请记住，他们是永久性的，您的浏览器会预先缓存。
Remember that they are permanent, and aggressively cached by your browser.
因为预先缓存了来自[HistoricSales]数据集的查询结果，所以整个时间段的销售数据执行的查询性能得到了改善。
Because query results from the [HistoricSales] cube are pre-cached, the performance for queries that are run against the sales data of the entire time period is improved.
这两种Feed方法具有能对Feed进行预先呈现或缓存的优势。
Either feed approach has the advantage that the feeds can be pre-rendered or cached.
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