[whatwg] Proposal: add attributes etags & last-modified to <link> element.

[Robert O'Callahan]

2010/9/19 Julian Reschke <julian.reschke at gmx.de>

> On 15.09.2010 19:45, Gavin Peters (蓋文彼德斯) wrote:
>
>> Hi, I'm working on link tags inside of chrome.  We're now experimenting
>> with an optimization that uses link tags and headers to avoid round
>> trips for cache validation in many cases.
>> ...
>>
>
> Clarifying: essentially that's a workaround for resources for which the
> actual cache information returned by HTTP GET isn't accurate, right? Which
> of course leads to the question: if the maintainers of a site can't get
> their cache information right, what makes you think they can get their HTML
> right instead?
>

No, it's a performance optimization. I presume that if the link attributes
indicate that the browser's cached resource is valid, the browser does not
issue a network request to validate the resource.

Rob
-- 
"Now the Bereans were of more noble character than the Thessalonians, for
they received the message with great eagerness and examined the Scriptures
every day to see if what Paul said was true." [Acts 17:11]
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