code: private function addHeaders()
      {
          self::response()->addHeader('Cache-Control', 'no-cache, no-store, must-revalidate'); // HTTP 1.1
          self::response()->addHeader('Pragma', 'no-cache'); // HTTP 1.0
          self::response()->addHeader('Expires', '-1'); // Proxies
      }
docs: add expiration headers to avoid caching.