How to clear data in redis

The Redis Flushall command is used to clear the data of the entire Redis server (delete all keys of all databases).

Syntax

The basic syntax of the redis Flushall command is as follows:

redis 127.0.0.1:6379> FLUSHALL

Available versions

>= 1.0.0

Return value

Always returns OK.

Example

redis 127.0.0.1:6379> DBSIZE            # 0 号数据库的 key 数量
(integer) 9
 
redis 127.0.0.1:6379> SELECT 1          # 切换到 1 号数据库
OK
 
redis 127.0.0.1:6379> DBSIZE         # 1 号数据库的 key 数量
(integer) 6
 
redis 127.0.0.1:6379> flushall       # 清空所有数据库的所有 key
OK
 
redis 127.0.0.1:6379> DBSIZE         # 不但 1 号数据库被清空了
(integer) 0
 
redis 127.0.0.1:6379> SELECT 0       # 0 号数据库(以及其他所有数据库)也一样
OK
 
redis 127.0.0.1:6379> DBSIZE
(integer) 0

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