This is a fork of ey balancer due to unmaintainity of original repo. haproxy maxconn for nginx Adds a request queue to Nginx that allows the limiting of concurrent requests passed to the upstream. "max_connections N;" in an upstream directive means that each upstream server will be given N request at a time, per Nginx worker. For example, if you have two workers and "max_connections 1;" then there will be a total of 2 requests at a time on each upstream server. Some benchmarks: http://four.livejournal.com/955976.html Usage: upstream mongrels { server 127.0.0.1:8001; server 127.0.0.1:8002; max_connections 1; } Install: This module requires one to patch Nginx. The module also includes a Makefile for easily building it into Nginx and running tests. If the Makefile is used then the first line must be changed to point to the Nginx source tree. Here is an example of how one might compile nginx with this module. tar -zxf nginx-0.6.35.tar.gz tar -xzf ngx_max_connections-0.0.5.tar.gz cd nginx-0.6.35 patch -p0 < ../ngx_max_connections-0.0.5/patches/nginx-0.6.35.patch cd ../ngx_max_connections-0.0.5 vim Makefile #### edit the first line! make configure make make test #### requires ruby, rubygems, rack, and httperf