1. Background: Some Web sites need to meet customer requirements of high concurrent requests, large data access, and so on, these scenarios need to conduct a holistic architecture analysis of the site, and then determine the system architecture that meets the requirements, including server clusters, load balancer selection, database cluster architecture, Cache server Building, distributed storage System, code distribution system and other aspects of the content.
2. Overview of the system architecture of large Web sites: You can see the following blog (this part of the content skimming, probably know the various technologies involved in the concept can be)
Http://www.cnblogs.com/Mainz/archive/2009/04/28/1445424.html
http://blog.csdn.net/dinglang_2009/article/details/6863697
Standard architectural layering of web systems:
http://blog.csdn.net/yinwenjie/article/details/46480485
Http://www.blogjava.net/BlueDavy/archive/2008/09/03/226749.html
3. How to implement the system architecture of these large Web sites:
A typical architecture evolution in the process of developing a common website into a large web site
Http://www.blogjava.net/BlueDavy/archive/2008/09/03/226749.html
Design Strategy
Http://www.cnblogs.com/Mainz/archive/2007/12/15/996082.html
4. Examples, the system architecture and changes of some large Web sites:
Douban System Architecture: http://www.cnblogs.com/Mainz/archive/2009/06/28/1512796.html
Large Web site-----system Architecture