Nhibernate with Asp.net WebForms - Session per Request

Question

I am using an HttpModule to open a session that span each request and it works great with lazy loading and everything.

My concern is that since I open a new session per request (and stores it in HttpContext.Current.Items) it opens a session for every request even request including request for .css files and images. I recall reading that session creation is a pretty lightwheigt operation (dont know about transactions though) but anyway it seems unnecessary to open a session for a requests for a .css file?

Anyone got some ideas about this, is it a problem and/or am I doing something stupid?

Thanks in advance

you mean HttpModule, not HttpHandler, right?

Mauricio Scheffer
– Mauricio Scheffer

2011-05-06 11:10:40 +00:00
Commented May 6, 2011 at 11:10 — Mauricio Scheffer
– Mauricio Scheffer, Commented May 6, 2011 at 11:10
You are right ofcourse, the answer is edited now. Thanks

jmw
– jmw

2011-05-09 12:28:20 +00:00
Commented May 9, 2011 at 12:28 — jmw
– jmw, Commented May 9, 2011 at 12:28

devio · Accepted Answer · 2011-05-06 10:01:21Z

8

only create the session object if the file type is .aspx or .ashx:

    switch (context.Request.CurrentExecutionFilePathExtension.ToLower())
    {
        case ".aspx":
        case ".ashx":
            context.Items[ContextKey] = CreateMySession();
            break;
    }

or encapsulate session creation inside a property getter, and clean-up checks whether session != null

answered May 6, 2011 at 10:01

devio

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1 Comment

jmw Over a year ago

How expensive is it to begin an Nhib Transaction for every request (per aspx/ashx)? Can I have a transaction for every request or should I open them explicitly when needed?

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