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コメント(11)

• 正解だと思う選択肢: D

  In case of SQS - multi-consumers if one consumer has already picked the message and is processing, in meantime other consumer can pick it up and process the message there by two copies are added at the end. To avoid this the message is made invisible from the time its picked and deleted after processing. This visibility timeout is increased according to max time taken to process the message

  👍 29

  KVK162022/10/16
• 正解だと思う選択肢: D

  True, it's D. https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-visibility-timeout.html

  👍 6

  Valero_2022/10/16
• 正解だと思う選択肢: D

  To ensure that messages are being processed only once, a solutions architect should use the ChangeMessageVisibility API call to increase the visibility timeout which is Option D.

  The visibility timeout determines the amount of time that a message received from an SQS queue is hidden from other consumers while the message is being processed. If the processing of a message takes longer than the visibility timeout, the message will become visible to other consumers and may be processed again. By increasing the visibility timeout, the solutions architect can ensure that the message is not made visible to other consumers until the processing is complete and the message can be safely deleted from the queue.

  Option A (Use the CreateQueue API call to create a new queue) would not address the issue of duplicate message processing.

  Option B (Use the AddPermission API call to add appropriate permissions) is not relevant to this issue.

  Option C (Use the ReceiveMessage API call to set an appropriate wait time) is also not relevant to this issue.

  👍 5

  Buruguduystunstugudunstuy2022/12/20