--- /dev/null
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpKernel\CacheWarmer;
+
+/**
+ * Interface for classes that support warming their cache.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+interface WarmableInterface
+{
+ /**
+ * Warms up the cache.
+ *
+ * @param string $cacheDir The cache directory
+ */
+ public function warmUp($cacheDir);
+}