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A comment on Datapath.io: Provider-Independent Elastic IP Addresses. Parent comment

Re:Datapath.io: Provider-Independent Elastic IP Addresses by sspies on Thursday January 29, 2015 @02:59AM (#8964884)
You cannot do graceful failovers with Route 53. This is, because DNS is a system of many dependend caching layers and the TTL value is not realiable.
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Re:Datapath.io: Provider-Independent Elastic IP Addresses by moe on Thursday January 29, 2015 @03:08AM (#8964907)
the TTL value is not realiable.

How is the TTL not reliable?

In my personal experience DNS cut-overs have never been a problem. Is there any major OS or ISP doing DNS wrong?

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Re:Datapath.io: Provider-Independent Elastic IP Addresses by sspies on Thursday January 29, 2015 @03:10AM (#8964916)
We have seen providers set the TTL value to 300 seconds no matter what. Chrome has been caching names forever while running...just two examples
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