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Debugging AWS Lambda Performance Issues
The document discusses debugging AWS Lambda performance issues, emphasizing that most problems arise from integration points. It outlines the need for observability to understand service performance at both macro and micro levels, indicating how to collect important outputs for analysis. The document also provides strategies for logging and turning data into metrics to aid in performance debugging.
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Debugging AWS Lambda Performance Issues
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- 2. Yan Cui http://theburningmonk.com @theburningmonk Developer Advocate@ Independent Consultant AWS user since 2009 since 2018 yan@lumigo.io
- 3. Aviad Mor @aviadmor Co-Founder &CTO @ aviad@lumigo.io
- 7. observation majority of performanceproblems originates from a function’s integration points
- 8. macro how well isthis service performing in general? micro why did this transaction perform poorly?
- 9. macro how well isthis service performing in general? micro why did this transaction perform poorly? identify systemic issues
- 10. macro how well isthis service performing in general? micro why did this transaction perform poorly? why did this user get a bad exp?
- 11. In control theory,observability is a measure of how well internal states of a system can be inferred from knowledge of its external outputs.
- 12. In control theory,observability is a measure of how well internal states of a system can be inferred from knowledge of its external outputs. what do we need to collect?
- 13. API Gateway LambdaDynamoDB
- 14. API Gateway LambdaDynamoDBhow long did this req take?
- 15. what is thestate of the world?
- 16. In control theory,observability is a measure of how well internal states of a system can be inferred from knowledge of its external outputs. what are the most important outputs to collect?
- 17. macro how well isthis service performing in general? micro why did this transaction perform poorly?
- 18. API Gateway APIGatewayLambda Lambda DynamoDB Service A Service B
- 19. API Gateway APIGatewayLambda Lambda DynamoDB Service A Service B how long did service B took to respond?
- 20. API Gateway APIGatewayLambda Lambda DynamoDB Service A Service B how long did service B took to respond? was DynamoDB slow? was it a cold start? could it be API Gateway?
- 21. How do wecollect these external output to help us infer the application’s internal state to debug performance issues?
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- 23. log them manually turnthese into metrics using Metric Filter
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- 25. intercept all HTTPrequests
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- 29. API Gateway Lambda GET/ Lambda POST /restaurants/search API Gateway Lambda GET / get-index get-restaurants search-restaurants DynamoDB EventBridge Lambda notify-restaurant Lambda place-order POST /order SNS
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