AWS Certified Developer Associate DVA-C02 Practice Question
What AWS service feature should an application developer use to ensure that messages which cannot be processed after a certain number of retries are not lost and can be analyzed for further investigation?
The correct answer is the use of a dead-letter queue (DLQ). AWS provides the DLQ feature to ensure that messages which cannot be processed upon certain conditions (such as surpassing a maximum number of retries) are preserved for further analysis or reprocessing, thus preventing loss and aiding in maintaining the application's fault tolerance.
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AWS Certified Developer Associate DVA-C02
Development with AWS Services
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