Redis 是一个Key-Value 存储系统。和Memcached 类似，它支持存储的value 类型相对更多， 包括string(字符串)、list(链表)、set(集合)和zset(有序集合)-Redis is a Key-Value storage system. And Memcached Similarly, it supports value type of storage is relatively more, Including string (string), lis