zookeeper zab协议

http://www.cnblogs.com/aigongsi/archive/2012/09/22/2698055.html

http://www.cnblogs.com/aigongsi/archive/2012/09/21/2696773.html

http://blog.csdn.net/c289054531/article/details/15337575

http://my.oschina.net/zhengyang841117/blog/186600

http://my.oschina.net/zhengyang841117/blog/186676

http://blog.chinaunix.net/uid-26726125-id-4038581.html

http://blog.csdn.net/m_vptr/article/details/9420659

http://www.chepoo.com/tag/zookeeper-code-analysis

http://blog.sina.com.cn/s/blog_3fe961ae01012jod.html