What Is Rate Limiting?
Rate limiting is a server-side mechanism that controls the number of requests a client (identified by IP, user agent, or API key) can make within a defined time window. When a client exceeds the limit, the server returns a 429 (Too Many Requests) status code and may temporarily block the client.
Why Rate Limiting Matters
Rate limiting protects your server from being overwhelmed by aggressive bots, scrapers, and attackers. Unlike robots.txt (which is advisory), rate limiting is enforced at the server level and cannot be bypassed by ignoring directives. It is essential for defending against DDoS attacks, credential stuffing, and aggressive AI crawlers.
How to Implement Rate Limiting
Configure rate limits in your web server (Nginx: limit_req_zone), CDN (Cloudflare Rate Limiting), or application framework. Set different limits for different endpoints — APIs may need stricter limits than static pages. Monitor rate-limited requests in your logs with LogBeast to tune your thresholds.
📖 Related Article: API Rate Limiting Best Practices — Read our in-depth guide for practical examples and advanced techniques.
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