How to Implement API Rate Limiting in Node.js (3 Methods Compared)

Rate limiting is one of those things every API needs but most tutorials overcomplicate. Here are 3 practical approaches, from simplest to most robust. Why Rate Limiting Matters Without it, a single user (or bot) can: Crash your server with too many requests Scrape your entire database Run up your cloud bill overnight Method 1: express-rate-limit (Quick & Easy) npm install express-rate-limit const rateLimit = require ( ' express-rate-limit ' ); const limiter = rateLimit ({ windowMs : 15 * 60 * 1000 , // 15 minutes max : 100 , // limit each IP to 100 requests per window standardHeaders : true , legacyHeaders : false , message : { error : ' Too many requests, please try again later. ' } }); app . use ( ' /api/ ' , limiter ); Pros: 5 lines of code, works immediately Cons: In-memory only — resets on server restart, doesn't work across multiple instances Method 2: Redis-based Rate Limiting (Production Ready) npm install rate-limit-redis ioredis const RedisStore = require ( ' rate-limit-redis