[rabbitmq-discuss] losing messages

Wed Sep 11 16:35:59 BST 2013

Thanks to all...

		Michel Grenier
		(514) 421-7204

-----Original Message-----
From: rabbitmq-discuss-bounces at lists.rabbitmq.com
[mailto:rabbitmq-discuss-bounces at lists.rabbitmq.com] On Behalf Of
Michael Klishin
Sent: 11 September, 2013 11:16
To: Discussions about RabbitMQ
Subject: Re: [rabbitmq-discuss] losing messages

Grenier,Michel [CMC]:

> When I stop my consumer the exchange is deleted in the rabbitmq server

> (rabbitmq-management shows that)
> even if the publishers are still feeding ???   Is this normal ?

I assume you use use auto-delete queues as well, so when your consumer
goes away, the queue is deleted, so is the binding, and you
*auto-delete* exchange goes away as well, regardless of whether there
are attempts to publish messages to that exchange.

> Restarting the consumer, the exchange is "recreated"  but it seems 
> that some (or sometimes all) the bindings with the publishers are 
> broken ???

If the exchange was deleted, how can the bindings be around?

Sounds like you want an non-auto-delete exchange. Queues can be
auto-deleted if you really need them to be, however, if there are no
queues bound to an exchange, attempts to publish a message there will
result in messages going nowhere by default.

You can publish with mandatory = true or use AE extension [1], or make
queues stick around.

1. http://www.rabbitmq.com/ae.html

MK