private void HandleCleanupRegistry(CleanupRegistry message)
        {
            // Get instances of clients that have not been connected in 48 hours
            var oldClients = _clients.Values.Where(a => !a.Connected && a.LastHeartbeatReceivedAtUtc < DateTime.UtcNow.AddHours(48)).ToList();

            foreach (var oldClient in oldClients)
            {
                _clients.Remove(oldClient.Id);
            }

            // Cleanup all clients heartbeat lists to only includ the last 50

            foreach (var id in _clients.Keys)
            {
                UpdateClient(id, client =>
                {
                    client.Heartbeats = client.Heartbeats.Take(50).ToList();
                });
            }
        }
        private void HandleCleanupRegistry(CleanupRegistry message)
        {
            // Get instances of clients that have not been connected in 48 hours
            var oldClients = _clients.Values.Where(a => !a.Connected && a.LastHeartbeatReceivedAtUtc < DateTime.UtcNow.AddHours(48)).ToList();

            foreach (var oldClient in oldClients)
            {
                _clients.Remove(oldClient.Id);
            }

            // Cleanup all clients heartbeat lists to only includ the last 50

            foreach (var id in _clients.Keys)
            {
                UpdateClient(id, client =>
                {
                    client.Heartbeats = client.Heartbeats.Take(50).ToList();
                });
            }
        }