[PATCH] stale-while-revalidate updated

[Geoff Simmons]

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On 08/28/2014 08:26 AM, Nils Goroll wrote:
> 
> This definitely is the case with fgs' proposed patch,
> vcl_backend_fetch still has the final word.

All right, then it really might be bike-shedding to worry too much
about whether it's done in the binary or in VCL -- although I'd come
down on the side of VCL, considering what phk had to say, because it
seems to me that s-w-r is about caching policy, not about the network
protocol.

But what's crucial in my view is that VCL can veto changes in
beresp.grace -- I'd worry a lot if that were left to backends and I
couldn't overrule them.

On 08/28/2014 08:57 AM, Poul-Henning Kamp wrote:
> -------- Btw, mildly related to this:  Long time ago we talked
> about being able to work on sub-parts of http headers:
> 
> if (INT(beresp.http.cache-control.max-age, 0) > 1200) { set
> beresp.http.cache-contro.max-age = 1200; }

+1
Cache-Control and other headers like Surrogate-Control are certain to
become more sophisticated and relevant for Varnish over time, and this
is just what we need to work with them.


Best,
Geoff
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