Docs › Commands › ServerFLUSHALLSince 1.1.0ServerSyntaxFLUSHALLFlags: writeACL categories: @dangerous, @server, @slow, @writeArity: -1Deletes every key of every database. ASYNC frees them in the background, SYNC at once. Examples > FLUSHALL SYNC OK Related commandsFAILOVERFLUSHDBECHOHELLODEBUGINFODBSIZELASTSAVECONFIGLOLWUT