Ticket #36203: 36203.patch

wp-includes/ms-blogs.php

@@ -454 +454 @@
         wp_cache_delete( 'current_blog_' . $blog->domain . $blog->path, 'site-options' );
         wp_cache_delete( 'get_id_from_blogname_' . trim( $blog->path, '/' ), 'blog-details' );
         wp_cache_delete( $domain_path_key, 'blog-id-cache' );
+
+        /**
+         * Fires immediately after a site has been removed from the object cache.
+         *
+         * @since 4.6.0
+         *
+         * @param int     $id Blog ID.
+         * @param WP_Site $blog
+         * @param String  $domain_path_key md5 of domain and path.
+         */
+        do_action( 'clean_site_cache', $blog_id, $blog, $domain_path_key );
 }
 
 /**