Cache::config(‘long’, array(
    ‘engine’ => ‘File’,
    ‘duration’ => ‘+1 hours’,
    ‘probability’ => 100,
    ‘path’ => CACHE . ‘long’ . DS,
));


cache file will be written in apptmpcachelong

In controller (ArticlesController)

public function latest_news ($limit=NULL) {
    $data = Cache::read(‘latest_news’, ‘long’);
        if (!$data) {
        $data = array(‘fields’=>array(‘id’,’title’),
        ‘conditions’=>array(‘Article.published’=>1),          
        ‘order’=>’Article.created DESC’,
        ‘limit’=>$limit)    ;
           
            Cache::write(‘latest_news’, $data, ‘long’);
        }

        return $this->Article->find(‘all’, $data);
}


cache file will be named in apptmpcachelonglatest_news




In element
$latest_news = $this->requestAction(‘/Articles/latest_news/10’);