[VoiceOps] DIDWW API DNS Issue

Alex Balashov abalashov at evaristesys.com
Thu Jan 20 20:23:40 EST 2022


Why, back in my day, residential ISPs would ignore your TTLs and cache for 3 days no matter what you did… 

Kids these days. 

— Alex

> On Jan 20, 2022, at 7:54 PM, Peter Beckman <beckman at angryox.com> wrote:
> 
> Please, y'all -- when doing a DNS migration, ensure 1000% that your DNS
> records on your old DNS provider match your DNS records on your new DNS
> provider, and plan your DNS migration early by setting the TTL for your NS
> records at least to 5 minutes (300 seconds) if allowed, 30 seconds if you
> can.
> 
> Assume all caching servers will cache for 5 minutes even if you set it to
> 30 seconds.
> 
> At least that way if things go wrong, your outage horizon is 5 minutes, not
> 1 hour or more!!!

-- 
Alex Balashov | Principal | Evariste Systems LLC

Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
Web: http://www.evaristesys.com/, http://www.csrpswitch.com/



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