Re: [JBoss-user] Caching large data structures

[Horia M. <ho...@bv...>]

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
> 
> 
> 
> 
> 
> 
> 
> -------------------------------------------------------
> This SF.net email is sponsored by: Etnus, makers of TotalView, The 
> debugger for complex code. Debugging C/C++ programs can leave you 
> feeling lost and disoriented. TotalView can help you find your way. 
> Available on major UNIX and Linux platforms. Try it free. www.etnus.com
> _______________________________________________
> JBoss-user mailing list
> JBo...@li...
> https://lists.sourceforge.net/lists/listinfo/jboss-user