Being Code Expert: HEXISTS command in redis

HEXISTS key field

This command returns 1 if the hash stored at the key contains the specified field. Return 0 if the key is not found or the field is not present.

TIME COMPLEXITY: O(1)

RETURN VALUE: Integer reply

Syntax:

HEXISTS KEY_NAME FIELD_NAME

Example 1: When the key and field are present

redis:6379> HEXISTS myhash field
(integer) 1

Output

Example 2: When the key and field are not present

redis:6379> HDEL myhash field1
(integer) 0

Output

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