http {
		upsteam servicename1 {
				server 192.168.1.100 : 2345
			}
	   	upsteam servicename2 {
				server 192.168.1.101 : 4567
			}
	
	   server{
			 location  /  {
            	 proxy_pass http://servicename1 ;
        			}
        		#預設執行servicename1	
				#使用location對不同請求做相應處理
        	location /product/{
            	 proxy_pass http://servicename1 ;
        			}
        	location /admin/ {
            	proxy_pass http://servicename2;
        			}
        }