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Build a Custom Rate Limiter in Node.js with Redis

Tutorial April 04, 2025 

// server.js
require("dotenv").config();
const express = require("express");
const rateLimiter = require("./rateLimiter");

const app = express();
const PORT = 3000;

app.use(rateLimiter(100, 3600)); // 100 requests/hour per IP

app.get("/", (req, res) => {
  res.send("Welcome! You're within rate limit.");
});

app.listen(PORT, () => {
  console.log(`Server running on http://localhost:${PORT}`);
});

Use Postman or curl:

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