Redis社交应用里面之关注、粉丝、共同好友案例

一 背景

二 代码

public void testSet(){
​
        BoundSetOperations operationLW  = redisTemplate.boundSetOps("user:lw");
​
        operationLW.add("A","B","C","D","E");
        System.out.println("老王的粉丝:"+operationLW.members());
        BoundSetOperations operationXD  = redisTemplate.boundSetOps("user:xd");
​
        operationXD.add("A","B","F","G","H","J");
        System.out.println("小D的粉丝:"+operationXD.members());
​
        //差集
        Set lwSet = operationLW.diff("user:xd");
        System.out.println("老王的优势:"+lwSet);
​
        //差集
        Set xdSet = operationXD.diff("user:lw");
        System.out.println("小滴的优势:"+xdSet);
​
        //交集
        Set interSet =  operationLW.intersect("user:xd");
        System.out.println("共同好友:"+interSet);
​
        //并集
        Set unionSet = operationLW.union("user:xd");
        System.out.println("两个人的并集:"+unionSet);
    
      //用户A是否是 老王 的粉丝
        boolean flag = operationLW.isMember("A");
        System.out.println(flag);
    }