Back-end & APIs · Tool
Express
Minimal and flexible HTTP for Node.js.
01Overview
Express is the minimal web framework behind countless Node.js APIs. I use it for lightweight services and BFFs where simplicity and full control over the request pipeline matter.
02Key concepts
What anyone working with it needs to understand
- 01
Routing
Routers, params and RESTful resource design.
- 02
Middleware
The request/response pipeline and composing behavior.
- 03
Error handling
Centralized error middleware and consistent responses.
- 04
Validation
Validating and sanitizing input at the edge.
- 05
Security
Helmet, CORS, rate limiting and authentication.
- 06
Structure
Organizing controllers, services and layers as the app grows.
03In practice
Part of my Node.js toolkit for REST APIs, studied in depth in my Node.js certification (MVC and REST APIs).
