Nginx Rate Limit Generator

Generate Nginx rate limiting

Rate limiting protects a web server from abuse and overload by capping how many requests a client can make in a given time. This generator produces the Nginx configuration using the limit_req_zone and limit_req directives. You set the sustained rate in requests per second, a burst allowance for short spikes, and the size of the shared memory zone that tracks clients. The zone keys on the client IP address, a common and sensible default.

The burst with nodelay lets brief bursts through immediately up to the limit, while excess requests receive a 429 Too Many Requests response.

Protecting your endpoints

Rate limiting is essential for guarding login forms, APIs and expensive endpoints against brute-force attacks, scraping and accidental request floods. Setting the rate too low frustrates legitimate users, while setting it too high offers little protection, so tune it to your traffic. The memory zone size determines how many client states can be tracked; roughly sixteen thousand IPs fit per megabyte.

Apply the limit_req directive only to the locations that need protection, such as an API path or login endpoint. Review the config and reload Nginx. All generation happens locally in your browser.

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