What role design concepts like Dependency Injection (DI), Aspect-Oriented Programming (AOP), and Annotations can play in software development in general and API design in particular?

像依赖注射（ Dependency Injection）(DI)、面向方面编程（ Aspect-Oriented Programming）(AOP)，以及注解（Annotations）这样的设计理念，在常规的软件开发，尤其在API设计中能起到怎样的作用呢？

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The interfaces to the middleware platform define a programming model that must be understood by software architects who want to design, build, and deploy solutions to the middleware platform.

中间件平台接口定义了程序设计模式，那些想要设计、构建并在中间件平台上部署解决方案的软件构架师们必须理解此程序设计模式。

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That is why there is research in software design, programming methods, structured programming and related topics.

这就是为什么存在对软件设计，编程方法，结构编程和相关话题的研究。

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Equally important are the engineering practices of Extreme Programming (XP), particularly test-driven development, simplicity of design, pair programming and re-factoring (upgrading and simplifying) software code.

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