FLUSHALL - Redis — ContextQMD

{{< note >}} This command's behavior varies in clustered Redis environments. 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 set="cmds_servermgmt" step="flushall" description="Full delete: Delete all keys from all databases using FLUSHALL (dangerous operation, supports ASYNC/SYNC modes, clears RDB file)" difficulty="advanced" >}} 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 Software and Redis Cloud compatibility

| Redis Software | 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.