Go-操作redis
安装
golang操作redis的客户端包有多个比如redigo、go-redis，github上Star最多的莫属redigo。
github地址：https://github.com/garyburd/redigo 目前已经迁移到：https://github.com/gomodule/redigo
文档：https://godoc.org/github.com/garyburd/redigo/redis
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go get github.com/garyburd/redigo/redisimport "github.com/garyburd/redigo/redis" |
连接
Conn接口是与Redis协作的主要接口，可以使用Dial,DialWithTimeout或者NewConn函数来创建连接，当任务完成时，应用程序必须调用Close函数来完成操作。
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package mainimport ("github.com/garyburd/redigo/redis""fmt")func main() { conn,err := redis.Dial("tcp","10.1.210.69:6379") if err != nil { fmt.Println("connect redis error :",err) return } defer conn.Close()} |
使用
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package mainimport ("github.com/garyburd/redigo/redis""fmt")func main() { conn,err := redis.Dial("tcp","10.1.210.69:6379") if err != nil { fmt.Println("connect redis error :",err) return } defer conn.Close() _, err = conn.Do("SET", "name", "wd") if err != nil { fmt.Println("redis set error:", err) } name, err := redis.String(conn.Do("GET", "name")) if err != nil { fmt.Println("redis get error:", err) } else { fmt.Printf("Got name: %s \n", name) }} |
设置key过期时间
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_, err = conn.Do("expire", "name", 10) //10秒过期 if err != nil { fmt.Println("set expire error: ", err) return } |
批量获取mget、批量设置mset
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_, err = conn.Do("MSET", "name", "wd","age",22) if err != nil { fmt.Println("redis mset error:", err) } res, err := redis.Strings(conn.Do("MGET", "name","age")) if err != nil { fmt.Println("redis get error:", err) } else { res_type := reflect.TypeOf(res) fmt.Printf("res type : %s \n", res_type) fmt.Printf("MGET name: %s \n", res) fmt.Println(len(res)) }//结果：//res type : []string //MGET name: [wd 22] //2 |
列表操作
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package mainimport ("github.com/garyburd/redigo/redis""fmt" "reflect")func main() { conn,err := redis.Dial("tcp","10.1.210.69:6379") if err != nil { fmt.Println("connect redis error :",err) return } defer conn.Close() _, err = conn.Do("LPUSH", "list1", "ele1","ele2","ele3") if err != nil { fmt.Println("redis mset error:", err) } res, err := redis.String(conn.Do("LPOP", "list1")) if err != nil { fmt.Println("redis POP error:", err) } else { res_type := reflect.TypeOf(res) fmt.Printf("res type : %s \n", res_type) fmt.Printf("res : %s \n", res) }}//res type : string //res : ele3 |
hash操作
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package mainimport ("github.com/garyburd/redigo/redis""fmt" "reflect")func main() { conn,err := redis.Dial("tcp","10.1.210.69:6379") if err != nil { fmt.Println("connect redis error :",err) return } defer conn.Close() _, err = conn.Do("HSET", "student","name", "wd","age",22) if err != nil { fmt.Println("redis mset error:", err) } res, err := redis.Int64(conn.Do("HGET", "student","age")) if err != nil { fmt.Println("redis HGET error:", err) } else { res_type := reflect.TypeOf(res) fmt.Printf("res type : %s \n", res_type) fmt.Printf("res : %d \n", res) }}//res type : int64 //res : 22 |
Pipelining(管道)
管道操作可以理解为并发操作，并通过Send()，Flush()，Receive()三个方法实现。客户端可以使用send()方法一次性向服务器发送一个或多个命令，命令发送完毕时，使用flush()方法将缓冲区的命令输入一次性发送到服务器，客户端再使用Receive()方法依次按照先进先出的顺序读取所有命令操作结果。
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Send(commandName string, args ...interface{}) errorFlush() errorReceive() (reply interface{}, err error) |
- Send：发送命令至缓冲区
