This project forked from mikuhop/skill
秒杀业务的架构设计
基础秒杀项目简单架构设计
所用技术： 前端 layui+jquery 后端 springboot +redis+rabbitmq+thymeleaf+jsr303 数据库 mysql5.6
项目也用了分布式缓存和分布式session 以及分布式缓存配合本地缓存使用
对于超卖等问题的解决 update .... where id=.. and stock>0 利用了数据库的行锁 同时对秒杀表的uid_goodsid 做了唯一索引
当然 你也可以利用redis 分布式锁解决
核心秒杀架构：
系统初始化时 加载库存进redis存储
秒杀请求到时 做一些业务检查 或重复性检查再对redis预减库存 减少数据库访问
本地Map内存标记缓存以减少对redis的访问
异步下单 请求入队 立即返回排队中
请求出队 生成订单 减少库存 （在一个事务中）若失败后 注意需对预减的库存加回去 以保证内存的库存可数据库中的一致性
客户端轮询 是否成功
安全方面的考虑：
数据加密
秒杀地址隐藏 动态
限流防刷限制
数学公式验证码校验
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