Front-End’s Missing Metric: The TBT Window
The TBT Window is the FCP-to-TTI interval used to calculate Total Blocking Time. If FCP or TTI moves, TBT can change even when long tasks do not.
原文：https://www.a8q9.cn/en/article/front-end-s-missing-metric-the-tbt-window-8065d1.html