Changeset 45910 for trunk/src/wp-includes/class-wp-site.php

Timestamp:

08/29/2019 12:41:45 PM (4 years ago)

Author:

flixos90

Message:

Multisite: Improve performance by caching not found lookups for sites and networks.

With this change, the result of a site or network lookup by ID will be cached even if the ID does not exist. When a new site or network is created, the cache for the respective new ID is cleared.

Props mnelson4, nielsdeblaauw.
Fixes #42251.

File:

• trunk/src/wp-includes/class-wp-site.php (modified) (1 diff)

trunk/src/wp-includes/class-wp-site.php

@@ -163 +163 @@
         $_site = wp_cache_get( $site_id, 'sites' );
 
-        if ( ! $_site ) {
+        if ( false === $_site ) {
             $_site = $wpdb->get_row( $wpdb->prepare( "SELECT * FROM {$wpdb->blogs} WHERE blog_id = %d LIMIT 1", $site_id ) );
 
             if ( empty( $_site ) || is_wp_error( $_site ) ) {
-                return false;
+                $_site = -1;
             }
 
             wp_cache_add( $site_id, $_site, 'sites' );
+        }
+
+        if ( is_numeric( $_site ) ) {
+            return false;
         }