url - What does the number after a www[number] uri mean?

Question

what does the number after a www[number] uri mean? Does it have any to do with a multi-site setup?

Example:

http://www2.macleans.ca/2011/09/15/poor-little-rich-m-b-a-s/ http://www1.carleton.ca/about/

What is it's significance?

Answer 1

在 URL 中，数字即 www2 是指用于标识域内一系列密切相关的网站的主机名。此类网站是用于服务器负载平衡的“镜子”。在某些情况下，特定的主机名会被隐藏，从而造成用户正在查看“www”子域的外观。