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From Eric-AWL <eric.vinc...@atosorigin.com>
Subject Re: Automatic delete of expired messages
Date Wed, 16 Dec 2009 15:55:55 GMT

Today, I don't use persistent messages at all, and just want to release
memory resources when messages are no longer valid.

Do you confirm me that the number of consumers (0 here), that is found into
Advisory messages, is not changed by this automatic behaviour ?  It's
important for us to know the exact number of accessible consumers.

Eric-AWL


Joe Fernandez wrote:
> 
> You might also want to look into the DiscardingDLQBroker plugin. 
> 
> See bottom of this page
> 
> http://activemq.apache.org/message-redelivery-and-dlq-handling.html
> 
> Joe
> http://www.ttmsolutions.com
> 
> 
> Eric-AWL wrote:
>> 
>> Hi Joe.
>> 
>> Thank you very much for your answer.
>> 
>> Eric-AWL.
>> 
>> 
>> Joe Fernandez wrote:
>>> 
>>> With AMQ 5.3, non-persistent messages that expire are automatically
>>> removed/deleted from their destination. Persistent messages are moved to
>>> the DLQ. 
>>> 
>>> By default, the destination sweeps occur every 30 seconds. You can
>>> change this default via the 'expireMessagesPeriod' property. 
>>> 
>>> Joe
>>> http://www.ttmsolutions.com
>>> 
>>> 
>>> Eric-AWL wrote:
>>>> 
>>>> Hi
>>>> 
>>>> I don't use persistance, I don't use transaction, I don't use
>>>> CLIENT_ACKNOWLEDGE, only automatic aknowledge.
>>>> 
>>>> I just saw in some JIRA recent exchanges that there seems to be an
>>>> official trick that automatically delete expired messages when there is
>>>> no consumer for a queue or a topic.
>>>> 
>>>> Can someone explain me the "official" way to do this, and the ActiveMQ
>>>> configuration to define ?
>>>> 
>>>> Is the number of consumers for a destination (that can be found by
>>>> analyzing Adivisory Messages) increased when this trick is used ?
>>>> 
>>>> Thank you in advance
>>>> Eric-AWL
>>>> 
>>>> 
>>>> 
>>> 
>>> 
>> 
>> 
> 
> 

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