alt Hacker NewsNo it doesn't. DNS breaks as soon as TTLs run out. It's your choice to set them so low that stuff breaks immediately.
Replies
__float • today at 3:48 AM
What do you recommend then? DNS doesn't usually change that often, but if you mess it up when it does, you're in for some pain if TTLs are high!
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ale42 • today at 9:11 AM
This assumes that the host name you want has been recently queried. If it's not cached, good luck...
Unfortunately you can't set DNS TTL arbitrarily high (or low) without some resolvers ignoring your suggestion and using arbitrary values.