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From Nick Kew <>
Subject Re: [users@httpd] GZIP DEFLATE and HTTPD
Date Wed, 07 Aug 2013 20:39:54 GMT

On 7 Aug 2013, at 21:02, Akash Jain wrote:

> But all modern browsers support it, right ?
> Are there any downsides for not using Vary:Accept Encoding  with mod_deflate?

If you omit a Vary header, you're telling the cache you can't supply
other variants.  That leaves the cache the choice of returning the
wrong contents to some clients, or returning an error.  Or perhaps
ignoring the HTTP spec and asking the backend every time,
which would undermine all the benefits of HTTP cacheing.

Sounds like akamai is broken.  Or rather, not configured to cache
negotiated contents.  Does it also refuse to cache multilingual pages?

Nick Kew
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