Nginx proxy overhead with / out keep alive requests

[paphillon]

Hi Maxim,

Thanks for the insight! I had a hunch on the keepalive setting from
nginx to tomcat, but did not really find anything in the document about
that. I will give it a try and let you know the results. I am not sure
if I will be able to use this keepalive in production as it requires
upstream config and differs from the way we have architect Nginx
configuration. 

I am using nginx as a dynamic proxy which routes the clients calls
(primarily web service calls) to different servers depending on the key
the client passes via cookie or http headers. The url's are in a map in
the below form

     map $http_void $header_based_url{
        default "no_http_header";
        key1 server_instance_1_url;
        key2 server_instance_2_url;
        ......
    }

  location /xxx {
         proxy_pass $header_based_url;
  }
And to make it more simple to add / maintain the server url's, the URL's
are stored in a flat file 

I am not sure how I can use the keepalive over here other than the
upstream or how do I make this upstream config compatible.

Regards

Posted at Nginx Forum: http://forum.nginx.org/read.php?2,227472,227503#msg-227503