Tinkertoys, microservices, and feature management: How to build for the future

on YouTube ↗53m

" summary

Argues that microservices plus feature flags require testing in production rather than full staging, with concrete practices: use canary/ring rollouts (turn on for 1% then 10%), cache flag state on the client to avoid central coupling, scrub or anonymize production data for replay, and treat flags as either deployment vs permanent flags (remove deployment flags after rollout, mark permanent ones). Tests target four states — everything on, everything off, status quo, new — and validate microservice, channel, user flow, then the delta.

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" chapters (30)

1. 0:00Introduction and welcome
2. 1:15Software as tinkertoys analogy
3. 2:23Conceptual compression in software
4. 4:50Purpose of testing today
5. 7:15User satisfaction over uptime
6. 9:04Accessibility in testing
7. 10:57Facade tests and happy paths
8. 11:39Testing in production necessity
9. 12:44Self-healing networks vision
10. 14:51Power grid resilience example
11. 16:40Modular microservices future
12. 18:05API design principles
13. 20:12Testing experience not embodiment
14. 22:17Why microservices are like tinkertoys
15. 24:45API user expectations
16. 27:13Why APIs fail
17. 29:02Combinatorial complexity of microservices
18. 30:04Testing microservices and feature flags
19. 32:11Testing in production with feature flags
20. 33:56Roadmap for smarter testing
21. 37:17Summary and closing remarks
22. 37:58Q&A: Testing with siblings
23. 39:01Q&A: Testing IoT devices
24. 41:11Q&A: Feature toggles and A/B testing
25. 42:59Q&A: Distributed feature toggling
26. 44:04Q&A: Convincing clients to invest
27. 45:29Q&A: Replaying production traffic
28. 46:11Q&A: Distributed monoliths
29. 48:00Q&A: PCI compliance and testing
30. 50:11Q&A: Service meshes and testing

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