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You cache negotiated responses[1] using the Vary header[2]. PageSpeed does rewrite URLs in the HTML, it just isn't needed in this case. [1] http://www.w3.org/

by scaz 13y ago

You cache negotiated responses[1] using the Vary header[2]. PageSpeed does rewrite URLs in the HTML, it just isn't needed in this case. [1] http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13.6 http://www.w3.org/Protocols/rfc2616/rfc2616-sec13.html#sec13... [2] http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.44 http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14...