environment Variables

dotenv package
Managing configuration
Secrets management
Environment-specific settings

22. Asynchronous Programming

Callbacks
Promises
Async/Await
Handling asynchronous operations
Error handling in async code

23. Working with APIs

Consuming external APIs
Axios
Fetch API in Node.js
Handling JSON responses
API integration

24. Email Services

Sending emails with Nodemailer
SMTP configuration
HTML email templates
Password reset emails

25. Security Best Practices

Helmet
CORS
Rate limiting
Preventing SQL/NoSQL injection
Preventing XSS attacks
Securing API endpoints

26. Logging and Monitoring

Morgan logger
Winston logger
Application logs
Error logs
Performance monitoring

27. Real-Time Applications

Introduction to WebSockets
Socket.IO
Real-time chat application
Live notifications
Broadcasting events

28. Testing Node.js Applications

Introduction to testing
Jest basics
Supertest
Testing APIs
Mocking dependencies

29. Performance Optimization

Caching strategies
Compression
Database indexing
Pagination
Optimizing API performance
Memory management

30. Deployment

Production environment
PM2 Process Manager
Deploying to Render
Deploying to Railway
Deploying to DigitalOcean
Deploying to Azure
Deploying to AWS EC2
Deploying to IIS (Reverse Proxy)

31. Project Architecture

MVC architecture
Controllers
Models
Routes
Services
Utilities
Configuration files
Scalable folder structure

32. Best Practices

Code organization
Naming conventions
Reusable modules
API documentation with Swagger/OpenAPI
Version control with Git
Writing maintainable code

33. Mini Projects

RESTful Notes API
Task Management API
Authentication System
Blog API
Inventory Management System
Chat Server with Socket.IO

34. Final Project

Students will build a complete production-ready backend application that includes:

RESTful API architecture
User authentication and authorization (JWT)
CRUD operations with MongoDB and Mongoose
Input validation and error handling
File upload functionality
Email notifications
Secure API endpoints
Role-based access control
API documentation with Swagger
Logging and monitoring
Real-time features using Socket.IO
Deployment to a live production server