[rabbitmq-discuss] RabbitMQ stomp-adapter behaviour

Gavin M. Roy gmr at myyearbook.com
Wed Jun 10 18:26:35 BST 2009

On Wed, Jun 10, 2009 at 12:35 PM, Matthias Radestock <matthias at lshift.net>wrote:

> From your and other peoples' comments I gather that with the default
> behaviour it should be possible to SEND messages to a destination even
> when there are no (and never have been any) subscribers for that
> destination. The messages should be queued and delivered to future
> clients when they subsequently SUBSCRIBE to that destination.
> Correct?


> Now, declaring queues implicitly on SEND and SUBSCRIBE is all very well,
> but how & when do we get rid of them? Setting "auto-delete = false" has
> the unfortunate side effect of the queues sticking around forever, even
> when they have no messages or subscribers. That does not matter much if
> there are a finite and small(ish) number of possible destinations. But
> when there are many destinations, only some of which are in use at any
> given time, then server resources can be exhausted.
> I can think of various approaches to address this problem, but none are
> very pleasant.

How about defaulting to auto-delete = true, but allowing one to override it
in rabbitmq.conf:

           stomp_listeners [{"",61613}]
           queue_default_parameters [{"auto-delete: false"}]

Or something along those lines?
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