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lichti/service-checklist.md

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Created September 22, 2016 18:01
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Internet Scale Services Checklist
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service-checklist.md

Internet Scale Services Checklist

A checklist for designing and developing internet scale services, inspired by James Hamilton's 2007 paper "On Desgining and Deploying Internet-Scale Services."

Basic tenets

  • Does our design expect failures to happen regularly and handle them gracefully?
  • Have we kept things as simple as possible?
  • Have we automated everything?

Overall Application Design & Development

  • Can the service survive failure without human administrative interaction?
  • Are failure paths frequently tested?
  • Have you documented all conceivable component failure modes and combinations thereof?
  • Does your design tolerate these failure modes? And if not, have you undertaken a risk assessment to determine the risk is acceptable?
  • Are you targeting commodity hardware? (That is, your design does not require special h/w)
  • Are you hosting all users on a single version of the software?
  • Can you support multi-tenancy without physical isolation?
  • Have you implemented (and automated) a quick service health check?
  • Do you developers work in the full environment? (Requires single server deployment)
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