November 2019
Beginner to intermediate
406 pages
9h 21m
Chinese
Content preview from Java持续交付
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自动化构建过程
｜
67
多模块项目
虽然多模块项目是最不好被理解的（并且可能是最常被滥用的）概念，但如果正确部署，
它们可以变得很强大。当应用程序中明确定义了各个组件时，多模块构建是很有效的，
因为尽管组件之间接口定义明确、边界清晰，但它们一旦超过某些范围（例如父项目），
就无法提供更多的价值。因此，多模块项目允许你将这些组件与用户界面组件（例如
GUI
或
Web
应用程序）组合在一起，并且通过一个命令来构建整个系统。构建系统应该
能够确定此类应用程序的构建顺序，并且最后生成的组件和应用程序都可以使用相同的
版本标识符。
仔细权衡是否选择多模块项目
根据我们以往的经验（也在
Stack Overflow
上快速搜索了一下），多模块项目比普
通应用程序的复杂性更高。在你开始将应用程序划分为多模块之前，请先仔细权
衡一下 ：使用模块化带来的好处，是否抵得过它增加的复杂性，以及必须使用指
定构建工具的潜在风险。
使用多代码库还是单代码库
无论如何组织代码，你的构建工具都应该能够构建项目。随着微服务架构的普及，人们
对使用单代码库还是多代码库来存储代码的争论越来越多。虽然这听起来类似前面对于
多模块项目的讨论，但是多模块项目总是存储在一个代码库中的，因为模块之间是有效
耦合的（以一种积极的方式）。但是，如果要创建由多个（或许多）微服务组成的应用程序，
那么就不太容易选择了。如果每个项目自己都有一个小的、版本独立的代码库，那么它
所依赖的其他代码也要这样做吗？
关于多代码库和单代码库的争论
有几个很好的在线资源，可以帮助你选择使用多代码库还是单代码库，但是在这 ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.