Contact emails
steven...@microsoft.com

Explainer
https://github.com/WICG/nav-speculation/blob/main/clear-site-data-integration.md


Specification
https://chromium-review.googlesource.com/c/chromium/src/+/6456388


Summary

We propose adding two new values to the Clear-Site-Data header to help 
developers target clearing the prerender and prefetch cache: “prefetchCache” 
and “prerenderCache”.



Blink component
Blink>Loader>Preload


Motivation

Currently, the only way to clear the prefetch and prerender cache is through 
either the Clear-Site-Data header "cache" value or manually having the UA clear 
their browsing data cache. With the increased adoption of Speculation Rules, 
developers want a way to target specifically clearing prefetches, prerenders, 
or both, without disrupting other session information, such as history, 
cookies, etc. By adding "prefetchCache" and "prerenderCache" values to the 
Clear-Site-Data response headers, there is an option to target only these 
specific caches.



Initial public proposal
https://docs.google.com/document/d/1OWMmGHvXDAM1VYOP2TDP2c7GWJ5ucNxFwFQQVlGdmQ4/edit?usp=sharing


TAG review
None


TAG review status
Pending


Risks




Interoperability and Compatibility

None


Gecko: No signal

WebKit: No signal

Web developers: No signals

Other signals:


WebView application risks

Does this intent deprecate or change behavior of existing APIs, such that it 
has potentially high risk for Android WebView-based applications?

None




Debuggability

None



Is this feature fully tested by web-platform-tests?
No


Flag name on about://flags
None


Finch feature name
None


Non-finch justification
None


Requires code in //chrome?
False


Estimated milestones

No milestones specified



Link to entry on the Chrome Platform Status
https://chromestatus.com/feature/4755745652080640?gate=5093598114349056


This intent message was generated by Chrome Platform Status.

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