intermediate~1.5h
SNS Subscription Filter Policies
Using SNS filter policies to route a single topic's messages to the right subscribers based on message attributes, instead of broadcasting every message to every subscriber.
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Subtopics
🎓 Learning objectives
- •Explain why unfiltered fan-out leads subscribers to receive and discard irrelevant messages
- •Attach a filter policy to an SNS subscription based on message attributes
- •Publish messages with the message attributes a filter policy depends on
- •Design multiple differently-filtered SQS subscribers off one SNS topic
- •Distinguish attribute-based filtering from payload-based filtering limitations
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Related concepts
sqs-dead-letter-queues-deep-divesns-fanout-patternsspring-boot-error-handling-and-resilience-on-awsevent-driven-architecture-fundamentals