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Update TTFB diagram (#87)
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tunetheweb authored Apr 26, 2024
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4 changes: 2 additions & 2 deletions index.html
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Expand Up @@ -172,12 +172,12 @@ <h2>How do you measure real-world Time to First Byte?</h2>
<h2>What is Time to First Byte?</h2>

<p>
<a href="https://web.dev/ttfb">TTFB</ttfb> is measured as the time from the start of navigation request until the time that the
<a href="https://web.dev/articles/ttfb">TTFB</ttfb> is measured as the time from the start of navigation request until the time that the
client receives the first byte of the response from the server. It includes network setup time
(SSL, DNS, TCP) as well as server-side processing.
</p>

<img src="ttfb.png" loading="lazy" height="248" width="800" alt="Diagram showing TTFB as the network events from the prompt for unload to the response start">
<img src="ttfb.png" loading="lazy" height="320" width="800" alt="Diagram showing TTFB as the network events from the prompt for unload to the response start">

<p>
As you can see in the <a href="https://w3c.github.io/navigation-timing/">Navigation Timing Level 2 draft spec</a>
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