public function set($key, \DateTime $time)
    {
        if ($this->fast->set($key, $time)) {
            return $this->slow->set($key, $time);
        }

        return false;
    }
public function set($key, \DateTime $time)
    {
        if ($this->fast->set($key, $time)) {
            return $this->slow->set($key, $time);
        }

        return false;
    }
@param string $key
@param \DateTime $time

@return bool