Hello!

I'm building a new cool fancy web application. I'm considering caching the business objects in the ASP.NET Session space, to save roundtrips to the database, and then save them back when the session ends, or when critical data is written to the objects (critical would be when an Order object is actually ordered, for instance)

Is this model workable with nhibernate? After what I've read, people around here REALLY don't like the idea of NHibernate session objects hanging around, so is this possible to do without storing the actual Nhibernate session object in the ASP.NET session space?

I think, it would be enough for you to use SysCacheProvider for second-level cache and turn on caching on your objects and collections. In this case NH by itself will store objects data in the ASP.NET cache.

Thank you very much - that makes a lot of sense!

But the second level cache is a global cache, and the question looked to me like the user wanted to store the object for an Application transaction.

The ASP.Net session can be used for this, however, it may not scale well. You may consider serializing the object to the page view state instead.

BOb

Have you seen this proof of concept?

http://blog.benday.com/archive/2005/03/16/198.aspx