Trouble understanding Varnishlog

. gmoniey at gmail.com
Tue Jan 4 21:14:35 CET 2011


Hi Flavio,

Thanks for your reply. I'm curious as to why you suggested I remove the
X-Varnish header? I guess my confusion is why the header doesn't include 2
numbers, even though it is a cache HIT, and the HIT counter is being
incremented.

Thanks.

On Tue, Jan 4, 2011 at 4:22 AM, Flavio Torres <fla_torres at yahoo.com.br>wrote:

>
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> On 01/04/2011 02:31 AM, . wrote:
> > I'm using HTTP/1.1, so I don't believe that is the issue.
> >
>
> Hello!
>
> I?m sorry I miscommunicated to you, I told u about HTTP/1.1 because
> your header says: 'Cache-Control: private, max-age=0, must-revalidate'
> and varnish should respect cache requests with private or max-age=0.
>
> > Any idea why X-Varnish would indicate a cache miss by not
> > specifying
> 2 numbers?
>
> I suggest you the following vcl:
>
> # for security reasons :)
> acl header {
>        "localhost";
> }
>
> # vcl_deliver
>
> sub vcl_deliver {
>        if (obj.hits > 0) {
>                set resp.http.X-Cache = "HIT";
>        } else {
>                set resp.http.X-Cache = "MISS";
>        }
>
>        if (client.ip ~ header) {
>                set resp.http.X-Served-By = server.hostname;
>                set resp.http.X-Client-IP = client.ip;
>                set resp.http.X-Cache-Hits = obj.hits;
>        } else {
>                unset resp.http.X-Server-ID;
>        }
>
>        # set resp.http.X-Cache-Hits = obj.hits;
>        set resp.http.X-Age = resp.http.Age;
>        unset resp.http.Age;
>
>        remove resp.http.X-Varnish;
>        remove resp.http.Via;
>
> }
>
>
> And try:
>
> $ curl -I -H "Host: www.yourdomain.com"
> http://localhost/upload/canal/22/topo.jpg
> HTTP/1.1 200 OK
> Last-Modified: Fri, 22 Oct 2010 15:02:47 GMT
> Cache-Control: max-age=86400, public
> Expires: Tue, 04 Jan 2011 12:15:32 GMT
> X-SID: 01
> Content-Type: image/jpeg
> VID: 01
> Content-Length: 5291
> Date: Tue, 04 Jan 2011 12:11:59 GMT
> Connection: keep-alive
> X-Cache: HIT # HIT lol
> X-Served-By: cache-01.oi.com.br
> X-Client-IP: 127.0.0.1
> X-Cache-Hits: 1355 # hits
> X-Age: 86187
>
>
> hope this helps
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> =nTOZ
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