https://github.com/vozlt/nginx-module-vts
https://github.com/zls0424/ngx_req_status
https://github.com/magicbear/ngx_realtime_request_module
本文出自 “crazy_sir” 博客，请务必保留此出处http://douya.blog.51cto.com/6173221/1931223
原文：http://douya.blog.51cto.com/6173221/1931223