prevent dotnet worker from consuming all cpu

worker/src/Worker/Program.cs

@@ -28,6 +28,9 @@ namespace Worker
                 var definition = new { vote = "", voter_id = "" };
                 while (true)
                 {
+                    // Slow down to prevent CPU spike, only query each 100ms
+                    Thread.Sleep(100);
+
                     // Reconnect redis if down
                     if (redisConn == null || !redisConn.IsConnected) {
                         Console.WriteLine("Reconnecting Redis");