Redis Strlen command

Redis string (string)

Redis Strlen command is used to obtain the length of the string stored key value. When the key is not stored in a string value, an error is returned.

grammar

redis Strlen basic command syntax is as follows:

redis 127.0.0.1:6379> STRLEN KEY_NAME

Available versions

> = 2.2.0

return value

The length of the string value. When the key does not exist, 0 is returned.

Examples

# 获取字符串的长度

redis> SET mykey "Hello world"
OK

redis> STRLEN mykey
(integer) 11


# 不存在的 key 长度为 0

redis> STRLEN nonexisting
(integer) 0

Redis string (string)