ok I found that yesterday, and as a variable in limit_req_zone I should use some constant eg: set $con 10; and it looks like: set $con 10; limit_req_zone $con zone=one:15m rate=10r/s; and it should work as I want? Aking, because I'm testnig it now, and it dont work properly. Posted at Nginx Forum: http://forum.nginx.org/read.php?2,251870,251875#msg-251875