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by imbriaco
4617 days ago
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Very few resolvers break DNS TTLs in that way anymore. Google certainly honors TTLs down to at least 30 seconds. I'm not aware of any major ISPs that get this wrong anymore either. This hasn't been a significant problem in years. When I execute a DNS change on a record with a 30 second TTL, I expect to see 95+% of the traffic move within a couple of minutes. The things that tend to get it wrong these days are applications that don't honor the TTL instead of resolvers, but browsers generally get it right. |
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