Express.js Must Know

This branch covers the concepts needed for real API development.

Topics here

• What Express is.
• Routing.
• Params, query, and body.
• Middleware.
• Controllers and services.
• REST API design.
• Request validation.
• Error handling middleware.
• Authentication and JWT.
• Authorization.
• CORS.
• Pagination, filtering, and sorting.

Practice rule

Build one CRUD API manually. Then add validation, error handling, auth, and pagination one by one.