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https://issues.apache.org/jira/browse/JAMES-3306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17510199#comment-17510199
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Benoit Tellier commented on JAMES-3306:
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> I'm more familiar with messaging since I contributed a (small) feature to
> ActiveMQ Artemis.
Awesome! Which one? You have a link?
> Though, I understand that Pulsar is different from ActiveMQ. I'm studying
> their document. Thank god it's so well written. I'll probably ask the Pulsar
> community for direction if needed.
I recommend you this talk on the subject ;-)
https://www.youtube.com/watch?v=De6avNyQUMw&ab_channel=Devoxx
> I also have started to look at the Pulsar issues that you pointed out. This
> week I'm having exams to finish. So I hope to spend more time on this project
> and maybe start contributing something from next week.
+1
> Event Bus: about back-pressure
> ------------------------------
>
> Key: JAMES-3306
> URL: https://issues.apache.org/jira/browse/JAMES-3306
> Project: James Server
> Issue Type: New Feature
> Components: eventbus, mailbox, rabbitmq
> Affects Versions: master
> Reporter: Benoit Tellier
> Priority: Major
>
> == Why
> On UPN we prove thatwe were processing events too fast compared to the
> downstream ElasticSearch
> In a perfect world, we should handle backpressure in order to adapt event
> consumption to the downstream components.
> In the short term an admin should be able to define the paralelism expected
> for a given group, in order to reduce overhead.
> == How
> QOS is currently hard coded via the EventBus::EXECUTION_RATE variable. Allow
> to configure it in listeners.xml on a per listener basis.
> == DOD
> Enable to configure QOS on a per listener basis.
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