Changeset 55657 for trunk/src/wp-includes/user.php

Timestamp:

04/18/2023 11:48:46 AM (20 months ago)

Author:

spacedmonkey

Message:

Users: Cache database queries within WP_User_Query class.

Cache the results of database queries within WP_User_Query class. Only cache queries that are requesting 3 or less fields so that caches are not storing full user objects. Cache results are stored in a new global cache group named users-queries. Add a new parameter to WP_User_Query called cache_results to allow developers to opt out of a receiving cached results. cache_results parameter defaults to true. Also add a new helper function called wp_cache_set_users_last_changed, similar to wp_cache_set_posts_last_changed that incroments last changed value in cache group users. Ensure that wp_cache_set_users_last_changed is called whenever user / user meta is modified for proper cache invalidation.

Props johnjamesjacoby, spacedmonkey, westi, dd32, strategio, srikanthmeenakshi, OllieJones, khoipro, rjasdfiii, flixos90, mukesh27, peterwilsoncc.
Fixes #40613.

File:

• trunk/src/wp-includes/user.php (modified) (2 diffs)

trunk/src/wp-includes/user.php

@@ -1908 +1908 @@
 
     wp_cache_delete( $user->ID, 'user_meta' );
+    wp_cache_set_users_last_changed();
 
     /**
@@ -5017 +5018 @@
     );
 }
+
+/**
+ * Sets the last changed time for the 'users' cache group.
+ *
+ * @since 6.3.0
+ */
+function wp_cache_set_users_last_changed() {
+    wp_cache_set( 'last_changed', microtime(), 'users' );
+}