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💡 Prerendering support #2859

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cole opened this issue Jul 10, 2024 · 1 comment
Open

💡 Prerendering support #2859

cole opened this issue Jul 10, 2024 · 1 comment
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enhancement New feature or request

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@cole
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cole commented Jul 10, 2024

When implementing the Speculation Rules API and prerendering a page, Datadog RUM timings for the page (specifically LCP and FCP) are from when the prerender started on the referring page, rather than activation.

This means prerendering causes an increase in timings that doesn't reflect the user experience, which is improved (sometimes dramatically) by prerendering.

Note that the web-vitals library handles prerenders by timing from activation start, as implemented in this changeset.
@cole cole added the enhancement New feature or request label Jul 10, 2024
@thomas-lebeau
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Hi @cole,
Thank you for pointing out this issue with the Speculatation Rules API. We're planning to look into this issue.

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@cole @thomas-lebeau