The Middy After Hook Problem: Why Streaming Lambda Observability Is Broken
📰 Dev.to · Pablo Albaladejo
Learn why Middy's after hook can break streaming Lambda observability and how to address this issue
Action Steps
- Identify the use of Middy's after hook in your streaming Lambda function
- Verify if the after hook is running before the stream is consumed
- Apply a workaround to delay the after hook execution until the stream is fully consumed
- Test your Lambda function with the workaround to ensure observability is working as expected
Who Needs to Know This
Developers working with AWS Lambda and Middy will benefit from understanding this issue to ensure proper observability in their streaming applications
Key Insight
💡 Middy's after hook runs before the stream is consumed, causing empty data in observability tools
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🚨 Middy's after hook can break streaming Lambda observability! 🚨 Learn why and how to fix it
Key Takeaways
Learn why Middy's after hook can break streaming Lambda observability and how to address this issue
Full Article
Middy's after hook runs before the stream is consumed. If you add observability to a streaming Lambda, your data will always be empty. Here's why, and why tests don't catch it.
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