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聊聊接口幂等与消费幂等的本质
2022-04-23 06:30:00 【梦江河梦】
接口幂等与如何防止消息重复怎么解决？
幂等：执行多次与执行一次对业务数据的影响一样
本质：数据没有错误
从本质解决问题，执行代码前先加分布式锁，然后判断(判断数据是否能插入，是否能更新，是否能删除)。既然加分布式锁就涉及到锁的key是什么？推荐用业务key，而不是请求的唯一ID或者消息的唯一ID。因为可能两个不同的请求/消息都想操作同一数据，数据就不安全了。
版权声明
本文为[梦江河梦]所创，转载请带上原文链接，感谢
https://blog.csdn.net/weixin_42002747/article/details/123028460
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