为什么更新域名的域名服务器需要这么长时间？ [英] Why does updating a domain's nameservers take so long?
问题描述
当我更改域名（一个点com）名称服务器时，最多可能需要2天。
我知道这是通常的，但为什么呢？
When I change my domain's (a dot com) nameservers it can take up to 2 days.
I know that that's usual, but WHY is that?
只是好奇，因为我的webhosting下了，我必须等待，因为我更改了名称服务器，为什么？
Just curious because my webhosting went down and I have to wait now because I changed nameservers, why?
编辑：
做了一些小小的研究，我的webhosting说最多可能需要24小时。
好的，我知道大概是在24-48小时之内，但是它是可以接受的只有24小时。
无论如何，我发现这篇文章： http：/ /www.tech-faq.com/how-to-flush-dns.html
它说你可以使用ipconfig blabla刷新DNS，也已经知道了。 >
但是值得注意的是这是站在第二段：
Did some little research and my webhosting says it can MAXIMUM take up to 24 hours.
Ok, I knew it was around 24 - 48 hours, but it is apperently only 24 hours.
Anyways, I found this article: http://www.tech-faq.com/how-to-flush-dns.html
And it says that you can flush DNS with ipconfig blabla, also already knew that.
But what is remarkable is that this is standing at the second paragraph:
MaxCacheTtl表示DNS查找的最大时间％u2019s结果将被缓存。默认值为86,400秒。如果此值设置为1，DNS条目将仅被缓存一秒钟。
The MaxCacheTtl represents the maximum time that a DNS lookup%u2019s results will be cached for. The default value is 86,400 seconds. If this value is set to 1, DNS entries will only be cached for a single second.
现在，您的计算器并输入：86,400 / 60/60 = TADAH！ ！ 24（小时）
我还没有尝试过，因为我的注册表中没有注册密钥：S
Now take your calculator and type in: 86,400 / 60 / 60 = TADAH!! 24 (hours)
I haven't tried it yet because the registery key wasn't present in my registery :S
推荐答案
当您更改名称服务器时，您必须确保旧的名称服务器还包含新信息，否则某些解析程序将不会注意到 .com 区域已更改。
When you change your nameservers you have to ensure that the old nameservers also contain the new information, otherwise some resolvers won't notice that the delegation in the .com zone has changed.
For more information see https://serverfault.com/questions/322490/what-is-the-correct-behaviour-when-nameservers-change/322524#322524
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