[Webkit-unassigned] [Bug 170122] [link preload] Double downloads of preloaded content when it's in MemoryCache

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=170122

--- Comment #34 from Yoav Weiss <yoav at yoav.ws> ---
I have discussed that with Antti and avoiding a double download is the right behavior here. We consciously removed support for the "load the script twice with two different encodings" scenario, at it is an edge case. As you can see in previous patches on this issue, I tried to support that case by changing the encoding of the cached resource, but Antti rightfully observed that to be dangerous behavior which may lead to memory issues.

The MemoryCache is underspecced and we should definitely work to improve that, but in the mean time, comparing WebKit to Firefox, which reloads *every* script reference regardless of charset changes, is not an apples to apples comparison (no pun intended).

FWIW, Chrome also fails that edge-case test, for similar reasons.

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