code: function saveUserInRedis(user, tokenOrEmail, config) {
    if (config.redisClient) {
      const key = `${ns}:${tokenOrEmail}`;
      config.redisClient.set(key, JSON.stringify(user.data_), 'EX', 10);
    }
  }
docs: Save user in Redis Client
  @param  {!Auth} user
  @param  {!String} tokenOrEmail
  @param  {!Object} config