I am using "ngx_http_limit_req" module. After going through the code I see that if "burst = 0" (i.e. not specified) then maximum rate limiting that can be offered is 1000 RPS only. I have seen this in my stress test too. I didn't see this in any documentation. Want to clarify if this is really true or I missed something?
--- Reasoning : 1. Module expects uniform request arrival. Any request that breaks the uniformity, will get rate limited. 2. Configured rate = 1000r/s. This means 1 request-per-ms. 3. If more than 1 request is received in same "ms" time, then only 1 request is served. All other requests are rate limited. 4. For above configuration, if "burst=X" is configured, then "X" number of requests are served while requests more than that will get rate limited. 5. If Configured rate = 2000r/s (i.e. 2 request-per-ms). If "burst=0" (i.e. not specified), then too it supports only 1-request-per-ms rate. If 3 requests are received in same "ms" then only 1 is served and other 2 are rate limited. Posted at Nginx Forum: http://forum.nginx.org/read.php?2,249344,249344#msg-249344 _______________________________________________ nginx mailing list [email protected] http://mailman.nginx.org/mailman/listinfo/nginx
