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   1  <?php
   2  
   3  /*
   4   * This file is part of the Symfony package.
   5   *
   6   * (c) Fabien Potencier <fabien@symfony.com>
   7   *
   8   * This code is partially based on the Rack-Cache library by Ryan Tomayko,
   9   * which is released under the MIT license.
  10   * (based on commit 02d2b48d75bcb63cf1c0c7149c077ad256542801)
  11   *
  12   * For the full copyright and license information, please view the LICENSE
  13   * file that was distributed with this source code.
  14   */
  15  
  16  namespace Symfony\Component\HttpKernel\HttpCache;
  17  
  18  use Symfony\Component\HttpFoundation\Response;
  19  
  20  /**
  21   * ResponseCacheStrategyInterface implementations know how to compute the
  22   * Response cache HTTP header based on the different response cache headers.
  23   *
  24   * @author Fabien Potencier <fabien@symfony.com>
  25   */
  26  interface ResponseCacheStrategyInterface
  27  {
  28      /**
  29       * Adds a Response.
  30       */
  31      public function add(Response $response);
  32  
  33      /**
  34       * Updates the Response HTTP headers based on the embedded Responses.
  35       */
  36      public function update(Response $response);
  37  }