What are some effective rate limiting tools and libraries?

What are some effective rate limiting tools and libraries?

There are several popular rate limiting tools and libraries, such as Redis, Bucket4j, and RateLimiter in Google Guava. Do you have a specific programming language in mind?

I'm using Node.js. Any recommendations?

For Node.js, you can use libraries like express-rate-limit or rate-limiter-flexible. They are easy to integrate with Express applications.

How do I implement express-rate-limit in my project?

First, install it using npm: npm install express-rate-limit. Then, you can set it up in your Express app like this:

const rateLimit = require('express-rate-limit');

const limiter = rateLimit({
  windowMs: 15 * 60 * 1000, // 15 minutes
  max: 100 // limit each IP to 100 requests per windowMs
});

app.use(limiter);

What happens if a user exceeds the rate limit?

If a user exceeds the rate limit, they will receive a 429 Too Many Requests response, indicating that they need to wait before making more requests.