Inline
Diego
On Tue, Sep 14, 2010 at 15:08, pvginkel <[email protected]> wrote:
> I am writing a framework for a rewrite of an existing application. We
> have a data model of around 900 tables with 11000 fields in total and
> databases approaching 120 GB in the field. The basic elements of my
> new implementation are WPF, NHibernate 3, C#, .NET 4.0,
> NHibernate.Validator and Spring. The application itself is very data/
> transaction intensive and our largest installation has around 300
> concurrent users.
>
> A few things I would like feedback about are:
>
> * Is Spring a good choice? Why should I choose a different one
> (Castle?). I do have problems with startup time, but I have been able
> to bring this back to around 14 seconds. I didn’t notice much
> difference between Spring and Castle though. Shorter startup times are
> of course welcome;
>
They are pretty much the same; use whatever you're comfortable with.
>
> * I am using Identity fields, but understand this isn't the best
> option. What viable alternative is there (HiLo does not sound like a
> good idea);
>
Hilo is one of the best alternatives. In fact, it's one of the two
recommended* ones (the other is guid)
Care to describe why it "does not sound like a good idea" to you?
*: recommended by me, upcoming blog post
* Data display is done with short sessions, one per query. Data entry
> on the other hand has one session/transaction for the entire duration
> of a workflow, which can take up to 10-20 minutes max (2-4 minutes is
> more usual). Are there alternatives to a session/transaction for this
> entire duration and how could I set this up?
>
Session and transaction are not interchangeable terms.
It's ok to have a session open for the whole duration of a workflow; a
transaction is a problem (because it holds up resources)
The suggested pattern is CpBT (Conversation per Business Transaction); there
are samples in unhaddins, Fabio's blog, etc.
>
> I am open to all and every input and would like to integrate ideas
> from people whom have been working longer, and have more experience,
> with NHibernate than I have :).
>
> (B.t.w.: I know I’m in way over my head, but that’s the way I prefer
> it.)
We always welcome people willing to learn :-)
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