framework/caching/CCache.php
public function init()
	{
		parent::init();
		if($this->keyPrefix===null)
			$this->keyPrefix=Yii::app()->getId();
	}
public function init()
	{
		parent::init();
		if($this->keyPrefix===null)
			$this->keyPrefix=Yii::app()->getId();
	}
public function init ( ) { parent :: init ( ) ; if ( $ this -> keyPrefix === null ) $ this -> keyPrefix = Yii :: app ( ) -> getId ( ) ; }
Initializes the application component.
This method overrides the parent implementation by setting default cache key prefix.
Initializes the application component . This method overrides the parent implementation by setting default cache key prefix .