http://www.csdn.net/article/2013-01-10/2813545-Building-Scalable-Web-Architecture
http://www.csdn.net/article/2013-01-21/2813784-Building-Scalable-Web-Architecture
http://www.csdn.net/article/2013-01-10/2813545-Building-Scalable-Web-Architecture
http://www.csdn.net/article/2013-01-21/2813784-Building-Scalable-Web-Architecture