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7 pages in this section.
The pub/sub-to-queue pattern beyond the Core intro's single topic/queue: one publish, several durable queues, each with its own worker.
Fan a single SNS message out to two SQS queues via SDK - create both queues, wire the subscriptions, publish once, and receive from each queue.
Handling poison messages and reprocessing via SDK - RedrivePolicy, maxReceiveCount, and StartMessageMoveTask in boto3 and AWS SDK v3.
Routing subsets of messages to specific subscribers via SDK - SetSubscriptionAttributes with FilterPolicy and FilterPolicyScope in boto3 and AWS SDK v3.
Idempotent consumer design and DLQ monitoring habits - a checklist for fan-out, FIFO, batching, and filtering built on SNS and SQS from the SDK.