设置适当的缓存大小和生存期值对于实现最佳性能非常关键。

Setting the correct cache sizes and lifetime values is critical in achieving optimal performance.

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太频繁过期的缓存会导致不必要的性能下降；因此，优化缓存生存期值也是非常重要的。

A cache that expires too often can result in unnecessary performance degradation; therefore cache lifetime values are also important to tune.

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非持久性属性只在GBean实例的生存期间保持它们的值，在实例消失后也消失。

Nonpersistent attributes retain their value during the life of the GBean instance and disappear when the instance goes away.

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