redis使用说明

• 启动服务端

安装成功后，通过终端键入如下命令：

redis-server.exe redis.windows.conf

一切没问题会出现下面的提示: [11368] 13 Jul 10:10:31.487 # Creating Server TCP listening socket 127.0.0.1:6379: bind: No error

• 启动客户端

新打开一个终端，启动redis客户端，键入命令：

redis-cli.exe -h 127.0.0.1 -p 6379

• 测试

127.0.0.1:6379> set mykey abc
OK
127.0.0.1:6379> get mykey
"abc"

• 开源库redigo的使用

• 连接Redis

package main
import (
    "fmt"
    "github.com/garyburd/redigo/redis"
)

func main() {
    c, err := redis.Dial("tcp", "127.0.0.1:6379")
    if err != nil {
        fmt.Println("Connect to redis error", err)
        return
    }
    defer c.Close()
}

• 初始化连接池

import (
  "github.com/garyburd/redigo/redis"
  "github.com/go-xorm/core"
  "github.com/go-xorm/xorm"
  "github.com/golang/glog"
  _ "github.com/lib/pq"
)

var RedisClient *redis.Pool

func InitRedis(Host string,Port int,Passwd string,Index int,IdleTimeout int,MaxIdleCount int,MaxOpenCount int) {
   RedisClient = &redis.Pool{
        MaxIdle:     MaxIdleCount,
        MaxActive:   MaxOpenCount,
        IdleTimeout: time.Duration(IdleTimeout) * time.Second,
        Dial: func() (redis.Conn, error) {
            c, err := redis.Dial("tcp", fmt.Sprintf("%s:%d", Host, Port))
            if err != nil {
                return nil, err
            }
            /*fmt.Printf("Host：%s,Port:%s, Passwd:%s,Index:%s\n",Host,Port,Passwd,Index)
            if _, err := c.Do("AUTH", Passwd); err != nil {
                c.Close()
                return nil, err
            }*/
            if _, err := c.Do("SELECT", Index); err != nil {
                c.Close()
                return nil, err
            }
            return c, err
        },
        TestOnBorrow: func(c redis.Conn, t time.Time) error {
            _, err := c.Do("PING")
            return err
        },
    }
}

• 读写

package main

import (
    "fmt"

    "github.com/garyburd/redigo/redis"
)

func main() {
    c, err := redis.Dial("tcp", "127.0.0.1:6379")
    if err != nil {
        fmt.Println("Connect to redis error", err)
        return
    }
    defer c.Close()

    _, err = c.Do("SET", "mykey", "superWang")
    if err != nil {
        fmt.Println("redis set failed:", err)
    }

    username, err := redis.String(c.Do("GET", "mykey"))
    if err != nil {
        fmt.Println("redis get failed:", err)
    } else {
        fmt.Printf("Get mykey: %v \n", username)
    }
}

• 设置过期

package main

import (
    "fmt"
    "time"

    "github.com/garyburd/redigo/redis"
)

func main() {
    c, err := redis.Dial("tcp", "127.0.0.1:6379")
    if err != nil {
        fmt.Println("Connect to redis error", err)
        return
    }
    defer c.Close()

    _, err = c.Do("SET", "mykey", "superWang", "EX", "5")
    if err != nil {
        fmt.Println("redis set failed:", err)
    }

    username, err := redis.String(c.Do("GET", "mykey"))
    if err != nil {
        fmt.Println("redis get failed:", err)
    } else {
        fmt.Printf("Get mykey: %v \n", username)
    }

    time.Sleep(8 * time.Second)

    username, err = redis.String(c.Do("GET", "mykey"))
    if err != nil {
        fmt.Println("redis get failed:", err)
    } else {
        fmt.Printf("Get mykey: %v \n", username)
    }
}

• 检测值是否存在

package main

import (
    "fmt"

    "github.com/garyburd/redigo/redis"
)

func main() {
    c, err := redis.Dial("tcp", "127.0.0.1:6379")
    if err != nil {
        fmt.Println("Connect to redis error", err)
        return
    }
    defer c.Close()

