v0.1.35: устранены гонки map (ChangeVisibility/DeleteBatch) и nil-deref под Lock + OverLimit

app/gosqs/delete_message_batch.go

@@ -40,10 +40,6 @@ func DeleteMessageBatchV1(req *http.Request) (int, interfaces.AbstractResponseBo
 
 	key := tenantQueueKey(t.AccessKey, queueName)
 
-	if _, ok := models.SyncQueues.Queues[key]; !ok {
-		return utils.CreateErrorResponseV1("QueueNotFound", true)
-	}
-
 	if len(requestBody.Entries) == 0 {
 		return utils.CreateErrorResponseV1("EmptyBatchRequest", true)
 	}
@@ -63,6 +59,13 @@ func DeleteMessageBatchV1(req *http.Request) (int, interfaces.AbstractResponseBo
 	models.SyncQueues.Lock()
 	defer models.SyncQueues.Unlock()
 
+	// Проверка существования очереди ВНУТРИ Lock: раньше была БЕЗ блокировки
+	// (чтение map) — concurrent map read/write при параллельном DeleteQueue.
+	queue, exists := models.SyncQueues.Queues[key]
+	if !exists {
+		return utils.CreateErrorResponseV1("QueueNotFound", true)
+	}
+
 	deleteMessageMap := make(map[string]*deleteEntry)
 	for _, entry := range requestBody.Entries {
 		deleteMessageMap[entry.ReceiptHandle] = &deleteEntry{
@@ -74,13 +77,13 @@ func DeleteMessageBatchV1(req *http.Request) (int, interfaces.AbstractResponseBo
 
 	deletedEntries := make([]models.DeleteMessageBatchResultEntry, 0)
 	deletedUuids := make([]string, 0)
-	remainingMessages := make([]models.SqsMessage, 0, len(models.SyncQueues.Queues[key].Messages))
+	remainingMessages := make([]models.SqsMessage, 0, len(queue.Messages))
 
-	for _, message := range models.SyncQueues.Queues[key].Messages {
+	for _, message := range queue.Messages {
 		if de, found := deleteMessageMap[message.ReceiptHandle]; found {
 			log.Debugf("FIFO Queue %s unlocking group %s:", queueName, message.GroupID)
-			models.SyncQueues.Queues[key].UnlockGroup(message.GroupID)
-			delete(models.SyncQueues.Queues[key].Duplicates, message.DeduplicationID)
+			queue.UnlockGroup(message.GroupID)
+			delete(queue.Duplicates, message.DeduplicationID)
 			de.Deleted = true
 			deletedEntries = append(deletedEntries, models.DeleteMessageBatchResultEntry{Id: de.Id})
 			deletedUuids = append(deletedUuids, message.Uuid)
@@ -89,11 +92,11 @@ func DeleteMessageBatchV1(req *http.Request) (int, interfaces.AbstractResponseBo
 		}
 	}
 
-	models.SyncQueues.Queues[key].Messages = remainingMessages
+	queue.Messages = remainingMessages
 	// Удаляем сообщения из Redis отдельно — O(batch_size)
 	persistence.DeleteMessagesPersist(key, deletedUuids)
 	// Метаданные очереди (duplicates, FIFO state)
-	persistence.SaveQueue(key, models.SyncQueues.Queues[key])
+	persistence.SaveQueue(key, queue)
 
 	notFoundEntries := make([]models.BatchResultErrorEntry, 0)
 	for _, de := range deleteMessageMap {