Eclipse Community Forums: EMF » [CDO]: failover?

Help

Home

Home » Modeling » EMF » [CDO]: failover?

Show: Today's Messages :: Show Polls :: Message Navigator

[CDO]: failover? [message #423984]

Mon, 13 October 2008 13:41

Andre Dietisheim

Messages: 131
Registered: July 2009

Senior Member

Howdie!

my current customer is getting into sales with our CDO based prototype.
He's wondering if there's any viable fail-over strategy for CDO? As far
as I know there's no solution at this time. Parts of the solution might
be the works on de-/reattaching objects. What about database
replication? Any ideas?

Cheers + Thanks
André

Report message to a moderator

Re: [CDO]: failover? [message #424000 is a reply to message #423984]

Tue, 14 October 2008 07:55

Eike Stepper

Messages: 6682
Registered: July 2009

Senior Member

Hi André,

While I worked on an IFailOverStrategy framework it turned out that both
Net4j and CDO would need to be deeply refactored to reliably support
state transfer of a CDOSession from one IChannel to another one. Many
questions are open in this regard:

201267: Failover strategy for CDO/NET4J
https://bugs.eclipse.org/bugs/show_bug.cgi?id=201267

Long ago Simon filed this one:

203167: Multiple CDO Servers (failover+loadbalancing)
https://bugs.eclipse.org/bugs/show_bug.cgi?id=203167

Cheers
/Eike

André Dietisheim schrieb:
> Howdie!
>
> my current customer is getting into sales with our CDO based
> prototype. He's wondering if there's any viable fail-over strategy for
> CDO? As far as I know there's no solution at this time. Parts of the
> solution might be the works on de-/reattaching objects. What about
> database replication? Any ideas?
>
> Cheers + Thanks
> André

Cheers
/Eike

----
http://www.esc-net.de
http://thegordian.blogspot.com
http://twitter.com/eikestepper

Report message to a moderator

Re: [CDO]: failover? [message #424018 is a reply to message #424000]

Tue, 14 October 2008 12:16

Andre Dietisheim

Messages: 131
Registered: July 2009

Senior Member

Hi Eike!

> While I worked on an IFailOverStrategy framework it turned out that both
> Net4j and CDO would need to be deeply refactored to reliably support
> state transfer of a CDOSession from one IChannel to another one. Many
> questions are open in this regard:
>
> 201267: Failover strategy for CDO/NET4J
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=201267
>
> Long ago Simon filed this one:
>
> 203167: Multiple CDO Servers (failover+loadbalancing)
> https://bugs.eclipse.org/bugs/show_bug.cgi?id=203167

I checked both bugzillas and the resume might be: there's no failover
strategy for the moment, but thoughts are present and there'll be
something in the future.
So I assume that the best classic solution for now would be to have a
solid database backup and some kind of watchdog-driven server restart. I
guess the client would have to be restarted/open a new session whenever
the connection drops, right?

Cheers
André

>
> Cheers
> /Eike
>
>
> André Dietisheim schrieb:
>> Howdie!
>>
>> my current customer is getting into sales with our CDO based
>> prototype. He's wondering if there's any viable fail-over strategy for
>> CDO? As far as I know there's no solution at this time. Parts of the
>> solution might be the works on de-/reattaching objects. What about
>> database replication? Any ideas?
>>
>> Cheers + Thanks
>> André

Report message to a moderator

Previous Topic:	Is it possible that ECoreUtil.Copy() changes an EObject?
Next Topic:	[Announce] Texo project proposal: EMF technology for web application development environments

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Thu Apr 18 08:49:07 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter