# \[Podcast\] DNS cold start

DevFeed: [\[Podcast\] DNS cold start](<https://devfeed.tech/articles/podcast-dns-cold-start-10842.md>)

Original publisher: [Read original article](<https://blog.apnic.net/2026/08/20/podcast-dns-cold-start/>)

Author: George Michaelson

Published: 2026-08-19T20:30:00Z

Content type: article

Language: en

Sources: [APNIC Blog](<https://devfeed.tech/sources/apnic-blog.md>)

Topics: [Caching](<https://devfeed.tech/topics/caching.md>), [Cache](<https://devfeed.tech/topics/cache.md>), [distributed-systems](<https://devfeed.tech/topics/distributed-systems.md>), [Network](<https://devfeed.tech/topics/network.md>), [cpu](<https://devfeed.tech/topics/cpu.md>), [Computer science](<https://devfeed.tech/topics/computer-science.md>)

Tags: [cache](<https://devfeed.tech/tags/cache.md>), [caching](<https://devfeed.tech/tags/caching.md>), [cpu](<https://devfeed.tech/tags/cpu.md>), [data](<https://devfeed.tech/tags/data.md>), [distributed-systems](<https://devfeed.tech/tags/distributed-systems.md>), [dns](<https://devfeed.tech/tags/dns.md>), [network](<https://devfeed.tech/tags/network.md>), [podcast](<https://devfeed.tech/tags/podcast.md>), [tech-matters](<https://devfeed.tech/tags/tech-matters.md>)

## AI overview

A podcast discussion examines DNS behavior during a cold start, when a resolver has no cached data. It explains how caching reduces network delays and explores DNS's hierarchical dependencies, comparing the startup challenge with black-start power generation.

## Source excerpt

Geoff Huston discusses the unexpected behaviours of the DNS when you perform a query after 'cold start' with no cached data.