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redis hash

在redis的value中以键值对存储数据    hset hash name x age 18 address hefei 插入元素 hget hash name    输出元素 "x" hget hash age "18" hget hash address "hefei"   hgetall hash  输出全部元素 name x age 18 address hefei   hdel  删除一个键值对 hexists