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# Redis Llen Command [!(#) Redis Lists](#) The Redis LLEN command returns the length of a list. If the list key does not exist, the key is treated as an empty list and returns 0. If the key is not of list type, an error is returned. ### Syntax The basic syntax of the Redis LLEN command is as follows: redis 127.0.0.1:6379> LLEN KEY_NAME ### Available Versions >= 1.0.0 ### Return Value The length of the list. ### Example redis 127.0.0.1:6379> RPUSH list1 "foo"(integer) 1 redis 127.0.0.1:6379> RPUSH list1 "bar"(integer) 2 redis 127.0.0.1:6379> LLEN list1 (integer) 2 [!(#) Redis Lists](#)