Transients do not expire if expiration time is not provided. Note that you can inadvertently cause this if you provide zero value for the time. You should be aware that this still doesn’t guarantee transient will stay alive. That’s shouldn’t be relied on. As a core implementation detail it will delete all database transients on … 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
Place wherever your code can access Include tlc-transients.php during your plugin/theme load (or otherwise before init hook) Follow examples from readme for library’s API use PS in [still not very common] case you are using Composer you can also just require markjaquith/wp-tlc-transients in composer.json.
According to code in OP, the only thing that changes the result is the $tags variable. In this case, the easiste way to do the trick is make the $tags part of the transient name. function get_posts_by_tags($tags){ $transient=”rest-posts-” . md5(serialize($tags)); if(false === ($result = get_transient($transient))) { // the rest of yout function here … if … Read more
Yes, social counts are a great use case for using transients. Aside from the slow page loading, as you mentioned, this will also help prevent you from blowing through API limits if the external requests are being made on every page load. Let’s say you have it set to cache for 30 minutes and the … Read more
The db query would look like this: SELECT `option_name` AS `name`, `option_value` AS `value` FROM $wpdb->options WHERE `option_name` LIKE ‘%transient_%’ ORDER BY `option_name` To sort the results by their function (site transients, timeouts) use a function like this: add_action( ‘shutdown’, function(){ global $wpdb; $sql = “SELECT `option_name` AS `name`, `option_value` AS `value` FROM $wpdb->options WHERE … Read more
TL;DR WordPress part of transient handling is solid, everything is pretty precise Transients use object cache instead of data store for non-default implementations It means that some back-end cache systems get rid of cache that hasn’t been accessed recently Bottom line: it’s not WordPress fault, it only depends on how your back-end cache is set … Read more
For development I would advise to always work with WP_DEBUG set to true and do the following: $key = ‘transient_key’; if( !WP_DEBUG && ( false !== ($transient = get_transient($key)) ){ /* Generate transient manually */ $expiration = 24*60*60;//How long to keep for set_transient($key,$transient, $expiration); } In general – it should be fine deleting transients, as … Read more
Catching the weather API remote data The msg, you’re showing in your question is basically the result from the weather API. And it says, that there’s no data available for your location. The first thing you want to do is some research in the Codex and the “WP HTTP API”. The right/WP way to grab … Read more
Transients are great when you’re doing complex queries in your themes and plugins. I tend to use transients for things like menus and showing other things like Tweets from Twitter in a sidebar for example. I wouldn’t use them for absolutely everything more-so just temporary pieces of data that can be cached. Keep in mind … Read more