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From Brian Akins <>
Subject Re: [PATCH] mod_disk cached fixed
Date Thu, 05 Aug 2004 12:17:48 GMT
Joshua Slive wrote:

> But it couldn't be as expensive as caching a variant for every 
> User-Agent that accesses your site.  What is probably needed is
> CacheVaryOn env-variable
> which would override the vary-matching decision to vary only on the 
> content of env-variable (which could be just on/off in this case), but 
> not touch the actual Vary: header, since down-stream caches wouldn't 
> have the extra logic needed determine if they needed to vary.

Yes.  Or maybe per header:

CacheVary User-Agent browser-gzip

where "browser-gzip" is an environment variable.

Brian Akins
Senior Systems Engineer
CNN Internet Technologies

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