AI scraper prefix

cmd/worker/workers/notice.go

@@ -21,6 +21,10 @@ import (
 	"golang.org/x/sync/errgroup"
 )
 
+// noticeRunSerialMu ensures only one NoticeWorker.Run executes at a time (startup
+// goroutine + cron ticks can otherwise overlap and double load on MongoDB).
+var noticeRunSerialMu sync.Mutex
+
 const (
 	// tenderIDCountersCollection holds per-(sourceCode+year) atomic counters used to allocate
 	// unique tender_id values (e.g. PTD26827). Using a Mongo counter document is the standard way
@@ -39,7 +43,7 @@ type NoticeWorker struct {
 	TenderRepo             tender.TenderRepository
 	ProcessingLimit        int
 	DeleteProcessedNotices bool
-	// Concurrency is the maximum number of notices processed in parallel per batch (default 8).
+	// Concurrency is the maximum number of notices processed in parallel per batch (default 1).
 	Concurrency int
 	// FetchBatchSize is how many unprocessed notices to load from MongoDB per batch (default 50).
 	FetchBatchSize int
@@ -60,7 +64,7 @@ func NewNoticeWorker(mongo *mongo.ConnectionManager, logger logger.Logger, notif
 		processingLimit = 5 // Default limit
 	}
 	if concurrency < 1 {
-		concurrency = 8
+		concurrency = 1
 	}
 	if fetchBatchSize < 1 {
 		fetchBatchSize = 50
@@ -141,6 +145,9 @@ func (w *NoticeWorker) cleanupProcessedNotices() {
 }
 
 func (w *NoticeWorker) Run() {
+	noticeRunSerialMu.Lock()
+	defer noticeRunSerialMu.Unlock()
+
 	w.Logger.Info("Notice worker started", map[string]interface{}{
 		"concurrency":         w.Concurrency,
 		"fetch_batch":         w.FetchBatchSize,