Redigo connection pool with AUTH and PING

redigo_pool.go

// How to use:
//
//   var rpool = newPool() // can be global
//   c := rpool.Get()
//   defer c.Close()
//   c.Do("GET", "my:data")

func newPool() *redis.Pool {
	return &redis.Pool{
		MaxIdle:     10,   // number of idle connections to keep for reusing
		MaxActive:   1000, // maximum amount of active connections
		IdleTimeout: 600 * time.Second, // amount of time to close idle connections
		Dial: func() (redis.Conn, error) {
			c, err := redis.Dial("tcp", os.Getenv("REDIS_ADDR")) // connect
			if err != nil {
				log.Println(err) // might be redundant
				return nil, err
			}
			_, err = c.Do("AUTH", os.Getenv("REDIS_PASS")) // authentication
			if err != nil {
				log.Println(err) // might be redundant
				return nil, err
			}
			return c, nil
		},

		TestOnBorrow: func(c redis.Conn, t time.Time) error {
      _, err := c.Do("PING") // ping. will be executed everytime a new connection is created ("test on borrow")
			return err
		},
	}
}