SignalR

 public static class NotificationsControl
    {
        private static NotificationsManager _notificationsManager = new NotificationsManager(HttpContext.Current);

        internal static void AddHubId(HttpContextBase context, string hubid)
        {
            try
            {
                List<UserToHub> _listeners = context.Cache["Suzct_NotificationsListeners"] as List<UserToHub> ?? new List<UserToHub>();

                if (!_listeners.Any(m => m.hubid == hubid) && context.User != null && context.User.Identity.IsAuthenticated)
                {
                    _listeners.Add(new UserToHub() {
                        hubid = hubid,
                        username = context.User.Identity.Name,
                        browser = context.Request.Browser.Browser,
                        ipaddress = context.Request.UserHostAddress
                    });

                    context.Cache["Suzct_NotificationsListeners"] = _listeners;

                    ListenersDebugOutput(context);
                }
            }
            catch (Exception e)
            {
                LogWriter.InsertException(e, HttpContext.Current.User);
            }
        }

        internal static void RemoveHubId(HttpContextBase context, string hubId)
        {
            try
            {
                List<UserToHub> _listeners = context.Cache["Suzct_NotificationsListeners"] as List<UserToHub> ?? new List<UserToHub>();

                _listeners.RemoveAll(m => m.hubid == hubId);

                context.Cache["Suzct_NotificationsListeners"] = _listeners;

                ListenersDebugOutput(context);
            }
            catch (Exception e)
            {
                LogWriter.InsertException(e, HttpContext.Current.User);
            }
        }