Day 1: Advanced Routing in Express.js

Session 1: Understanding Express Routing and Dynamic Parameters

• Recap of basic routing in Express.js
• Implementing route parameters and query strings
• Handling optional and wildcard routes

Session 2: Modularizing Routes for Scalability

• Using Express Router for modular routing
• Organizing route files and controller logic
• Implementing versioning in API routes (v1, v2, etc.)

Session 3: Hands-on Lab – Implementing Dynamic and Modular Routing

• Creating modular route files for a real-world application
• Handling complex route logic using middleware

Day 2: Custom Middleware and Authentication Strategies

Session 1: Creating and Using Custom Middleware in Express.js

• Understanding middleware types (application-level, router-level, third-party, built-in)
• Implementing custom middleware for logging, security, and request validation
• Using Express.js third-party middleware (helmet, morgan, cors, etc.)

Session 2: Securing APIs with Authentication and Authorization

• Implementing JWT (JSON Web Token) authentication
• Using OAuth2 authentication with Passport.js
• Implementing session-based authentication with Express-Session

Session 3: Hands-on Lab – Securing an API with Custom Middleware and Authentication

• Creating middleware for request validation and logging
• Implementing JWT authentication for protected routes

Day 3: Error Handling, Debugging, and Performance Optimization

Session 1: Error Handling and Logging in Express.js

• Implementing centralized error handling middleware
• Logging errors using Winston and Morgan
• Handling asynchronous errors with Express and async/await

Session 2: Performance Optimization and Debugging

• Debugging Express applications using Node.js debugging tools
• Improving middleware performance with caching and rate-limiting
• Optimizing request processing using compression and load balancing

Session 3: Hands-on Lab – Implementing Error Handling and Debugging

• Adding centralized error-handling middleware to an application
• Debugging and optimizing API performance using profiling tools