Spring Boot实战解决高并发数据入库: Redis 缓存+MySQL 批量入库

桃扇骨 2022-11-25 11:38 222阅读 0赞

## 前言 ##

> 最近在做阅读类的业务，需要记录用户的PV，UV；
> 
> 项目状况：前期尝试业务阶段；
> 
> 特点：
> 
>  *  快速实现（不需要做太重，满足初期推广运营即可）
>  *  快速投入市场去运营
> 
> 收集用户的原始数据，三要素：
> 
>  *  谁
>  *  在什么时间
>  *  阅读哪篇文章
> 
> 提到PV，UV脑海中首先浮现特点：
> 
>  *  需要考虑性能（每个客户每打开一篇文章进行记录）
>  *  允许数据有较小误差（少部分数据丢失）

## 架构设计 ##

*  架构图：

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTI4MjkxMjQ_size_16_color_FFFFFF_t_70_pic_center]

*  时序图  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTI4MjkxMjQ_size_16_color_FFFFFF_t_70_pic_center 1]
 *  记录基础数据MySQL表结构

CREATE TABLE `zh_article_count` (
      `id` bigint(20) NOT NULL AUTO_INCREMENT,
      `bu_no` varchar(32) DEFAULT NULL COMMENT '业务编码',
      `customer_id` varchar(32) DEFAULT NULL COMMENT '用户编码',
      `type` int(2) DEFAULT '0' COMMENT '统计类型:0APP内文章阅读',
      `article_no` varchar(32) DEFAULT NULL COMMENT '文章编码',
      `read_time` datetime DEFAULT NULL COMMENT '阅读时间',
      `create_time` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '创建时间',
      `update_time` datetime DEFAULT CURRENT_TIMESTAMP COMMENT '更新时间',
      `param1` int(2) DEFAULT NULL COMMENT '预留字段1',
      `param2` int(4) DEFAULT NULL COMMENT '预留字段2',
      `param3` int(11) DEFAULT NULL COMMENT '预留字段3',
      `param4` varchar(20) DEFAULT NULL COMMENT '预留字段4',
      `param5` varchar(32) DEFAULT NULL COMMENT '预留字段5',
      `param6` varchar(64) DEFAULT NULL COMMENT '预留字段6',
      PRIMARY KEY (`id`) USING BTREE,
      UNIQUE KEY `uk_zh_article_count_buno` (`bu_no`),
      KEY `key_zh_article_count_csign` (`customer_id`),
      KEY `key_zh_article_count_ano` (`article_no`),
      KEY `key_zh_article_count_rtime` (`read_time`)
    ) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COMMENT='文章阅读统计表';

*  技术实现方案
    
    SpringBoot
    
    Redis
    
    MySQL

## 代码实现 ##

*  完整代码（GitHub，欢迎大家**Star,Fork,Watch**)
    
    [**https://github.com/dangnianchuntian/springboot**][https_github.com_dangnianchuntian_springboot]
 *  主要代码展示
    
     *  Controller

/* * Copyright (c) 2020. zhanghan_java@163.com All Rights Reserved. * 项目名称：Spring Boot实战解决高并发数据入库: Redis 缓存+MySQL 批量入库 * 类名称：ArticleCountController.java * 创建人：张晗 * 联系方式：zhanghan_java@163.com * 开源地址: https://github.com/dangnianchuntian/springboot * 博客地址: https://zhanghan.blog.csdn.net */
    
    package com.zhanghan.zhredistodb.controller;
    
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.validation.annotation.Validated;
    import org.springframework.web.bind.annotation.RequestBody;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.RequestMethod;
    import org.springframework.web.bind.annotation.RestController;
    
    import com.zhanghan.zhredistodb.controller.request.PostArticleViewsRequest;
    import com.zhanghan.zhredistodb.service.ArticleCountService;
    
    @RestController
    public class ArticleCountController { 
    
        @Autowired
        private ArticleCountService articleCountService;
    
       /** * 记录用户访问记录 */
        @RequestMapping(value = "/post/article/views", method = RequestMethod.POST)
        public Object postArticleViews(@RequestBody @Validated PostArticleViewsRequest postArticleViewsRequest) { 
            return articleCountService.postArticleViews(postArticleViewsRequest);
        }
        /** * 批量将缓存中的数据同步到MySQL（模拟定时任务操作） */
    
        @RequestMapping(value = "/post/batch", method = RequestMethod.POST)
        public Object postBatch() { 
            return articleCountService.postBatchRedisToDb();
        }
    
    }

*  Service

/* * Copyright (c) 2020. zhanghan_java@163.com All Rights Reserved. * 项目名称：Spring Boot实战解决高并发数据入库: Redis 缓存+MySQL 批量入库 * 类名称：ArticleCountServiceImpl.java * 创建人：张晗 * 联系方式：zhanghan_java@163.com * 开源地址: https://github.com/dangnianchuntian/springboot * 博客地址: https://zhanghan.blog.csdn.net */
    
    package com.zhanghan.zhredistodb.service.impl;
    
    import java.util.ArrayList;
    import java.util.Date;
    import java.util.List;
    import java.util.stream.Collectors;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.data.redis.core.RedisTemplate;
    import org.springframework.stereotype.Service;
    import org.springframework.util.CollectionUtils;
    
    import com.alibaba.fastjson.JSON;
    import com.zhanghan.zhredistodb.controller.request.PostArticleViewsRequest;
    import com.zhanghan.zhredistodb.dto.ArticleCountDto;
    import com.zhanghan.zhredistodb.mybatis.mapper.XArticleCountMapper;
    import com.zhanghan.zhredistodb.service.ArticleCountService;
    import com.zhanghan.zhredistodb.util.wrapper.WrapMapper;
    
    import cn.hutool.core.util.IdUtil;
    
