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From Kevan Miller <>
Subject Re: gcache imlementation ideas[long]
Date Fri, 15 Sep 2006 03:17:01 GMT
I'm with Jeff on this one...

I've seen this done w/ JMS. However, there's so much JMS overhead  
that you don't need (message formats, persistent messages, delivery  
semantics, etc).

I recall Jeff was talking to Hiram about ActiveIO -- that's the more  
appropriate way to go. Reuse common technology, but not all of AMQ.


On Sep 14, 2006, at 6:26 PM, Jason Dillon wrote:

> On Sep 14, 2006, at 7:56 AM, Jeff Genender wrote:
>> The JMS provider would be a pluggable comm strategy.  For performance
>> reasons, I want to start with TCP communication.
> Why do you think that AMQ will not perform well?
>> I definitely want to
>> have a JMS strategy...maybe next.  But initially I don't want any
>> dependencies on other servers or brokers.
>> With that said, after looking at openwire, the comm marshaller for
>> ActiveMQ, there is a lot to leverage there and will prevent a  
>> rewrite of
>> the comm layer.  So, there will be some use of that code base  
>> initially.
> IMO, AMQ already provides a rich clustering environment, with  
> failover, master-slave, dynamic discovery, firewall-happy  
> transports, monitoring and a heck of a lot more.
> Seems like it would be a waste to go and re-implement all of that.   
> It also seems that if you wanted to get something up sooner, that  
> it would be much easier to design a AMQ strategy first, which means  
> that you only have to worry about the message passing to sync up  
> and invalidate state, rather than all of the details of who is in  
> what cluster, failing over, blah, blah...
> And, I guess that if after that was implemented you still thought  
> it was not fast enough, then it might be better to get AMQ fixed to  
> perform better, though I don't think that the performance using AMQ  
> will differ all that much from a custom socket protocol to pass  
> messages.
> I am a huge fan of AMQ and would really like to see G exploit its  
> network communications facilities as much as possible.
> IMO, this is the best way to get the most features for clustering  
> up and running sooner, with less code to maintain.
> --jason

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