我正在使用 Zend_Session_SaveHandler_DbTable 将 session 存储在表中
我的分析器告诉我,在每个页面请求 zend 都会执行以下操作:
# 查询时间
(1) 连接 0.0032038688659668
(2) 描述 session
0.0041539669036865
(3) SELECT session
.* FROM session
WHERE (((session
.session_id
= '7nnan8ltd6h64sigs6dlkicvh0 ' AND session
.save_path
= '' AND session
.name
= 'PHPSESSID'))) 0.00057697296142578
总时间:0.008秒
当我对其他表进行查询时,zend DESCRIBE 一次(第一次访问该表时),然后如果我刷新页面,它只会执行没有描述的查询,在 session 表上,它会在每个页面上 DESCRIBE (因为我使用身份验证...)
如何在 session 表上仅缓存元数据?
我目前正在使用这个
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;
}
这是我的配置文件
...
;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
...
这是我的 session 表
CREATE TABLE IF NOT EXISTS `session` (
`session_id` char(32) NOT NULL,
`save_path` varchar(32) NOT NULL,
`name` varchar(32) NOT NULL DEFAULT '',
`modified` int(11) DEFAULT NULL,
`lifetime` int(11) DEFAULT NULL,
`session_data` text,
PRIMARY KEY (`session_id`,`save_path`,`name`)
) ENGINE=MyISAM DEFAULT CHARSET=utf8;
谢谢:D
最佳答案
无论您在 Bootstrap 还是配置文件中初始化 session 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 session 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,如果您不想依赖它们在配置文件中的顺序,您可以向引导类添加一个 _initSession()
方法,专门以正确的顺序加载它们:
protected function _initSession()
{
$this->bootstrap('cache');
$this->bootstrap('session');
}
关于php - Zend - 如何在 session 表上启用缓存(元数据)?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/5271018/