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docs: update UUID desc to fix #22, rename images

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- Update UUID desc to fix #22
- Rename img to images
- Fix typo
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yanglbme
2019-01-07 15:44:02 +08:00
parent 1caf071b59
commit a7cb243259
248 changed files with 93 additions and 94 deletions
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docs/high-concurrency/redis-cas.md
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@@ -9,7 +9,7 @@ redis 的并发竞争问题是什么？如何解决这个问题？了解 redis
## 面试题剖析
某个时刻，多个系统实例都去更新某个 key。可以基于 zookeeper 实现分布式锁。每个系统通过 zookeeper 获取分布式锁，确保同一时间，只能有一个系统实例在操作某个 key，别人都不允许读和写。
![zookeeper-distributed-lock](/img/zookeeper-distributed-lock.png)
![zookeeper-distributed-lock](/images/zookeeper-distributed-lock.png)
你要写入缓存的数据，都是从 mysql 里查出来的，都得写入 mysql 中，写入 mysql 中的时候必须保存一个时间戳，从 mysql 查出来的时候，时间戳也查出来。