Summary
- Production-ready Node.js backend patterns with Express/Fastify, middleware, authentication, and database integration.
- Covers layered architecture (controllers, services, repositories), dependency injection, and microservices design with TypeScript Includes middleware patterns for authentication, validation, rate limiting, and request logging with practical examples Provides custom error handling, global error handlers, and async error wrappers for robust error management Supports PostgreSQL (connection pooling, transactions) and MongoDB (Mongoose) with caching strategies using Redis Demonstrates JWT authentication, refresh tokens, API response formatting, and best practices for production deployments