AB testing with nginx

[dawe7]

Hello,
I need testing our web-site using AB Test.
One half request serve by first upstream, and other request serve by second upstream.

But If request goes from same people/computer/IP is necessary route request to same upstream like last request from this people/computer/IP.

I think that I may split user by IP adress. Even IP(last 3 digits from IP) route to first  upstream and odd IP route to second upstream.
But how to do that?


Thanks for help
Dawe

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,19499,19499#msg-19499