flushdb.3valkey - Man Page

FLUSHDB [ASYNC | SYNC]

Delete all the keys of the currently selected DB. This command never fails.

By default, FLUSHDB will synchronously flush all keys from the database. 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 database asynchronously
• SYNC: flushes the database synchronously

Note: an asynchronous FLUSHDB command only deletes keys that were present at the time the command was invoked. Keys created during an asynchronous flush will be unaffected.

valkey-protocol(7) Simple string reply: OK.

O(N) where N is the number of keys in the selected database

@dangerous @keyspace @slow @write

• Available since: 1.0.0
• Changed in 4.0.0: Added the ASYNC flushing mode modifier.
• Changed in 6.2.0: Added the SYNC flushing mode modifier.

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