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Nodejs meetup - Web Frameworks Implication on Serverless Cold Start Performance in NodeJS
- 1. AWS Lambda + Web frameworks the ״Cold Start ״edition efi@lumigo.io
- 2. Who am I
- 3. Who are we A serverless intelligence platform to visualize, monitor and troubleshoot applications
- 4. Once upon a time
- 5. Agenda What is Serverless What is Serverless cold start How NodeJS web frameworks affect cold start Testing methodology Results Insights Conclusion
- 6. What is Serverless Cloud-computing execution model in which the cloud provider runs the server, and dynamically manages the allocation of machine resources. Pricing is based on the actual amount of resources consumed by an application, rather than on pre- purchased units of capacity Wikipedia
- 8. Back to our story
- 9. AWS Lambda cold start Start a container Sometimes need to start an ec2 Uses Firecracker behind the scenes
- 10. AWS Lambda cold start Download and extract your code Your code is zipped and saved in S3
- 11. AWS Lambda cold start Load into memory and initialise Your Lambda is ready to accept its input
- 12. To summarise the process Start a container Download your code Load the code into memory and initialise it (require stuff…) Lambda is ready to accept input
- 13. Why cold start should bother me?
- 14. Why cold start should bother me? Cold start Cold start
- 15. How can I reduce cold start Reduce package size Reduce initialisation Which one is the most important to focus on?
- 16. Testing methodology Chose five frameworks: Happi (337K) Koa (416K) Express (677K) Lambda API (45K) Restify (6700K) Plain
- 18. Testing methodology 512 MB C5 18X
- 20. Results
- 21. What we found in Lumigo We found out in Lumigo that initialisation time affects your cold start more than package size >
- 22. Insights Adding web frameworks adds latency to your code start Restify, which is almost as large as express-bigger, is much slower due to initialisation time
- 23. Conclusion Web frameworks ease transition to Serverless Using them will incur cold start penalty Package size is not the main culprit in cold start times Focus on the initialisation time
- 24. Shape the future of serverless with us