非零基础快速入门 Go 语言_Go-Redis

绝地灬酷狼 2023-01-13 10:12 194阅读 0赞

# 非零基础快速入门 Go 语言\_Go-Redis #

> 本文针对五大数据结构基本操作 快速上手 go-redis

### 文章目录 ###

*  非零基础快速入门 Go 语言\_Go-Redis
 *   *   *  String
         *  List
         *  Hash
         *  Set
         *  SortSet

//连接服务器
    redisdb = redis.NewClient(&redis.Options{
        
        Addr:     "localhost:6379", // use default Addr
        Password: "",               // no password set
        DB:       0,                // use default DB
    })

### String ###

//设置并添加过期时间
    err := redisdb.Set("key", "value", 1*time.Second).Err()
    
    //获取过期时间
    tm, err := redisdb.TTL("key").Result()
    
    //获取结果
    val, err := redisdb.Get("key").Result()
    
    //获取结果并判断是否存在
    val2, err := redisdb.Get("missing_key").Result()
    if err == redis.Nil {
        
        log.Println("missing_key does not exist")
    } else if err != nil {
        
        log.Println("missing_key", val2, err)
    }
    //不存在才设置 过期时间 nx ex
    value, err := redisdb.SetNX("counter", 0, 1*time.Second).Result()
    
    //自增Incr
    result, err := redisdb.Incr("counter").Result()

### List ###

//添加
    redisdb.RPush("list_test", "message1").Err()
    redisdb.RPush("list_test", "message2").Err()
    
    //设置
    log.Println(redisdb.LSet("list_test", 2, "message set").Err())
    
    //remove
    ret, err := redisdb.LRem("list_test", 3, "message1").Result()
    
    //list长度
    rLen, err := redisdb.LLen("list_test").Result()
    
    //范围遍历
    lists, err := redisdb.LRange("list_test", 0, rLen-1).Result()
    log.Println("LRange", lists, err)
    
    //pop没有时阻塞
    result, err := redisdb.BLPop(1*time.Second, "list_test").Result()

### Hash ###

datas := map[string]interface{
        }{
        
        "name": "LI LEI",
        "sex":  1,
        "age":  28,
        "tel":  123445578,
    }
    
    //批量添加
    if err := redisdb.HMSet("hash_test", datas).Err(); err != nil {
        
        log.Fatal(err)
    }
    
    //获取
    rets, err := redisdb.HMGet("hash_test", "name", "sex").Result()
    
    //获取成员完整字段
    retAll, err := redisdb.HGetAll("hash_test").Result()
    
    //是否存在
    bExist, err := redisdb.HExists("hash_test", "tel").Result()
    
    //设置
    bRet, err := redisdb.HSetNX("hash_test", "id", 100).Result()
    
    //删除
    redisdb.HDel("hash_test", "age").Result())

### Set ###

//添加
    ret, err := redisdb.SAdd("set_test", "11", "22", "33", "44").Result()
    
    //数量
    count, err := redisdb.SCard("set_test").Result()
    
    //删除
    ret, err = redisdb.SRem("set_test", "11", "22").Result()
    
    //成员
    members, err := redisdb.SMembers("set_test").Result()
    
    //是否成员
    bret, err := redisdb.SIsMember("set_test", "33").Result()
    
    //差集
    diff, err := redisdb.SDiff("set_a", "set_b").Result()
    
    //交集
    inter, err := redisdb.SInter("set_a", "set_b").Result()
    
    //并集
    union, err := redisdb.SUnion("set_a", "set_b").Result()

### SortSet ###

addArgs := make([]redis.Z, 100)
    for i := 1; i < 100; i++ {
        
        addArgs = append(addArgs, redis.Z{
        Score: float64(i), Member: fmt.Sprintf("a_%d", i)})
    }
    //log.Println(addArgs)
    
    Shuffle := func(slice []redis.Z) {
        
        r := rand.New(rand.NewSource(time.Now().Unix()))
        for len(slice) > 0 {
        
            n := len(slice)
            randIndex := r.Intn(n)
            slice[n-1], slice[randIndex] = slice[randIndex], slice[n-1]
            slice = slice[:n-1]
        }
    }
    
    //随机打乱
    Shuffle(addArgs)
    
    //添加
    ret, err := redisdb.ZAddNX("sortset_test", addArgs...).Result()
    log.Println(ret, err)
    
    //获取指定成员score
    score, err := redisdb.ZScore("sortset_test", "a_10").Result()
    log.Println(score, err)
    
    //获取制定成员的排序索引
    index, err := redisdb.ZRank("sortset_test", "a_50").Result()
    log.Println(index, err)
    
    //数量
    count, err := redisdb.SCard("sortset_test").Result()
    
    //返回有序集合指定区间内的成员
    rets, err := redisdb.ZRange("sortset_test", 10, 20).Result()
    
    //返回有序集合指定区间内的成员分数从高到低
    rets, err = redisdb.ZRevRange("sortset_test", 10, 20).Result()
    
    //指定分数区间的成员列表
    rets, err = redisdb.ZRangeByScore("sortset_test", redis.ZRangeBy{
        Min: "(30", Max: "(50", Offset: 1, Count: 10}).Result()