flushall.md

acl_categories	@keyspace @write @slow @dangerous
arguments	arguments name optional type display_text name since token type async async 4.0.0 ASYNC pure-token display_text name since token type sync sync 6.2.0 SYNC pure-token flush-type true oneof
arity	-1
categories	docs develop stack oss rs rc oss kubernetes clients
command_flags	write
complexity	O(N) where N is the total number of keys in all databases
description	Removes all keys from all databases.
group	server
hidden	false
hints	request_policy:all_shards response_policy:all_succeeded
history	4.0.0 Added the `ASYNC` flushing mode modifier. 6.2.0 Added the `SYNC` flushing mode modifier.
linkTitle	FLUSHALL
railroad_diagram	/images/railroad/flushall.svg
since	1.0.0
summary	Removes all keys from all databases.
syntax_fmt	FLUSHALL [ASYNC | SYNC]
title	FLUSHALL

{{< note >}} This command is affected by cross-slot operations. See the [multi-key operations]({{< relref "/develop/using-commands/multi-key-operations" >}}) page for more information. {{< /note >}}

Delete all the keys of all the existing databases, not just the currently selected one. This command never fails.

By default, FLUSHALL will synchronously flush all the databases. Starting with Redis 6.2, setting the lazyfree-lazy-user-flush configuration directive to "yes" changes the default flush mode to asynchronous.

It is possible to use one of the following modifiers to dictate the flushing mode explicitly:

• ASYNC: flushes the databases asynchronously
• SYNC: flushes the databases synchronously

{{< clients-example cmds_servermgmt flushall >}} FLUSHALL SYNC {{< /clients-example >}}

Notes

• An asynchronous FLUSHALL command only deletes keys that were present at the time the command was invoked. Keys created during an asynchronous flush will be unaffected.
• This command does not delete functions.
• Other than emptying all databases (similar to FLUSHDB), this command clears the RDB persistence file, aborts any snapshot that is in progress, and, if the save config is enabled, saves an empty RDB file.

Behavior change history

• >= 6.2.0: Default flush behavior now configurable by the lazyfree-lazy-user-flush configuration directive.

Redis Enterprise and Redis Cloud compatibility

Redis Enterprise	Redis Cloud	Notes
✅ Standard ❌ Active-Active*	✅ Standard ❌ Active-Active	*Can use the [Active-Active flush API request]({{< relref "/operate/rs/references/rest-api/requests/crdbs/flush" >}}).

Return information

{{< multitabs id="flushall-return-info" tab1="RESP2" tab2="RESP3" >}}

Simple string reply: OK.

-tab-sep-

Simple string reply: OK.

{{< /multitabs >}}