zend framework中使用memcache的方法

protected function _initMemcache()
{
$frontendOpts = array(
'caching' => true,
'lifetime' => 1800, //缓存生命周期3分钟，根据自己项目需求设置
'automatic_serialization' => true
);
$backendOpts = array(
'servers' =>array(
array(
'host' => '127.0.0.1',
'port' => 11211
)
),
'pression' => false
);
$memcache = Zend_Cache::factory('Core', 'Memcached', $frontendOpts, $backendOpts);
Zend_Registry::set('memcache',$memcache);
}

public function indexAction(){
 $memcache=Zend_Registry::get('memcache');
 //友情链接
 if(!$datalink = $memcache->load('datalink')){
 $link=new Blog_Model_Friendlink();
 $datalink = $link->listshi ();//print_r($datalink);die;
 $memcache->save($datalink, 'datalink');
 }
 $this->view->datalink=$datalink;
}