November 2019
Beginner to intermediate
406 pages
9h 21m
Chinese
Content preview from Java持续交付
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28
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第
3
章
设计持续交付的架构
从头开始设计和建造一个用途明确的房子要容易得多，设计和构建软件也是一样的。
架构不好的另一个隐性成本是，你不得不花费大量时间来修补系统，而没有时间创新。
如果你的时间都像“打地鼠”一样用来解决各种软件
bug
，而不是开发新的功能，那么
你肯定知道架构是有问题的。良好的软件架构会降低
bug
出现的可能，并且降低
bug
带
来的负面后果，这样的系统会把错误“包裹”起来，并且能够通过架构所提供的机制，
用最小的成本来解决任何问题。良好的架构也更加鼓励创新，因为它更清楚需要如何来
支持创新，架构本身也可以成为创新的催化剂，让你看到隐藏在表面之下的机会。
尽管从某种程度上讲，对架构质量的持续监控和分析，直接影响持续交付的水平，但
是构建管道可以成为一种收集相关指标的有效方式。你可以在构建过程中加入像
SonarQube
之类的工具，用来显示代码的内聚性、耦合性和复杂性，还可以使用高级的
复杂性指标报告，例如圈复杂度（检查程序源代码中依赖路径的数量）和设计结构质量
指数（
DSQI
，一种用于评估计算机程序设计结构和模块效率的架构设计指标）。
其他工具，例如
Adam Tornhill
的
Code Maat
，也可以通过对版本控制系统的数据挖掘和
分析，显示被频繁调用的代码库。这可以向企业证明，花费时间和金钱来改进架构，有
助于理解代码中频繁调用的复杂逻辑，并且反过来能得到更高的投资回报。
复杂性和变更成本
成熟的、遗留的架构一般都会由多种技术组成，主要基于当时流行的框架和相关工程师
的经验。这就是架构中缺乏结构（或者结构过于复杂）会对组织产生很大影响的地方 ...
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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.