Question

我正在使用Zend_Session_SaveHandler_DbTable将会话存储在表中

我的探查器告诉我，每个页面请求zend都会：

＃查询时间

（1）连接0.0032038688659668

（2）DESCRIBE session 0.0041539669036865

（3）SELECT session。* FROM session WHERE（（{session。session_id ='7nnan8ltd6h64sigs6dlkicvh0'和session。{{1} } =''AND save_path。session ='PHPSESSID'）））0.00057697296142578

总时间：0.008秒

当我对其他表进行查询时，zend DESCRIBEs一次（第一次访问该表），然后如果我刷新页面它只进行没有描述的查询，在会话表上它会在每个页面上进行DESCRIBE （因为我使用身份验证......）

如何在会话表中缓存仅元数据？

我目前正在使用此

name

这是我的配置文件

class Gestionale_Application_Resource_Cache extends Zend_Application_Resource_ResourceAbstract{
public function init ()
{
    $options = $this->getOptions();

    // Get a Zend_Cache_Core object

    //valori che vengono presi dal file di configurazione
    $cache = Zend_Cache::factory(
        $options['frontEnd'],
        $options['backEnd'],
        $options['frontEndOptions'],
        $options['backEndOptions']);
    Zend_Registry::set('cache', $cache);

    Zend_Db_Table_Abstract::setDefaultMetadataCache($cache);//per mettere in cache la meta-info
    return $cache;
}

这是我的会话表

...
;cache stuff
resources.cache.frontEnd = core 
resources.cache.backEnd = file 
resources.cache.frontEndOptions.lifetime = 1200 ; in secondi
resources.cache.frontEndOptions.automatic_serialization = true 
resources.cache.backEndOptions.lifetime = 3600 ; in secondi
resources.cache.backEndOptions.cache_dir = APPLICATION_PATH "/../cache"
pluginPaths.Gestionale_Application_Resource = APPLICATION_PATH "/../library/Gestionale/Application/Resource"  
;;fine cache stuff

resources.layout.layoutPath = APPLICATION_PATH "/layouts/scripts"
resources.db.params.charset = "utf8"
resources.db.adapter = "pdo_mysql"
resources.db.params.host = "localhost"
resources.db.params.username = "root"
resources.db.params.password = ""
resources.db.params.dbname = "gestionale"
resources.db.isDefaultTableAdapter = true
autoloaderNamespaces[] = "Gestionale_";serve per caricare il plugin di sotto quando si usa anche ZFdebug
resources.frontController.plugins.acl = "Gestionale_Controller_Plugin_Acl"
resources.db.params.profiler = true
...

谢谢：D

Answer 1

无论您在引导程序还是配置文件中初始化会话保存处理程序，请确保首先调用Zend_Db_Table_Abstract :: setDefaultMetadataCache（）。

要在配置文件中指定它，请将会话配置放在;;fine cache stuff行之后：

...
;cache stuff
resources.cache.frontEnd = core 
resources.cache.backEnd = file 
resources.cache.frontEndOptions.lifetime = 1200 ; in secondi
resources.cache.frontEndOptions.automatic_serialization = true 
resources.cache.backEndOptions.lifetime = 3600 ; in secondi
resources.cache.backEndOptions.cache_dir = APPLICATION_PATH "/../cache"
pluginPaths.Gestionale_Application_Resource = APPLICATION_PATH "/../library/Gestionale/Application/Resource"  
;;fine cache stuff

resources.session.saveHandler.class = "Zend_Session_SaveHandler_DbTable"
resources.session.saveHandler.options.name = "session"
resources.session.saveHandler.options.primary[] = "session_id"
resources.session.saveHandler.options.primary[] = "save_path"
resources.session.saveHandler.options.primary[] = "name"
resources.session.saveHandler.options.primaryAssignment[] = "sessionId"
resources.session.saveHandler.options.primaryAssignment[] = "sessionSavePath"
resources.session.saveHandler.options.primaryAssignment[] = "sessionName"
resources.session.saveHandler.options.modifiedColumn = "modified"
resources.session.saveHandler.options.dataColumn = "session_data"
resources.session.saveHandler.options.lifetimeColumn = "lifetime"

resources.layout.layoutPath = APPLICATION_PATH "/layouts/scripts"
resources.db.params.charset = "utf8"
...

或者，如果您不想依赖配置文件中的顺序，可以向引导类添加_initSession()方法，以正确的顺序加载它们：

protected function _initSession()
{
    $this->bootstrap('cache');
    $this->bootstrap('session');
}

Answer 2

您必须指定名为＆＃39; dbMetadataCache＆＃39;的缓存。它将缓存所有表的元数据。

以下是使用APC作为后端的示例

resources.cachemanager.dbMetadataCache.frontend.name = "Core"
resources.cachemanager.dbMetadataCache.frontend.options.automatic_serialization = 1
resources.cachemanager.dbMetadataCache.frontend.options.caching = 1
resources.cachemanager.dbMetadataCache.backend.name = "Apc"

resources.db.defaultMetadataCache = "dbMetadataCache"

Zend - 如何在会话表上启用缓存（MetaData）？

2 个答案: