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Amazon SQS Dead-letter Queues

Pragya Keshap answered on February 13, 2023 Popularity 7/10 Helpfulness 2/10

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  • Amazon SQS Dead-letter Queues

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    Amazon SQS supports dead-letter queues (DLQ)

    ▪ Messages can't be processed because of a variety of possible issues.

    ▪ Example; User places a web order with a particular product ID, but the product ID is deleted.

    Code fails and displays an error, and the message with the order request is sent to a dead-letter

    queue.

    ▪ The main task of a dead-letter queue is to handle the lifecycle of unconsumed messages.

    ▪ A dead-letter queue lets you set aside and isolate messages that can't be processed correctly

    to determine why their processing didn't succeed.

    ▪ Setting up a dead-letter queue

    ▪ Configure an alarm for any messages moved to a dead-letter queue.

    ▪ Examine logs for exceptions that might have caused messages to be moved to a dead-letter queue.

    ▪ Analyze the contents of messages moved to a dead-letter queue.

    ▪ Determine whether you have given your consumer sufficient time to process messages.

    https://docs.aws.amazon.com/AWSSimpleQueueService/latest/SQSDeveloperGuide/sqs-dead-letter-queues.html

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    Contributed on Feb 13 2023
    Pragya Keshap
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