Question regarding poison messages feature in Quorum queue

[jesse]

Hi team, we're using 3.10.11. We came across this very useful feature for poison messages: https://www.rabbitmq.com/quorum-queues.html#poison-message-handling. However, interestingly, it seems that this feature is only supported for Quorum queues. Right now, we're in the middle of migrating to multiple RabbitMQ replicas - i.e. # of replicas = 1 at the moment without Quorum queue.

Does this mean that we cannot get the poison message handling feature until we bump up the # of replicas to 3 and move to the Quorum queue? Will moving to the Quorum queue but keeping # of replicas to 1 be a workaround for us to use the poison message handling feature (of course, this will not really give us other benefit of the quorum queue)?

Thanks in advance!

[Michal Kuratczyk]

Hi,

You can totally use quorum queues on a single-node cluster. You obviously don't get the benefits of replication but if that's not what you need, then there's nothing wrong with the idea.

Remember that quorum queues are completely different implementations (of mostly the same concepts) so while you can usually just change the queue type, the internal behaviour can be quite different.

I believe poison handling will come to classic queues at some point, but not until mirroring is removed.

Best,

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Michał

RabbitMQ team