AWS SNS

SNS

• When you create a new subscription for a SNS topic, you can specify:
  • Subscription filter policy
    • filters the messages that a subscriber receives based on message attributes and message body
    • Sample use case: you can create one SNS topic, and multiple SQS queues subscribed to the topic, set the filter policies in the SNS subscription to publish messages to designated SQS queue
  • Redrive policy (dead letter queue)
    • send undelivered messages to a dead letter queue