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From "Sam Starling (JIRA)" <>
Subject [jira] Commented: (AMQ-2911) Option to make all consumers retroactive
Date Mon, 27 Sep 2010 16:02:40 GMT


Sam Starling commented on AMQ-2911:

Hello - thanks for your patch, Pete. It'd be great to see this incorporated into the 5.5 release,
for those of us who are new to compiling and running ActiveMQ from source, with patches.

> Option to make all consumers retroactive
> ----------------------------------------
>                 Key: AMQ-2911
>                 URL:
>             Project: ActiveMQ
>          Issue Type: Improvement
>          Components: Broker
>            Reporter: Pete Redhead
>            Priority: Minor
>         Attachments: amq-alwaysretroactive.patch
> Our organisation uses ActiveMQ as part of our RadioVIS implementation. One feature we
found that we found was missing was the ability to treat all consumers as if they were setting
consumer.retroactive=true. i.e. when they connect to a topic, they are instantly sent the
topic's last message. 
> (We found it necessary to implement server side, as the clients come from a variety of
third-party providers, which do not implement the retroactive header).
> Included is a patch that allows this to be configured on a per-topic basis from the configuration
file, for example:
> {code:xml}
> <policyEntry topic=">" producerFlowControl="true" alwaysRetroactive="true" memoryLimit="1mb">
>   <subscriptionRecoveryPolicy>
>      <lastImageSubscriptionRecoveryPolicy />
>   </subscriptionRecoveryPolicy>
> </policyEntry>
> {code}

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