MTTR is an excruciatingly flawed metric that relies on comparing fundamentally different incidents with different contributing factors to Measure whether a team improves its incident response ... The brutal reality is that incidents will always vary in how long they take to resolve, so attempting to average different incidents of varying severities across a complex system will yield a number that has a high degree of variance as well ... Unfortunately, we only have so many letters in the Alphabet, so MTTR stands for Mean Time To Retrospective in this acronym. ... 阅读全文