November 2019
Beginner to intermediate
406 pages
9h 21m
Chinese
Content preview from Java持续交付
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50
｜
第
4
章
Java
应用的部署平台、基础设施以及持续交付
程序，一个是
CPU
密集型，而另一个是内存密集型，这样，就不会“浪费”（或者因浪
费而被收费）相应的资源了。
PaaS
的好处
一旦你掌握了在
PaaS
平台上部署的核心原则（说实话，使用每项新技术都需要学习一
些新的知识），你的工作就会变得更加高效，并且这些知识可以直接应用在下一个
PaaS
项目上。这会（可能大幅）提升开发人员的生产力。如果你使用的是基于开放标准的
PaaS
，例如
Cloud Foundry
，还可以在多个基础设施上来运维
PaaS
，例如，同时使用企
业内部的
Cloud Foundry
和公有云上的
Pivotal Cloud Foundry
和
IBM Bluemix
。从一个
基础设施
/
供应商迁移到另一个基础设施
/
供应商不会对开发人员产生太大的影响，因
为平台已经提供了所有的核心抽象。
此外，如果你的团队决定使用托管的
PaaS
产品，那么就减少了运行平台、维护以及给
底层基础设施打补丁的运维负担，从而给那些更重要的开发工作提供更多时间！
CI/CD
和
PaaS
我们很自然地会想到，对
PaaS
环境中的应用程序实施持续交付，通常也没有其他的选择。
部署应用程序的唯一方法是搭建一个构建管道。
以下列表突出显示了在
PaaS
上实施
CD
时，应该优先去做的几件事情 ：
y
专注于搭建一个
CD
管道，将应用程序（甚至只是为了验证一个概念原型）从本
地开发环境交付给生产环境。这将暴露出在使用
PaaS
过程中的任何技术或组织
问题。
y
在版本控制系统中存储所有
PaaS
和应用程序的配置和元数据 ...
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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.