[rabbitmq-discuss] Help defining appropriate queue model

Michael Bridgen mikeb at rabbitmq.com
Wed Apr 20 16:03:01 BST 2011

Hi Fabio,

> it's been a long time since our last email exchange, and I've still not
> been able to dedicate some time to this issue. Things are a little too
> hectic right now for me, and I suspect the learning curve involved would
> make it event more complicated.
> If you could consider adding support for this feature whenever you have
> spare time to dedicate to this project, I'd be really grateful.
> Otherwise I guess I'll just have to put it indefinitely on hold... :/

Hectic for me too .. and LVC exchange is not currently on the rabbit 
roadmap, such as it is.  So it may be some time, I'm afraid.

You may wish to look at Jon Brisbin's experiments with Riak that have 
been mentioned here, in the meantime.

Kind regards,

> On Tue, Mar 29, 2011 at 08:35, Michael Bridgen <mikeb at rabbitmq.com
> <mailto:mikeb at rabbitmq.com>> wrote:
>     Fabio,
>             Right, at the minute the last values are transient. It probably
>             wouldn't take much coding to make it save things to disk for
>         durable
>             exchanges.
>         OK, that figures... :) I know nothing of Erlang, but I'll take an
>         overall look and try to come up with an acceptable solution for
>         my case.
>         Would that be a feature useful enough that you'd consider
>         including in
>         your code?
>     Sure!  Here's a sketch: use two mnesia tables, one ram only, for
>     non-durable exchanges, and one on disk, for durable exchanges.  In a
>     single node this will be relatively easy; if you use a cluster,
>     you'll need to find out which nodes have on-disk state.
>     Michael
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