November 2019
Beginner to intermediate
406 pages
9h 21m
Chinese
Content preview from Java持续交付
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34
｜
第
3
章
设计持续交付的架构
云平台中的绝大多数
I/O
操作都通过网络进行。例如，看上去是本地的弹性块存储通常
由一个存储区域网络（
SAN
）提供，性能特征差异很大。如果你在本地计算机上开发一
个应用程序，包含三个频繁访问数据库的服务，那么你就会发现，同样是访问
localhost
回环网络和直接访问
SSD
块存储的操作，本地环境和云平台上的性能差异很大。这甚至
可以决定一个项目的成败。
大多数云计算的基础设施天生就是短暂的，与本地环境的硬件相比，也更容易出现故障。
结合我们大多数人在设计分布式系统时所遵循的原则，你必须设计出能够容忍服务消失
或者被重新部署的系统。当许多开发人员在考虑如何测试这类故障时，脑海中都会浮现
出
Netflix Simian Army
和
Chaos Monkeys
工具。但是，这类测试通常是在生产环境中进
行的。在开发
CD
构建管道时，你还需要实现一个有限的但是功能相当的混乱测试，只
不过在故障类型和效果方面更加可控。
Release It!
开发人员必读资料
虽然已经发布了第
2
版，但是
Michael Nygard
的
Release It!
(Pragmatic Bookshelf)
（
https://pragprog.com/book/mnee2/release-it-second-edition
）仍然经常被开发人员
所忽视，因为他们没有意识到本书的主题是什么。但是，这是一本介绍如何设计
和部署高可用、可容错的生产级软件的首选参考手册。在我们看来，这对于任何
一名正在创建服务化应用程序或者在（分布式的）云平台上部署的 ...
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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.