bunlimit

A simple and powerful rate limiting library for Bun, using Bun's native Redis client. Inspired by Upstash Ratelimit.

Features

🚀 Built for Bun - Uses Bun's native Redis client for maximum performance
🔌 Flexible Adapters - Support for ioredis, node-redis, and custom clients
🎯 Multiple Algorithms - Fixed Window, Sliding Window, and Token Bucket
📊 Analytics - Optional request tracking and analytics
🔄 Multi-Identifier - Rate limit multiple identifiers at once
💪 Type-Safe - Full TypeScript support with complete type definitions
⚡ Simple API - Intuitive and easy to use

Quick Start

Install bunlimit:

bun add bunlimit

Basic usage:

import { RedisClient } from 'bun'
import { Ratelimit, fixedWindow } from 'bunlimit'

const redis = new RedisClient('redis://localhost:6379')

const ratelimit = new Ratelimit({
  redis,
  limiter: fixedWindow(10, 60), // 10 requests per 60 seconds
})

const { success, remaining } = await ratelimit.limit('user-123')

if (!success) {
  throw new Error('Rate limit exceeded')
}