Drupal: check if my process already running (started in the last 10 minutes / 600 seconds)

Solution:

<?php

namespace Drupal\my_custom_module1\Controller;
use Drupal\Core\Controller\ControllerBase;


class MyCustomClass123 extends ControllerBase
{
    public function main()
    {
        // check if my process already running (started in the last 10 minutes / 600 seconds)
        if(  $this->my_custom_module1_check_if_process_running() == 1) {

            return [
                '#type' => 'inline_template',
                '#template' => '{{ myhtml|raw }}',
                '#context' => [ 'myhtml' => date(" Y-m-d H:i:s ") . "Duplicate : Another instance of this process is already running! "]
            ];
        }

		// if process not running execute code here
	}


    public function my_custom_module1_check_if_process_running(){

        $my_custom_module1_process_last_timestamp = \Drupal::state()->get('my_custom_module1_process_last_timestamp') ?? 0;

		if(time() - $my_custom_module1_process_last_timestamp) < 600){
			// update / set system var 
			\Drupal::state()->set('my_custom_module1_process_last_timestamp', time() );
			return 0;
		}
        return 1;
    }
}