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From lichtner <licht...@bway.net>
Subject Re: clustering
Date Fri, 22 Dec 2006 19:02:33 GMT

On Fri, 22 Dec 2006, Tim Fox wrote:

> Personally I would never use a total ordering protocol (e.g. totem) to
> implement clustering for messaging.
>
> Naive clustering approaches often try to replicate the queue state
> machine across different nodes, and require some kind of total ordering
> to ensure the states are consistent.
>
> You'll find this approach doesn't scale, since every replica in the
> cluster has to receive all updates from every other node. Therefore the
> amount of load on a particular node increases linearly with the number
> of nodes in the cluster.

But I am proposing that all queues be available on all nodes. So all the
nodes do need to see all the messages.

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