TeqNation: Building Serverless Applications

Maintaining servers is boring and tedious, even with properly automated processes in place. So, why don’t you build your next product using NO servers whatsoever? Wait, wut!? Who wouldn’t want this!

In this talk I will show what serverless is, place it in context, and show you why it’s such an interesting concept. I will show you how you can deploy your apps without maintaining any servers, while still making your application scale infinitely, on-demand and cost effective.

This is going to be awesome, don’t miss out!

Transcript

1. BUILDING SERVERLESS APPLICATIONS
2. SANDER VAN DE GRAAF. Cloud Solutions Architect / Consultant 15+ years large scale applications 5+ years AWS experience AWS APN Ambassador http://twitter.com/svdgraaf http://linkedin.com/in/svdgraaf http://svdgraaf.nl mail@svdgraaf.nl
4. WHAT IS SERVERLESS?
5. PERSPECTIVE. •VM's •Hardware abstraction •Unit of scale: machines • WHAT IS SERVERLESS?
6. PERSPECTIVE. •VM's •Hardware abstraction •Unit of scale: machines •Containers •OS abstraction •Unit of scale: application • WHAT IS SERVERLESS?
7. PERSPECTIVE. •VM's •Hardware abstraction •Unit of scale: machines •Containers •OS abstraction •Unit of scale: application •Serverless •Runtime abstraction •Unit of scale: functions WHAT IS SERVERLESS?
8. PERSPECTIVE. •VM's "I want to configure machines, storage, networking and my OS" •Containers "I want to run servers, configure applications and control scaling" •Serverless "Run my code when it's needed" WHAT IS SERVERLESS?
9. PERSPECTIVE. By Simon Wardley: https://twitter.com/swardley/status/951783539334352896 WHAT IS SERVERLESS?
10. WHAT IS SERVERLESS? "An application running on 3rd party services (BAAS) and/or using serverless computing (FAAS)" - Martin Fowler WHAT IS SERVERLESS?
11. WHAT IS SERVERLESS? "An application running on 3rd party services (BAAS) and/or using serverless computing (FAAS)" - Martin Fowler WHAT IS SERVERLESS?
12. BAAS/FAAS. WHAT IS SERVERLESS? •BAAS: Backend As A Service - Databases: Parse/Firebase/etc - Authentication: Auth0, AWS Cognito - etc... •FAAS: Functions As A Service
13. PROVIDERS. Google Cloud Functions Azure Functions AWS Lambda WHAT IS SERVERLESS?
14. WHY SERVERLESS?
15. PATCHING?! Patching? YAY!
 Said no one ever. WHY SERVERLESS?
16. PATCHING?! WHY SERVERLESS?
17. PATCHING?! WHY SERVERLESS?
18. RUNTIMES. •C# .net core 1.0/2.0 •Go 1.x •Java 8 •NodeJS 4.3, 6.10 •Python 2.7, 3.6 WHY SERVERLESS?
19. EVENT BASED. • API Gateway • AWS IoT • Alexa Skills Kit • Alexa Smart Home • CloudWatch Events • CloudWatch Logs • CodeCommit • Cognito Sync Trigger • DynamoDB • Kinesis • S3 • SNS WHY SERVERLESS?
20. STATELESS. Event doStuff(event) Time WHY SERVERLESS?
21. STATELESS. doStuff() Time doStuff() doStuff() doStuff() doStuff() doStuff() doStuff() doStuff() WHY SERVERLESS?
22. SCALABLE BY DEFAULT. Seconds WHY SERVERLESS? Provisioned Servers Requests / second 0 100 200 300 400 0 10 20 30 40 50 60 70 80 90 100 110 120 130 Requests
23. SCALABLE BY DEFAULT. Seconds WHY SERVERLESS? Provisioned Servers Requests / second 0 100 200 300 400 0 10 20 30 40 50 60 70 80 90 100 110 120 Requests 130
24. COSTS. Pay per usage VM's: per minute WHY SERVERLESS?
25. COSTS. Pay per usage VM's: per minute Lambda: Per 100ms + per request WHY SERVERLESS?
26. COSTS. Pay per usage VM's: per minute Lambda: Per 100ms + per request $0.000000208 / 100ms + $0.0000002 / request
27. FREE STUFF! WHY SERVERLESS?
28. FREE STUFF! 400.000 GB-seconds / month 1 Million requests / month WHY SERVERLESS?
29. EXAMPLES.
30. SIMPLE WEBSITE.
31. CRON.
32. JOB QUEUEUEUEUE.
33. RESILIENT UPLOADING.
34. SERVERLESS LORAWAN.
40. SERVERLESS LORAWAN. https://www.thethingsnetwork.org/docs/applications/http/
42. FRAMEWORKS. •Serverless Framework: serverless.com •Zappa: zappa.io •Chalice: github.com/aws/chalice
43. DEMO
49. SERVERLESS. •serverless.yml
50. SERVERLESS. •Serverless functions
51. SERVERLESS. •Deploy •pipenv run serverless deploy
52. SERVERLESS. •Setup ttn webhook •https://console.thethingsnetwork.org/applications/my-svdgraaf- application/integrations
53. SERVERLESS. •Simulate device •echo "20.3" | xxd -pu | xargs ttnctl devices simulate my-test-device
54. SERVERLESS. •Show logs •https://console.aws.amazon.com/cloudwatch/home?region=us- east-1#logs:prefix=/aws/lambda/ttn-serverless
55. SERVERLESS. •Call back
56. SERVERLESS. •Show logs •https://console.aws.amazon.com/cloudwatch/home?region=us- east-1#logStream:group=/aws/lambda/ttn-serverless-dev-downlink •
57. SERVERLESS. •Show data •https://console.thethingsnetwork.org/applications/my-svdgraaf- application/devices/my-test-device/data
58. CONCLUSION. •Cost effective infrastructure •Event based •Stateless •Highly scalable out of the box
59. QUESTIONS? Cloud Solutions Architect / Consultant 15+ years large scale applications 5+ years AWS experience AWS APN Ambassador http://twitter.com/svdgraaf http://linkedin.com/in/svdgraaf http://svdgraaf.nl mail@svdgraaf.nl SANDER VAN DE GRAAF.