自动缓存到文件选项可能会造成性能问题，因为它本身不支持筛选和排序。

The automatic cache-to-file storage option can result in performance issues because it does not have native support for filtering and sorting.

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缓存的存储可以是自动的，结果将存到文件中，也可以由用户指定，这样终端用户可以选择支持的数据库保存缓存结果。

The storage for the cache can be either automatic, which stores the results to a file, or user-specified, in which case the end user can choose a supported database to store the cache results.

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虽然他们应该无效缓存支持文件更改时，这些信息并不总是发送正确规范或行为。

Although they are supposed to invalidate their caches when the backing file changes, that information isn't always sent to specification or acted on properly.

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