Famous bugs.

Real incidents from the industry, dissected the way our challenges are: symptom, root cause, lesson.

Knight Capital

Environment / configuration bug

2012≈$440M lost in 45 minutesRead the incident

Search / literal query handling

201980% of edge traffic downRead the incident

Environment / configuration bug

20174+ hours of S3 downRead the incident

Async / race condition

1985–1987Six overdoses, some fatalRead the incident

Want to practice the skills behind these? Each incident links to a related debugging challenge.