Nosql database

http://kb.cnblogs.com/page/42731/

http://nosql-database.org/

http://blog.jobbole.com/1344/

http://www.infoq.com/cn/news/2011/01/nosql-why/

http://www.cnblogs.com/sunli/archive/2011/05/11/mysql-nosql.html

http://news.zol.com.cn/article/172812.html

http://blog.s135.com/tags/memcached/1/