The reason for using binding parameters is to ask the database to parse your SQL once and reuse the generated execution plan for subsequent repeat requests, which saves both CPU time and memory.

使用绑定参数的原因是让数据库一次解析sql，对后续的重复请求复用生成好的执行计划，这样做节省了CPU时间和内存。

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This two-part article addresses only program-execution time. It doesn't consider other important execution characteristics, such as memory usage.

这个分两部分的文章系列只讨论程序执行时间，不考虑执行程序时的其他重要性质，比如内存使用量。

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The body is not needed before the specific item was selected from the portlet, so retrieving it any earlier would be a waste of execution time and memory resources.

在从Porlet中选择特定的项之前，不需要正文，因此提前检索正文将浪费执行时间和内存资源。

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