我们还描述了在不同的范围和结构下用于记录性能评价和可评价性工具的技术，并研究了测试的结果。
We also describe the techniques that we used to record performance measurements and scalability metrics under different scales and topologies and investigate the results of the tests.
体系结构描述包括所作出的选择背后的基本原理、设计的备选方法，以及在体系结构中如何处理各个需求的记录。
The architecture description includes the rationale behind choices, the alternatives envisaged, as well as a record of how each requirement is addressed in the architecture.
基于记录的逻辑模型定义数据库的整个逻辑结构以及实现的更高级描述。
Record-based logical models define the overall logical structure of the database as well as higher level description of its implementation.
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