Hi!
It's seems to be correct. Be careful with cacheable and ttl=0 answers.
Some simple debuging:
sub vcl_fetch {
# Varnish determined the object was not cacheable
if (!obj.cacheable) {
set obj.http.X-Cacheable = "No";
} elsif (obj.ttl > 0s) {
set obj.http.X-Cacheable = "Yes";
} else {
set obj.http.X-Cacheable = "Yes: ttl=0";
}
[...]
}
Good luck!
On dl, feb 01, 2010 at 09:42:58 +0100, Luc Stroobant wrote:
> Hello list,
>
> I have a vcl-config with a snippet like the one on:
> http://varnish-cache.org/wiki/VCLExampleLongerCaching
>
> sub vcl_fetch {
> if (obj.cacheable) {
> unset obj.http.expires;
> set obj.http.cache-control = "max-age = 900";
> set obj.ttl = 2w;
> set obj.http.magicmarker = "1";
> }
> }
>
> sub vcl_deliver {
> if (resp.http.magicmarker) {
> /* unset marker and serve it for upstream as new */
> unset resp.http.magicmarker;
> set resp.http.age = "0";
> }
> }
>
> We used that in an attempt to override the expires headers from static
> files for a site and keep them in Varnish cache. We don't want to cache
> an dynamic (PHP) page.
>
> At first sight, everything went fine. But once the load rised a bit, we
> noticed that dynamic pages are sometimes cached.
> I've been checking the headers and it looks like the expires header for
> dynamic pages is also removed. I don't think the headers from the
> (first) request below should be considerd obj.cacheable according to
> the definition on http://varnish-cache.org/wiki/VCL
> Or did I miss something? Is this a mistake in my config or a possible
> Varnish issue?
>
> Test without the vcl snippet.
> PHP page: unmodified headers and not cached, as expected:
>
> HTTP/1.1 200 OK
> Server: Apache/2.2.3 (CentOS)
> X-Powered-By: PHP/5.2.12
> Set-Cookie: SESSbc5f9ce1c97eee1824d1ab6sdfsdfssf70k2hqq7mgo6;
> expires=Wed, 24-Feb-2010 22:58:21 GMT; path=/; domain=removed
> Expires: Sun, 19 Nov 1978 05:00:00 GMT
> Last-Modified: Mon, 01 Feb 2010 19:25:01 GMT
> Cache-Control: store, no-cache, must-revalidate
> Cache-Control: post-check=0, pre-check=0
> Content-Type: text/html; charset=utf-8
> Content-Length: 56194
> Date: Mon, 01 Feb 2010 19:25:02 GMT
> X-Varnish: 963899298
> Age: 0
> Via: 1.1 varnish
> Connection: close
>
>
> With the config:
> PHP page, Expires header removed and cache-control is set
>
> HTTP/1.1 200 OK
> Server: Apache/2.2.3 (CentOS)
> X-Powered-By: PHP/5.2.12
> Set-Cookie: SESSbc5f9ce1c97eee1824d1ab670ce3057b=91dpgvghvkmonso1;
> expires=Wed, 24-Feb-2010 23:21:04 GMT; path=/; domain=removed
> Last-Modified: Mon, 01 Feb 2010 19:47:44 GMT
> Content-Type: text/html; charset=utf-8
> Content-Length: 59418
> cache-control: max-age = 900
> Date: Mon, 01 Feb 2010 19:47:48 GMT
> X-Varnish: 1790685114
> Via: 1.1 varnish
> Connection: close
> age: 0
>
> I used the same VCL-code in vcl_fetch for both examples and for static
> files, everything works as expected. Any ideas?
> (Running on Varnish 2.0.6)
>
> Luc
>
> sub vcl_recv {
>
> # Add a unique header containing the client address
> remove req.http.X-Forwarded-For;
> set req.http.X-Forwarded-For = client.ip;
>
> /* Don't cache accept */
> if (req.http.host ~ "^some.host$") {
> return (pass);
> }
>
> if (req.url ~ "\.(css|js|jpg|jpeg|gif|ico|png)$") {
> unset req.http.cookie;
> lookup;
> }
>
> /* Never cache php files... */
> if (req.url ~ ".*\.php") {
> return (pass);
> }
>
> /* ... or Apache server status */
> if (req.url ~ ".*/server-status$") {
> return (pass);
> }
> }
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> varnish-misc@projects.linpro.no
> http://projects.linpro.no/mailman/listinfo/varnish-misc
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