This guide details the setup of an advanced queue in CLI mode for the Mailchimp WooCommerce plugin, enhancing performance by running processes in the background, independent of web traffic.

• WP-CLI installed.
• Knowledge of WP-CLI and WordPress installation locations on your server.
• Ability to edit the functions.php file, preferably using a child theme or suitable plugin.

1. Edit functions.php File: Include the following code:

   function asdds_disable_default_runner() {
       if ( class_exists( 'ActionScheduler' ) ) {
           remove_action( 'action_scheduler_run_queue', array( ActionScheduler::runner(), 'run' ) );
       }
   }
   add_action( 'init', 'asdds_disable_default_runner', 10 );

Run the queue manually using WP-CLI:

wp --url=https://examplestore.com --path=/full/path/to/install/ action-scheduler run

Stop with control + c.

1. Set up a cron job or use a process manager like Monit or Supervisord.
2. For cron, edit the crontab:

   crontab -e

   Add:

   * * * * * wp --url=https://examplestore.com --path=/full/path/to/install/ action-scheduler run

   Or use a process manager with:

   /usr/bin/wp --url=http://yourdomain.com --path=/full/path/to/install/ queue listen