Redis hstrlen 命令

HSTRLEN key field

Returns the string length of the value associated with field in the hash stored at key. If the key or the field do not exist, 0 is returned.

*返回值

Integer reply: the string length of the value associated with field, or zero when field is not present in the hash or key does not exist at all.

*实例

redis>  HMSET myhash f1 HelloWorld f2 99 f3 -256

"OK"

redis>  HSTRLEN myhash f1

(integer) 10

redis>  HSTRLEN myhash f2

(integer) 2

redis>  HSTRLEN myhash f3

(integer) 4

redis>