Dev Tools · 2h ago
How AWS SNS Silently Drops Messages and How to Catch It
AWS SNS filter policies on subscriptions can silently drop messages if the publisher omits required message attributes, even though the publish call succeeds. This failure mode is invisible because no error or retry occurs, and the only trace is a CloudWatch metric. The article explains how to make the contract visible at coding time to prevent such incidents.
Meridian48 take
This is a classic gotcha in event-driven architectures that underscores the need for explicit contracts between publishers and subscribers, beyond what standard tooling or AI assistants can catch.
Read the full reporting
Why SNS Silently Drops Your Messages and How to Catch It Before You Ship →
DEV Community
aws-snsevent-driven-architecture