Can You Afford It?: Real-world Web Performance Budgets
Alex Russell
OCTOBER 22, 2017
We set a budget in time of <= 5 seconds first-load Time-to-Interactive and <= 2s for subsequent loads. JS Is Your Most Expensive Asset. This matters because all script loading delays the metric we value most: Time to Interactive. This uncanny-valley effect is the reason we focus on when pages become reliably interactive.
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