At the time of this writing, W3TC only recognizes the php5-memcache (vs. php5-memcached) PHP client for memcached memory object caching system/software. Hence the “Memcache extension: Installed” in W3TC compatibility test for memcached. Memcached being useful and efficient as a caching method for database and/or object user/data caching via W3TC, even on a single server setup, … Read more
I have actually worked on a post yesterday (check it out here) and was hit by the same problem. I’m also new to the Transient API, never actually worked with it :-). The problem here is that for a specific loop you need to use a certain value outside of your transient. You are simply … Read more
I think I would write a wrapper function around custom fields, something like this: function get_post_transient( $post_ID, $meta_key, $update_function ) { $current_value = get_post_meta( $post_ID, $meta_key, true ); if ( is_array( $current_value ) && $current_value[‘expiration’] < date(‘U’) ) return $current_value[‘data’]; $new_value = call_user_function( $update_function, $post_ID ); update_post_meta( $post_ID, $meta_key, $new_value ); return $new_value[‘data’]; } and … Read more
Notice in the example that the tag does not have the type=”text/javascript” attribute. For some reason Rocket Loader requires data-cfasync=”false” to be used without the type=”text/javascript”… a bug? Your code does add the data-cfasync=”false” attribute, but does not override the WordPress behaviour of adding the type=”text/javascript” attribute also, which makes Rocket Loader not to “ignore” … Read more
I’m in the same boat, and I’m still figuring out what the best “approach” should be. It is not necessary to cache any of the WordPress core files (/wp-includes, /wp-admin, etc). You will have to cache some files that live in your theme. Stuff like the css, js, and any image resources you use in … Read more
There is no generic solution for this problem: The same menu can be rendered with different walkers on different pages, or plugins change the menu on some pages. You could extend your script to evaluate the differences to an untouched menu and build the necessary JavaScript on the fly … and cache that too … … Read more
Last-Modified header for visitors on the front-page It’s useful to see how the Last-Modified header is added to the feeds, in the wp::send_header() method. If we want to be able to use is_front_page(), then the filters wp_headers or send_header are probably applied to early. We could instead use the template_redirect hook to target the front-page, … Read more
Sounds like your expires headers are set to far in the future. The following rules can be added to your .htaccess Expires rules can be added to your Nginx server file to shorten the expires time down to 180 seconds. location ~* \/[^\/]+\/(feed|\.xml|.html|.HTML)\/? { expires 180; } I would also suggest installing the Nginx Proxy … Read more
I had a similar problem once with an aggressive database cache: the first check for an existing transient returned nothing – which was okay – but after I created the transient, I didn’t get it, because the empty cached result was always returned. So I built a dozen duplicated transients until I found the issue. … Read more
It may seem a bit of an odd question … but it does have a bit of an easy answer. I’ve been using W3 Total Cache on a multi-server setup for WordPress for 6+ months. For this project we decided to use memcached and not varnish. About WC Total Cache and CDN In W3 Total … Read more