function _wc_get_cached_product_terms( $product_id, $taxonomy, $args = array() ) {
	$cache_key   = 'wc_' . $taxonomy . md5( wp_json_encode( $args ) );
	$cache_group = WC_Cache_Helper::get_cache_prefix( 'product_' . $product_id ) . $product_id;
	$terms       = wp_cache_get( $cache_key, $cache_group );

	if ( false !== $terms ) {
		return $terms;
	}

	$terms = wp_get_post_terms( $product_id, $taxonomy, $args );

	wp_cache_add( $cache_key, $terms, $cache_group );

	return $terms;
}