2024-01-24-redis4

秒杀活动

        需求：库存中有10件商品 商品的信息自定义 同时有100个人去抢购（这里100个人的抢购由jmeter来模拟）

         jmeter的使用

 

 

         在idea中将后台代码实现

package org.aaa.controller;

import org.apache.commons.lang3.StringUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import redis.clients.jedis.Jedis;
import redis.clients.jedis.Transaction;

import javax.annotation.Resource;
import java.util.List;
import java.util.UUID;

@RestController
@RequestMapping("seckill")
public class MySecKillController {

    private String key="pro:1";

    @PostMapping
    public void begin(String val){
        Jedis jedis = new Jedis("192.168.162.33",6379);
        jedis.auth("yma");
        jedis.set(key,val);
    }

    @GetMapping
    public void seckill(){
        Jedis jedis = new Jedis("192.168.162.33",6379);
        jedis.auth("yma");
        String s = jedis.get(key);
        if (StringUtils.isBlank(s)){
            System.out.println("秒杀活动还没开始");
        }else {
            jedis.watch(key);
            int i = Integer.parseInt(s);
            if (i>0){
                Transaction multi = jedis.multi();
                multi.decr(key);
                multi.sadd("userList", UUID.randomUUID().toString());
                List