<div dir="ltr">Hai,<br><br>I configured varnish along with Apache as web server(2 web servers) and Haproxy as load load balancer. Varnish is working when there is only one web server.<br><br>The flow of rewuest is:<br><br>
Fist the request hits Varnish  from varnish to Haproxy from here any one of the web server (web1 or web2)<br><br>My varnish configuration is below <br><br>      backend default {<br>        # Our default backend, i.e. the web server<br>
        # You can use more than 1. See docs.<br>        set backend.host = "<a href="http://0.0.0.0">0.0.0.0</a>";<br>        set backend.port = "9999";<br>      }<br><br>         sub vcl_recv {<br>             if (req.request != "GET" && req.request != "HEAD") {<br>
                 pipe;<br>             }<br>             if (req.http.Expect) {<br>                 pipe;<br>             }<br>             if (req.http.Authenticate || req.http.Cookie) {<br>                 pass;<br>             }<br>
             if (req.request == "GET") {<br>                 lookup;<br>             }<br>             else {<br>                lookup;<br>             }<br>         }<br>        sub vcl_pipe {<br>             pipe;<br>
         }<br><br>         sub vcl_pass {<br>             pass;<br>         }<br><br>         sub vcl_hash {<br>             set req.hash += req.url;<br>             set req.hash += req.http.host;<br>             hash;<br>
         }<br><br>         sub vcl_hit {<br>             if (!obj.cacheable) {<br>                 pass;<br>             }<br>             deliver;<br>         }<br><br>         sub vcl_miss {<br>             fetch;<br>         }<br>
         sub vcl_fetch {<br>             if (!obj.valid) {<br>                 error;<br>             }<br>             if (!obj.cacheable) {<br>                 pass;<br>             }<br>             insert;<br>         }<br>
<br>         sub vcl_deliver {<br>             deliver;<br>         }<br><br>         sub vcl_timeout {<br>             discard;<br>         }<br><br>         sub vcl_discard {<br>             discard;<br>         }<br><br>
<br><strong>Shahid</strong><br></div>