FLUSHDB

Syntax

FLUSHDB [ASYNC | SYNC]

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

ACL categories: @keyspace, @write, @slow, @dangerous

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

Notes

• The FLUSHDB command always deletes keys asynchronously. It only deletes keys that were present at the time the command was invoked. Keys created during the deletion will be unaffected.
• However, if the SYNC option is specified, the command waits for the deletion (which is still asynchronous) to finish. Because of this, unlike Redis/Valkey, this command never blocks other commands.

Return

Simple string reply: OK.