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https://issues.apache.org/jira/browse/JAMES-3604?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benoit Tellier closed JAMES-3604.
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Resolution: Fixed
Colsing for now, I will provide details on how their deployment went on
@linagora
> RabbitMQ: allow the use of quorum queues
> ----------------------------------------
>
> Key: JAMES-3604
> URL: https://issues.apache.org/jira/browse/JAMES-3604
> Project: James Server
> Issue Type: Improvement
> Components: rabbitmq
> Affects Versions: 3.6.0
> Reporter: Benoit Tellier
> Priority: Major
> Fix For: 3.7.0
>
> Time Spent: 5h 10m
> Remaining Estimate: 0h
>
> Having watched a talk about quorum queues [1] and read [2] RabbitMQ HA guide
> and [3] RabbitMQ Quorum Queue guide, setting up a higly available RabbitMQ
> cluster should be reasonnably easy.
> - Exchanges (and their bindings) are replicated out of the box to all nodes.
> - Queues can be declared as "quorum" and thus uses RAFT algorithm for
> replication.
> This can be done via the use of `x-queue-type` with value `quorum`. Also
> `x-quorum-initial-group-size` allow controlling the replication factor.
> We should allow to choose between `classic` queues or `quorum` queues based
> on the configuration. (classic queues are likely faster in a single queue
> case).
> - We likely SHOULD use publish-confirms (we don't...)
> Regarding limitations...
> > Consumers should use manual acknowledgements to ensure messages that aren't
> > successfully processed are returned to the queue so that another consumer
> > can re-attempt processing.
> So it is meaningless to switch our auto-ack queues to quorum queues.
> > In some cases quorum queues should not be used. They typically involve
> > [...] exclusive queues.
> So let's not switch our exclusive queues to it.
> This means we can turn the EventBus and MailQueue work queues to use quorum
> queues.
> [1]
> https://tanzu.vmware.com/content/webinars/jun-11-ha-and-data-safety-in-messaging-quorum-queues-in-rabbitmq?utm_campaign=Global_BT_Q221_RabbitMQ-Data-Safety-in-Messaging&utm_source=rabbitmq&utm_medium=website
> [2] https://www.rabbitmq.com/clustering.html
> [3] https://www.rabbitmq.com/quorum-queues.html
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