EventBridge

Testing

AWS Messaging Testing Best Practices: DLQ, Retry, Idempotency, and Message Ordering

The failure modes of SQS, SNS, and EventBridge are well-known: duplicate delivery, out-of-order messages, poison pills that fill DLQs, and missing idempotency guards that corrupt state. This post covers the testing patterns that catch these bugs before they reach production. Key Takeaways Test idempotency explicitly. SQS delivers

Testing

AWS EventBridge Testing Guide: Event Rules, Schema Validation, and Integration Tests

EventBridge is AWS's serverless event bus. Testing it means verifying that events match the right rules, rules route to the right targets, schemas validate correctly, and cross-bus or cross-account flows work as expected. moto supports EventBridge for unit tests; LocalStack handles the full cross-service integration.