How to win the game of trade-offs

Delivered at the Serverless Summit 2022. Learn how to design serverless systems and tip the balance of trade-offs in your favour.

To learn how to build production-grade serverless applications, check out my upcoming workshops at productionreadyserverless.com and get 15% off with the code "serverlesssummit22".

Transcript

1. How to win the game of trade-offs Yan Cui AWS Serverless Hero @theburningmonk
2. Yan Cui http://theburningmonk.com @theburningmonk AWS user since 2010
3. Yan Cui http://theburningmonk.com @theburningmonk Developer Advocate @
4. Yan Cui http://theburningmonk.com @theburningmonk Independent Consultant advise training delivery
6. How to build a service for scheduling one-off tasks Calendar reminders Stop cancelled subscriptions …
8. How to build a service for scheduling one-off tasks Calendar reminders Stop cancelled subscriptions …
12. Goal: win the game of trade-offs
13. Be explicit about the things that matter to you
14. Scheduling service for one-off tasks Precision Birthday reminder: within hours Subscription service: within minutes Multiplayer game: within seconds
15. Scheduling service for one-off tasks Precision Birthday reminder: within hours Subscription service: within minutes Multiplayer game: within seconds
16. Scheduling service for one-off tasks Precision Cost Scalability Hotspots
17. Be upfront about how much you care about each of these in relative terms
19. Precision Cost Scalability Hotspots ? ? ? ?
21. Be upfront about how much you care about each of these in relative terms
22. Con fi rmation bias The tendency to search for, interpret, favor, and recall information in a way that con fi rms or supports one's prior beliefs or values
23. Scheduling service for one-off tasks Precision Cost Scalability Hotspots
24. Scheduling service for one-off tasks Precision Cost Scalability Hotspots time-to-market? maintenance? familiarity? enterprise support?
25. Precision Cost Scalability Hotspots $45 $15 $25 $15
26. Precision Seconds Mins Hours Days …
27. Precision Seconds Mins Hours Days … OK! NOT OK!
28. Maintenance Easier More Dif fi cult
29. Maintenance Easier More Dif fi cult OK! NOT OK!
30. Maintenance Easier More Dif fi cult OK! NOT OK! Maintenance Easier More Dif fi cult OK! NOT OK! Maintenance Easier More Dif fi cult OK! NOT OK!
31. EventBridge Scheduler
32. Build vs Buy?
33. Build vs Buy? Serviceful Prefer using a service until it’s not feasible
34. It’s not you. This stuff is hard.
35. It’s not you. This stuff is hard. But you can get better at it with exercise
36. RemindMe Google calendar competitor. Users can set reminders for future events and receive SMS or push noti fi cations 10 mins before the event. RemindMe
37. RemindMe Google calendar competitor. Users can set reminders for future events and receive SMS or push noti fi cations 10 mins before the event. User reminders often cluster around public holidays and sporting events. During which, the system needs to notify millions of users. RemindMe
38. Precision Cost Scalability Hotspots ? ? ? ?
39. Precision Cost Scalability Hotspots $40
40. Precision Cost Scalability Hotspots $40 $35
41. Precision Cost Scalability Hotspots $40 $35 $15
42. Precision Cost Scalability Hotspots $40 $35 $10 $15
43. EventBridge Scheduler
44. Precision Cost Scalability Hotspots EventBridge Scheduler
46. Precision Cost Scalability Hotspots EventBridge Scheduler 4
48. Precision Cost Scalability Hotspots 4 EventBridge Scheduler 10
50. Precision Cost Scalability Hotspots 4 EventBridge Scheduler 10 9
52. Precision Cost Scalability Hotspots 4 EventBridge Scheduler 10 9 3
53. Precision Cost Scalability Hotspots $40 $35 $10 $15
54. 3 Precision Cost Scalability Hotspots 4 EventBridge Scheduler 10 9 $40 $35 $10 $15
55. 3 Precision Cost Scalability Hotspots 4 EventBridge Scheduler 10 9 $40 $35 $10 $15 4x15 10x10 9x40 3x35
56. 3 Precision Cost Scalability Hotspots 4 EventBridge Scheduler 10 9 $40 $35 $10 $15 4x15 10x10 9x40 3x35 + + +
57. 3 Precision Cost Scalability Hotspots 4 EventBridge Scheduler 10 9 $40 $35 $10 $15 4x15 10x10 9x40 3x35 + + + 625
58. Step Functions
60. Precision Cost Scalability Hotspots Step Functions
61. Precision Cost Scalability Hotspots Step Functions 10
63. 1. 2. 3. 4.
64. 4 states x 1,000,000 x $0.000025 = $100 per million scheduled events
65. Precision Cost Scalability Hotspots Step Functions 10 1
66. Cost $0.01 / mil $100 / mil OK! NOT OK!
68. 1 Precision Cost Scalability Hotspots Step Functions 10 9
69. State Transition
71. peak rate steady rate
72. 1 Precision Cost Scalability Hotspots Step Functions 10 9 5
73. 1 Precision Cost Scalability Hotspots Step Functions 10 9 5 $40 $35 $10 $15
74. 1 Precision Cost Scalability Hotspots Step Functions 10 9 5 $40 $35 $10 $15 10x15 1x10 9x40 5x35 + + +
75. Precision Cost Scalability Hotspots Step Functions 10 2 9 5 $40 $35 $10 $15 10x15 2x10 9x40 5x35 + + + 695
76. Step Functions EventBridge Scheduler 625 695
77. Step Functions EventBridge Scheduler 625 695 Better at the things we care more about
78. Cost $0.01 / mil $100 / mil OK! NOT OK!
80. EventBridge Scheduler
81. Be upfront about how much you care about each of these in relative terms
83. productionreadyserverless.com 15% OFF with “serverlesssummit22”