FLUSHDB

Usage:
FLUSHDB [ ASYNC | SYNC ]
Complexity:
O(N) where N is the number of keys in the selected database
Since:
1.0.0

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.

RESP2/RESP3 Reply

Simple string reply: OK.

History

Version Change
4.0.0

Added the ASYNC flushing mode modifier.
6.2.0

Added the SYNC flushing mode modifier.

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