single point of failure

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Single points of failure (SPOFs) are aspects or parts of a system which, when they fail, cause crucial parts of (or the entire) system to fail. SPOFs are an important thing to take into account when designing software or creating a protocol.


  • Websites that only offer Twitter as authentication provider will fail 100% of time to allow users access if Twitter is down
  • All IndieWeb sites which rely on Bridgy to backfeed and POSSE, will not receive or send webmentions should Bridgy be down
  • All users on a hosted instance of Mastodon or Diaspora will lose all services if that instance goes down

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