[rabbitmq-discuss] New to AMQP - Who Declares Exchange

[bradford]

Yes it does.  Thank you.  So, then it makes sense for both the
publisher and consumer to both declare the exchange.

Thanks,
Bradford

On Tue, Sep 2, 2008 at 8:29 PM, Ben Hood <0x6e6562 at gmail.com> wrote:
> Bradford,
>
> On Wed, Sep 3, 2008 at 12:30 AM, newps <fingermark at gmail.com> wrote:
>>
>> I'm interested in creating a topic exchange.  Which entity should declare the
>> exchange:  the publisher or subscriber?  And why?
>
> Not wanting to be overly theoretical, but the AMQP working group is
> now moving to a more formal definition of declarations that mean that
> they have the same semantics as an assertion.
>
> So by saying declare queue q  or declare exchange x, you are
> effectively saying "I assert the existence of object o, if it does not
> exist, make it so".
>
> Publishers need to write to somewhere.
>
> Consumers need to have queues bound to something.
>
> So both sides are only interested in the mere existence of the thing
> they need to do their job, not whether they or some other guy
> originally initiated that object's creation.
>
> Does that answer your question?
>
> Ben
>