redis--模拟lol英雄出场的TOPN | pubsub发布订阅频道

需求：实时的返回每个英雄出场的频次

package com.doit.day02;


import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPool;
import redis.clients.jedis.Tuple;

import java.util.*;

public class HeroTopN {
    public static void main(String[] args) {
        JedisPool jedisPool = new JedisPool("linux01", 6379);
        Jedis jedis = jedisPool.getResource();
        new Thread(new HeroComming(jedis)).start();
        Timer timer = new Timer();
        timer.schedule(new MyTimerTask(jedis),3000,5000);

    }
}

class HeroComming implements Runnable{
    private Jedis jedis;

    public HeroComming(Jedis jedis) {
        this.jedis = jedis;
    }

    @Override
    public void run() {
        ArrayList<String> list=new ArrayList<>();
        list.add("号丝给");
        list.add("儿童劫");
        list.add("瞎子");
        list.add("麻辣小龙虾");
        list.add("火男");
        list.add("琴女");
        Random random = new Random();
        while(true){
            int index = random.nextInt(list.size());
            String s = list.get(index);
            jedis.zincrby("hero",1,s);
            try {
                Thread.sleep(150);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
        }
    }
}
class MyTimerTask extends TimerTask{
    private Jedis jedis;

    public MyTimerTask(Jedis jedis) {
        this.jedis = jedis;
    }

    @Override
    public void run() {
        ArrayList<String> list = new ArrayList<>();
        Set<Tuple> set = jedis.zrevrangeWithScores("hero", 0, 2);
        for (Tuple tuple : set) {
            String element = tuple.getElement();
            double score = tuple.getScore();
            list.add(element+":"+score);
        }
        System.out.println("----------------------------------");
        System.out.println("出场次数前三的英雄为:"+list);
    }
}

pubsub发布订阅频道

package com.doit.day02;

import redis.clients.jedis.Jedis;
import redis.clients.jedis.JedisPubSub;

public class SubscribeD {
    public static void main(String[] args) {
        Jedis jedis = new Jedis("linux01", 6379);

        jedis.subscribe(new JedisPubSub() {
            @Override
            public void onMessage(String channel, String message) {
                if (channel.equals("A")){
                    //大写
                    String res = message.toUpperCase();
                    System.out.println("这是从"+channel+"传来的消息,消息是"+res);
                }else if (channel.equals("B")){
                    String res = message.toLowerCase();
                    System.out.println("这是从"+channel+"传来的消息,消息是"+res);
                }else {
                    String res = message+"____其他渠道";
                    System.out.println("这是从"+channel+"传来的消息,消息是"+res);
                }
            }
        },"A","B","C","shell");
    }
}