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Re: Caching driver on pgFoundry?

From: Dave Cramer <pg(at)fastcrypt(dot)com>
To: Kris Jurka <books(at)ejurka(dot)com>
Cc: Josh Berkus <josh(at)agliodbs(dot)com>, Heikki Linnakangas <heikki(at)enterprisedb(dot)com>, pgsql-jdbc(at)postgresql(dot)org
Subject: Re: Caching driver on pgFoundry?
Date: 2007-09-05 18:00:01
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-jdbc
On 5-Sep-07, at 1:27 PM, Kris Jurka wrote:

> On Wed, 5 Sep 2007, Josh Berkus wrote:
>>> Can't you use DBCP or some other open source statement cache
>>> implementation that's in a more mature state?
>> Unfortunately, no.  The benchmark is already out.
> But that benchmark was run with a different caching implementation  
> than the wrapper version, so I'm not sure how that's relevant.   
> When Sun chose to use unpublished and unreviewed code for the  
> benchmark they got themselves in a little bind and I'm not sure  
> it's our job to bail them out by publishing and advertising code  
> that we're not confident in.  Heikki, Oliver, and myself did not  
> believe the code used by Sun in the benchmark was correct in the  
> general case so it was rejected for inclusion in the core driver.

So as I understand it the objection to the caching implementation is  
that  statement caching belongs in the app server ?

If this is the case then I would argue that having caching in the  
appserver is a great idea for everyone using an appserver it does not  
help the rest of the world that doesn't use an app server.

Is there a technical argument here ?


> Dave/Lazlo have since started a new implemention on pgfoundry, but  
> that was never discussed with the JDBC list or submitted for  
> inclusion.
> To satisfy the benchmark requirements, Sun should publish the code/ 
> driver actually used in the benchmark somewhere on Sun's website  
> and, if honest, should recommend that people don't use it.  From  
> there we should try to gather some consensus on whether PG needs  
> its own statement cache implementation and then rerun the  
> benchmarks with it or some other implementation.
> Kris Jurka
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> TIP 4: Have you searched our list archives?

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