Message priority support with the quorum queue

[jesse]

Hi team, from https://www.rabbitmq.com/quorum-queues.html#feature-matrix, it seems that the message priority is not supported in the quorum queue. Is this up-to-date information? If so, any workaround?

[Michal Kuratczyk]

Quorum queues will likely get a simplified priority support in the future: https://github.com/rabbitmq/rabbitmq-server/issues/8261

By simplified, I mean just 2 priorities.

The solution right now, and if you need more priorities, is to use multiple queues. That's what priorities in classic queues under the hood

(they look like 1 queue but internally RabbitMQ maintains a queue per priority).

Best,

On Mon, Jun 5, 2023 at 8:22 PM 'jesse' via rabbitmq-users <rabbitm...@googlegroups.com> wrote:

Hi team, from https://www.rabbitmq.com/quorum-queues.html#feature-matrix, it seems that the message priority is not supported in the quorum queue. Is this up-to-date information? If so, any workaround?

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[jesse]

Thanks Michal.

> The solution right now, and if you need more priorities, is to use multiple queues. That's what priorities in classic queues under the hood

(they look like 1 queue but internally RabbitMQ maintains a queue per priority).

This makes sense at high-level, but in practice, how should I implement the consumer-side logic? Let's say we will have 3 queues, queue-high-pri, queue-mid-pri, and queue-low-pri. Then, now, a consumer should poll queues in order (queue-high-pri, queue-mid-pri, and queue-low-pri) and check a lower priority queue only when the higher priority queue does not return any message?