[rabbitmq-discuss] Queue clustering

[Alexis Richardson]

Ben

I've just been ticked off for my lack of clarity by a colleague :-)

To be clear - my remarks were intended to apply to both uses of Mnesia, i.e.

- for clustering queues as well as exchanges, in the transient case,
without necessarily committing to committing to disk
- for persistence in its several forms

alexis


On Nov 14, 2007 1:14 PM, Alexis Richardson
<alexis.richardson at cohesiveft.com> wrote:
> Ben
>
> We used logfiles to persist queues for speed and as a known best practice.
>
> Using mnesia for persisting queues is a good idea for several reasons,
> not least the manageability and quality of mnesia, but of course also
> to provide several queue failover patterns 'out of the box'.  Other
> persistence models may also be attractive.
>
> We'd planned to look at this in more detail after AMQP 0-10 is out
> because that will define some of the failover and HA behaviours for
> AMQP.  Given that 0-10 is on its way soon, we've begun to look at this
> informally, and would be delighted to move that discussion 'on list'.
> What ideas would you recommend pursuing first?  Our back-of-envelope
> idea was, very simply, to see how a broker would perform with mnesia
> instead of the current logger, using a bit of custom coding.  This
> might suggest good ways to go forward more systematically, and indeed
> if this was even a good idea to pursue.
>
> Thoughts?
>
> alexis
>
>
>
>
>
>
>
>
> On Nov 14, 2007 7:53 AM, Ben Hood <0x6e6562 at gmail.com> wrote:
> > Dear list,
> >
> > This is probably a stupid question, but why is mnesia not suitable for
> > backing queues?
> >
> > Given that rabbit already uses mnesia to replicate exchange state, and
> > that you get a reference to the first and last items of a sorted
> > table, is there some obvious problem with using mnesia that I can't see?
> >
> > Ben
> >
> > _______________________________________________
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> > rabbitmq-discuss at lists.rabbitmq.com
> > http://lists.rabbitmq.com/cgi-bin/mailman/listinfo/rabbitmq-discuss
> >
>
>
>
> --
> Alexis Richardson
> +44 20 7617 7339 (UK)
> +44 77 9865 2911 (cell)
> +1 650 206 2517 (US)
>



-- 
Alexis Richardson
+44 20 7617 7339 (UK)
+44 77 9865 2911 (cell)
+1 650 206 2517 (US)