Database optimization is the most important job of system maintenance.

数据库的优化是系统维护工作中最重要的任务之一。

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But to get the most out of your database optimization efforts, there are two things that you need to know.

但是，为了通过数据库优化获得最大的收益，您需要了解两件事。

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In the next article, I'll write about some tricks that we use to do database optimization for another example of real world Rails.

在下一篇文章中，我将介绍一些实用技巧，您可以使用这些技巧来为另一个真实世界中的Rails示例进行数据库优化。

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