varnish-bugs at projects
Jan 23, 2007, 2:06 AM
Post #2 of 2
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#79: force nocache of objects
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Reporter: hmn | Owner: des
Type: defect | Status: assigned
Priority: normal | Milestone:
Component: varnishd | Version: trunk
Severity: normal | Resolution:
Keywords: |
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Changes (by des):
* status: new => assigned
* owner: phk => des
Old description:
> What are the correct cache headers to set if I need to tell varnish not
> to cache a file.
>
> Right now I use :
>
> Pragma: no-cache
> Cache-Control: s-maxage=0, max-age=0, must-revalidate, no-cache
>
> But sometimes I get some other users cached file, and it seems to be when
> I try to get a file in the exact same moment as som eother user.
>
> In vcl i have the following code to allow caching af some of the files
> even though a user is logged in.
>
> # force lookup even when cookies are present
> if (req.request == "GET" && req.http.cookie) {
> lookup;
> }
>
> And when i request the file I get the following in varnishlog
>
> 15 VCL_call c recv
> 15 VCL_return c lookup
> 15 VCL_call c miss
> 15 VCL_return c fetch
>
> 16 RxHeader b Pragma: no-cache
> 16 RxHeader b Cache-Control: s-maxage=0, max-age=0, must-
> revalidate, no-cache
> 16 RxHeader b Expires: Fri, 05 Jan 2007 08:57:03 GMT
> 16 RxHeader b Content-Length: 1555
> 16 RxHeader b Connection: close
> 16 RxHeader b Content-Type: text/javascript
> 15 TTL c 277100755 RFC 0 1168592154 1168592223 1167987423 0 0
> 15 VCL_call c fetch
> 15 VCL_return c insert
>
> Could it be the insert that is made by varnish that is the problem ?
New description:
What are the correct cache headers to set if I need to tell varnish not to
cache a file.
Right now I use :
{{{
Pragma: no-cache
Cache-Control: s-maxage=0, max-age=0, must-revalidate, no-cache
}}}
But sometimes I get some other users cached file, and it seems to be when
I try to get a file in the exact same moment as som eother user.
In vcl i have the following code to allow caching af some of the files
even though a user is logged in.
{{{
# force lookup even when cookies are present
if (req.request == "GET" && req.http.cookie) {
lookup;
}
}}}
And when i request the file I get the following in varnishlog
{{{
15 VCL_call c recv
15 VCL_return c lookup
15 VCL_call c miss
15 VCL_return c fetch
16 RxHeader b Pragma: no-cache
16 RxHeader b Cache-Control: s-maxage=0, max-age=0, must-
revalidate, no-cache
16 RxHeader b Expires: Fri, 05 Jan 2007 08:57:03 GMT
16 RxHeader b Content-Length: 1555
16 RxHeader b Connection: close
16 RxHeader b Content-Type: text/javascript
15 TTL c 277100755 RFC 0 1168592154 1168592223 1167987423 0 0
15 VCL_call c fetch
15 VCL_return c insert
}}}
Could it be the insert that is made by varnish that is the problem ?
Comment:
Reformatted the original message.
--
Ticket URL: <http://varnish.projects.linpro.no/ticket/79>
Varnish <http://varnish.projects.linpro.no/>
The Varnish HTTP Accelerator
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