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Redis HLEN command is used to get the number of fields contained in the hash stored at the key.

Return Value

Integer reply, number of fields in the hash, or 0 when the key does not exist.

Syntax

Following is the basic syntax of Redis HLEN command.

redis 127.0.0.1:6379> HLEN KEY_NAME

Example

redis 127.0.0.1:6379> HSET myhash field1 "foo" 
(integer) 1 
redis 127.0.0.1:6379> HSET myhash field2 "bar" 
(integer) 1 
redis 127.0.0.1:6379> HLEN myhash 
(integer) 2