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From Vadim Gritsenko <>
Subject Re: [proposal] fixing the encoding problems
Date Tue, 18 Mar 2003 02:51:11 GMT
Pier Fumagalli wrote:

>But there is a problem... Proxies and caches...

AFAIK (took a look at spec too ;):

>If, for example, in my corporation there are two guys, one using Windows in
>jp and one using Linux in en_US, if the first guy requests
>"", I'll deliver the page the first time in jp,
>encoded in shift_jis (let's not track content-type for a sec).

Vary: Content-Encoding

>Now, when the second guy requests the same page, I'd have to send it in
>en_US maybe encoded in iso-8859-1...

Vary: Content-Encoding

>But my corporation proxy (or the cocoon cache), will cache the first version
>it hits, so, to both of them, I'll end up serving the same Japanese
>shift_jis content...

Now, proxy will have 2 objects as it knows that responses were different.

>Not good... Needs more thinking indeed...


PS Worse case schenario is
Vary: *
which effectively disables any caching...


>    Pier

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