Delete Object Cache (Memcache)

Love this plugin, but one little bug, if you are using an external object cache (like APC or Memcache) and you look at your posts list and see a missing featured image, then you add one, the list still shows that you don’t have a featured image (or if you change one it shows the old). This is due to caching. I created this simple function for my functions file to solve it. It’d be great if you can integrate this into your code:

/***
*
* ADMIN: Clear cache for featured image column plugin when new featured image
* only useful as long as featured image column plugin is active
* could be a conditional to check if meta_key=_thumbnail_id, but figured the lookup isn’t worth it, just delete the cache on all post meta updates for a post
*
****/

function fic_thumbnail_updated_actions($meta_id, $post_id) {

$post_id = (int) $post_id;
$cache_key = “featured_image_post_id-{$post_id}-_thumbnail”;
$cache = wp_cache_delete( $cache_key, null );

}
add_action( ‘deleted_post_meta’, ‘fic_thumbnail_updated_actions’, 10, 2 );
add_action( ‘updated_post_meta’, ‘fic_thumbnail_updated_actions’, 10, 2 );
add_action( ‘added_post_meta’, ‘fic_thumbnail_updated_actions’, 10, 2 );