code: func (status Status) JobIds() ([]string, error) {
  	conn := redisPool.Get()
  	defer conn.Close()
  	return redis.Strings(conn.Do("ZREVRANGE", status.Key(), 0, -1))
  }
docs: // JobIds returns the ids of all jobs that have the given status, ordered by
  // priority or an error if there was a problem connecting to the database.