That sounds quite a bit like the double-keyed cache partitioning that has been in Safari since 2013, Chrome since 2020, and is being considered for Firefox. e.

That sounds quite a bit like the double-keyed cache partitioning that has been in Safari since 2013, Chrome since 2020, and is being considered for Firefox. e.g.: https://blog.josephscott.org/2019/10/16/prepare-for-fewer-cache-hits-as-chrome-partitions-their-http-cache/ https://blog.josephscott.org/2019/10/16/prepare-for-fewer-ca... https://dev.to/zwacky/time-to-say-goodbye-to-google-fonts-16dd https://dev.to/zwacky/time-to-say-goodbye-to-google-fonts-16... etc. This is not the exact same thing as what you're describing, but I'd say it's along the same trajectory (i.e., there's hope).