vongosling created COMDEV-249:
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Summary: Delivery Once - Apache RocketMQ Kernel Improvement
Key: COMDEV-249
URL: https://issues.apache.org/jira/browse/COMDEV-249
Project: Community Development
Issue Type: Wish
Components: GSoC/Mentoring ideas
Reporter: vongosling
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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