items to update

A component follows a simple pattern when using server-side APIs to update one of its items.

在使用服务器端api来更新其中一个项时，组件遵循一种简单的模式。

The update strategies from publisher to receiver always included full update of all items in the collection, incremental updates of just one or several items, invalidations, etc.

从发布者到接收者的更新策略总是包括对这组数据结构中所有项的完整更新，对一个或多个项的增量更新，无效更新等。

You can configure options such as the number of items to fetch per feed, update interval and the content extraction method.

你还可以自己设置诸如每次显示的条目数、更新间隔、内容筛选法则等。