Mapping a Better Future with STPA
summary
Claims that applying Systems Theoretic Process Analysis (STPA) to Google Maps’ road-closure pipeline catches system-level design flaws that component-focused SRE tools miss. The team found seven flaws in 26 hours including race conditions, invalid operation ordering, and poor observability, then added feedback from Google Maps into the snapshot diff so missed closures never silently drop out. STPA is used during design to prevent outages before deployment and cut fix cost to under four hours each.
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chapters (8)
- 0:00Introduction to STPA
- 1:51The road disruption problem
- 2:57Limitations of traditional SRE
- 6:41The STPA process
- 7:01Applying STPA to system design
- 14:29Benefits of early detection
- 16:07Cultural and strategic impact
- 17:43Key takeaways and resources
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