That is the problem with NetDynamics 4 isn't it?
ND 4 is an application server with no place for the application.
There are pages (GUI) and there are data objects but
you have to roll your own business logic infrastructure.
At last years user conference we (the users/customers)
were promised a white paper describing how to
design business logic in ND 4. I have asked several times
since, and this paper has always been forthcoming.
If you want to use NetDynamics 4 and want
consistent mutable object oriented business logic and
have multiple CP Services on multiple machines and
store all your data in a relational database
then you
A) should reconsider
or
B) need lots of resources
If you solve this problem, you have a business opportunity.
(This goes for ND/SUN as well.)
/Mats
Hill, Les <[EMAIL PROTECTED]> wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Paul,
>
> It is not clear what you are trying to do with your cache. But if cache
> consistency across JVMs is important, then I can think of at least two
> simple options:
>
> Use a global session object -- this would work well for relatively small
> caches.
>
> Use RMI and run a long-lived service that acts as a global cache for all
> CPs. (This can be very easy or very complex depending on what your cache
> needs to do -- RMI itself is almost a no-brainer).
>
> [EMAIL PROTECTED]
> Team NetDynamics
>
> > -----Original Message-----
> > From: Paul [SMTP:[EMAIL PROTECTED]]
> > Sent: Friday, May 14, 1999 4:33 AM
> > To: [EMAIL PROTECTED]
> > Subject: [ND] coordinating across CPs
> >
> > Hi,
> >
> > I wrote a few cache management classes that worked great running on a
> > single CP, but when confronted with multiple CP's with their own virtual
> > machines the caches are getting out of synch. For instance, if a user
> > edits data using CP A, that data may not be updated in CP's B, C, or D.
> >
> > Is there any way to communicate across CP's?
> >
> > My little research has only turned up the following. Each might work,
> > but I'm not sure what the best approach is.
> >
> > o CSpider.clearCache(CSpClassName projectName); // clears all CP's?
> > rather brutal to performance
> >
> > o CSpider.clearChache(CSpClassName) seems most viable, but does it clear
> > all CP's?
> >
> > o CSpider has access to something called a global session. Is it truly
> > global, i.e., cross CP. Is it a user session thing or an
> > application-wide session? Sorry, I couldn't find much documentation.
> >
> > o CSpDataCache
> >
> > Thanks for any help,
> > Paul
> >
> >
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