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
From the source: Here (source) is the mfunc part in the 0.9.2.9 version of the W3TC plugin where the regular expression is: $buffer = preg_replace_callback(‘~<!–\s*mfunc\s*’ . W3TC_DYNAMIC_SECURITY . ‘(.*)–>(.*)<!–\s*/mfunc\s*’ . W3TC_DYNAMIC_SECURITY . ‘\s*–>~Uis’, array( &$this, ‘_parse_dynamic_mfunc’ ), $buffer); From this it looks like the setup should be <!– mfunc W3TC_DYNAMIC_SECURITY code1–> code2 <!– /mfunc W3TC_DYNAMIC_SECURITY … Read more
Your issue is not as much priming (which only happens first time) but that cache refreshes in solution you are using are synchronous. Transients API is not dealing with updates by itself, it is handled by code that calls it. So it doesn’t implement async updates. On other hand there is nothing that prevents implementing … Read more
Generally speaking, you could use the WP Transients API to save the query. // Get any existing copy of our transient data if ( false === ( $special_query_results = get_transient( ‘special_query_results’ ) ) ) { // It wasn’t there, so regenerate the data and save the transient $special_query_results = new WP_Query( ‘cat=5&order=random&tag=tech&post_meta_key=thumbnail’ ); set_transient( ‘special_query_results’, … Read more
The object cache is not reliable, in any case. For example, Memcached has its own system to purge items in cache: if it “thinks” that is too full it start purging items in way that is just not predictable. It is (or should be) known that when you have an external object cache system in … Read more
The communication with the server happens via Ajax. I once wrote a high-level overview of Ajax in WordPress, but you can find many more examples on this site and around the web. Next, you have to do a query that will find similar titles. I found some questions that might help you on Stack Overflow: … Read more