fensr/src/limiter.ts

Fensr – Throttle wisely. Protect efficiently. A fast, Redis-powered rate limiting middleware for Node.js and Express.

import rateLimit from "express-rate-limit";
import RedisStore from "rate-limit-redis";
import { createClient } from "redis";

const redisClient = createClient({
  socket: {
    host: process.env.REDIS_HOST,
    port: Number(process.env.REDIS_PORT),
  },
  username: process.env.REDIS_USERNAME,
  password: process.env.REDIS_PASSWORD,
});

redisClient.connect();

export function createRateLimiter() {
  return rateLimit({
    windowMs: 60 * 1000, // 1 minute
    max: 5, // limit each IP to 5 requests per window
    standardHeaders: true,
    legacyHeaders: false,
    store: new RedisStore({
      sendCommand: (...args: string[]) => redisClient.sendCommand(args),
    }),
  });
}