Go 语言访问 Redis 笔记

Mac 下载 Redis

Mac安装Redis，原来就是这么简单

Mac Redix 数据库打开

• brew services start redis

服务端

• redis-server

客户端

• redis-cli

导包

package mainimport ("fmt""github.com/gomodule/redigo/redis"
)

连接数据库

func main() {c, err := redis.Dial("tcp", "localhost:6379")if err != nil {fmt.Println("conn redis failed,err:%v", err)return}defer c.Close()
}

操作字符串

// 获取字符串
func getString(c redis.Conn) {res, err := redis.String(c.Do("Get", "username"))if err != nil {fmt.Println(err)return}fmt.Println(res)
}// 设置字符串
func setString(c redis.Conn) {_, err := c.Do("Set", "username", "jack")if err != nil {fmt.Println(err)return}
}// 批量设置字符串
func setStrings(c redis.Conn) {_, err := c.Do("MSet", "username", "jack", "phone", "188888888")if err != nil {fmt.Println("MSet error:", err)return}
}// 批量获取字符串
func getStrings(c redis.Conn) {res2, err := redis.Strings(c.Do("MGet", "username", "phone"))if err != nil {fmt.Println("MGet error:", err)return}fmt.Println(res2)
}

操作 Hash

// redis Hash 操作 设置
func setHash(c redis.Conn) {_, err := c.Do("HSet", "names", "jim", "barry")if err != nil {fmt.Println("hset error: ", err)return}
}// redis Hash 操作 获取
func getHash(c redis.Conn) {res3, err := redis.String(c.Do("HGet", "names", "jim"))if err != nil {fmt.Println("hget error: ", err)return}fmt.Println(res3)
}

设置过期时间

// redis 设置过期时间
func setExpire(c redis.Conn) {_, err := c.Do("expire", "names", "10")if err != nil {fmt.Println("expire err: ", err)}
}

队列操作

// redis 队列
func queueOpr(c redis.Conn) {//入队列_, err := c.Do("lpush", "Queue", "jim", "barry", 9)if err != nil {fmt.Println("lpush error:", err)return}//出队列for true {r, err := redis.String(c.Do("lpop", "Queue"))if err != nil {fmt.Println("lpop error: ", err)return}fmt.Println(r)}//获取队列长度res4, err := redis.Int(c.Do("llen", "Queue"))if err != nil {fmt.Println("llen error: ", err)return}fmt.Println(res4)
}

连接池

// 使用 Pool 初始化连接池
var pool *redis.Poolfunc init() {pool = &redis.Pool{MaxActive:   1024,MaxIdle:     16,IdleTimeout: 300,Dial: func() (redis.Conn, error) {return redis.Dial("tcp", "localhost:6379")},}
}func main() {c := pool.Get()defer c.Close()_, err := c.Do("Set", "username", "jack")if err != nil {fmt.Println(err)return}r, err := redis.String(c.Do("Get", "username"))if err != nil {fmt.Println(err)return}fmt.Println(r)
}

并发操作

//redis并发实例
func main() {conn, err := redis.Dial("tcp", "localhost:6379")if err != nil {fmt.Println("connect redis error:", err)return}defer conn.Close()conn.Send("HSET", "students", "name", "jim", "age", "19")conn.Send("HSET", "students", "score", "100")conn.Send("HSET", "students", "age")conn.Flush()res1, err := conn.Receive()fmt.Printf("Receive res1:%v \n", res1)res2, err := conn.Receive()fmt.Printf("Receive res2:%v \n", res2)res3, err := conn.Receive()fmt.Printf("Receive res3:%v \n", res3)
}

管道化操作

//redis管道化操作
func main() {c, err := redis.Dial("tcp", "localhost:6379")if err != nil {fmt.Println("conn redis failed,err:", err)return}defer c.Close()c.Send("SET", "username1", "jim")c.Send("SET", "username2", "jack")c.Flush()v, err := c.Receive()fmt.Printf("v:%v,err:%v\n", v, err)v, err = c.Receive()fmt.Printf("v:%v,err:%v\n", v, err)v, err = c.Receive()fmt.Printf("v:%v,err:%v\n", v, err)
}

事务操作

// redis事务操作
func main() {conn, err := redis.Dial("tcp", "localhost:6379")if err != nil {fmt.Println("connect redis error:", err)return}defer conn.Close()conn.Send("MULTI")conn.Send("INCR", "Foo")conn.Send("INCR", "bar")r, err := conn.Do("EXEC")fmt.Println(r)
}

• 有几个 redis 库，但一般用 “github.com/go-redis/redis/v8” --wilinzz