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。

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

youdao

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。

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

youdao