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Time complexity: Depends on commands in the transaction

ACL categories: @slow, @transaction

Executes all previously queued commands in a transaction and restores the connection state to normal.

When using WATCH, EXEC will execute commands only if the watched keys were not modified, allowing for a check-and-set mechanism.


Array reply: each element being the reply to each of the commands in the atomic transaction.

When using WATCH, EXEC can return a Null reply if the execution was aborted.