tweaked cache and session namespacing.

system/cache/memcached.php

@@ -0,0 +1,53 @@
+<?php namespace System\Cache;
+
+use System\Config;
+
+class Memcached implements Driver {
+
+	/**
+	 * Determine if an item exists in the cache.
+	 *
+	 * @param  string  $key
+	 * @return bool
+	 */
+	public function has($key)
+	{
+		return ( ! is_null($this->get($key)));
+	}
+
+	/**
+	 * Get an item from the cache.
+	 *
+	 * @param  string  $key
+	 * @return mixed
+	 */
+	public function get($key)
+	{
+		return (($cache = \System\Memcached::instance()->get(Config::get('cache.key').$key)) !== false) ? $cache : null;
+	}
+
+	/**
+	 * Write an item to the cache.
+	 *
+	 * @param  string  $key
+	 * @param  mixed   $value
+	 * @param  int     $minutes
+	 * @return void
+	 */
+	public function put($key, $value, $minutes)
+	{
+		\System\Memcached::instance()->set(Config::get('cache.key').$key, $value, 0, $minutes * 60);
+	}
+
+	/**
+	 * Delete an item from the cache.
+	 *
+	 * @param  string  $key
+	 * @return void
+	 */
+	public function forget($key)
+	{
+		\System\Memcached::instance()->delete(Config::get('cache.key').$key);
+	}
+
+}