clean_attachment_cache() WordPress Function

function clean_attachment_cache( $id, $clean_terms = false ) {
	global $_wp_suspend_cache_invalidation;

	if ( ! empty( $_wp_suspend_cache_invalidation ) ) {
		return;
	}

	$id = (int) $id;

	wp_cache_delete( $id, 'posts' );
	wp_cache_delete( $id, 'post_meta' );

	if ( $clean_terms ) {
		clean_object_term_cache( $id, 'attachment' );
	}

	/**
	 * Fires after the given attachment's cache is cleaned.
	 *
	 * @since 3.0.0
	 *
	 * @param int $id Attachment ID.
	 */
	do_action( 'clean_attachment_cache', $id );
}
Uses	Description
wp-includes/cache.php:wp_cache_delete()	Removes the cache contents matching key and group.
wp-includes/taxonomy.php:clean_object_term_cache()	Removes the taxonomy relationship to terms from the cache.
wp-includes/plugin.php:do_action()	Calls the callback functions that have been added to an action hook.
wp-includes/post.php:clean_attachment_cache	Fires after the given attachment’s cache is cleaned.