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From Rob Godfrey <rob.j.godf...@gmail.com>
Subject Re: Implementing consumer broadcast with a single queue with Qpid Java Broker 6.0.4
Date Mon, 09 Jan 2017 14:39:59 GMT
Hi Antoine,

I'm not sure I'm totally clear on what you mean by "I cannot lose messages"
in this context.  Are you saying that if a consumer is connected, then it
should receive all messages which arrive on the "topic" from the point at
which it connects; but once all consumers have seen a message (or if there
are no consumers connected) it is OK for the message to be deleted?

-- Rob

On 9 January 2017 at 14:34, Antoine Chevin <antoine.chevin@gmail.com> wrote:

> Hello,
> I analyzed if it is possible to broadcast messages using a single queue. I
> know I could make the consumers listen to a topic but I noticed that a
> temporary queue is created on the broker and I'm afraid of the broker
> performance if hundreds of consumers listen to the topic.
> So far, I managed to broadcast in 2 ways:
> - configure a queue on the broker configured with
> "ensureNondestructiveConsumers" and a default filter with a replay period
> to not receive all the message when a consumer connect. The problem is that
> the messages on the queue are never cleared. A TTL can solve that but I
> cannot lose messages.
> - configure the dispatch router 0.6.1 to listen to the broker and expose an
> address with the distribution "multicast". This works very well.
> To cover use cases where only the Qpid java broker can be used, I wonder if
> you know other solutions to broadcast a message to consumers using a single
> queue?
> Thanks in advance,
> Best regards,
> Antoine

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