Add parralelism for bundle worker

src/Managing.Application.Workers/BundleBacktestWorker.cs

@@ -37,6 +37,9 @@ public class BundleBacktestWorker : BaseWorker<BundleBacktestWorker>
 
     protected override async Task Run(CancellationToken cancellationToken)
     {
+        var maxDegreeOfParallelism = 3;
+        using var semaphore = new SemaphoreSlim(maxDegreeOfParallelism);
+        var processingTasks = new List<Task>();
         try
         {
             // Get pending bundle backtest requests
@@ -47,8 +50,21 @@ public class BundleBacktestWorker : BaseWorker<BundleBacktestWorker>
                 if (cancellationToken.IsCancellationRequested)
                     break;
 
-                await ProcessBundleRequest(bundleRequest, cancellationToken);
+                await semaphore.WaitAsync(cancellationToken);
+                var task = Task.Run(async () =>
+                {
+                    try
+                    {
+                        await ProcessBundleRequest(bundleRequest, cancellationToken);
+                    }
+                    finally
+                    {
+                        semaphore.Release();
+                    }
+                }, cancellationToken);
+                processingTasks.Add(task);
             }
+            await Task.WhenAll(processingTasks);
 
             await RetryUnfinishedBacktestsInFailedBundles(cancellationToken);
         }