Managing Long Running Tasks hard
SQS FIFO Queues support a 'MessageDeduplicationId'. What does this do?
- A Deletes the queue.
- B Prevents the Producer from sending duplicate messages. If a producer retries sending the same ID within 5 minutes, SQS accepts it but doesn't deliver it to consumers.
- C Deletes consumers.
- D Encrypts the ID.
Answer: B. Prevents the Producer from sending duplicate messages. If a producer retries sending the same ID within 5 minutes, SQS accepts it but doesn't deliver it to consumers.
Protects against network failures on the Producer->Queue leg.
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