golang使用redis

golang使用redis-go操作redis

　　此处记录redis-go包连接redis，操作常用str、hash类型的数据。

package main

import (
    "context"
    "fmt"

    "github.com/go-redis/redis/v8"
)

var rdb *redis.Client
var ctx context.Context = context.Background()

func initClient() (err error) {
    rdb = redis.NewClient(&redis.Options{
        Addr:     "172.21.0.12:6379",
        Password: "xxxxxxx",
        DB:       15,
        PoolSize: 20,
    })
    _, err = rdb.Ping(ctx).Result()
    if err != nil {
        return err
    }
    return nil
}

//str key  存取
func strRedis() {
    rdb.Set(ctx, "name", "wushaoyu", 0)
    fmt.Printf("key:%v 设置成功", "name")

    val, err := rdb.Get(ctx, "age").Result()
    if err != nil {
        fmt.Printf("key:%v get  err:%v", "age", err)
    }
    fmt.Printf("val: %v\n", val)
}

//Hash key  存取
func hashRedis() {
    s, err := rdb.HGet(ctx, "user", "firstname").Result() //返回值,报错信息
    // s := rdb.HGet(ctx, "user", "firstname").Val() //返回值, 返回单个key的值
    if err != nil {
        fmt.Printf("err: %v\n", err)
    }
    fmt.Printf("s: %v\n", s)
    fmt.Println("========================")
    m, _ := rdb.HGetAll(ctx, "user").Result() //map[firstname:wu lastname:shao]
    fmt.Printf("%+v\n", m)
    // fmt.Printf("m[\"firstname\"]: %v\n", m["firstname"])
    // fmt.Printf("m[\"lastname\"]: %v\n", m["lastname"])
}

func main() {
    if err := initClient(); err != nil {
        fmt.Printf("init redis client failed,err:%v\n", err)
        return
    }
    fmt.Println("connect redis success....")

// strRedis()
    // hashRedis()

}