Amazon SNS dead-letter queues (DLQ)

Amazon SNS dead-letter queues is a dead-letter queue is an Amazon SQS queue that an Amazon SNS subscription (aws_sns_topic_subscription) can target for messages that can't be delivered to subscribers successfully.

• https://docs.aws.amazon.com/sns/latest/dg/sns-dead-letter-queues.html

{
 "deadLetterTargetArn": "arn:aws:sqs:us-east-2:123456789012:MyDeadLetterQueue"
}

• aws_sns_topic_subscription: redrive_policy

Related

• Configuring an Amazon SNS dead-letter queue for a subscription:
  • CLI:
    • aws sns set-subscription-attributes
  • Terraform:
    • aws_sqs_queue_redrive_policy: redrive_policy
    • aws_sqs_queue: redrive_allow_policy
    • aws_sns_topic_subscription: redrive_policy, can be the same as SQL endpoint of different
• Using dead-letter queues in Amazon SQS
• ApproximateNumberOfMessagesVisible
• Fanout Amazon SNS notifications to Amazon SQS queues for asynchronous processing

See also

• Amazon SNS, AWS SNS Topics, Amazon SNS push notifications, aws sns, AWS::SNS::Topic, Terraform, dead-letter
• aws sns [ publish | subscribe | list-subscriptions | create-topic | set-subscription-attributes ]