接口幂等性（重复提交）问题

迈不过友情╰ 2023-02-13 14:37 8阅读 0赞

## 什么是幂等性 ##

![在这里插入图片描述][20200529151346558.png]

## 哪些情况需要防止幂等性 ##

![在这里插入图片描述][20200529151438362.png]

## 什么情况需要幂等性 ##

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Z5ajEzOTI1NDc1OTU3_size_16_color_FFFFFF_t_70]

## 幂等性解决方案 ##

### 1、token 机制 ###

![在这里插入图片描述][20200529151717349.png]  
![在这里插入图片描述][20200529151842182.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Z5ajEzOTI1NDc1OTU3_size_16_color_FFFFFF_t_70 1]

### 2、各种锁机制 ###

![在这里插入图片描述][20200529152056101.png]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Z5ajEzOTI1NDc1OTU3_size_16_color_FFFFFF_t_70 2]  
![在这里插入图片描述][20200529152244916.png]

### 3、各种唯一约束 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Z5ajEzOTI1NDc1OTU3_size_16_color_FFFFFF_t_70 3]  
![在这里插入图片描述][20200529152353179.png]

### 4、防重表 ###

![在这里插入图片描述][2020052915245251.png]

### 5、全局请求唯一ID ###

微服务 feign 调用 防重 可以使用 全全局请求唯一ID  
![在这里插入图片描述][20200529152600651.png]

[20200529151346558.png]: https://img-blog.csdnimg.cn/20200529151346558.png
[20200529151438362.png]: https://img-blog.csdnimg.cn/20200529151438362.png
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[20200529151717349.png]: https://img-blog.csdnimg.cn/20200529151717349.png
[20200529151842182.png]: https://img-blog.csdnimg.cn/20200529151842182.png
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[20200529152056101.png]: https://img-blog.csdnimg.cn/20200529152056101.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Z5ajEzOTI1NDc1OTU3_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200529152124174.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Z5ajEzOTI1NDc1OTU3,size_16,color_FFFFFF,t_70
[20200529152244916.png]: https://img-blog.csdnimg.cn/20200529152244916.png
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[20200529152353179.png]: https://img-blog.csdnimg.cn/20200529152353179.png
[2020052915245251.png]: https://img-blog.csdnimg.cn/2020052915245251.png
[20200529152600651.png]: https://img-blog.csdnimg.cn/20200529152600651.png