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Home » Modeling » EMF » use CDO in an JEE environment?
use CDO in an JEE environment? [message #637387] Fri, 05 November 2010 10:28 Go to next message
Florian Thienel is currently offline Florian ThienelFriend
Messages: 38
Registered: July 2009
Member
Hi!

Are there any experiences with CDO used in an JEE environment running on
an application server (like WebSphere, JBoss)? Is it possible to use CDO
in a clustered environment?

~Florian
Re: use CDO in an JEE environment? [message #637388 is a reply to message #637387] Fri, 05 November 2010 10:34 Go to previous messageGo to next message
Eike Stepper is currently offline Eike StepperFriend
Messages: 6446
Registered: July 2009
Senior Member
Hi Florian,

I've heard about uses in web containers (and made some own experience there). No issues there.

I myself have no experience with EJB containers and I can not remember of user feedback about that. Hopefully others jump in.

In case you dare to just try it out, please tell us about the results. It shouldn't take you too long and we're always here to help woth specific issues...

Cheers
/Eike

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



Am 05.11.2010 11:28, schrieb Florian Thienel:
> Hi!
>
> Are there any experiences with CDO used in an JEE environment running on an application server (like WebSphere, JBoss)? Is it possible to use CDO in a clustered environment?
>
> ~Florian


Re: use CDO in an JEE environment? [message #637390 is a reply to message #637388] Fri, 05 November 2010 10:43 Go to previous messageGo to next message
Florian Thienel is currently offline Florian ThienelFriend
Messages: 38
Registered: July 2009
Member
Hi Eike,

how does CDO behave if the backend database is modified by another
process which CDO is not aware of? I think this is the "casus cnaxus"
when running in a clustered environment. Can you say something about that?

Anyway - I'm actually convincing my boss to get some time to evaluate
CDO for our use case.

~Florian

Am 05.11.2010 11:34, schrieb Eike Stepper:
> Hi Florian,
>
> I've heard about uses in web containers (and made some own experience
> there). No issues there.
>
> I myself have no experience with EJB containers and I can not remember
> of user feedback about that. Hopefully others jump in.
>
> In case you dare to just try it out, please tell us about the results.
> It shouldn't take you too long and we're always here to help woth
> specific issues...
>
> Cheers
> /Eike
>
> ----
> http://www.esc-net.de
> http://thegordian.blogspot.com
> http://twitter.com/eikestepper
>
>
>
> Am 05.11.2010 11:28, schrieb Florian Thienel:
>> Hi!
>>
>> Are there any experiences with CDO used in an JEE environment running
>> on an application server (like WebSphere, JBoss)? Is it possible to
>> use CDO in a clustered environment?
>>
>> ~Florian
Re: use CDO in an JEE environment? [message #637398 is a reply to message #637390] Fri, 05 November 2010 10:56 Go to previous message
Eike Stepper is currently offline Eike StepperFriend
Messages: 6446
Registered: July 2009
Senior Member
Am 05.11.2010 11:43, schrieb Florian Thienel:
> Hi Eike,
>
> how does CDO behave if the backend database is modified by another process which CDO is not aware of? I think this is the "casus cnaxus" when running in a clustered environment. Can you say something about that?
We used to have a configuration property in the repository that, when switched on, lead to constant re-evaluation of the cached state in the repository against the actual backend. I vaguely remember that we've removed this mechanism at some point in the past because it was rarely used and caused bad performance and increased complexity in new functionalities that were added later. I will investigate this next week...

>
> Anyway - I'm actually convincing my boss to get some time to evaluate CDO for our use case.
That would be great, especially if you report back your experiences ;-)

Cheers
/Eike

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


>
> ~Florian
>
> Am 05.11.2010 11:34, schrieb Eike Stepper:
>> Hi Florian,
>>
>> I've heard about uses in web containers (and made some own experience
>> there). No issues there.
>>
>> I myself have no experience with EJB containers and I can not remember
>> of user feedback about that. Hopefully others jump in.
>>
>> In case you dare to just try it out, please tell us about the results.
>> It shouldn't take you too long and we're always here to help woth
>> specific issues...
>>
>> Cheers
>> /Eike
>>
>> ----
>> http://www.esc-net.de
>> http://thegordian.blogspot.com
>> http://twitter.com/eikestepper
>>
>>
>>
>> Am 05.11.2010 11:28, schrieb Florian Thienel:
>>> Hi!
>>>
>>> Are there any experiences with CDO used in an JEE environment running
>>> on an application server (like WebSphere, JBoss)? Is it possible to
>>> use CDO in a clustered environment?
>>>
>>> ~Florian
>


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