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https://issues.apache.org/jira/browse/JAMES-3306?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17509953#comment-17509953
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Ha Anh Vu commented on JAMES-3306:
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[~btellier] thanks for your response!
I already chose the Pulsar project. I'm definitely more interested in messaging
than security and UI (even though they're all important to me). Also, I'm more
familiar with messaging since I contributed a (small) feature to ActiveMQ
Artemis.
I 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.
> 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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