Current programming models only provide abstractions for sharing data under a homogeneous consistency model. It is, however, not uncommon for a distributed application to provide strong consistency for one part of the shared data and eventual consistency for another part. Because mixing consistency models is not supported by current programming models, writing such applications is extremely difficult. In this paper we propose CScript, a distributed object-oriented programming language with built-in support for data replication. At its core are consistent and available replicated objects. CScript regulates the interactions between these objects to avoid subtle inconsistencies that arise when mixing consistency models. Our evaluation compares a collaborative text editor built atop CScript with a state-of-the-art implementation. The results show that our approach is flexible and more memory efficient.

当前的编程模型仅提供用于在同类一致性模型下共享数据的抽象。但是，分布式应用程序为共享数据的一部分提供强一致性，而为另一部分提供最终一致性并不少见。由于当前的编程模型不支持混合一致性模型，因此编写此类应用程序非常困难。在本文中，我们提出了CScript，这是一种分布式的面向对象的编程语言，内置了对数据复制的支持。其核心是一致且可用的复制对象。CScript调节这些对象之间的交互，以避免在混合一致性模型时出现细微的不一致。我们的评估将基于CScript的协作文本编辑器与最新的实现方式进行了比较。