关memcached 共享tomcat session的有关问题

upstream tomcat{  
        server   127.0.0.1:81;  
        server   127.0.0.1:85;  
          
    }  
server {  
        listen       80;  
        server_name  localhost;  
  
        #charset koi8-r;  
  
        #access_log  logs/host.access.log  main;  
  
        location / {  
            root   html;  
            index  index.html index.htm;  
            proxy_pass  http://tomcat;  
        }  
    ...  
}  

<Manager className="de.javakaffee.web.msm.MemcachedBackupSessionManager"  
   memcachedNodes="n1:localhost:11211"      
   requestUriIgnorePattern=".*\.(ico|png|gif|jpg|css|js)$"  
   transcoderFactoryClass="de.javakaffee.web.msm.serializer.kryo.KryoTranscoderFactory"  
   />