    @Service
    public class ArticleCountServiceImpl implements ArticleCountService { 
    
        private static Logger logger = LoggerFactory.getLogger(ArticleCountServiceImpl.class);
    
        @Autowired
        private RedisTemplate<String, String> strRedisTemplate;
    
        @Autowired
        private XArticleCountMapper xArticleCountMapper;
    
        @Value("${zh.article.count.redis.key:zh}")
        private String zhArticleCountRedisKey;
    
        @Value("#{T(java.lang.Integer).parseInt('${zh..article.read.num:3}')}")
        private Integer articleReadNum;
    
        /** * 记录用户访问记录 */
        @Override
        public Object postArticleViews(PostArticleViewsRequest postArticleViewsRequest) { 
    
            ArticleCountDto articleCountDto = new ArticleCountDto();
            articleCountDto.setBuNo(IdUtil.simpleUUID());
            articleCountDto.setCustomerId(postArticleViewsRequest.getCustomerId());
            articleCountDto.setArticleNo(postArticleViewsRequest.getArticleNo());
            articleCountDto.setReadTime(new Date());
            String strArticleCountDto = JSON.toJSONString(articleCountDto);
            strRedisTemplate.opsForList().rightPush(zhArticleCountRedisKey, strArticleCountDto);
            return WrapMapper.ok();
        }
    
        /** * 批量将缓存中的数据同步到MySQL */
        @Override
        public Object postBatchRedisToDb() { 
    
            Date now = new Date();
    
            while (true) { 
    
                List<String> strArticleCountList =
                        strRedisTemplate.opsForList().range(zhArticleCountRedisKey, 0, articleReadNum);
    
                if (CollectionUtils.isEmpty(strArticleCountList)) { 
                    return WrapMapper.ok();
                }
    
                List<ArticleCountDto> articleCountDtoList = new ArrayList<>();
    
                strArticleCountList.stream().forEach(x -> { 
                    ArticleCountDto articleCountDto = JSON.parseObject(x, ArticleCountDto.class);
                    articleCountDtoList.add(articleCountDto);
                });
    
                //过滤出本次定时任务之前的缓存中数据,防止死循环
                List<ArticleCountDto> beforeArticleCountDtoList = articleCountDtoList.stream().filter(x -> x.getReadTime()
                        .before(now)).collect(Collectors.toList());
    
                if (CollectionUtils.isEmpty(beforeArticleCountDtoList)) { 
                    return WrapMapper.ok();
                }
    
                xArticleCountMapper.batchAdd(beforeArticleCountDtoList);
    
                Integer delSize = beforeArticleCountDtoList.size();
    
                strRedisTemplate.opsForList().trim(zhArticleCountRedisKey, delSize, -1L);
            }
    
        }
    
    }

## 测试 ##

*  模拟用户请求访问后台（多次请求）  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTI4MjkxMjQ_size_16_color_FFFFFF_t_70_pic_center 2]
 *  查看缓存中访问数据  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTI4MjkxMjQ_size_16_color_FFFFFF_t_70_pic_center 3]
 *  模拟定时任务将缓存中数据同步到DB中  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTI4MjkxMjQ_size_16_color_FFFFFF_t_70_pic_center 4]
 *  这时查看缓存中的数据已经没了  
    ![在这里插入图片描述][20200808140648327.png_pic_center]
 *  查看数据库表结构  
    ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTI4MjkxMjQ_size_16_color_FFFFFF_t_70_pic_center 5]

## 总结 ##

*  项目中定时任务
    
     *  问演示方便用http代替定时任务调度；实际项目中用XXL-job,参考:[定时任务的选型及改造][Link 1]
     *  定时任务项目中用redis锁防止并发（定时任务调度端多次调度等)，参考:[Redis实现计数器—接口防刷—升级版（Redis+Lua）][Redis_Redis_Lua]
 *  后期运营数据可以从阅读记录表中拉数据进行相关分析
 *  访问量大：可以将MySQL中的阅读记录表定时迁移走（MySQL建历史表，MongoDB等）

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[https_github.com_dangnianchuntian_springboot]: https://github.com/dangnianchuntian/springboot
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTI4MjkxMjQ_size_16_color_FFFFFF_t_70_pic_center 2]: /images/20221124/c1e7dc2dea1148198e5fbc825db63c1f.png
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[20200808140648327.png_pic_center]: /images/20221124/cb55e9948eca4fa39f3d8b3c7f066415.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTI4MjkxMjQ_size_16_color_FFFFFF_t_70_pic_center 5]: /images/20221124/0dc8829f2c6241a88bdab9ee870668b4.png
[Link 1]: https://zhanghan.blog.csdn.net/article/details/79677502
[Redis_Redis_Lua]: https://blog.csdn.net/zhanghan18333611647/article/details/79594974