public function set($key, $value, $duration = 0)
    {
        return $this->engine->set($this->_cachePrefix . $key, $value, $duration);
    }
public function set($key, $value, $duration = 0)
    {
        return $this->engine->set($this->_cachePrefix . $key, $value, $duration);
    }
public function set ( $ key , $ value , $ duration = 0 ) { return $ this -> engine -> set ( $ this -> _cachePrefix . $ key , $ value , $ duration ) ; }
Stores the value identified by the key into cache.
@param string $key the key identifying the value to be cached.
@param mixed $value the value to be cached
@param int $duration the number of seconds in which the cached value will expire. 0 means never expire.
@return bool
Stores the value identified by the key into cache .