60000 tx/day. suppose a trading session has 4 hours. this means ~ 7 tx/sec. In a serial trading engine (even written in java) this seems more than achivable. so make a clear cut between trading domains (u serially trade 1000 symbols on one engine, another 1000 in other engine, etc) talk to jboss using JMS and use jboss CMP (with paralellism) for persistence purposes.

>If I do not use entity beans. Is there any way to have a singleton
>Hashtable available to my application ?
more options here: www.tangosol.com, www.gemstone.com

Regards,
Horia

Davide wrote:

Hi David, thank you for your reply, I remember your precious help on the Connector mailing list.


David Jencks wrote:

you should expect a clustered solution to have slightly more latency than
an equivalently configured (with same commit option) non clustered
solution: there is more communication. However by adding more servers you
should be able to get higher throughput as well (again, with the same
commit option).


Of course, Thing is that I need to use option B on cluster as stated on Jboss docs. In this case I loose completely the caching mechanism. This is the reason because I'm seeing performances degradation.
I looked at the seppuku pattern but it's tied to BEA features.
It's very interesting the ACE pattern that it's vendor independent


http://www.theserverside.com//patterns/thread.jsp?thread_id=10610&article_count=47#35119


But also this solution implies a large code rewriting an right now I'm not able to completely evaluate it.


I am not an expert on this!!


I know, I hope to receive some suggestion from Sacha

My understanding is that guaranteed correct reads can only
be obtained with a distributed cache which is now under development.


Any planned date ;-) ?

If I do not use entity beans. Is there any way to have a singleton Hashtable available to my application ?

Thank you in advance

Davide







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