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浅析Yii2缓存的使用_php实例

Jun 07, 2016 pm 05:07 PM

一个好的框架是肯定离不开缓存的使用,相反,一个没有缓存的框架也肯定不是一个好框架,好像是一个意思,不管了,我们先来看看yii2中是如何使用缓存的吧。

又是到我们第一步操作的时候了,我们先来配置组件。

方便起见,我们的缓存组件配置在common\config\main.php文件,先来简单配置下文件缓存

'components' => [ 
'cache' => [ 
'class' => 'yii\caching\FileCache', 
'cachePath' => '@runtime/cache2', 
], 
],
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所谓的文件缓存,其实就是把我们要缓存的数据存放到文件内,那数据又缓存到哪里了呢?

//默认的缓存路径是@app\runtime\cache目录下,如果你想要修改缓存路径,可以像上面配置一样,配置下cachePath即可

我们直接来操作看看

$cache = Yii::$app->cache; 
$data = $cache->get('cache_data_key'); 
if ($data === false) { 
//这里我们可以操作数据库获取数据,然后通过$cache->set方法进行缓存 
$cacheData = ...... 
//set方法的第一个参数是我们的数据对应的key值,方便我们获取到 
//第二个参数即是我们要缓存的数据 
//第三个参数是缓存时间,如果是0,意味着永久缓存。默认是0 
$cache->set('cache_data_key', $cacheData, 60*60); 
} 
var_dump($data);
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以上内容是小编给大家介绍的Yii2缓存的使用方法,大家可以参考下。

下面给大家介绍Yii设置Cache缓存的方法

先在配置文件components数组中加上:

复制代码 代码如下:

'cache'=>array( 'class'=>'CFileCache'),

设置Cache:

Yii::app()->cache->set('testcache', array(1,3,4,6));//默认有效期为一年
Yii::app()->cache->set('testcache', array(1,3,4,6), 3600);//一个钟,秒为单位
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获取Cache:

$data = Yii::app()->cache->get('testcache');
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删除单个Cache:

Yii::app()->cache->delete('testcache');
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清空全部Cache:

Yii::app()->cache->flush();
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