Ticket #12611: 12611.diff

wp-includes/query.php

@@ -1597 +1597 @@
          * @return array List of posts.
          */
         function &get_posts() {
-                global $wpdb, $user_ID;
+                global $wpdb, $user_ID, $_wp_using_ext_object_cache;
 
                 do_action_ref_array('pre_get_posts', array(&$this));
 
@@ -2507 +2507 @@
                         $this->posts[$i] = sanitize_post($this->posts[$i], 'raw');
                 }
 
+                // If using an object cache and the number of posts is greater than 20, skip updating the post caches.
+                if ( $_wp_using_ext_object_cache && $this->post_count > apply_filters('update_post_cache_threshold', 20) )
+                        $q['cache_results'] = false;
+
                 if ( $q['cache_results'] )
                         update_post_caches($this->posts, $post_type);