Measure What You Impact, Not What You Influence
CSS Wizardry
AUGUST 24, 2022
Most metrics are not atomic: FCP, for example, isn’t a metric we can optimise in isolation—it’s a culmination of other more atomic metrics such as connection overhead, TTFB, and more. As noted above, it’s not actually possible to improve certain metrics in their own right. mark ( ' HEAD Start ' ); performance. duration ).
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