Redis RANDOMKEY command

Redis key (key)

Redis RANDOMKEY command returns a random key from the current database.

grammar

redis RANDOMKEY basic command syntax is as follows:

redis 127.0.0.1:6379> RANDOMKEY 

Available versions

> = 1.0.0

return value

When the database is not empty, return a key. When the database is empty, it returns nil.

Examples

# 数据库不为空

redis> MSET fruit "apple" drink "beer" food "cookies"   # 设置多个 key
OK

redis> RANDOMKEY
"fruit"

redis> RANDOMKEY
"food"

redis> KEYS *    # 查看数据库内所有key，证明 RANDOMKEY 并不删除 key
1) "food"
2) "drink"
3) "fruit"


# 数据库为空

redis> FLUSHDB  # 删除当前数据库所有 key
OK

redis> RANDOMKEY
(nil)

Redis key (key)