Incident: A model update shipped a broken setting
14 min read·
Module 10 · Incident file · About 30 minutes · Needs: Lesson 1 (registry, aliases, gates), Lesson 2 (canary, flags, rollback)
Everything below about the incident comes from GitHub's own availability report, quoted where it matters. The report is short: it does not say what the configuration error was or how it passed testing, so this file does not guess.