The changes made to the index are initially buffered in the memory and periodically flushed to the index directory.

对索引所做的更改最初缓存在内存中，并周期性转储到索引目录。

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IndexWriter exposes several fields that control how indices are buffered in the memory and written to disk.

IndexWriter公开了几个控制如何在内存中缓存索引并写入磁盘的字段。

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Set Maximum number of event messages buffered in memory higher than the peak expected burst size.

将Maximum number of event messages buffered in memory设置为高于预期连续事件峰值的值。

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