V2EX backward compatibility

Backward Compatibility

定义 Definition

Backward compatibility 指“向后兼容性”:新版本的软件、硬件、协议或文件格式仍能与旧版本的系统、数据或接口一起正常工作(让旧东西在新环境中不至于“用不了”)。在计算机领域也常简称为 backward compatibility / backward compatible。另有较少见的用法是与之相对的“向前兼容”(forward compatibility)。

发音 Pronunciation

/bkwrd kmptblti/

例句 Examples

The update improves security while keeping backward compatibility.
这次更新提升了安全性,同时保持了向后兼容性。

To ensure backward compatibility, the API keeps the old endpoints and adds new ones without breaking existing clients.
为了确保向后兼容性,这个 API 保留了旧的接口,并在不破坏现有客户端的前提下新增功能。

词源 Etymology

backward 来自“向后、回到过去的方向”,compatibility 源于拉丁语 compatibilis(“能够一起使用/共存”)相关词根。组合起来字面意思就是“能与更早/旧的东西一起运行或共存的能力”。这个短语在软件工程、系统设计与标准制定中广泛使用,用来强调升级不“断老用户的路”。

相关词 Related Words

文学作品与著作 Literary Works

  • The Pragmatic Programmer(Andrew Hunt, David Thomas)
  • Clean Code(Robert C. Martin)
  • Design Patterns: Elements of Reusable Object-Oriented Software(Erich Gamma 等)
  • The Mythical Man-Month(Frederick P. Brooks Jr.)
  • Code Complete(Steve McConnell)
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