Some applications frequently need to read and write large amounts of data to the disk, which is often the slowest step in a computation.
有些应用程序通常会需要从磁盘中读写大量的数据，这通常是整个计算过程中速度最慢的一个步骤。
If you want to write large amounts of data from a portlet, it is usually a good approach to flush the buffered data partly rather than flushing them completely in a single blow.
如果希望写入大量来自Portlet的数据，通常最好采用对已缓存的数据进行部分刷新的方式，而不采用对全部数据一次性刷新的方式。
Principle of Parsimony: Write large components only when it is clear by demonstration that nothing else will do.
吝啬原则：除非能够明确证明别无它法，否则不要编写大的组件。
Principle of Parsimony: Write large components only when it is clear by demonstration that nothing else will do.
吝啬原则：除非能够明确证明别无它法，否则不要编写大的组件。
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