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https://issues.apache.org/jira/browse/AMQ-3397?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gary Tully resolved AMQ-3397.
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Resolution: Fixed
fix in http://svn.apache.org/viewvc?rev=1144340&view=rev
Added a cache to topic message store of the store sequence ids to avoid each
ack going to the store twice.
A nice boost in throughput for active durable subs; 100 subs, 550->2200 for
2min test with mysql
That sequenceid has been there for a while to ensure message order with
overlapping transactions but the overhead for muiltiple durable subs was
excessive.
> Improve scalability of active durable subs with JDBC message store
> ------------------------------------------------------------------
>
> Key: AMQ-3397
> URL: https://issues.apache.org/jira/browse/AMQ-3397
> Project: ActiveMQ
> Issue Type: Improvement
> Components: Message Store
> Affects Versions: 5.5.0
> Environment: jdbc store
> Reporter: Gary Tully
> Assignee: Gary Tully
> Labels: durable, jdbc, scaleability, topic
> Fix For: 5.6.0
>
>
> With 1 producer, scaling from 1 to 100 durable subs, the through put drops
> off significantly.
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