How to reset the cache in yii 1.1.16?

Question

Yii

Good afternoon!
How to reset the cache in yii by the passed key?
Yii::app()->cache->delete($key) - doesn't
flush But Yii::app()->cache->flush() flushes. But all at once.
I want to make it possible to reset only a certain cache.
I use beginCache(). I pass there the key id, duration and depency with the CDbCacheDependency class.
In a config I use CFileCache
Thanks in advance.

Answer 1

Colleagues, in short, for COutputCache it worked.
And if there is a problem, then you can stupidly, on the page where the cache is used, display:

echo '<pre>';
print_r($this->beginWidget( 'COutputCache',array( 'id'=>$id, 'duration'=>$duration, 'dependency' => $dependency) ));
echo '</pre>';

And there to see the key

Answer 2

Yii::app()->cache->delete(COutputCache::CACHE_KEY_PREFIX . $key);