While the RDBMS provides a rock-solid foundation for storing data in traditional client-server architectures, it doesn't easily (or cheaply) scale to multiple nodes.

尽管RDBMS为在传统的客户端-服务器架构中存储数据提供了一个坚实的基础，但它不能轻松地(或便宜地)扩展到多个节点。

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Today, client-server architectures have been replaced by browser-based user Web applications and the cost of computing has fallen dramatically which, along with cloud computing, have made scalability issue quite a different proposition.

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