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From Andrus Adamchik <and...@objectstyle.org>
Subject Re: NuoDB Cayenne Adaptor
Date Wed, 22 Aug 2012 19:44:25 GMT
Hi Malcolm,

Certainly interested to see how this project goes. 

I watched the webinar and I am sure this thing can't be nowhere near ACID. But as long as
it supports joins, has a JDBC driver, and can store more than a few gigabytes of data, it'll
be good enough for many applications :)

Good luck,
Andrus


On Aug 15, 2012, at 3:01 PM, Malcolm Edgar wrote:
> Hi Guys,
> 
> Thanks for the feedback.
> 
> In terms of my interest, I have no relationship with NuoDB at all.
> 
> The company I work for Avoka Technologies provide a forms hosting platform
> for large government and corporates.  We use/love Cayenne and support
> Oracle, SQL Server, MySQL databases.  Generally Oracle and SQL Server are
> used for on-premise installations and we use MySQL for a cloud offering
> (Amazon RDS).
> 
> For us we have no performance problems with relational databases. By using
> Cayenne caching intelligently we can handle very high loads.  However when
> it comes to providing a High Availability solution across multiple data
> centers things become much harder.
> 
> The database vendors have different approaches to this problem, but
> generally use a primary active database in data center 1 and a standby
> database in data center 2.  Microsoft provides a new capability to support
> this in SQL Server 2012 AlwaysOn, for MySQL there is Continuent, for Oracle
> there is RAC with Data Guard.
> 
> All these HA approaches are inherently complex to setup and administer.
> 
> NuoDB offers fresh approach at this problem. The video below gives a good
> overview:
> 
> http://vimeo.com/33785505
> 
> I looked at early beta's of NuoDB about 8 months ago, and it was too
> unstable at this point. Whether NuoDB becomes a viable player in the market
> is open to question. Building SQL databases is hard, but they do have
> people like Jim Starkey on board and some serious Venture Captial backing
> 
> I don't think adding NuoDB support to Cayenne would be trivial, as they
> have their own DDL and SQL dialect as does every database vendor. I wished
> they had a MySQL emulation mode.
> 
> Again I have no direct commercial interest in this, and would look at
> contributing/developing this code in the Cayenne project if people were
> interested.
> 
> regards Malcolm Edgar
> 
> On Wed, Aug 15, 2012 at 9:15 AM, Aristedes Maniatis <ari@maniatis.org>wrote:
> 
>> On 14/08/12 11:32pm, Aristedes Maniatis wrote:
>> 
>>> On 14/08/12 10:00pm, Malcolm Edgar wrote:
>>> 
>>>> Hi All,
>>>> 
>>>> I am interested in developing a Cayenne Adaptor for the NuoDB database
>>>> https://www.nuodb.com/
>>>> 
>>>> Its a very interesting database technology for developing scale out /
>>>> high
>>>> availability solutions. The stuff that relational databases struggle
>>>> with.
>>>> 
>>>> Presumably to get started I would need to create a NuoDBAdaptor
>>>> extending *
>>>> org.apache.cayenne.dba.**JdbcAdapter*.  Is this the best place to
>>>> start, does
>>>> anyone have any recommendations, or would like to be involved ?
>>>> 
>>>> regards Malcolm Edgar
>>>> 
>>> 
>>> 
>>> Interesting. Their website is full of marketing speak, but very light on
>>> what makes this database so "revolutionary". What is that attracts you to
>>> it over the choice of existing open source databases?
>>> 
>>> If it supports the basic SQL specification, there is probably very little
>>> code to implement in the Cayenne dba package.
>>> 
>>> Ari
>>> 
>> 
>> Just to be clear Malcolm, I'm not being critical of your effort at all.
>> The more databases Cayenne supports the better. But I've never come across
>> Nuo before and I'm curious about what it offers. Certainly mysql's
>> master/master clustering capabilities leave a bit to be desired, but as a
>> basic SQL/storage engine I wonder how easy it would be for anyone to
>> surpass postgresql/mysql after all the years of bug fixing and tuning.
>> 
>> I've not been able to Google any benchmarks or other third party reviews.
>> The best I found was this:
>> 
>>   http://sqlandsiva.blogspot.**com.au/2011/11/nuodb-acid-**
>> compliant-scalable-cloud_02.**html<http://sqlandsiva.blogspot.com.au/2011/11/nuodb-acid-compliant-scalable-cloud_02.html>
>> 
>> which suggests that about 90% of the SQL standard is implemented. I guess
>> the real question is which 90%?
>> 
>> 
>> 
>> 
>> Ari
>> 
>> 
>> --
>> -------------------------->
>> Aristedes Maniatis
>> GPG fingerprint CBFB 84B4 738D 4E87 5E5C  5EFA EF6A 7D2E 3E49 102A
>> 


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