redis SADD with golang

redis-sadd.go

func sadd(key string, val string) error {
	// get conn and put back when exit from method
	conn := pool.Get()
	defer conn.Close()

	_, err := conn.Do("SADD", key, val)
	if err != nil {
		log.Printf("ERROR: fail add val %s to set %s, error %s", val, key, err.Error())
		return err
	}

	return nil
}