Moved cache drivers outside core to extensions (plugins)

plugins/cache-redis/Predis/Pipeline/FireAndForget.php

@@ -0,0 +1,36 @@
+<?php
+
+/*
+ * This file is part of the Predis package.
+ *
+ * (c) Daniele Alessandri <suppakilla@gmail.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Predis\Pipeline;
+
+use Predis\Connection\ConnectionInterface;
+
+/**
+ * Command pipeline that writes commands to the servers but discards responses.
+ *
+ * @author Daniele Alessandri <suppakilla@gmail.com>
+ */
+class FireAndForget extends Pipeline
+{
+    /**
+     * {@inheritdoc}
+     */
+    protected function executePipeline(ConnectionInterface $connection, \SplQueue $commands)
+    {
+        while (!$commands->isEmpty()) {
+            $connection->writeRequest($commands->dequeue());
+        }
+
+        $connection->disconnect();
+
+        return array();
+    }
+}