This project is maintained by upempty
user access http://www.google.com => user—->proxy——>http://www.google.com
user access http://www.google.com/abc => user—->proxy——>http://www.google.com/abc
user access http://www.google.com/def => user—->proxy——>http://www.google.com/def
user access http://www.baidu.com => user—>virtual IP of (http://www.baidu.com)–>real server1
user access http://www.baidu.com/abc => user—>virtual IP of (http://www.baidu.com)–>real server2
user access http://www.baidu.com/def => user—>virtual IP of (http://www.baidu.com)–>real server3