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From Legolas Woodland <legola...@gmail.com>
Subject Re: Can derby instances be clustered ?
Date Wed, 26 Apr 2006 17:10:19 GMT
Michael Segel wrote:
> Derby is a very good, lightweight, general purpose, pure java relational
> database. 
> Having said that, I think it's important to choose the right tool for the
> right job.
> Derby has its historical roots as a lightweight database. It lacks certain
> features that are found in Informix or DB2 that would make clustering or
> high availability viable. (Data Warehouseing too for that matter.)
> To look at using Derby in situations where you would want to implement a
> cluster, or some form of high availability, high performance scenario, would
> not be a good idea. Its "possible" but not practical.
> But your question brings us to a point  of asking a critical question... 
> "What is the future direction of Derby?" 
> And this is a loaded question. Do you keep Derby lightweight so that it can
> be embedded in to web apps or small lightweight tasks; Or do you add
> features that will increase the size and complexity of Derby, but allow it
> to compete with proprietary databases like Sybase, Oracle, Informix, DB2,
> etc ...
> This is a design issue that needs to be addressed by Sun, IBM, Apache and,
> of course the user community at large.
> I think that for Derby to survive in the long run, it needs to determine its
> niche and then strive to be the best in that niche.
> But hey! What do I know?
> I'm just some developer who has his own opinions and vision of the future.
> ;-)
>> -----Original Message-----
>> From: Jean T. Anderson [mailto:jta@bristowhill.com]
>> Sent: Tuesday, April 25, 2006 6:33 PM
>> To: Derby Discussion
>> Subject: Re: Can derby instances be clustered ?
>> Legolas Woodland wrote:
>>> Hi
>>> Thank you for reading my post.
>>> can derby instances be clustered together ?
>>> can some one lead me to some resources or steps to cluster two instance
>>> of  derby which i run on my own computer ?
>> Sequoia supports clustering; see http://sequoia.continuent.org/HomePage .
>> Also, Emmanuel Cecchet did a presentation at ApacheCon US 2005 and it is
>> available at
>> http://www.continuent.org/uploads/sequoia/Resources/2005-12-
>> 14SequoiaApacheCon05US.pdf
>> regards,
>>  -jean
Thank you for reply.
Main reason for my questions is :
I want to learn clustering and its concepts in a web application and a 
simple database at the first step.I know derby and i though that i could 
use Derby to learn some database clustering stuff.

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