复制可以是同步或异步的；将数据写入 WebSphere eXtreme Scale 缓存时区别很重要。

Replicas can be synchronous or asynchronous; the distinction is important when data is written to a WebSphere eXtreme Scale cache.

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不再把实例数据写入页面，而是从服务器异步检索数据然后将其动态增加到页面模型中。

Instead of writing the instance data to the page, you'll retrieve it asynchronously from the server and then dynamically add it to the model on the page.

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IO命名空间包含允许对数据流和文件进行同步和异步读取及写入的类型。

IO namespace contains types that allow synchronous and asynchronous reading and writing on data streams and files.

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