gistfile1.txt

$slides = get_transient( 'home_slides_test' );

if( false === $slides ) {

	$slides = new WP_Query(array(
		'meta_query' => array(
			array(
				'key' => '_tdrfeatured',
				'value' => 'on',
				'compare' => '='
			)
		),
		'meta_key' => '_tdrorder',
		'posts_per_page' => 10,
		'orderby' => 'meta_value',
		'order' => 'ASC'
	));

	set_transient( 'home_slides_test', $slides, HOUR_IN_SECONDS );
}