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With DataNucleus' L2 cache configuration, the "datanucleus.cache.level2.maxSize" is used to configure the cache.

The docs say that -1 is the default, and imply that this is turned on.

I'm guessing that -1 therefore means provide a cache up until some sort of -Xmx heap limit; but is that right?

If some other value is used, what are the units? Is it number of cached objects, bytes used, Mbytes used, something else?

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对象的数量,对于支持它的 L2 缓存提供程序。

于 2013-10-21T16:00:43.683 回答