Outage case study11 min
Staying up and correct when parts of the system fail.Authentication, authorization and protecting data from abuse.Metrics, logs and traces that show what a system is doing.
PremiumCrowdStrike: field 21 of 20
July 2024. A content update made every online Windows sensor read a field that didn't exist, and 8.5 million machines crashed on boot.
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What’s inside
- At a glance
- What users saw
- Timeline
- The root cause
- Why it spread
- How it was fixed
- Design lessons
- The interview angle
- Sources