private void DoWork(object state)
        {
            //var newRecord = new List<decimal>();
            //newRecord.Add((decimal)new DateTimeOffset(DateTime.UtcNow).ToUnixTimeMilliseconds());
            //newRecord.Add((decimal)(new Random().NextDouble() * 1));
            //_dataSourceService.AddItem(newRecord);
            //_hubContext.Clients.All.SendAsync("OnChartDataUpdate", newRecord);

            for (int key = 0; key < Constants.NUMBER_OF_CHARTS; key++)
            {
                var newRecord = _dataSourceService.GenerateNewRecord(key.ToString());
                //_hubContext.Clients.All.SendAsync("OnChartDataUpdate", newRecord, key);
            }
        }