Auto clear Autoptimize cache before it gets too large

 In Functions, WordPress Plugins

Autoptimize plugin cache size can grow out of control rapidly before you can notice and that can become a huge problem for your WordPress site. The code below will schedule cron jobs to delete every week and month.

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 */
new GarbageCollection();

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Showing 2 comments
  • webdev

    This is not working.
    I have tried this on my site.

    • Nuno Morais Sarmento

      Hi there,

      Thank you for passing by on my website and for trying to use my code snippet. What is the log output of your cronjob?

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