52a06d5ed4
Moves the caching of RSS feeds requested via `fetch_feed()` from single site transients (`get|set|delete_transient()`) to global transients (`get|set|delete_site_transient()`). On multisite installs of WordPress, this replaces per site caching with the global multisite cache to allow a single cache to be shared between all sites. This reduces the amount of data stored in the database and improves performance of feeds when multiple sites are ingesting the same URL. Props rollybueno, spacedmonkey, peterwilsoncc. Fixes #63719. Built from https://develop.svn.wordpress.org/trunk@60524 git-svn-id: http://core.svn.wordpress.org/trunk@59860 1a063a9b-81f0-0310-95a4-ce76da25c4cd
139 lines
3.2 KiB
PHP
139 lines
3.2 KiB
PHP
<?php
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/**
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* Feed API: WP_Feed_Cache_Transient class
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*
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* @package WordPress
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* @subpackage Feed
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* @since 4.7.0
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*/
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/**
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* Core class used to implement feed cache transients.
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*
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* @since 2.8.0
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* @since 6.7.0 Now properly implements the SimplePie\Cache\Base interface.
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* @since 6.9.0 Switched to Multisite's global cache via the `*_site_transient()` functions.
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*/
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#[AllowDynamicProperties]
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class WP_Feed_Cache_Transient implements SimplePie\Cache\Base {
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/**
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* Holds the transient name.
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*
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* @since 2.8.0
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* @var string
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*/
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public $name;
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/**
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* Holds the transient mod name.
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*
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* @since 2.8.0
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* @var string
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*/
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public $mod_name;
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/**
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* Holds the cache duration in seconds.
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*
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* Defaults to 43200 seconds (12 hours).
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*
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* @since 2.8.0
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* @var int
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*/
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public $lifetime = 43200;
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/**
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* Creates a new (transient) cache object.
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*
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* @since 2.8.0
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* @since 3.2.0 Updated to use a PHP5 constructor.
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* @since 6.7.0 Parameter names have been updated to be in line with the `SimplePie\Cache\Base` interface.
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*
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* @param string $location URL location (scheme is used to determine handler).
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* @param string $name Unique identifier for cache object.
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* @param Base::TYPE_FEED|Base::TYPE_IMAGE $type Either `TYPE_FEED` ('spc') for SimplePie data,
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* or `TYPE_IMAGE` ('spi') for image data.
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*/
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public function __construct( $location, $name, $type ) {
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$this->name = 'feed_' . $name;
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$this->mod_name = 'feed_mod_' . $name;
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$lifetime = $this->lifetime;
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/**
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* Filters the transient lifetime of the feed cache.
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*
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* @since 2.8.0
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*
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* @param int $lifetime Cache duration in seconds. Default is 43200 seconds (12 hours).
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* @param string $name Unique identifier for the cache object.
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*/
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$this->lifetime = apply_filters( 'wp_feed_cache_transient_lifetime', $lifetime, $name );
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}
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/**
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* Saves data to the transient.
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*
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* @since 2.8.0
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*
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* @param array|SimplePie\SimplePie $data Data to save. If passed a SimplePie object,
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* only cache the `$data` property.
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* @return true Always true.
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*/
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public function save( $data ) {
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if ( $data instanceof SimplePie\SimplePie ) {
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$data = $data->data;
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}
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set_site_transient( $this->name, $data, $this->lifetime );
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set_site_transient( $this->mod_name, time(), $this->lifetime );
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return true;
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}
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/**
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* Retrieves the data saved in the transient.
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*
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* @since 2.8.0
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*
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* @return array Data for `SimplePie::$data`.
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*/
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public function load() {
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return get_site_transient( $this->name );
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}
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/**
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* Gets mod transient.
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*
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* @since 2.8.0
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*
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* @return int Timestamp.
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*/
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public function mtime() {
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return get_site_transient( $this->mod_name );
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}
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/**
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* Sets mod transient.
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*
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* @since 2.8.0
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*
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* @return bool False if value was not set and true if value was set.
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*/
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public function touch() {
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return set_site_transient( $this->mod_name, time(), $this->lifetime );
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}
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/**
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* Deletes transients.
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*
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* @since 2.8.0
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*
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* @return true Always true.
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*/
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public function unlink() {
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delete_site_transient( $this->name );
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delete_site_transient( $this->mod_name );
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return true;
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}
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}
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