[openstack-dev] [Zaqar] Comments on the concerns arose during the TC meeting

Zane Bitter zbitter at redhat.com
Fri Sep 12 13:06:45 UTC 2014


On 12/09/14 04:50, Flavio Percoco wrote:
> On 09/12/2014 12:14 AM, Zane Bitter wrote:
>> >However, Zaqar also supports the Pub-Sub model of messaging. I believe,
>> >but would like Flavio to confirm, that this is what is meant when the
>> >Zaqar team say that Zaqar is about messaging in general and not just
>> >queuing. That is to say, it is possible for multiple consumers to
>> >intentionally consume the same message, with each maintaining its own
>> >pointer in the queue. (Another way to think of this is that messages can
>> >be multicast to multiple virtual queues, with data de-duplication
>> >between them.) To a relative novice in the field like me, the difference
>> >between this and queuing sounds pretty academic :P. Call it what you
>> >will, it seems like a reasonable thing to implement to me.
>
> Correct, this and other messaging patterns supported by Zaqar make it a
> messaging service, which as Gordon mentioned in another email is just a
> more generic term. Messages are the most important resource in Zaqar and
> providing good, common and scalable patterns to access those messages is
> what we strive for in Zaqar's API.

Thanks Flavio! I think we are more or less on the same page :)

Maybe you could clarify what the "other messaging patterns" are exactly, 
since that seems to be one of the points of confusion/contention.

cheers,
Zane.



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