# recursive resolver

Published articles for recursive resolver.

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## One or two nameservers?

DevFeed: [One or two nameservers?](<https://devfeed.tech/articles/one-or-two-nameservers-26233.md>)

Original publisher: [Read original article](<https://blog.apnic.net/2026/09/15/one-or-two-nameservers/>)

Author: Geoff Huston

Published: 2026-09-15T06:01:49Z

Content type: article

Language: en

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

Topics: [Internet](<https://devfeed.tech/topics/internet.md>), [Query (disambiguation)](<https://devfeed.tech/topics/query.md>), [Server](<https://devfeed.tech/topics/server.md>), [Caching](<https://devfeed.tech/topics/caching.md>)

Tags: [2026](<https://devfeed.tech/tags/2026.md>), [africa](<https://devfeed.tech/tags/africa.md>), [article](<https://devfeed.tech/tags/article.md>), [china](<https://devfeed.tech/tags/china.md>), [dns](<https://devfeed.tech/tags/dns.md>), [europe](<https://devfeed.tech/tags/europe.md>), [experiment](<https://devfeed.tech/tags/experiment.md>), [india](<https://devfeed.tech/tags/india.md>), [internet](<https://devfeed.tech/tags/internet.md>), [ipv4](<https://devfeed.tech/tags/ipv4.md>), [ipv6](<https://devfeed.tech/tags/ipv6.md>), [measurement](<https://devfeed.tech/tags/measurement.md>), [measurements](<https://devfeed.tech/tags/measurements.md>), [recursive-resolver](<https://devfeed.tech/tags/recursive-resolver.md>), [repeat](<https://devfeed.tech/tags/repeat.md>), [responses](<https://devfeed.tech/tags/responses.md>), [server](<https://devfeed.tech/tags/server.md>), [tech-matters](<https://devfeed.tech/tags/tech-matters.md>)

### AI overview

This article reports an experiment testing whether serving a DNS zone with two authoritative dual-stack nameservers changes repeated queries. Compared with one nameserver, two nameservers increased the single-query completion rate from 58% to 71% and reduced the average queries per test from 3.43 to 2.57.

### Source excerpt

Do multiple dual-stack nameservers increase or decrease repeat DNS queries? The results of this experiment were a complete surprise.

## 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.

## 20 Networking Concepts Explained in 15 Minutes

DevFeed: [20 Networking Concepts Explained in 15 Minutes](<https://devfeed.tech/articles/20-networking-concepts-explained-in-15-minutes-33561.md>)

Original publisher: [Read original article](<https://blog.algomaster.io/p/20-networking-concepts-explained>)

Author: Ashish Pratap Singh

Published: 2026-06-02T05:28:43Z

Content type: tutorial

Language: en

Sources: [AlgoMaster Newsletter](<https://devfeed.tech/sources/algomaster-newsletter.md>)

Topics: [networking](<https://devfeed.tech/topics/networking.md>), [Networks](<https://devfeed.tech/topics/networks.md>), [domain](<https://devfeed.tech/topics/domain.md>), [Internet](<https://devfeed.tech/topics/internet.md>), [browser](<https://devfeed.tech/topics/browser.md>), [HTTP](<https://devfeed.tech/topics/http.md>)

Tags: [browser](<https://devfeed.tech/tags/browser.md>), [concepts](<https://devfeed.tech/tags/concepts.md>), [dns](<https://devfeed.tech/tags/dns.md>), [domain](<https://devfeed.tech/tags/domain.md>), [http](<https://devfeed.tech/tags/http.md>), [https](<https://devfeed.tech/tags/https.md>), [ipv4](<https://devfeed.tech/tags/ipv4.md>), [ipv6](<https://devfeed.tech/tags/ipv6.md>), [mac-address](<https://devfeed.tech/tags/mac-address.md>), [network](<https://devfeed.tech/tags/network.md>), [networking](<https://devfeed.tech/tags/networking.md>), [postgresql](<https://devfeed.tech/tags/postgresql.md>), [recursive-resolver](<https://devfeed.tech/tags/recursive-resolver.md>), [redis](<https://devfeed.tech/tags/redis.md>), [ssh](<https://devfeed.tech/tags/ssh.md>), [wi-fi](<https://devfeed.tech/tags/wi-fi.md>)

### AI overview

A tutorial introducing core networking concepts, including IP addressing, DNS resolution, ports, MAC addresses, and ARP, with examples involving browsers, routers, servers, SSH, HTTP, PostgreSQL, and Redis.

### Source excerpt

Networking can feel overwhelming, but a small set of concepts carries most of the weight in interviews and real-world systems.