:Does MNS support the FIFO method across queues?

No, MNS does not support the first-in, first-out (FIFO) method across queues. This topic describes how to ensure the order of messages in Message Service (MNS).

Message Service (MNS) does not guarantee the order in which messages are consumed due to the data striping feature. If your business requires a strict message consumption order, add the SeqId parameter when you send messages in MNS. Then, the messages can be sorted at consumer clients. For more information, see Ensure ordering of queue messages.