express-rest-api

Master building robust, scalable REST APIs with Express.js, the de-facto standard for Node.js web frameworks. Build a basic Express API in 5 steps: Complete user API: Use Express REST API when: - Setup Express - npm install express - Create Routes - Define GET, POST, PUT, DELETE endpoints - Add Middleware - JSON parsing, CORS, security headers - Handle Errors - Centralized error handling - Test & Deploy - Use Postman/Insomnia, deploy to cloud - ✅ Setup Express and create basic routes - ✅ Understand middleware concept - ✅ Implement CRUD operations - ✅ Test with Postman - ✅ Implement authentication (JWT) - ✅ Add input validation - ✅ Organize code (MVC pattern) - ✅ Connect to database - ✅ API versioning ( /api/v1/ , /api/v2/ ) - ✅ Rate limiting and security - ✅ Pagination and filtering - ✅ API documentation (Swagger) - ✅ Performance optimization - 200 OK - Successful GET/PUT - 201 Created - Successful POST - 204 No Content - Successful DELETE - 400 Bad Request - Validation error - 401 Unauthorized - Auth required - 403 Forbidden - No permission - 404 Not Found - Resource not found - 500 Internal Error - Server error - ✅ Environment variables (.env) - ✅ Security headers (Helmet) - ✅ CORS configuration - ✅ Rate limiting - ✅ Input validation - ✅ Error handling - ✅ Logging (Morgan/Winston) - ✅ Testing (Jest/Supertest) - ✅ API documentation - Building backend for web/mobile apps -...