Zend_Cache缓存

zend framework缓存技术

Zend Framework缓存技术主要由前端缓存和后端缓存组成

前端缓存:

Zend_Cache_Core 

Zend_Cache_Frontend_Output

Zend_Cache_Frontend_Function

Zend_Cache_Frontend_Class

Zend_Cache_Frontend_File

Zend_Cache_Frontend_Page

后端缓存:

Zend_Cache_Backend_File

Zend_Cache_Backend_Sqlite

Zend_Cache_Backend_Memcached

Zend_Cache_Backend_Apc

Zend_Cache_Backend_Xcache

Zend_Cache_Backend_ZendPlatform

 

 

缓存的清理

删除特定id的cache记录:$cache->remove('idToRemoe');

清除所有缓存:$cache->clean(Zend_Cache::CLEANING_MODE_ALL);

仅清除过期的:$cache->clean(Zend_Cache::CLEANING_MODE_OLD);

关于前台和后台的缓存中的配置参数就不用我说了哦.

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前端缓存core和后端memcached之间的使用(安装memcached就不用我介绍了,记得还要开启memcached的扩展):

这里我用单例的形式实现Zend_Cache

 public static function getInstance(){ if(self::$instance==null){ $config=Service_ConfigIni::getInstance(); self::$frontendName = $config->cache->frontend->name; self::$backendName = $config->cache->backend->name; self::$lifeTime = $config->cache->life->time->default; self::$cacheHost = $config->cache->host; self::$cachePort = $config->cache->port; self::$cachePersistent = $config->cache->persistent; $frontendOptions = array( //前端配置 'lifeTime' => self::$lifeTime, //设置缓存时间,如果不设置就永久缓存 'automatic_serialization' => true //是否序列化 ); $backendOptions = array( //后端配置 'servers' => array(array('host' => self::$cacheHost, //缓存地址 'port' => self::$cachePort, //缓存端口 'persistent' => self::$cachePersistent)), //否使用到memcached服务器的持久连接 'compression' => false //是否使用数据压缩 ); self::$instance=Zend_Cache::factory(self::$frontendName, self::$backendName, $frontendOptions, $backendOptions); } return self::$instance;}

 

下面就是在得到数据的时候来缓存了，使用如下:

if(!$result=$this->_cache->load($cacheAddress)){ if($cacheLifeTime!=''){ $this->_cache->setLifetime($cacheLifeTime); } $sql=$this->_db->quoteInto($sql,''); $result=$this->_db->query($sql); $result=$result->fetchAll(); $this->_cache->save($result,$cacheAddress);}

 

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 利用前端output和后端file来缓存数据

$cache = Zend_Cache::factory('Output','File',Array('lifetime'=>60*60),Array('cache_dir'=>'D:/page')); if(!$cache->start($diurnalid.'_'.$time)){ $ch = curl_init(); $timeout = 50; curl_setopt ($ch, CURLOPT_URL,$page_url); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt ($ch, CURLOPT_CONNECTTIMEOUT, $timeout); $content = curl_exec($ch); curl_close($ch); echo $content; $cache ->end(); }

 

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 利用前端page和后端file来缓存数据:

$frontendOptions = array('lifetime' => 24*3600, // 缓存寿命'debug_header' => false, // true是打开debug，通常设为false'regexps' => array( '/' => array('cache' => false), '/wdjk/issue' => array('cache'=>true,), //常见问题 '/blnc/getdiurnal/' => array('cache'=>true), //blnc下边的内容页 ), 'default_options' => array( 'cache_with_get_variables' => true,'cache_with_post_variables' => true,'cache_with_files_variables' => true,'cache_with_session_variables' => true, 'cache_with_cookie_variables' => true, 'make_id_with_post_variables' => true, 'make_id_with_cookie_variables' => false, 'make_id_with_session_variables' => false,'make_id_with_files_variables' => false,));$backendOptions = array('cache_dir' => 'D:/page', // 缓存存放路径，必须存在并可写);$cache = Zend_Cache::factory('Page', 'File', $frontendOptions, $backendOptions);$cache -> start();