3 ms·
> Caches rely on the TTL of records in your zone, or the SOA negative TTL field for negative answers. Sadly the word "should" ought to have appeared in your se
by gumby 2y ago
> Caches rely on the TTL of records in your zone, or the SOA negative TTL field for negative answers.
Sadly the word "should" ought to have appeared in your sentence.
A lot of resolvers ignore the TTL, either because of the number of misconfigured TTL entries (too short), because they resolve a LOT of names and figure they can't afford to keep looking up certain names, or out of sheer orneryness.
I don't update frequently so when I do plan to make updates I adjust my TTL to a short period, wait a few days, then make the updates, then after a week turn the TTL way up again. I've noticed that this is pointless with some big sites.
- fanf2 2y agoThe reason I set my TTLs to 1 hour is to avoid the faff with preparing for a change by fiddling with TTLs. It’s much easier to have a moderate TTL that’s OK for normal use, and not too long to make changes painful.