Help Center> Distributed Message Service> FAQ> Will Duplicate Messages Be Retrieved After Redelivery?
Will Duplicate Messages Be Retrieved After Redelivery?
Yes. Messages in standard queues can be flagged to be redelivered during acknowledgment by using an SDK. Redelivered messages can be retrieved a second time.
In the event of a network error, redelivered messages may be retrieved in duplicate. Therefore, set your application as an idempotent application so it is not affected when it processes a message multiple times.
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