added start worker delay

apps/data-service/src/index.ts

@@ -93,7 +93,7 @@ async function initializeServices() {
     });
     logger.info('PostgreSQL connected');
 
-    // Initialize queue system
+    // Initialize queue system (with delayed worker start)
     logger.debug('Initializing queue system...');
     const queueManagerConfig: QueueManagerConfig = {
       redis: queueConfig?.redis || {
@@ -111,12 +111,13 @@ async function initializeServices() {
           removeOnComplete: true,
           removeOnFail: false,
         },
-        workers: 5,
-        concurrency: 20,
+        workers: 2,
+        concurrency: 1,
         enableMetrics: true,
         enableDLQ: true,
       },
       enableScheduledJobs: true,
+      delayWorkerStart: true,  // Prevent workers from starting until all singletons are ready
     };
 
     queueManager = QueueManager.getOrInitialize(queueManagerConfig);
@@ -189,6 +190,11 @@ async function initializeServices() {
     }
     logger.info('Scheduled jobs created', { totalJobs: totalScheduledJobs });
 
+    // Now that all singletons are initialized and jobs are scheduled, start the workers
+    logger.debug('Starting queue workers...');
+    queueManager.startAllWorkers();
+    logger.info('Queue workers started');
+
     logger.info('All services initialized successfully');
   } catch (error) {
     logger.error('Failed to initialize services', { error });