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这篇文章给大家分享的是有关Spring Boot如何解决Redis缓存+MySQL批量入库问题的内容。小编觉得挺实用的,因此分享给大家做个参考,一起跟随小编过来看看吧。
架构图:

时序图

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
完整代码(GitHub,欢迎大家Star,Fork,Watch)
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;
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
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)) {
xArticleCountMapper.batchAdd(beforeArticleCountDtoList);
Integer delSize = beforeArticleCountDtoList.size();
strRedisTemplate.opsForList().trim(zhArticleCountRedisKey, delSize, -1L);
}
}模拟用户请求访问后台(多次请求)

查看缓存中访问数据

模拟定时任务将缓存中数据同步到DB中

这时查看缓存中的数据已经没了

查看数据库表结构

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