尽管文件系统的实现并不复杂，但它是可伸缩和可扩展的体系结构的好例子。
While the file system implementation is anything but trivial, it's a great example of a scalable and extensible architecture.
对象类型允许将系统中的组件相互分离，从而得到可重用、可扩展和可伸缩的代码。
Object types allow you to separate (decouple) the components of a system from one another, which makes for reusable, extensible, and scalable code.
这让用户能够配置可伸缩的集群，可以随着需求的增长轻松地扩展集群的 CPU 和内存量，不需要提前购买不使用的硬件。
This enables users to configure clusters that are scalable and to expand easily the clusters' CPU and memory capacity as the need arises, without having to pay upfront for unused hardware.
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