# 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


redis> LPUSH mylist "World"
(integer) 1
redis> LPUSH mylist "Hello"
(integer) 2
redis> LLEN mylist
(integer) 2


Give these commands a try in the interactive console:


LPUSH mylist "World"
LPUSH mylist "Hello"
LLEN mylist


## Return information

{{< multitabs id="llen-return-info" 
    tab1="RESP2" 
    tab2="RESP3" >}}

[Integer reply](../../develop/reference/protocol-spec#integers): the length of the list.

-tab-sep-

[Integer reply](../../develop/reference/protocol-spec#integers): the length of the list.