LLEN

Returns the length of the list stored at key. If key does not exist, it is interpreted as an empty list and 0 is returned. An error is returned when the value stored at key is not a list.

Examples

127.0.0.1:6379> LPUSH mylist "World"
(integer) 1
127.0.0.1:6379> LPUSH mylist "Hello"
(integer) 2
127.0.0.1:6379> LLEN mylist
(integer) 2