With this technique, you are effectively starting the transaction at a lower level in the call stack, thereby reducing the amount of time you are in the database.
通过此技巧，您可以有效地在调用栈的较低层次开始事务，从而减少花费在数据库中的时间。
A similar technique is used to give you the option of starting an instant messaging session.
通过类似的技术为您提供启动即时消息会话的选项。
This technique can easily be the starting point for encoding with other styles.
这个技术可以很容易地成为以其他风格进行编码的起点。
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