Yii Caching example

In order to use caching in yii framework you need define in main.php file and choose type of caching. Here are some examples.

Normal data caching

1. // data cache
2. public function actionCache()
3. {
4.     $cache = Yii::app()->cache;
5.     //get cache
6.     $time = $cache->get('cache_key');
7.     //if cache is gone.
8.     if (false === $time){  
9.       //set cache
10.       $cache->set('cache_key',time(),30);
11.       $time = $cache->get('cache_key');
12.     }
13.     echo $time;
14. }

Fregment data caching

1. // fregment data cache
2. public function actionCache()
3. {
4.   if ($this->beginCache('cache_key',
5.   array('duration'=>60,
6.         'dependency'=>array(
7.       'class'=>'system.caching.dependencies.CDbCacheDependency',//you must have db set here
8.       'sql'=>'SELECT COUNT(*) FROM  `user`',//you must have db set here
9.   ),
10.   'varyByParam'=>array('id'),//cache by $_GET['id']
11.   ))){
12.       echo 'cache_key'.time();
13.       echo @$_GET['id'];
14.       echo ' <hr /> ';
15.       $this->endCache();
16.   }
17. }

Page Cache

1. public function filters()
2. {
3.     return array(
4.         array('COutputCache + PageCache', 'duration'=>30,'varyByParam'=>array('id')),
5.     );
6. }
7. public function actionCache()
8. {
9.     $this->render('pageCache');
10. }

It's easy to use, just to be a bit change. More about yii caching visit this: http://www.yiiframework.com/doc/guide/1.1/en/caching.overview