2.0.0 redis adapter bug

 $frontCache = new \Phalcon\Cache\Frontend\Data(array(
    "lifetime" => 172800
 ));

 $cache = new Phalcon\Cache\Backend\Redis($frontCache, array(
    'host' => 'localhost',
    'port' => 6379,
    'auth' => 'foobared',
    'persistent' => false
 ));

 $cache->save('my-data', array(1, 2, 3, 4, 5));

 //delete cache not working
  $cache->delete('my-data');

delete not working