- Flush：清空缓冲区，将命令一次性发送至服务器
- Recevie：依次读取服务器响应结果，当读取的命令未响应时，该操作会阻塞。
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package mainimport ("github.com/garyburd/redigo/redis""fmt")func main() { conn,err := redis.Dial("tcp","10.1.210.69:6379") if err != nil { fmt.Println("connect redis error :",err) return } defer conn.Close() conn.Send("HSET", "student","name", "wd","age","22") conn.Send("HSET", "student","Score","100") conn.Send("HGET", "student","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:%s\n",res3)}//Receive res1:0 //Receive res2:0//Receive res3:22 |
redis发布会订阅模式
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package mainimport ( "github.com/garyburd/redigo/redis" "fmt" "time")func Subs() { //订阅者 conn, err := redis.Dial("tcp", "10.1.210.69:6379") if err != nil { fmt.Println("connect redis error :", err) return } defer conn.Close() psc := redis.PubSubConn{conn} psc.Subscribe("channel1") //订阅channel1频道 for { switch v := psc.Receive().(type) { case redis.Message: fmt.Printf("%s: message: %s\n", v.Channel, v.Data) case redis.Subscription: fmt.Printf("%s: %s %d\n", v.Channel, v.Kind, v.Count) case error: fmt.Println(v) return } }}func Push(message string) { //发布者 conn, _ := redis.Dial("tcp", "10.1.210.69:6379") _,err1 := conn.Do("PUBLISH", "channel1", message) if err1 != nil { fmt.Println("pub err: ", err1) return }}func main() { go Subs() go Push("this is wd") time.Sleep(time.Second*3)}//channel1: subscribe 1//channel1: message: this is wd |
事务操作
MULTI, EXEC,DISCARD和WATCH是构成Redis事务的基础，当然我们使用go语言对redis进行事务操作的时候本质也是使用这些命令。
MULTI：开启事务
EXEC：执行事务
DISCARD：取消事务
WATCH：监视事务中的键变化，一旦有改变则取消事务。
示例：
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package mainimport ("github.com/garyburd/redigo/redis""fmt")func main() { conn,err := redis.Dial("tcp","10.1.210.69:6379") 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)}//[1, 1] |
万能操作
连接redis
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conn,err := redis.Dial( "tcp", "10.0.3.100:6379", redis.DialPassword("EfcHGSzKqg6cfzWq"), redis.DialDatabase(8))if err != nil { fmt.Println("connect redis error :",err) return}defer conn.Close() |
写入
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//写入//_, err = conn.Do("LPUSH", "list1", "ele1","ele2","ele3")_, err = conn.Do("reids写入方法", "key名字", "内容1","内容2","内容3")if err != nil { fmt.Println("redis set error:", err)} |
读取
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//读取redis.Strings：返回多个redis.String：返回一个redis.int:返回统计的数字//获取集合所有成员//name, err := redis.Strings(conn.Do("smembers", "beautiful_user"))// 返回集合成员数//name, err := redis.Int(conn.Do("scard", "beautiful_user"))name, err := redis.方法名(conn.Do("redis读取方法", "key名字"))if err != nil { fmt.Println("redis get error:", err)} else { fmt.Printf("Got name: %s \n", name)} |
全部代码
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package mainimport ( "fmt" "github.com/garyburd/redigo/redis")func main() { conn,err := redis.Dial("tcp","10.0.3.100:6379",redis.DialPassword("EfcHGSzKqg6cfzWq"),redis.DialDatabase(8)) if err != nil { fmt.Println("connect redis error :",err) return } defer conn.Close() //写入 _, err = conn.Do("LPUSH", "list1", "ele1","ele2","ele3") if err != nil { fmt.Println("redis set error:", err) } //读取 name, err := redis.Strings(conn.Do("smembers", "beautiful_user")) if err != nil { fmt.Println("redis get error:", err) } else { fmt.Printf("Got name: %s \n", name) }} |
以上就是Go操作redis与redigo的示例解析的详细内容，更多关于Go操作redis与redigo的资料请关注服务器之家其它相关文章！
原文链接：https://www.cnblogs.com/guyouyin123/p/14098324.html
