STRLEN

Returns the length of a string value.

Usage: STRLEN key
Complexity: O(1)
Since: 2.2.0
ACL Categories: @fast, @read, @string
Command flags: READONLY, FAST

Returns the length of the string value stored at key. An error is returned when key holds a non-string value.

Examples

127.0.0.1:6379> SET mykey "Hello world"
OK
127.0.0.1:6379> STRLEN mykey
(integer) 11
127.0.0.1:6379> STRLEN nonexisting
(integer) 0

Replies

RESP2

Integer reply: the length of the string stored at key, or 0 when the key does not exist.

RESP3

Integer reply: the length of the string stored at key, or 0 when the key does not exist.