Web servers built specifically for serving up static pages tend to have less overhead and are tuned for that purpose.
专门为服务于静态页面而设计的Web服务器拥有的开销更少，且专为此目的作了调优。
The closer the ratio is to 100 percent, the lower the frequency of disk I/O, and therefore the less overhead of reading data.
命中率越接近 100%，磁盘I/O的频率就越低，因而读取数据的开销就越少。
By making data types consistent within the DDL, there is less overhead associated with conversion of data at query run time.
通过在DDL中确保数据类型一致，在查询运行当中与数据转换相关的开销会比较小。
Instead of e.g. passing large images through a flow, a pointer to the image in form of a file name or image id causes much less overhead in the business flow engine.
例如，不要通过一个流来处理大图像，一个以文件名或图像ID形式指向图像的指针将大大减小业务流引擎中的开销。
Instead of e.g. passing large images through a flow, a pointer to the image in form of a file name or image id causes much less overhead in the business flow engine.
例如，不要通过一个流来处理大图像，一个以文件名或图像ID形式指向图像的指针将大大减小业务流引擎中的开销。
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