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Re:Saving the Internet 2000TB a Day: Fixing Font Awesome’s F... by chucksmash on Friday December 09, 2016 @11:03AM (#13139469)
The mechanism here (if not the intent) is pretty similar to subresource integrity[1].

[1]: https://developer.mozilla.org/en-US/docs/Web/Security/Subres...

Re:Saving the Internet 2000TB a Day: Fixing Font Awesome’s F... by rrdharan on Friday December 09, 2016 @11:23AM (#13139618)
Was about to reply with exactly that information, but as it turns out apparently doing content addressable caching via the SRI mechanism has some problems and maybe is not possible:

https://hillbrad.github.io/sri-addressable-caching/sri-addre...