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From cobrien <clark.obr...@ttmsolutions.com>
Subject Re: Enable durable subscribers to receive previously published msgs
Date Sat, 31 Jul 2010 21:28:06 GMT

Hi,
The functionality you are describing is handled by a Retroactive Consumer
and governed by Subscription Recovery Policy. You can read about these
features at the links below. Be sure to read the limitations of retroactive
consumers. 

http://activemq.apache.org/retroactive-consumer.html
http://activemq.apache.org/subscription-recovery-policy.html

Clark 
PS
Great to hear ActiveMQ is being used in the cloud!  Would love to hear if
you are scaling ActiveMQ across images or using ActiveMQ as a cloud entry
point. 



www.ttmsolutions.com 
ActiveMQ reference guide at 
http://bit.ly/AMQRefGuide


andy95014 wrote:
> 
> I try to use ActiveMQ in a cloud computing environment. All consumers are
> durable, since they could not afford to miss any msgs. The challenge is to
> ensure durable consumers to receive previously published msgs.
> 
> Let's say that a persistent msg M arrives for a brand new topic T, and we
> don't have any durable subscribers for T at that point. I need to make
> sure that such a msg M will be reliablly delivered to future subscribers,
> even if those subscribers show up after restart of AQ broker.
> 
> Thanks in advance for any suggestions. 
> 

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