Resolve Method with Unity

Question

Hi Friends, I'm developing an web application with asp.net mvc 2, and I'm using NHibernate (session per request) and Unity (for dependency injection).

In my Global.asax I'm managing my ISession something like this:

public override void Init()
{
    base.Init();

    BeginRequest += OpenNHibernateSession;
    EndRequest += DisposeNHibernateSession;
}

private static void OpenNHibernateSession(object sender, EventArgs e)
{            
    ManagedWebSessionContext.Bind(HttpContext.Current, _sessionFactory.OpenSession());
}

private static void DisposeNHibernateSession(object sender, EventArgs e)
{
    var session = ManagedWebSessionContext.Unbind(HttpContext.Current, _sessionFactory);

    if (session != null)
        session.Dispose();
}

Nice, and In my Repositories (in constructor) I pass the SessionFacotry (static in global.asax) e get ISession by SessionFacotry.GetCurrentSession(). My repositories I inject in the contrcutor's controllers! Great...

But, in my asp.net mvc application I have a value in cache and a CacheRemovedItem delegate with this Cache. In this method (in delegate), I need to persist some informations in my reopsitories, but I don't have a request when the cache expires. I'd like to know how could I RESOLVE my dependencies in this method (CacheItemRemoved delegate) in right way ? Or How could I setup an ISession to get via GetCurrentSession() in SessionFactory ?

PS: Sorry for my English!