Auto clean autoptimize cache once a month

clear-cache.php

<?php
namespace wppress;

class GarbageCollection
{
    public function __construct()
    {
        add_filter('cron_schedules', function ($schedules) {
            $schedules['weekly'] = array(
                'interval' => 604800,
                'display'  => __('Once a Week'),
            );
            $schedules['monthly'] = array(
                'interval' => 2635200,
                'display'  => __('Once a month'),
            );
            return $schedules;
        });
        if (!wp_next_scheduled('wppress/garbage/clear')) {
            wp_schedule_event(time(), 'monthly', 'wppress/garbage/clear');
        }
        add_action('wppress/garbage/clear', [ &$this, 'clear']);
    }
    public function clear()
    {
        if (class_exists('\autoptimizeCache')) {
            /* Clear autoptimize cache once a month */
            \autoptimizeCache::clearall();
        }
    }
}
new GarbageCollection();
?>