分布式事务底层原理剖析
https://mp.weixin.qq.com/s/3Q61VwndSJpSZvnAirPaSg
2p 3p CAP定理
http://www.cnblogs.com/congsg2016/p/5400958.html
分布式一致性算法Paxos介绍
https://segmentfault.com/a/1190000005717258
http://blog.youkuaiyun.com/cnh294141800/article/details/53768464
undo和redo的区别
http://meng702.iteye.com/blog/1008638
http://liwenshui322.iteye.com/blog/1488949
http://blog.163.com/jing_playboy/blog/static/757362222012520104521864/