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From David Van Couvering <David.Vancouver...@Sun.COM>
Subject In-memory store implementation available for contribution (was: Re: derby-user Digest 20 May 2006 17:44:25 -0000 Issue 322)
Date Mon, 22 May 2006 23:24:14 GMT
Great!  I'm not sure what you mean by "a copy of the jar file" but we'd 
of course like to see the source, not just the binaries.

The student must explicitly indicate that he is handing over the code to 
the ASF. The normal way this is done is to create a JIRA item (our bug 
tracking system) and then put the changes he's made as an attachment to 
this JIRA item, indicating he is granting the code to the ASF.  I'd be 
happy to help guide the student through this process.  Better yet, we 
should have one of our store experts work with the student to look at 
getting his code in.  Any volunteers?


Darcy Benoit wrote:
> I had a student implement an in-memory version of Derby for his honours 
> thesis. I am under the impression that the code is just about ready to 
> submit to the code tree. I can get you a copy of the jar file with the 
> in-memory implementation if you want, but I am not sure that it has pass 
> the derby-all testing.
> darcy
> On Sat, 20 May 2006 14:44:25 -0300, 
> <derby-user-digest-help@db.apache.org> wrote:
>> Date:     Thu, 18 May 2006 10:40:42 -0700   
>> From:     David Van Couvering <David.Vancouvering@Sun.COM>   
>> Subject:     Re: High throughput, min durability - tuning   
>> To:     derby-dev@db.apache.org   
>> Cc:     derby-user@db.apache.org, ashwinjay <ashwinjay@rediffmail.com>   
>> Well, I have a couple of thoughts:
>> - Depending upon your OS, often the /tmp directory is actually mapped 
>> to memory, not disk.  You might
>> try putting your database in /tmp
>> - There has been a proposal and I think some work on implementing an 
>> in-memory implementation of the
>> store interface.  I would highly recommend you think about building 
>> this yourself.  There are experts
>> on the team who would be more than glad to guide you in this effort.  
>> If nothing else you would learn
>> some of the itnernals really well which could only help you in your 
>> efforts to tune the system.
>> David
> --Dr. Darcy Benoit
> http://cs.acadiau.ca/~dbenoit/

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