STRLEN key
Available since: 2.2.0
Time complexity: O(1)
ACL categories:
@read
@string
@fast
Returns the length of the string value stored at key.
An error is returned when key holds a non-string value.
@return
@integer-reply: the length of the string at key, or 0 when key does not
exist.
@examples
redis> SET mykey "Hello world"
TBD
redis> STRLEN mykey
TBD
redis> STRLEN nonexisting