Apache JDO Project - failover

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Author failover
erik@jpox.org

2005-12-23, 5:45 pm

Hi,

The standard allows setting up one data source per PMF. Failover mechanism to
recover from like "cannot obtain a connection" or "broken connections" are not
covered. Wouldn't be beneficial to cover such scenarios than upon failure will
switch to a backup data source?

Regards,

Erik Bengtson

Craig L Russell

2005-12-23, 5:45 pm

2005-12-24, 7:45 am

Ok thanks. Do you think it should be considered for JDO 2.1 or 3? I can
raise a JIRA feature request, so it might be easier to keep track later.

Erik Bengtson

-----Original Message-----
From: Craig.Russell@Sun.COM [mailto:Craig.Russell@Sun.COM]
Sent: Friday, December 23, 2005 11:16 PM
To: JDO Expert Group; Apache JDO project
Subject: Re: failover

Hi Erik,

I'm afraid I don't have the energy to take on this addition to the spec,
but I'd encourage you to see if you can find other like-minded folks to
make a standard set of connection properties for failover.

You can start a wiki page on the apache jdo site. You can use
org.apache.jdo.options.failover as a prefix for the property names if
they are discussed and agreed by the apache jdo project.

Does this give you enough direction on a strategy for standardizing the
names?

Regards,

Craig

On Dec 23, 2005, at 6:36 AM, erik@jpox.org wrote:



Hi,

The standard allows setting up one data source per PMF. Failover
mechanism to
recover from like "cannot obtain a connection" or "broken connections"
are not
covered. Wouldn't be beneficial to cover such scenarios than upon
failure will
switch to a backup data source?

Regards,

Erik Bengtson

Craig Russell
Architect, Sun Java Enterprise System http://java.sun.com/products/jdo
408 276-5638 mailto:Craig.Russell@sun.com
P.S. A good JDO? O, Gasp!


Craig L Russell

2005-12-24, 5:48 pm

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