[rabbitmq-discuss] Symmetric federation behavior

Busoli, Simone Simone.Busoli at ferrari.com
Thu Mar 1 15:21:21 GMT 2012

If we were sure this is going to be out in the release after the next one we could think of living with the bandwidth consumption for a while until there is a solution for it. 
I'm guessing you're going to have some planning sessions before then so I would be glad if you could get back to me as soon as you agree on whether it is going to be included in that release.
Thanks for your help so far.

Cheers, Simone

-----Original Message-----
From: Simon MacMullen [mailto:simon at rabbitmq.com] 
Sent: giovedì 1 marzo 2012 16:16
To: Busoli, Simone
Cc: rabbitmq-discuss at lists.rabbitmq.com
Subject: Re: [rabbitmq-discuss] Symmetric federation behavior

On 01/03/12 15:09, Busoli, Simone wrote:
> Thanks Simon, I'll look into the options you described. Out of 
> curiosity, to someone who knows how the federation behavior is 
> implemented in code, how feasible is it to change it to suite the 
> scenario I've been describing if I started looking into it?

The main issue is that the decision needs to be handled upstream - therefore the intermediate upstream exchange (currently a fanout) needs to be something a bit smarter, so we need a new x-federation-upstream-helper type or something. This then has knock on effects in that it would be nice to still support the case where federation is not installed upstream, so we need to detect this and fall back.

The next release is likely within a week or so, so this will probably not happen before then. But the release after that could easily include this enhancement.

Cheers, Simon

Simon MacMullen
RabbitMQ, VMware

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