public class test(){

    use EasyCacheTrait;
    
    public function __construct(){
        $this->default_expire = 1; //change default expire time (min)
    }
    
    public function DontWantToBeCache(){ // public function will not be cached
        //.....
    }

    protected function WantToBeCache(){ // protected function will be cached automatically
        static $expire = 60; //minute that this function want to be cached
    }
    
    private static function _getCacheKeyPrefixLevel1(){
        return "test:"; //overwrite cache prefix level 1, default is class name
    }
    
    private static function _getCacheKeyPrefixLevel2($method){
        return self::_getCacheKeyPrefixLevel1() . $method . ":"; //overwrite cache prefix level 2
    }
    
    private static function _getCacheKey($method, $params){
        return self::_getCacheKeyPrefixLevel2($method) . md5(json_encode($params)); //overwrite cache key
    }
}