Change IP of A Record in 1 Minute

I want to be able to change the IP that my domain name resolves to in one minute or less.  The A record for my domain name is set to ab IP address with a TTL of 60.  If I changed the IP address, would everybody accessing the domain see the domain at the new site within a minute, or could it take longer for the change to propagate?  Is there a better way to be able to QUICLY change where the IP address resolves?
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PapertripConnect With a Mentor Commented:
If the TTL of the existing record is 60, then the longest that record can stay cached is 60 seconds, provided the client is using an rfc-compliant resolver.

60 seconds is pretty harsh as far as 'being a good internet citizen' is concerned.  I would only change it something that low in preparation for a change, then revert it to something like 300 at the very least.
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