cache empties itself?

Michael S. Fischer michael at
Fri Apr 4 04:46:46 CEST 2008

On Thu, Apr 3, 2008 at 7:37 PM, Ricardo Newbery <ric at> wrote:

>  URL versioning is usually not appropriate for html
> pages or other primary resources that are intended to be reached directly by
> the end user and whose URLs must not change.

Back to square one.  Are these latter resources dynamic, or are they static?

- If they are dynamic, neither your own proxies nor upstream proxies
should be caching the content.
- If they are static, then they should be cacheable for the same
amount of time all the way upstream (modulo protected URLs).

I've haven't yet seen a defensible need for varying cache lifetimes,
depending on the proximity of the proxy to the origin server, as this
request seems to be.  Of course, I'm open to being convinced otherwise


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