Shulou(Shulou.com)06/01 Report--

The basic syntax for redis EXISTS commands is as follows:

Redis 127.0.0.1 6379 > EXISTS KEY_NAME

Available version > = 1.0.0

Return value

Returns 1 if key exists, otherwise 0.

Example

Redis 127.0.0.1 redis 6379 > EXISTS w3cschoolcc-new-key (integer) 0

Now let's create a key named w3cschoolcc-new-key and assign it, and then use the EXISTS command.

Redis 127.0.0.1 1redis 6379 > set w3cschoolcc-new-key newkeyOKredis 127.0.0.1 1redis 6379 > EXISTS w3cschoolcc-new-key (integer)

These are the details of redis's judgment on the existence of key. Please pay more attention to other related articles!

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