测试WWW方案（反向代理，负载均衡，HTTP加速缓存）

大约图如下：

NGINX FRONT（80）--->VARNISH（8080）---->LNMP BACKEND 1（80）

|--->LNMP BACKEND 2（80）

主要是前两个的配置文件：

NGINX-FRONT：

#user  nobody;
worker_processes  ;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

#pid        logs/nginx.pid;

events {
    worker_connections  ;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  ;
    keepalive_timeout  ;

    #gzip  on;
    upstream  mylocalsite {
     server   ;
    } 

    server {
        listen       ;
        server_name  192.168.1.101;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
             proxy_pass http://mylocalsite;
        }

        #error_page                /.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page        /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}

        # pass the PHP scripts to FastCGI server listening on
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   ;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }

    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       ;
    #    listen       somename:;
    #    server_name  somename  alias  another.alias;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

    # HTTPS server
    #
    #server {
    #    listen        ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

VARNISH：

 backend server1 {
     .host = "192.168.1.102";
     .port = ";

 }
 backend server2 {
     .host = "192.168.1.102";
     .port = ";

 }

director myvarnish round-robin {
 { .backend = server1; 

}
 { .backend = server2;
}
 }
 sub vcl_recv {

     if (req.http.host !~ "www\.myvarnish\.com$"){
    error  "Unknown HostName!";
        } else {
    set req.backend = myvarnish;
     }
     ) {
     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);
     }
     if (req.http.Authorization || req.http.Cookie) {
         /* Not cacheable by default */
         return (pass);
     }
     return (lookup);
 }

 sub vcl_pipe {

     return (pipe);
 }

 sub vcl_pass {
     return (pass);
 }

 sub vcl_hash {
     hash_data(req.url);
     if (req.http.host) {
         hash_data(req.http.host);
     } else {
         hash_data(server.ip);
     }
     return (hash);
 }

 sub vcl_hit {
     return (deliver);
 }

 sub vcl_miss {
     return (fetch);
 }

 sub vcl_fetch {
     if (beresp.ttl <= 0s ||
         beresp.http.Set-Cookie ||
         beresp.http.Vary == "*") {
         /*
          * Mark as "Hit-For-Pass" for the next 2 minutes
          */
          s;
         return (hit_for_pass);
     }
     return (deliver);
 }

 sub vcl_deliver {
     return (deliver);
 }

 sub vcl_error {
     set obj.http.Content-Type = "text/html; charset=utf-8";
     ";
     synthetic {"
 <?xml version="1.0" encoding="utf-8"?>
 <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
 <html>
   <head>
     <title>"} + obj.status + " " + obj.response + {"</title>
   </head>
   <body>
     <h1>Error "} + obj.status + " " + obj.response + {"</h1>
     <p>"} + obj.response + {"</p>
     <h3>Guru Meditation:</h3>
     <p>XID: "} + req.xid + {"</p>
     <hr>
     <p>Varnish cache server</p>
   </body>
 </html>
 "};
     return (deliver);
 }

 sub vcl_init {
     return (ok);
 }

 sub vcl_fini {
     return (ok);
 }

NGINX-BACKEND：

#user  nobody;
worker_processes  ;

#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;

pid        logs/nginx.pid;

events {
    worker_connections  ;
}

http {
    include       mime.types;
    default_type  application/octet-stream;

    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';

    #access_log  logs/access.log  main;

    sendfile        on;
    #tcp_nopush     on;

    #keepalive_timeout  ;
    keepalive_timeout  ;

    #gzip  on;

    server {
        listen       ;
        #server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

        location / {
            root   ;
            index  index.html index.htm index.php;
        }

        #error_page                /.html;

        # redirect server error pages to the static page /50x.html
        #
        error_page        /50x.html;
        location = /50x.html {
            root   html;
        }

        # proxy the PHP scripts to Apache listening on
        #
        location ~ \.php$ {
         root ;
         fastcgi_pass   ;
               fastcgi_index  index.php;
             fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
             include        fastcgi_params;
        }

        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }

    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    server {
        listen       ;
        #listen       localhost:;
    #    server_name  somename  alias  another.alias;

        location / {
            root   ;
            index  index.html index.htm;
        }
      location ~ \.php$ {
         root ;
         fastcgi_pass   ;
               fastcgi_index  index.php;
             fastcgi_param  SCRIPT_FILENAME  $document_root$fastcgi_script_name;
             include        fastcgi_params;
        }
    }

    # HTTPS server
    #
    #server {
    #    listen        ssl;
    #    server_name  localhost;

    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;

    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;

    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;

    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}

}

WINDOWS下用VMLITE WORKSTATION测试，资源耗费真的不多呢。