redis系列文章
http://blog.csdn.net/liubenlong007/article/details/53690103
持久化
https://juejin.im/post/5bb02c42e51d450e92524b6f
redis数据类型与应用
https://juejin.im/post/5b4dd82ee51d451925629622
redis集群
https://juejin.im/post/5caa02c86fb9a05e2f23d6a9
redis内存淘汰策略
https://juejin.im/post/5d674ac2e51d4557ca7fdd70
谣言协议
