January 2021
Intermediate to advanced
505 pages
9h 45m
Chinese
Content preview from PHP编程：第4版
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344
｜
第
15
章
应用技术
数据库。稍微变动一下，这些服务器中的某个或全部就可以很好地分离到多台服务器上，
但要看怎么做，
如果你的数据库有些可缓存的数据并且数据库读取频繁，这是一个很好
的方法。
图15-2：组合在一起
每台
Apache
服务器都有它自己的只读
MySQL
数据库，所以所有从
PHP
脚本读取的请
求都可以通过
UNIX-domain
本地套接字连接到专门的
MySQL
实例上。只要你需要，
可
以在此框架下添加更多这样的
Apache/PHP/MySQL
服务器。
PHP
应用的任何写数据库操
作都将通过传输控制协议（
TCP
）套接字连接到主数据库服务器。
下一步
下一章，我们将深入研究如何使用
PHP
开发和部署
Web
服务。
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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.