varnish 3.0 + mobile app

Per Buer perbu at varnish-software.com
Thu Mar 13 09:49:03 CET 2014


Hi Paul.

Have you set up your VCL to handle PURGE requests as described in the
documentation? There is no PURGE support in the VCL you posted.

PURGE is not available our of the box. You need to add it through VCL.


On Thu, Mar 13, 2014 at 1:25 AM, Paul McInerney <
Paul.McInerney at faredge.com.au> wrote:

> Hi Per,
>
>
>
> Thank you for your quick response.
>
>
>
> I am currently using 'vary' on the deliver coming back from apache - see
> http://pastebin.com/AkwWrs62  ß called as an include at start of
> default.vcl
>
>
>
> Looking at the response headers I can see 'Vary: User-Agent' set.  Again,
> varnish is caching all variants but I still cannot purge.
>
>
>
> If I just execute  ` curl -I -X PURGE 'www.site.com/?mode=test'  `, it
> returns a MISS when all variants of that URL are being cached.
>
>
>
> I am still quite new to varnish so I am sorry if this seems like a novice
> mistake/misunderstanding.
>
>
>
> Cheers,
>
>
>
> Paul
>
>
>
> *From:* Per Buer [mailto:perbu at varnish-software.com]
> *Sent:* Friday, 7 March 2014 6:30 PM
>
> *To:* Paul McInerney
> *Cc:* varnish-misc at varnish-cache.org
> *Subject:* Re: varnish 3.0 + mobile app
>
>
>
> Hi Paul,
>
>
>
>
>
> On Thu, Mar 6, 2014 at 11:57 PM, Paul McInerney <
> Paul.McInerney at faredge.com.au> wrote:
>
> Hi all,
>
>
>
> We are currently developing a mobile android/iphone app for our website.
>
> When the app hits the varnish frontend, it has the user-agent string set
> as 'mobileapp'.
>
> So I have put in place a subroutine that correctly identifies the app and
> sets a
> custom x-device header to send to the backend for rendering the page(s)
> in the
>
> required format.
>
> This part is working well with the same URL now serving both formats of
> the page,
>
> however when I issue a purge against the URL, it purges the cached
> versions of the
>
> PC version of the page, and doesn't clear all variants (which should
> include the mobileapp
>
> version afaik )
>
>
>
> It's because you are doing it wrong. There is a very elegant solution to
> this; HTTP Vary.
>
>
>
> https://www.varnish-cache.org/docs/3.0/tutorial/vary.html
>
>
>
> You are trying to manipulate the hash, but it fails as you most likely
> forget to do the same manipulations when purging. This would not be a
> problem if you where to use Vary as all the variants would be connected to
> the same hash value.
>
>
>
> You can either Vary directly on the custom headers that you are creating
> or use it on the X-UA-Device Javier suggested. I like that.
>
>
>
>
>
>
>
> --
>
> <http://www.varnish-software.com/>
>
> *Per Buer*
> CTO | Varnish Software
> Phone: +47 958 39 117 | Skype: per.buer
>
>
> *We Make Websites Fly!**Winner of the Red Herring Top 100 Global Award
> 2013*
>
>
>



-- 
 <http://www.varnish-software.com/> *Per Buer*
CTO | Varnish Software
Phone: +47 958 39 117 | Skype: per.buer
We Make Websites Fly!

Winner of the Red Herring Top 100 Global Award 2013
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