Deleting entities from Outbox table

In your example for outbox pattern the QueueService deletes all messages from Outbox table once the message is published to SQS queue. This operation can fail, in this scenario you would want to roll back the message publishing or you need a mechanism to avoid duplicate messages.

```
sqsClient.sendMessageBatch(sendMessageBatchRequest);
outboxRepository.deleteAllInBatch(entities);
```

Start at the QueueService flow shown in the issue, especially sendMessageBatch followed by outboxRepository.deleteAllInBatch(entities). Trace what happens when deletion fails and determine whether the intended outcome is rollback of publishing or a mechanism that prevents duplicate messages. Done requires a clearly chosen and verified failure-handling strategy, but the issue does not specify which approach to use.

Written by the indexing model from the issue text.