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From James Strachan <james.strac...@gmail.com>
Subject Re: Clustering docs - DB Section
Date Mon, 30 Jan 2006 08:23:39 GMT

On 27 Jan 2006, at 21:16, lichtner wrote:

>
>
> On Fri, 27 Jan 2006, James Strachan wrote:
>
>>> Is anybody working on Derby clustering?
>>
>> http://sequoia.continuent.org/HomePage
>>
>> its meant to be mostly ASF licensed now; though given its L/GPL
>> heritage of C-JDBC I'd be a little cautious of the licensing
>
> It says that is the "continuation" of C-JDBC. In other words, it's the
> same project.
>
> I just took a look at the c-jdbc design and it seems that they have to
> execute writes one at a time (one insert statement at a time) -  
> because if
> you start multiple write transaction at the same time then multiple  
> sites
> could execute the writes in different orders. So it's not a good  
> general
> solution except for read-mostly applications.

Sounds a bit limited; you would have thought it was fairly easy to  
send multiple statements in a transaction as an atomic operation to  
the cluster of databases.

James
-------
http://radio.weblogs.com/0112098/


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