这给我们带来了一种事务概念，通过参与行动进行的更改要么全部被永久化，要么一个都不。
This brings us to the concept of a transaction where, all or none of the changes made by participating operations need to be made permanent.
保存所做的全部更改并重新启动服务器（如果尚未重新启动）。
Save all the changes you have made and restart your server, if you have not already done so.
通常，您会先创建一个会话，对配置做几处更改，然后一次保存会话过程中所做的全部更改。
Typically you create a session, perform several configuration changes, then save all the changes made during the session at one time.
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