The Road to Serverless RESTish APIs

Or how we created hundreds of Lambda functions to expose our APIs to the world. Touching topics like project structure, web frameworks, performance, tooling, limitations and regrets :)

Transcript

1. The Road to Serverless RESTish APIs Ricardo Torres @ricardinhotorre
3. What exactly are we going to talk about?
5. Why serverless?
7. Knative, Kubeless, OpenFaaS, OpenWhisk...
8. No servers
9. Lack of resources: money, dev/ops
10. Not my code, not my infra
11. Less code, more maintainable
12. Yes, it is cheap
13. Source: https://aws.amazon.com/lambda/pricing/
14. Side projects
15. The Serverless Framework
16. Choose my cloud provider
18. Serverless at New10
19. Not too long ago...
20. Serverless Commandments
22. Serverless APIs
23. Is it even doable?
24. Serverfull
27. `https://${apiId}.execute-api.eu-west-1.amazonaws.com/${stage}/products` API Gateway
28. Express& Koa& Hapi& [insert your shiny new framework here]
29. Challenge accepted
31. https://middy.js.org/
32. We need to talk about performance
33. Duration: 141.58 ms Billed Duration: 200 ms Memory Size: 128 MB Max Memory Used: 50 MB
34. Where is my CPU usage?
35. memorySize: 128
36. Duration: 29.84 ms Billed Duration: 100 ms Memory Size: 1024 MB Max Memory Used: 50 MB
37. Cold starts
38. https://youtu.be/oQFORsso2go
39. Erm, okay... Is there anything I can do?
40. Stay away from VPCs
41. https://youtu.be/oQFORsso2go
42. What's the size of my backend?
43. https://packagephobia.now.sh/result?p=aws-sdk
44. https://packagephobia.now.sh/result?p=aws-xray-sdk-core
45. https://packagephobia.now.sh/result?p=aws-xray-sdk-core
46. https://npm.im/serverless-webpack
47. https://npm.im/lambda-warmer
48. Security
52. Works on my local
57. We'll get there
58. Are we web λet?
60. Not my infra, not my uptime
64. Great success
65. Sometimes it feels like we are reinventing the wheel
66. Thank you! Ricardo Torres @ricardinhotorre