_cache()
			/**
			 * When an external object cache is in use, and when wp_cache_flush_runtime() is not available, then
			 * normally the cache will not be flushed after processing a batch of actions (to avoid a performance
			 * penalty for other processes).
			 *
			 * This filter makes it possible to override this behavior and always flush the cache, even if an external
			 * object cache is in use.
			 *
			 * @since 1.0
			 *
			 * @param bool $flush_cache If the cache should be flushed.
			 */
			|| apply_filters( 'action_scheduler_queue_runner_flush_cache', false )
		) {
			wp_cache_flush();
		}
	}

	public function add_wp_cron_schedule( $schedules ) {
		$schedules['every_minute'] = array(
			'interval' => 60, // in seconds
			'display'  => __( 'Every minute', 'action-scheduler' ),
		);

		return $schedules;
	}
}