Initalizes and manages RavenDB Document Store and Session. Initalize() method must be called in Application_Start event to initialize the store and optionally - SessionSaveAndClose() on Application_PostRequestHandlerExecute to save the changes.

Raven-DB-Document-Manager.cs

public class DocumentManager
{
    public static readonly string SessionKey = "current.session";


    public static IDocumentStore CurrentDocumentStore { get; private set; }

    public static IDocumentSession CurrentSession
    {
        get
        {
            IDocumentSession session = null;
            if (HttpContext.Current != null)
            {
                session = HttpContext.Current.Items[SessionKey] as IDocumentSession;

                if (session == null)
                {
                    session = CurrentDocumentStore.OpenSession();

                    HttpContext.Current.Items.Add(SessionKey, session);
                }
            }

            return session;
        }
        private set
        {
            HttpContext.Current.Items.Add(SessionKey, value);
        }
    }

    private static bool IsSessionCreated
    {
        get
        {
            return HttpContext.Current.Items.Contains(SessionKey);
        }
    }

    public static void Initalize()
    {
        CurrentDocumentStore = new DocumentStore() { ConnectionStringName="RavenDb" };

        CurrentDocumentStore.Initialize();

        Raven.Client.MvcIntegration.RavenProfiler.InitializeFor(CurrentDocumentStore);
    }

    public static void SessionSaveAndClose()
    {
        if (IsSessionCreated)
        {
            CurrentSession.SaveChanges();
        }
    }
}