Redis EXISTS 命令

更新时间: 2019-07-07 15:54

Redis EXISTS 命令用于检查给定 key 是否存在。

语法

redis 127.0.0.1:6379> EXISTS KEY_NAME

返回值

若 key 存在返回 1 ，否则返回 0 。

实例

127.0.0.1:6379> exists domain
(integer) 0
127.0.0.1:6379> set domain www.codercto.com
OK
127.0.0.1:6379> exists domain
(integer) 1

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