I have a script for my Magento 1 stores to clean old Redis keys:
<?php
count($argc) or die('<pre>:P</pre>');
ini_set('memory_limit','1024M');
set_time_limit(0);
error_reporting(E_ALL | E_STRICT);
require_once '../app/Mage.php';
Mage::app()->getCache()->getBackend()->clean('old');
?>
which I run every night with a cron job. Can I use the same script for Magento 2?