location ~* ^.+\.(js|ico|gif|jpg|jpeg|png|html|htm)$ {
  log_not_found off;
  access_log off;
  expires 7d;
}

location ~ .*\.(gif|jpg|jpeg|png|bmp|swf|js|html|htm|css)$ {
      log_not_found off;
      expires 7d ;
      access_log off;
      proxy_store on;
      proxy_store_access user:rw group:rw all:rw;
      if ( !-e $request_filename) {
      proxy_pass http://img.example.com
      }
}

./configure --user=www --group=www --add-module=/root/dxm/nginx/ngx_cache_purge-1.2  

proxy_temp_path /usr/local/nginx/proxy_temp; 
proxy_cache_path /usr/local/nginx/proxy_cache_path levels=1:2 keys_zone=cache_one:200m inactive=1d max_size=1g; 

upstream tomcat_server{ 
  server 127.0.0.1:8080;  
  } 
   
   
  server{ 
  listen 192.168.154.128; 
  server_name www.wolf.com; 
   
  location ~ .*\.(gif|jpg|jpeg|png|bmp|swf)$ 
  { 
       
      proxy_cache cache_one; 
      proxy_cache_methods GET HEAD POST; 
        proxy_cache_min_uses 1; 
       proxy_cache_valid 200 302 10m; 
       proxy_cache_valid 404 1m; 
      proxy_cache_valid any 1m; 
       proxy_cache_key "$host:$server_port$uri$is_args$args"; 
 
     proxy_redirect off; 
     proxy_set_header Host $host; 
     proxy_set_header X-Real-IP $remote_addr; 
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
     proxy_pass http://tomcat_server; 
      
 
  } 
   
 
  location ~ .*\.(jsp)$ { 
       
     proxy_redirect off; 
     proxy_set_header Host $host; 
     proxy_set_header X-Real-IP $remote_addr; 
     proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for; 
     proxy_pass http://tomcat_server; 
 
  } 
   
 
  location ~ /purge(/.*) 
  { 
    allow 192.168.154.128; 
    allow 192.168.154.1; 
      deny all; 
      proxy_cache_purge cache_one $host:$server_port$1$is_args$args; 
    }