remove item caching from cache manager.

system/cache.php

@@ -9,13 +9,6 @@ class Cache {
 	 */
 	public static $drivers = array();
 
-	/**
-	 * All of the items retrieved by the cache drivers.
-	 *
-	 * @var array
-	 */
-	public static $items = array();
-
 	/**
 	 * Get a cache driver instance. If no driver name is specified, the default
 	 * cache driver will be returned as defined in the cache configuration file.
@@ -66,9 +59,9 @@ class Cache {
 	 */	
 	public static function get($key, $default = null, $driver = null)
 	{
-		if (isset(static::$items[$driver][$key]))
+		if (is_null($driver))
 		{
-			return static::$items[$driver][$key];
+			$driver = Config::get('cache.driver');
 		}
 
 		if (is_null($item = static::driver($driver)->get($key)))
@@ -76,7 +69,7 @@ class Cache {
 			return is_callable($default) ? call_user_func($default) : $default;
 		}
 
-		return static::$items[$driver][$key] = $item;
+		return $item;
 	}
 
 	/**
@@ -91,7 +84,7 @@ class Cache {
 	 */
 	public static function remember($key, $default, $minutes, $driver = null)
 	{
-		if ( ! is_null($item = static::get($key)))
+		if ( ! is_null($item = static::get($key, null, $driver)))
 		{
 			return $item;
 		}