How can I monitor and log dead-letter queues?

https://docs.aws.amazon.com/sns/latest/dg/sns-dead-letter-queues.html#how-to-monitor-log-dead-letter-queues

• ApproximateNumberOfMessagesVisible

See also

• Amazon SNS, AWS SNS Topics, Amazon SNS push notifications, aws sns, AWS::SNS::Topic, Terraform, dead-letter
• dead-letter