# TTL in DNS

Published articles for TTL in DNS.

This is one page of public article previews, not the complete archive. Follow Next page to continue. Summaries are not the original full articles.

## How DNS Works for DevOps Engineers

DevFeed: [How DNS Works for DevOps Engineers](<https://devfeed.tech/articles/how-dns-works-for-devops-engineers-17483.md>)

Original publisher: [Read original article](<https://kodekloud.com/blog/how-dns-works-for-devops-engineers/>)

Author: Pramodh Kumar M

Published: 2026-07-31T17:00:06Z

Content type: tutorial

Language: en

Sources: [Kubernetes - KodeKloud Blog | DevOps, Cloud, Kubernetes, AI Tutorials & More](<https://devfeed.tech/sources/kubernetes-kodekloud-blog-devops-cloud-kubernetes-ai-tutorials-more.md>)

Topics: [DevOps](<https://devfeed.tech/topics/devops.md>), [Internet](<https://devfeed.tech/topics/internet.md>), [Kubernetes](<https://devfeed.tech/topics/kubernetes.md>), [Security](<https://devfeed.tech/topics/security.md>)

Tags: [1-1-1-1](<https://devfeed.tech/tags/1-1-1-1.md>), [authoritative-name-server](<https://devfeed.tech/tags/authoritative-name-server.md>), [cloudflare](<https://devfeed.tech/tags/cloudflare.md>), [cname-vs-a-record](<https://devfeed.tech/tags/cname-vs-a-record.md>), [coredns-kubernetes](<https://devfeed.tech/tags/coredns-kubernetes.md>), [devops](<https://devfeed.tech/tags/devops.md>), [dig-command-examples](<https://devfeed.tech/tags/dig-command-examples.md>), [dns](<https://devfeed.tech/tags/dns.md>), [dns-for-devops-engineers](<https://devfeed.tech/tags/dns-for-devops-engineers.md>), [dns-record-types](<https://devfeed.tech/tags/dns-record-types.md>), [dns-resolution-process](<https://devfeed.tech/tags/dns-resolution-process.md>), [dns-troubleshooting](<https://devfeed.tech/tags/dns-troubleshooting.md>), [guide](<https://devfeed.tech/tags/guide.md>), [health-checks](<https://devfeed.tech/tags/health-checks.md>), [how-dns-works](<https://devfeed.tech/tags/how-dns-works.md>), [infrastructure](<https://devfeed.tech/tags/infrastructure.md>), [kubernetes](<https://devfeed.tech/tags/kubernetes.md>), [linux](<https://devfeed.tech/tags/linux.md>), [lookup](<https://devfeed.tech/tags/lookup.md>), [networking](<https://devfeed.tech/tags/networking.md>), [outage](<https://devfeed.tech/tags/outage.md>), [production](<https://devfeed.tech/tags/production.md>), [recursive-resolver](<https://devfeed.tech/tags/recursive-resolver.md>), [security](<https://devfeed.tech/tags/security.md>), [troubleshooting](<https://devfeed.tech/tags/troubleshooting.md>), [ttl-in-dns](<https://devfeed.tech/tags/ttl-in-dns.md>), [web](<https://devfeed.tech/tags/web.md>)

### AI overview

A practical guide to DNS for DevOps engineers, tracing a lookup from a laptop through recursive, root, TLD, and authoritative servers. It explains TTL, caching, Kubernetes DNS and ndots, troubleshooting with command-line tools, and the security risk of dangling records.

### Source excerpt

Almost every engineer uses DNS a hundred times a day and has never been taught how it works. This guide follows a single lookup from your laptop to the answer, then shows you exactly where it breaks in production.