Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

"更假简单"->"更加简单" #43

Merged
merged 1 commit into from
Nov 26, 2019
Merged

"更假简单"->"更加简单" #43

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
4 changes: 2 additions & 2 deletions ch5.md
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -287,7 +287,7 @@

​ 如前所述，应用程序可以提供比底层数据库更强有力的保证，例如通过主库进行某种读取。但在应用程序代码中处理这些问题是复杂的，容易出错。

​ 如果应用程序开发人员不必担心微妙的复制问题，并可以信赖他们的数据库“做了正确的事情”，那该多好呀。这就是**事务（transaction）**存在的原因：**数据库通过事务提供强大的保证**，所以应用程序可以更假简单。
​ 如果应用程序开发人员不必担心微妙的复制问题，并可以信赖他们的数据库“做了正确的事情”，那该多好呀。这就是**事务（transaction）**存在的原因：**数据库通过事务提供强大的保证**，所以应用程序可以更加简单。

​ 单节点事务已经存在了很长时间。然而在走向分布式（复制和分区）数据库时，许多系统放弃了事务。声称事务在性能和可用性上的代价太高，并断言在可扩展系统中最终一致性是不可避免的。这个叙述有一些道理，但过于简单了，本书其余部分将提出更为细致的观点。第七章和第九章将回到事务的话题，并讨论一些替代机制。

Expand Down Expand Up @@ -922,4 +922,4 @@

| 上一章 | 目录 | 下一章 |
| :--------------------------------: | :-----------------------------: | :--------------------: |
| [第二部分：分布式数据](part-ii.md) | [设计数据密集型应用](README.md) | [第六章：分区](ch6.md) |
| [第二部分：分布式数据](part-ii.md) | [设计数据密集型应用](README.md) | [第六章：分区](ch6.md) |