Hacker News Reader

> Administrators wanting their changes to be applied immediately, because it may require less planning work.

Why is this not valid?

But 5 minutes should be fine? It surprised me that so many has 1 second or 20 second TTL.

If I need to get a web service up and I can save 4 minutes by setting a low TTL when I configure my DNS record why wouldn't I?

Because you're pushing the cost on to someone else.

If your DNS hosting provider charged you per query (some do, especially when adding features like health checks & load balancing), then it might make a big difference.

Valid migration plan should be able to handle it without very short TTL.

Reply on news.ycombinator.com