Explain the common performance metrics

Question

In order to do performance tuning we need to first know how to evaluate the performance.

Here are metrics used in Chrome Lighthouse, can you explain them ?

First Contentful Paint

First Meaningful Paint

Speed Index

First CPU Idle

Time To Interactive

First Input Delay

Total Blocking Time

Largest Contentful Paint (LCP)

Cumulative Layout Shift (CLS)

well some of them are deprecated. It would be great if you can talk about your past experience of using one of them.

Source

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