Module ngx_http_limit_req_module - Nginx
https://nginx.org/en/docs/http/ngx_http_limit_req_module.html
limit_req zone=one burst=5 nodelay; The delay parameter (1.15.7) specifies a limit at which excessive requests become delayed. Default value is zero, i.e. all excessive requests are delayed. There could be several limit_req directives. For example, the following configuration will limit the processing rate of requests coming from a single IP address and, at the same time, …
DA: 48 PA: 75 MOZ Rank: 40