If you observe how the popular caching plugins like WP Super Cache or W3TC utilize a cache folder within wp-content as well as other plugins who utilize uploads or cachable files it would be appropriate to create a folder within that structure. A side issue may arise if the user has a locked down folder … Read more
Have much to say about both W3TC and pagespeed, but will try to stay on the point. You should never have a JS external element in you HTML as part of the actual content, they should be either in the head element (but only scripts that must be loaded before the page finishes loading) or … Read more
If the data you’re fetching is only a single or at most a few instances, then the Transients API should do the job; keep in mind it also handles the auto-expiration for you. If the data could potentially be an unlimited (or at least medium-large) number of instances, especially if there may be even slightly … Read more
You should create a new instance from WP_REST_Response to set the Cache-Control value. <?php register_rest_route(‘wp/v2’, ‘/your_endpoint’, array( ‘methods’ => ‘GET’, ‘callback’ => ‘function_callback’, )); function function_callback($data) { $response = array( 1,2,3,4,5,6,7,8 ); $result = new WP_REST_Response($response, 200); // Set headers. $result->set_headers(array(‘Cache-Control’ => ‘max-age=3600’)); return $result; } Click here to get more info about directives.
It depends on the plugin and the cache method you are using. For example, as far as I remember, WP Super Cache offers two different cache methods: PHP Cache HTML Cache Using the first method creates PHP cache files that still load WordPress’s functions, but do not go through the whole loading process. If this … Read more
If you want to make sure the data bypasses any front-end caching, you should use AJAX to request the data and print it on the page. What I’d suggest is keeping your shortcode, but using AJAX to update it but creating a REST API endpoint. To do this you would abstract away the API request … Read more
Caching can help with things like Google search ranking as the pages will load faster than a site without a cache system in place so it’s perhaps not a case of needing X number of visits. You mentioned that you had some problems… what were the problems?
Although both of your options (that is, using transients or using a cron job) are viable, I’m a fan of using transients unless the dataset is exceptionally large or if there is some need to automate the process. Without seeing much of your current code, it’s difficult to give a working example. Nonetheless, if you … Read more
Take a look at the relevant bits of the database description for that table. Field Type option_name varchar(64) option_value longtext The key is 64 characters max. The value is longtext which should be more than you need. To have you caching work, you need a unique value for the key, but it doesn’t have to … Read more
Some caching plugins that cache entire pages or sites in .html files so obviously anything generated on a page will be “cached” in that file. Other kinds of caching stores information in memory (RAM). The answer differs some according to which kind of caching you are talking about, but… If I use transient api is … Read more