Hangfire actions without all the serialization issues (won't survive server restart or multiple servers, but easier to make that work as well)

background.cs

        Random r = new Random();

        static ConcurrentDictionary<int, Action> actions = new ConcurrentDictionary<int, Action>(); 

        public static void ExecuteAction(int i)
        {
            Action a; 
            actions.Remove(i, out a); 
            a();
        }

        public void Background(Action a)
        {
            var i = r.Next();
            actions[i] = a; 
            Hangfire.BackgroundJob.Enqueue(()=>MyCron.ExecuteAction(i)); 
        }