varnish 2.15 - bypass caching for mobile devices?

[Mike Franon]

Thank you for everyone's help.

What I did was utlize the F5 load balance iRules, and put in a rule if
a mobile agent to redirect to a different pool, and it resolved it.

Thanks

On Fri, Feb 18, 2011 at 11:40 AM, Caunter, Stefan <scaunter at topscms.com> wrote:
> My bad, old example. Here’s one with (?i) case insensitivity and a rewrite
> rule.
>
>
>
>
>
>   if (req.url ~ "^/(.*)" && req.http.host ~ "(?i)www.example.ca" &&
> req.http.user-agent ~ "(?i)iphone|htc|android|
>
> ipod|lg9700|blackberry9|nokiae|nokian|docomo|netfront|palmos|ipod|lg9700|htc|opera
> mini|palmsource|symbian OS|psp" && !req.http.referer ~ "(?i)example.ca") {
>
>                         set req.http.newhost = regsub(req.url, "^/(.*)",
> "http://richmobile.example.ca/\1");
>
>                         error 753 req.http.newhost;
>
>                 }
>
> if (obj.status == 753) {
>
>                 set obj.http.Location = obj.response;
>
>                 set obj.status = 302;
>
>                 return(deliver);
>
>         }
>
>
>
>
>
> Stefan Caunter
>
> Operations
>
> Torstar Digital
>
> m: (416) 561-4871
>
>
>
>
>
> From: varnish-misc-bounces at varnish-cache.org
> [mailto:varnish-misc-bounces at varnish-cache.org] On Behalf Of Caunter, Stefan
> Sent: February-18-11 11:33 AM
> To: Stig Bakken; Mike Franon
> Cc: varnish-misc at varnish-cache.org
> Subject: RE: varnish 2.15 - bypass caching for mobile devices?
>
>
>
> We use the vcl_error redirect technique with success:
>
>
>
> You can edit the example to suit different UAs and mobile views. The “no
> referrer” is important, to prevent continuous redirects once we land on the
> target site.
>
>
>
> in vcl_recv
>
>
>
>                 if (!req.http.referer && req.http.host ~ "www.example.ca" &&
> req.http.user-agent ~ "[aA]ndroid|[bB]lack[Bb]erry|
>
> DoCoMo|[iI][Pp]hone|NetFront|Opera Mini|PalmOS|PalmSource|Symbian
> OS|webOS|Ipod|lg9700|nokiae|nokian|blackberry9|htc") {
>
>                         error 751 "Moved Temporarily";
>
>                 }
>
>
>
> in vcl_error
>
>
>
> if (obj.status == 751) {
>
>                 set obj.http.Location = "http://richmobile.example.ca/";
>
>                 set obj.status = 302;
>
>                 return(deliver);
>
>         }
>
>
>
> Stefan Caunter
>
> Operations
>
> Torstar Digital
>
> m: (416) 561-4871
>
>
>
>
>
> From: varnish-misc-bounces at varnish-cache.org
> [mailto:varnish-misc-bounces at varnish-cache.org] On Behalf Of Stig Bakken
> Sent: February-18-11 10:37 AM
> To: Mike Franon
> Cc: varnish-misc at varnish-cache.org
> Subject: Re: varnish 2.15 - bypass caching for mobile devices?
>
>
>
> Browser recognition is a royal pain to begin with, and even more so with
> mobile browsers (their user agents may differ between requests in some
> cases).
>
>
>
> I would suggest you move all of the browser/device detection logic to your
> backend, but store the detected device in a cookie.  If varnish sees a
> request without that cookie, it redirects the user to a browser/device
> detection backend (using wurfl or deviceatlas for detection), which again
> redirects to the original page with an extra parameter in the URL which
> makes the final destination set the cookie.
>
>
>
> From there on, you can extract the device cookie with varnish and append it
> to your varnish hash, as per
>
> http://www.varnish-cache.org/trac/wiki/VCLExampleCacheCookies.
>
>
>
> Of course, the browser detection backend URL must not be cached. :)
>
>
>
>  - Stig
>
>
>
> On Fri, Feb 18, 2011 at 3:56 PM, Mike Franon <kongfranon at gmail.com> wrote:
>
> Hi,
>
> Right now everything has been working great with this config, but we
> discovered an issue with our mobile devices, not ever getting to the
> apache redirect we setup to go to our mobile site, since it gets the
> cached version of our home page.  Is there a way to say if a mobile
> device by agent to bypass caching all together and let it pass through
> to the apache redirect which then goes to another site all together?
>
>
> Thanks,
> Mike
>
>
> Here is my default.vcl
>
>
> sub vcl_recv {
> if (req.url ~ "^/$" || req.url ~ "^/samples"){
>                unset req.http.cookie;
>                return(lookup);
> }
>
> else {
>                return(pass);
> }
>
> }
> sub vcl_fetch {
>    if (req.url ~ "^/$" || req.url ~ "^/samples"){
>        set beresp.ttl = 300s;
>        set beresp.http.cache-control = "public, max-age = 300";
>        set beresp.http.X-CacheReason = "varnishcache";
>        unset beresp.http.set-cookie;
>        return(deliver);
>    }
> }
>
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>
>
> --
> Stig Bakken
> CTO, Zedge.net - free your phone!