nginx variable to know the number of active connections

[gglamenace]

Oh great, so i can parameter using a cache mechanism using
fastcgi_cache_path or the Lua Module SRCACHE for my PHP upstream block
simply by checking for example $connections_waiting on each request.
I don't know exactly what would be a right setting for using a cache by
testing $connections_waiting. I have to do some tests.

thank you

Jérôme

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,245738,245741#msg-245741