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_data/docs.yml

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- title: TX-LCN
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docs:
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- txlcn-index
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- txlcn-lessson01
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- txlcn-lessson02
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- txlcn-lesson01
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- txlcn-lesson02

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title: 分布式事务从0到1-认识分布式事务
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permalink: /docs/txlcn-lessson01/
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permalink: /docs/txlcn-lesson01/
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---
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<iframe src="//player.bilibili.com/player.html?aid=80626430&page=1"

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title: 分布式事务从0到1-了解TX-LCN原理
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permalink: /docs/txlcn-lessson02/
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permalink: /docs/txlcn-lesson02/
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---
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![](/img/WX20191220-102719.png)
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<iframe src="//player.bilibili.com/player.html?aid=80676649&cid=138066500&page=1"
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scrolling="no" border="0" frameborder="no" width="100%" height="600px" framespacing="0" allowfullscreen="true"> </iframe>
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本节课讲解的主要内容是TX-LCN分布式事务的原理介绍。
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### TX-LCN的核心控制流程
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控制在同一次事务下同一个被负载的模块被重复调用时将只会请求到第一次被选中的模块。
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### 保障机制与补偿
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<iframe src="//player.bilibili.com/player.html?aid=80676836&cid=138067157&page=1" scrolling="no" border="0"
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width="100%" height="600px" frameborder="no" framespacing="0" allowfullscreen="true"> </iframe>
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#### 超时机制
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当业务模块在接受到事务请求,并完成响应以后会自动加入定时任务,等待TM通知,若TM迟迟不通知则触发TC主动请求的状况,若TC没有请求到数据就记录补偿(回滚事务)。
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#### TM清理机制

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