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Flush all Redis databases (FLUSHALL)

destructiveRedis and Memcacheddebian, ubuntu
user@server
redis-cli FLUSHALL

Empties all databases of the server at once, unlike FLUSHDB, which only affects the selected database. On a server with several websites, all of them lose their cache at the same time, which briefly causes high load on PHP and MySQL. If persistence is enabled, the saved dataset is also overwritten on the next save.

Note: Only use this when you really mean the whole server. Sessions, queues and other persistent data in Redis are lost as well.

Also searched as

  • clear entire redis cache
  • flush all redis data
  • run redis flushall

Related one-liners

All in Redis and Memcached

Flush a single Redis database (FLUSHDB)

$redis-cli -n 0 FLUSHDB
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Check the Redis Object Cache status in WordPress

$wp redis status --path=/var/www/vhosts/example.com/httpdocs
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Check whether Redis is reachable

$redis-cli -h 127.0.0.1 -p 6379 ping
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Connect to Redis over a Unix socket

$redis-cli -s /run/redis/redis-server.sock ping
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Count Redis keys by pattern without blocking the server

$redis-cli -n 0 --scan --pattern '*transient*' | wc -l
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Count the keys in a Redis database

$redis-cli -n 0 DBSIZE
harmlessRedis and Memcached

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The commands on myline.de act directly on servers, files and databases. A wrong path or placeholder can delete data irreversibly or make a server unreachable.

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