Search⌘ K
AI Features

Familiarize Yourself with Middleware Functions

Explore the role of middleware functions in Express.js to control API request handling. Understand how global and route-specific middleware operate, and learn to create reusable middleware for API rate limiting with Redis in Node.js applications.

We'll cover the following...

Before moving to implementation, we need to understand middleware functions. Our API rate-limiting function is actually going to be a middleware function that can be reused in any of the API routes, with a configurable window and the maximum number of API calls allowed per IP address in that window.

What are middleware functions?

In Express.js, middlewares are functions that have access to the request ( ...