From the course: Managing DNS Essential Training

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Understand Internet DNS

Understand Internet DNS

From the course: Managing DNS Essential Training

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Understand Internet DNS

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- [Voiceover] The first preparation I want you to take in setting up your DNS on the internet is keeping track of your TTLs, or time to lives. This isn't going to affect you as much, at all actually, if you're setting this up for the first time. But if you have previously purchased your domain name, and you have already set up a few, you know, records just because you were playing with stuff and trying to figure things out, if you have set records with a time to live of something really, really long, then whenever you're making changes to your DNS via this interface, those changes could take a really long time to take effect when other devices are trying to access them over the internet. And that's kind of the whole point of this brief video here is I want to talk to you about these time to live numbers and how to control them and how to know what they are. So, I'm in OS X here, right now, and I've just got the OS X default calculator set up here. In the calculator we've got this…

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