Skip to content

README.md

Latest commit

 

History

History
23 lines (16 loc) · 670 Bytes

README.md

File metadata and controls

23 lines (16 loc) · 670 Bytes

Rate Limiter

A simple rate limiter for Express.js

Token Bucket algorithm.

Each client gets a token bucket that refills over time. If no tokens are available, the request is rejected with 429 Too Many Requests.

Token Bucket -> How It Works

  • Each client has a bucket with fixed capacity.
  • Tokens refill at a given refillRate.
  • Each request consumes 1 token.
  • If empty → request is blocked.

Example in server.js:

const tokensPerMinute = 10;
const refillRate = tokensPerMinute / 60;

const tokenBucketLimiter = new TokenBucketLimiter(tokensPerMinute, refillRate);
app.use(createRateLimiter(tokenBucketLimiter));