What is a dead letter queue in AWS?

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What is the significance of a dead letter queue in AWS? Can someone help me with this? I am new to this term. Thank you in advance.
Jan 25 in AWS by Jino
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1 answer to this question.

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You can configure a SQS queue or a SNS topic as your dead letter queue. Any AWS Lambda function that is invoked asynchronously is retried twice before discarding the event. If the retries fail and the reason is unsure, then use Dead Letter Queues (DLQ) to direct the unprocessed events to an Amazon SQS queue or an Amazon SNS topic to analyze the reason of failure.

answered Jan 28 by disha

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