Drupal 8.0.0 beta 12. More info: https://www.drupal.org/node/2514176

core/lib/Drupal/Component/FileCache/ApcuFileCacheBackend.php

@@ -0,0 +1,36 @@
+<?php
+
+/**
+ * @file
+ * Contains \Drupal\Component\FileCache\ApcuFileCacheBackend.
+ */
+
+namespace Drupal\Component\FileCache;
+
+/**
+ * APCu backend for the file cache.
+ */
+class ApcuFileCacheBackend implements FileCacheBackendInterface {
+
+  /**
+   * {@inheritdoc}
+   */
+  public function fetch(array $cids) {
+    return apc_fetch($cids);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function store($cid, $data) {
+    apc_store($cid, $data);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function delete($cid) {
+    apc_delete($cid);
+  }
+
+}