varnish 的一个配置

backend default {
     .host = "10.32.26.31";
     .port = "8080";
 }
 sub vcl_recv {

     if (req.url ~ "&gv=.*&av=.*&uid=.*&proid=.*&os=.*&df=.*&vt=.*&screen=.*&publishid=d+") {
            set req.url = regsub(req.url, "&gv=.*&av=.*&uid=.*&proid=.*&os=.*&df=.*&vt=.*&screen=.*&publishid=d+", "");
        }

     if (req.restarts == 0) {
        if (req.http.x-forwarded-for) {
            set req.http.X-Forwarded-For =
                req.http.X-Forwarded-For + ", " + client.ip;
        } else {
            set req.http.X-Forwarded-For = client.ip;
        }
     }
     if (req.request != "GET" &&
       req.request != "HEAD" &&
       req.request != "PUT" &&
       req.request != "POST" &&
       req.request != "TRACE" &&
       req.request != "OPTIONS" &&
       req.request != "DELETE") {
         /* Non-RFC2616 or CONNECT which is weird. */
         return (pipe);
     }

     if (req.request != "GET" && req.request != "HEAD") {
        /* We only deal with GET and HEAD by default */
         return (pass);
     }

     return (lookup);
 }
 sub vcl_pipe {
     return (pipe);
 }
 sub vcl_pass {
     return (pass);
 }
 sub vcl_hit {
     return (deliver);
 }

 sub vcl_miss {

    if (req.request == "PURGE") {
        error 404 "Not in cache";
    }

     return (fetch);
 }
 sub vcl_fetch {

if (req.request == "GET" && req.url ~ "/qqcallback.(php).+") {
    set beresp.ttl = 0s;
 } 
if (req.request == "GET" && req.url ~ "/getspecial.(php).+") {
    set beresp.ttl = 0s;
 }
if (req.request == "GET" && req.url ~ ".(php).+") {
   set beresp.ttl = 3m;
 }

if ( req.url ~ ".(gif|jpg|png|jpeg|swf|css|js)$" ) {
        set beresp.ttl = 10m;
    }

   if (beresp.status == 404) {
       set beresp.ttl = 3s;
   }
 }

参考 http://blog.csdn.net/keda8997110/article/details/8777153