Remove 08 time-to-first-byte-what-it-is-and-why-it-matters
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Front-End Performance Checklist 2021

Smashing Magazine

DOM complete, time to first byte, first input delay, client CPU and memory usage. How do we actually know where we stand in terms of performance, and what exactly our performance bottlenecks are? How do we actually know where we stand in terms of performance, and what exactly our performance bottlenecks are?