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The Logs Came From the Future — Five Incidents a Clock Made
A timestamp is a claim, not evidence
중급 · Lessons 11 · Lab 1
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Curriculum
The logs came from the future
The logs came from the future
reading
Quiz: The logs came from the future
quiz
One in the morning came twice
One in the morning came twice
reading
Quiz: One in the morning came twice
quiz
The elapsed time came out negative
The elapsed time came out negative
reading
Quiz: The elapsed time came out negative
quiz
A perfectly good certificate was rejected
A perfectly good certificate was rejected
reading
Quiz: A perfectly good certificate was rejected
quiz
The settlement that should have run once ran twice
The settlement that should have run once ran twice
reading
The clock casebook — reading nine records
lab
Quiz: The settlement that should have run once ran twice
quiz
Reference docs
RFC 5905 — NTPv4, 시계 오차와 왕복 지연 계산
IANA 시간대 데이터베이스
PEP 495 — 지역 시각의 fold
clock_gettime(2) — REALTIME 과 MONOTONIC
RFC 7519 — JWT 의 exp · nbf 와 시계 오차 여유
쿠버네티스 CronJob — 시간대와 멱등성