Using latest varnish from FreeBSD ports (version 1.1.2), is the
following VCL the "correct" solution to support browser shift-reloads to
get fresh content and actually update the cache?
sub vcl_hit {
if (req.http.Cache-Control ~ "no-cache") {
set obj.ttl = 0s;
pass;
}
}
As far as I understood vcl(7), this means:
1. fetch the object from cache (implicit in the fact that we're inside
vcl_hit)
2. set ttl to 0s, expiring it (so next requests will fetch new content)
3. pass to backend (so *this* request see new content)
Does this do what I expect it to do?
Is there a way to avoid hitting the backend twice?
Is there a way to do that in vcl_recv?
(I guess not, since there's no "obj" object available yet, there)
I guess I could use purge_url(...), except I have virtual hosts and it
wants a regexp and req.url could contain some special char (could it?).
--
Lapo Luchini - http://lapo.it/
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