Redis 常用的五种数据类型-优快云博客

本文链接：https://blog.youkuaiyun.com/SUMMERENT/article/details/121206024

1、String 字符串

    /* 1、字符串
     * description :redis存取字符串或object
     */

    @GetMapping("/string")
    public String stringType(){
        //存，存string 或 object 类型数据时使用opsForValue()
        redisTemplate.opsForValue().set("string","hello word!");

        return (String)redisTemplate.opsForValue().get("string");
    }

2、list 列表

    /** 2、list列表
     * description :redis存取列表数据
     */
    @GetMapping("/list")
    public List listType(){
        ListOperations listOperations = redisTemplate.opsForList();
        //存
        listOperations.leftPush("list","hello word");
        listOperations.leftPush("list","你好 redis");
        listOperations.leftPush("list","JAVA! ");
        listOperations.leftPush("list1","JAVA222 ");
        listOperations.leftPush("list2","JAVA333");
        //取 根据key ，起始下标，结束下标
        List<String> list = listOperations.range("list",0,2);
        List<String> list1 = listOperations.range("list1",0,1);
        List<String> list2 = listOperations.range("list2",0,0);
        return list2;
    }

3、Set 集合：自动去重、无序

    /** 3、set集合
     * description :redis存取集合数据,自动去重，无序
     */
    @GetMapping("/set")
    public Set<String> setType(){
        SetOperations setOperations = redisTemplate.opsForSet();
        //set会自动去重复数据
        setOperations.add("set","hello");
        setOperations.add("set","hello");
        setOperations.add("set","word");
        setOperations.add("set","word");
        setOperations.add("set","java");
        setOperations.add("set","c++");
        setOperations.add("set","java");
        Set set = setOperations.members("set");
        return set;
    }

4、ZSet 有序集合：自动去重、有序

    /** 4、有序集合
     * description :redis存取有序集合数据,自动去重，有序
     */
    @GetMapping("/zset")
    public Set<String> zsetType(){
        ZSetOperations zSetOperations = redisTemplate.opsForZSet();
        zSetOperations.add("zset","hello",1);
        zSetOperations.add("zset","hello",2);
        zSetOperations.add("zset","word",3);
        zSetOperations.add("zset","word",4);
        zSetOperations.add("zset","java",5);
        //key起始，到结束
        Set set = zSetOperations.range("zset", 0, 5);
        return set;
    }

5、Hash 哈希：

   /** 5、哈希
     * description :redis对哈希存取
     */
    @GetMapping("/hash")
    public void hashType(){
        HashOperations hashOperations = redisTemplate.opsForHash();
        hashOperations.put("key","name","张三");
        System.out.println(hashOperations.get("key","name"));
    }