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From "vongosling (JIRA)" <j...@apache.org>
Subject [jira] [Closed] (COMDEV-249) [RocketMQ]Message Delivery Once Semantic Implementation
Date Tue, 23 Jan 2018 02:31:00 GMT

     [ https://issues.apache.org/jira/browse/COMDEV-249?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

vongosling closed COMDEV-249.
-----------------------------
    Resolution: Feedback Received

> [RocketMQ]Message Delivery Once Semantic Implementation
> -------------------------------------------------------
>
>                 Key: COMDEV-249
>                 URL: https://issues.apache.org/jira/browse/COMDEV-249
>             Project: Community Development
>          Issue Type: Wish
>          Components: GSoC/Mentoring ideas
>            Reporter: vongosling
>            Priority: Major
>
> The duplicated messages will impose the extra cost if the user needs non-repeating messages.
> In most cases, the user needs to store the consumer records to determine if a message
is duplicated, and the store stage should guarantee consistency. So we need to support a strict
and non-redundant message delivery mechanism.
> In this context, we hope to design a delivery once plugin, say, you could design a global(but
need raft guarantee multi-copy data) storage, using the hooker of RocketMQ ConsumeMessageHook
to finish the task.
>  



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