Express middleware for universal-rate-limit — a zero-dependency rate limiter built on web standards. Supports fixed-window and sliding-window algorithms, pluggable stores (memory, Redis, or your own), and IETF-compliant rate limit headers out of the box.

Install

npm install @universal-rate-limit/express

Usage

import express from 'express';
import { expressRateLimit } from '@universal-rate-limit/express';

const app = express();

// Apply to all routes
app.use(
    expressRateLimit({
        windowMs: 60_000, // 1 minute
        limit: 60 // 60 requests per window
    })
);

// Or apply to specific routes
app.use(
    '/api',
    expressRateLimit({
        windowMs: 60_000,
        limit: 30
    })
);

app.listen(3000);

Options

Accepts all core options — windowMs, limit, algorithm, store, keyGenerator, skip, handler, message, statusCode, headers, and passOnStoreError.

Example

See examples/express for a complete working app with integration tests.

Documentation

View the full documentation

License

MIT