Varnish 服务配置文件

Varnish是一款高性能的开源HTTP加速器，编译方面这里不多说了。所以自己也采用这个加速器。结果表明还是蛮不错的。现将配置说明如下：

backend painiu { 
       .host = "113.107.103.XXX"; 
       .port = "81"; 
       .connect_timeout = 100s;
       .first_byte_timeout = 500s;
       .between_bytes_timeout = 200s;
}

acl purge {
       "113.107.103.XXX";
       "127.0.0.1";
}

sub vcl_recv {
       if (req.request == "PURGE") {
               if (!client.ip ~ purge) {
                       error 405 "Not allowed.";
               }
               lookup;
       }
       #unset req.http.X-Varnish;
       #unset req.http.Via;
       #unset req.http.Accept-Encoding;
       #unset req.http.Vary;

       if (req.http.host ~ "^(.*).painiu.com") {
               set req.backend = painiu; 
               if (req.request != "GET" && req.request != "HEAD") {
                       pipe;
               }
               else {
                       lookup;
               }
       } 
 
       elseif (req.http.host ~ "^(.*).hi51.cn") {
               set req.backend = painiu;
               if (req.request != "GET" && req.request != "HEAD") {
                       pipe;
               }
               else {
                       lookup;
               }
       }
       elseif (req.http.host ~ "^hi51.cn") {
               set req.backend = painiu;
               if (req.request != "GET" && req.request != "HEAD") {
                       pipe;
               }
               else {
                       lookup;
               }
       }

       elseif (req.http.host ~ "^(.*).365.com") {
               set req.backend = painiu;
               if (req.request != "GET" && req.request != "HEAD") {
                       pipe;
               }
               else {
                       lookup;
               }
       }
       elseif (req.http.host ~ "^365.com") {
               set req.backend = painiu;
               if (req.request != "GET" && req.request != "HEAD") {
                       pipe;
               }
               else {
                       lookup;
               }
       }

       elseif (req.http.host ~ "^painiu.com") {
               set req.backend = painiu;
               if (req.request != "GET" && req.request != "HEAD") {
                       pipe;
               }
               else {
                       lookup;
               }
       }


       else {
               error 404 "Painiu Cache Server";
               lookup;
       } 
}

sub vcl_hit {
       if (req.request == "PURGE") {
               set obj.ttl = 0s;
               error 200 "Purged.";
       }
}

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

sub vcl_fetch {
      if (req.request == "GET" && req.url ~ "\.(txt|js|html|htm|css|jpg|gif|png|swf)($|\?)") {
               set obj.ttl = 3600s;
       }
       else {
               set obj.ttl = 0s;
       }
}

sub vcl_deliver {
        remove resp.http.X-Varnish;
        remove resp.http.Via;
        if (obj.hits > 0) {
                set resp.http.X-Cache = "HIT";
        } else {
                set resp.http.X-Cache = "MISS";
        }
}