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.
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.
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.
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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