The Case for Rails on Lambda v1

What started as Function as a Service (FaaS) for many is quickly becoming a fulfilled promise on the future of a commoditized cloud-compute platform. Event-driven and deeply integrated within AWS, Lambda allows your Rails architecture to be completely reimagined (without change) atop fully managed infrastructure resources like API Gateway, SQS, S3, CloudWatch, IAM, and much more. Come find out how Lamby can help your engineering teams learn to "program the cloud".

Transcript

1. 1 The Case for Rails on Lambda 2021-07-14 by Ken Collins
2. • Custom Ink’s Cloud Story. Servers to Serverless. • How does Rails work on Lambda? High level intro. • Why the hell would we, or should you, do this? • Cloud-Native Rails. Helpful tools and projects. • Closing thoughts on our future with the Cloud. 2 Today’s Topics
3. 🐙 Cloud Story 🌦 Custom Ink’s Servers => Cloud => Cloud-Native 3
4. Do not blindly trust me! 4
5. Technology solutions are highly coupled to your business. 5
8. Using Lambda since 2017 https://aws.amazon.com/lambda/resources/customer-testimonials/ 8
9. Rails on Lambda with Lamby https://lamby.custominktech.com 9
10. Modern Compute Transactions June 2021 10
11. 🧰 Work on Lambda How Does Rails Super High Level 11
12. 12 ƒ Functions as a Service (FaaS)
13. Functions as a Service (FaaS) 13
14. Functions as a Service (FaaS) 14
15. Functions as a Service (FaaS) 15
16. Functions as a Service (FaaS) 16
17. Functions as a Service (FaaS) https://github.com/rack/rack 17
18. Functions as a Service (FaaS) 18
19. Lamby is as a Rack adapter that converts AWS Lambda integration events into native Rack Environment objects which are sent directly to your application. Lamby can do this when using either API Gateway REST API, API Gateway HTTP API's v1/v2 payloads, or even Application Load Balancer (ALB) integrations. 19 https://lamby.custominktech.com
20. API Gateway is your managed web server proxy in the Cloud! 20
21. • Container Packages. Up to 10 GB Size. ECR or DIY. • Up to 6 vCPU and 10 GB Memory. Zip or Container. • Usage of a VPC has no performance penalties. • API Gateway HTTP API fast & cheap for public apps. • The AWS SAM CLI (CloudFormation) is easy IaC. • CloudWatch Logs, Insights, and Metrics are built in. • Integrate CodeDeploy Blue Green Rollouts. • Provisioned Concurrency can kill cold starts for $$$. Lambda Highlights 21
22. Execution Env Lifecycle 22
23. Workload Concerns 23
24. Workload Concerns 24
25. 25 1792: (1) vCPU 3008: (2) vCPU Memory & Virtual CPUs
26. 26 ~80/~80 (p50) ~270/~260 (p95) ~470/~435 (p99) Transaction %’tiles (before/after)
27. DIY Lambda Containers (RIC/RIE) https://hichaelmart.medium.com/using-container-images-with-aws-lambda-7ffbd23697f1 https://github.com/aws/aws-lambda-ruby-runtime-interface-client 27
28. 🤷 Do This? Why Would Anyone That’s not how any of this works. 28
29. • Our first workload was ~90% EC2 cost savings. Years later, others could be 70%, 30%, or 130%. Depends on your current right sizing and infrastructure. • Private Applications cost more. REST API w/ALB via VPC Endpoint easily consumes EC2 cost savings. • Factor in capability unlocks. Could be technical ones like using cloud-native integrations. Could be process like building DevOps experience. Cost Savings (Efficiency Dilemma) 29 https://aws.amazon.com/lambda/resources/customer-testimonials/
30. Infrastructure as Code (IaC) 30 • Project-based IaC is a game changer for dev velocity. Great example is IAM Roles with Lambda. • SAM/CloudFormation is a great start and always getting better. Like modules & the public directory. • Graduate later to CDK or Terraform which can express existing resources.
31. AWS as a Framework 31 • Lambda is deeply integrated into AWS’ event model. • Lambda can help your path to Cloud Modernization. • Managed tooling/pipelines. CodeBuild blue/green. • Lambda unlocks new architecture capabilities. https://medium.com/galvanize/aws-as-a-framework-9abd2b1f6dc1
32. AWS as a Framework 32
33. It Works. Really Well. 33 https://www.customink.com/products
34. 🚅 Rails 🥸 Cloud-Native Helpful Tools and Projects 34
35. 35 ActiveJob on SQS & Lambda https://github.com/customink/lambdakiq
36. • Distinct web & jobs Lambda functions. • AWS fully managed polling. Event-driven. • Maximum 12 retries. Per job configurable. • Mirror Sidekiq's retry backoff timing. • Last retry is at 11 hours 30 minutes. • Supports ActiveJob's wait/delay. Up to 15 minutes. • Dead messages are stored for up to 14 days. ActiveJob on SQS & Lambda https://github.com/customink/lambdakiq 36
37. ActiveJob on SQS & Lambda 37 https://github.com/customink/lambdakiq
38. ActiveJob on SQS & Lambda 38 https://github.com/customink/lambdakiq
39. ActiveJob on SQS & Lambda 39 https://github.com/customink/lambdakiq
40. ActiveJob on SQS & Lambda https://github.com/customink/lambdakiq 40
41. ActiveJob on SQS & Lambda https://github.com/customink/lambdakiq 41
42. ActiveJob on SQS & Lambda https://github.com/customink/lambdakiq 42
43. ActiveJob on SQS & Lambda https://github.com/customink/lambdakiq 43
44. Async Processing using Extensions https://github.com/customink/lambda_punch 44
45. Async Processing using Extensions 45 https://github.com/customink/lambda_punch
46. Async Processing using Extensions 46 https://github.com/customink/lambda_punch
47. Async Processing using Extensions 47 https://github.com/customink/lambda_punch
48. 😎 Cloud Future Closing Thoughts What are we headed towards? 48
49. Scalable compute should be easy. Not about Lambda v. Kubernetes. Easy compute will be our future. Firecracker is still leading. 49
50. Do not try to out-engineer AWS Partner with them. Apply minimal spackle to fill any process/tech gaps. Happily delete your workarounds. 50
51. 51 Lambda works for existing frameworks! If Express (JavaScript) or Bref (PHP) can do it, so can Rails.
52. Try Lamby out. Use our quick start guide. 52 https://lamby.custominktech.com/docs/quick_start