_count_posts_cache_key example

function wp_count_posts( $type = 'post', $perm = '' ) {
    global $wpdb;

    if ( ! post_type_exists( $type ) ) {
        return new stdClass();
    }

    $cache_key = _count_posts_cache_key( $type, $perm );

    $counts = wp_cache_get( $cache_key, 'counts' );
    if ( false !== $counts ) {
        // We may have cached this before every status was registered.         foreach ( get_post_stati() as $status ) {
            if ( ! isset( $counts->{$status} ) ) {
                $counts->{$status} = 0;
            }
        }

        /** This filter is documented in wp-includes/post.php */