protected function shouldBypassCache($token, $secret)
    {
        $newHash = sha1($token.'_'.$secret);

        if (! empty($this->userHash) && $newHash !== $this->userHash) {
            $this->userHash = $newHash;

            return true;
        }

        $this->userHash = $this->userHash ?: $newHash;

        return false;
    }