nanolimit v0.2.0

Nanorate

Ultra-fast, zero-dependency rate limiting for Node.js.

Features

• Zero dependencies
• Extremely high performance (>1M ops/sec)
• Minimal memory footprint
• Efficient garbage collection
• Express middleware support
• Customizable windows and limits
• Rate limit headers

Installation

npm install nanorate

Usage

Basic Usage

const NanoRate = require("nanorate");

const limiter = new NanoRate({
  windowMs: 60000, // 1 minute
  maxRequests: 100, // limit each key to 100 requests per window
  errorMessage: "Too many requests",
  headers: true, // Send rate limit headers
});

// Check rate limit
const result = limiter.check("user-123");
if (result.status === "error") {
  console.log("Rate limit exceeded");
}

Express Middleware

const express = require("express");
const NanoRate = require("nanorate");

const app = express();

app.use(
  new NanoRate({
    windowMs: 900000, // 15 minutes
    maxRequests: 100, // limit each IP to 100 requests per window
  }).middleware()
);

Performance

Run the benchmark:

node benchmark.js

Typical results:

• Single key: ~2M ops/sec
• Multiple keys: ~1.5M ops/sec
• Memory usage: <1MB for 10k active keys

Configuration

License

MIT