底层表示层的JSP变化不是很频繁。
Have underlying presentation-layer JSPs that don't change frequently?
优化大型索引可能会非常耗时，而且应该在索引更新不是很频繁的情况下才进行。
Optimizing a large index can be very time-consuming and should be done, if at all, when index updates are infrequent.
这是一个更糟糕的解决方法：你的会话大概不会很频繁，而且和你不是很熟悉的人竞争是困难的。
This is a worse solution: your conversations will probably be less frequent, and it is difficult to compete with someone who you don't know well.
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