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Stop using ridiculously low DNS TTLs | APNIC Blog
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this post was submitted on 30 Jan 2026
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I have a reasonably latent connection and using pihole and an anycast upstream resolver is noticeably slow. It falls out of pihole cache so freaking fast with these low TTL. I have set up unbound with aggressive caching prefetch and if I recall correctly pihole has a toggle to serve expired. Serving expired in unbound, before pihole, breaks stuff that rotates IP fast.