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Posted to dev@activemq.apache.org by "Gary Tully (JIRA)" <ji...@apache.org> on 2011/07/08 16:48:16 UTC
[jira] [Resolved] (AMQ-3397) Improve scalability of active durable
subs with JDBC message store
[ https://issues.apache.org/jira/browse/AMQ-3397?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gary Tully resolved AMQ-3397.
-----------------------------
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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