varnish and mod_pagespeed

[Hugues Alary]

Hi there,

In order to save some time to people who might find this thread, here is
how to force mod_pagespeed to send a fully optimized version to varnish:

In your .vcl file:

sub vcl_recv() {
       set req.http.X-PSA-Blocking-Rewrite = "whatever-you-want";
}

In your pagespeed configuration:

ModPagespeedBlockingRewriteKey   "whatever-you-want"

It is worth noting that a feature meant to make reverse proxies like
varnish happy with mod_pagespeed is currently in beta, here is the relevant
link:
https://developers.google.com/speed/pagespeed/module/downstream-caching

-Hugues
Betabrand.com




On Thu, Jun 20, 2013 at 1:07 AM, Łukasz Rysiak <lury at critical.pl> wrote:

> David, please read this thread on google mps forum, where i described the
> same problem and got the solution from mps developers.
> https://groups.google.com/forum/#!topic/mod-pagespeed-discuss/j7X4uSckXlg
>
> You can add header which will force mps to do full optimisation before
> sending a response to varnish.
>
>
>
>
> Regards,
>
> Łukasz Rysiak
> Critical - Conversion Experts
> tel. 792 448 678
> http://critical.pl
>
>
>
> 2013/6/20 <me at ibotty.net>
>
> hi,
>>
>> > The problem is that varnish caches the first request - an unoptimized
>> > page. I wonder whether somebody has found a way to tell varnish to
>> > ignore the first request after the ttl is over and cache the second
>> > one?
>>
>> maybe you can configure mod_pagespeed to set a header when it is only
>> passing through the page.
>>
>> and i thought the recommended setup is to have mod_pagespeed before
>> varnish, but i've never set it up.
>>
>> good luck,
>>  tobias florek
>>
>>
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>>
>
>
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