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From Steve Vinoski <vino...@iona.com>
Subject Re: clustering
Date Fri, 22 Dec 2006 18:21:54 GMT

On Dec 22, 2006, at 1:16 PM, Carl Trieloff wrote:

> 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.
> yes, exactly - thus totem is only useful for the cluster  
> management, not the data replication. That is why I asked about  
> those pieces and not data replication.

Given that people obviously have opinions on how we should implement  
clustering, it would be nice to get them captured in the wiki. Any  


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