EXEC

Since 1.1.0Transactions

Syntax

EXEC
  • ACL categories: @slow, @transaction
  • Arity: 1

Runs the commands queued since MULTI, as one step: no other client's command that could see their keys starts between two of them, reads included, so nobody sees the transaction half done.

A command that fails while running does not stop the others: its error is its element of the reply. A command refused while queueing (an unknown command, a wrong number of arguments) makes EXEC run nothing.

If a key WATCHed before MULTI was changed by anyone since, EXEC runs nothing.

Reply

  • An array with each queued command's reply.
  • nil if a watched key had changed.
  • EXECABORT Transaction discarded because of previous errors. if a command was refused while queueing.
  • ERR EXEC without MULTI outside a transaction.

Examples

> MULTI
OK
> SET k v
QUEUED
> INCR k
QUEUED
> SET k2 v2
QUEUED
> EXEC
1) OK
2) (error) ERR value is not an integer or out of range
3) OK

A queueing error:

> MULTI
OK
> NOSUCHCMD
(error) ERR unknown command 'NOSUCHCMD', with args beginning with:
> EXEC
(error) EXECABORT Transaction discarded because of previous errors.