https://www.pistack.xyz/tags/unbound/ Recent content in Unbound on Pi Stack Hugo en-us Mon, 11 May 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-05-11-self-hosted-dns-ttl-optimization-cache-tuning-unbound-powerdns-knot-guide/ Mon, 11 May 2026 00:00:00 +0000 https://www.pistack.xyz/posts/2026-05-11-self-hosted-dns-ttl-optimization-cache-tuning-unbound-powerdns-knot-guide/ <p>DNS Time-To-Live (TTL) values determine how long recursive resolvers cache query results. Getting TTL values right is one of the most impactful yet overlooked aspects of DNS infrastructure optimization. Too short, and you generate excessive upstream queries; too long, and clients receive stale data when records change.</p>