First off I want to say what an amazing and easy piece of software you have created. It has saved me so much time and frustration it’s unbelievable.
I installed a Wordpress site with WPFC / nginx fastcgi_cache. It’s running fast and I’m pleased.
I am however having one issue. I have lots of references to wp_is_mobile and ! wp_is_mobile through my theme files http://codex.wordpress.org/Function_Reference/wp_is_mobile This means if a visitor is on a mobile, I can show them a 320x50 ad for example, versus a 728x90, etc and make other layout changes (ie use it in widgets too). It’s very useful for me.
I’ve noticed with the wpfc cache though, that it will only cache whatever version of the page gets hit first. So if a mobile user hits a page first, the mobile version of the page will be cached and shown to all mobile and all desktop users. Obviously this is not ideal.
So my question is, does anyone know of a fix for this so that somehow the right version of the page can be shown to mobile or desktop users
Right now I have turned off WPFC by making $skip_cache 1; in wpfc.conf and it is working fine.
PS: If this cannot be resolved, am I best off enabling all cache options in W3 Total Cache? At the moment I only have object and database caching enabled (memcached).