    _, err = c.Do("SET", "mykey", "superWang")
    if err != nil {
        fmt.Println("redis set failed:", err)
    }

    is_key_exit, err := redis.Bool(c.Do("EXISTS", "mykey1"))
    if err != nil {
        fmt.Println("error:", err)
    } else {
        fmt.Printf("exists or not: %v \n", is_key_exit)
    }

}

• 删除

package main

import (
    "fmt"

    "github.com/garyburd/redigo/redis"
)

func main() {
    c, err := redis.Dial("tcp", "127.0.0.1:6379")
    if err != nil {
        fmt.Println("Connect to redis error", err)
        return
    }
    defer c.Close()

    _, err = c.Do("SET", "mykey", "superWang")
    if err != nil {
        fmt.Println("redis set failed:", err)
    }

    username, err := redis.String(c.Do("GET", "mykey"))
    if err != nil {
        fmt.Println("redis get failed:", err)
    } else {
        fmt.Printf("Get mykey: %v \n", username)
    }

    _, err = c.Do("DEL", "mykey")
    if err != nil {
        fmt.Println("redis delelte failed:", err)
    }

    username, err = redis.String(c.Do("GET", "mykey"))
    if err != nil {
        fmt.Println("redis get failed:", err)
    } else {
        fmt.Printf("Get mykey: %v \n", username)
    }
}

• 读写Json到Redis

package main

import (
    "encoding/json"
    "fmt"

    "github.com/garyburd/redigo/redis"
)

func main() {
    c, err := redis.Dial("tcp", "127.0.0.1:6379")
    if err != nil {
        fmt.Println("Connect to redis error", err)
        return
    }
    defer c.Close()

    key := "profile"
    imap := map[string]string{"username": "666", "phonenumber": "888"}
    value, _ := json.Marshal(imap)

    n, err := c.Do("SETNX", key, value)
    if err != nil {
        fmt.Println(err)
    }
    if n == int64(1) {
        fmt.Println("success")
    }

    var imapGet map[string]string

    valueGet, err := redis.Bytes(c.Do("GET", key))
    if err != nil {
        fmt.Println(err)
    }

    errShal := json.Unmarshal(valueGet, &imapGet)
    if errShal != nil {
        fmt.Println(err)
    }
    fmt.Println(imapGet["username"])
    fmt.Println(imapGet["phonenumber"])
}

• 列表操作

package main

import (
    "fmt"

    "github.com/garyburd/redigo/redis"
)

func main() {
    c, err := redis.Dial("tcp", "127.0.0.1:6379")
    if err != nil {
        fmt.Println("Connect to redis error", err)
        return
    }
    defer c.Close()

    _, err = c.Do("lpush", "runoobkey", "redis")
    if err != nil {
        fmt.Println("redis set failed:", err)
    }

    _, err = c.Do("lpush", "runoobkey", "mongodb")
    if err != nil {
        fmt.Println("redis set failed:", err)
    }
    _, err = c.Do("lpush", "runoobkey", "mysql")
    if err != nil {
        fmt.Println("redis set failed:", err)
    }

    values, _ := redis.Values(c.Do("lrange", "runoobkey", "0", "100"))

    for _, v := range values {
        fmt.Println(string(v.([]byte)))
    }
}

• 管道

c.Send("SET", "foo", "bar")
c.Send("GET", "foo")
c.Flush()
c.Receive() // reply from SET
v, err = c.Receive() // reply from GET

• 应用

package main

import (
    "fmt"

    "github.com/go-redis/redis"
)

func main() {
    client := redis.NewClient(&redis.Options{
        Addr:     "127.0.0.1:6379",
        Password: "", // no password set
        DB:       0,  // use default DB
    })

    pong, err := client.Ping().Result()
    fmt.Println(pong, err)

    err = client.Set("key", "value", 0).Err()
    if err != nil {
        panic(err)
    }

    val, err := client.Get("key").Result()
    if err != nil {
        panic(err)
    }
    fmt.Println("key", val)

    val2, err := client.Get("key2").Result()
    if err == redis.Nil {
        fmt.Println("key2 does not exists")
    } else if err != nil {
        panic(err)
    } else {
        fmt.Println("key2", val2)
    }
}

github地址： https://github.com/go-redis/redis

文档地址： https://godoc.org/github.com/go-redis/redis

获取：

go get -u github.com/go-redis/redis