Problems with low DNS TTLs

Re:Problems with low DNS TTLs by cstejerean on Monday March 29, 2021 @12:25PM (#26624209)

I think load balancing in that argument happens via “clients picks a random IP” and failover happens via “transparently try another if they can’t connect”.

So that would be both load balancing and failover, why doesn’t the argument hold up?

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Re:Problems with low DNS TTLs by znpy on Monday March 29, 2021 @07:48PM (#26629745)

load balancing is more like you have 5 records, I'll serve 3 of them back to you.

next client comes in, I'll serve three again, possibly different from the three i've served before.

the client doesn't even know that there are two other possible endpoints (unless maybe until the next query).

edit: i just tried running this

    watch dig -t A www.amazon.com @8.8.8.8

and saw the record change from time to time.

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