One of the ways that you can fine tune performance is to adjust the level of cache scrubbing.

更好地调优性能的一个方法是，调整缓存清除的级别。

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If a distributed cache is desired, we recommend using one of the WebSphere-provided distributed cache implementations. These can be used as a second level cache with hibernate.

如果需要分布式缓存，我们建议使用WebSphere提供的分布式缓存实现之一。

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But so will the addition of one megabyte of level 3 cache, as well as the Double Data Rate SDRAM memory with a 133-MHz system cache standard on all models.

FORBES: Powerbook Gets Faster, Again