August 2019
Beginner to intermediate
232 pages
3h 50m
Chinese
Content preview from Web容量规划之美
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11
第1章
容量规划的目标、
问题和过程
本章旨在帮助你收集和使用接下来的章节所介绍的丰富的工具和技术。如果你没
掌握本章中介绍的概念，阅读本书的其余部分就像在广阔的海洋中，不知如何使
用罗盘、六分仪或
GPS
装置从而永远绕圈子。
背景
本书的第一版是在公有云即将流行的时候编写的。今天，像亚马逊的公有云服务
AWS
和微软的公有云服务
Azure
给企业带来了
100
亿美元的商业价值。
2016
年
4
月，
IDC
预测云上
IT
基础设施的支出在
2020
年增长到
578
亿美元。此外，开发和运
维的状况发生了翻天覆地的变化。例如，从单一应用程序的面向服务的架构（
SOA
）
过渡到面向容器（例如
Docker
、
CoreOS
、
Rocket
和
Open Container Initiative
）的应用。
同样，另一个蓄势待发的方向是无服务架构，按照
Martin Fowler
的说法：
无服务架构是指在很大程度上依赖于第三方服务的应用程序
[
称为后端的
服务或
FAAS
（功能即服务）
]
，或自定义代码运行在短暂的容器中（作为
一个服务或
FaaS
）。其中最著名的供应商的主机是目前
AWS Lambda
。通
过使用这些想法，并移动多行为的前端，这样的架构不再需要传统的“永远”
依赖后端的应用服务器系统。视情况而定，这样的系统可以显著降低运营
成本和复杂性，会以供应商的依赖性和支持服务的不成熟为代价。
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
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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.