# 1.1.1.1

Published articles for 1.1.1.1.

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## 1.1.1.1 now supports post-quantum DNSSEC, all 2,420 bytes of it

DevFeed: [1.1.1.1 now supports post-quantum DNSSEC, all 2,420 bytes of it](<https://devfeed.tech/articles/1-1-1-1-now-supports-post-quantum-dnssec-all-2-420-bytes-of-it-117.md>)

Original publisher: [Read original article](<https://blog.cloudflare.com/post-quantum-dnssec-1111/>)

Author: Bas Westerbaan

Published: 2026-09-10T13:00:00Z

Content type: article

Language: en

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

Topics: [Cryptography](<https://devfeed.tech/topics/cryptography.md>)

Tags: [1-1-1-1](<https://devfeed.tech/tags/1-1-1-1.md>), [algorithms](<https://devfeed.tech/tags/algorithms.md>), [cryptography](<https://devfeed.tech/tags/cryptography.md>), [dns](<https://devfeed.tech/tags/dns.md>), [dnssec](<https://devfeed.tech/tags/dnssec.md>), [post-quantum](<https://devfeed.tech/tags/post-quantum.md>), [research](<https://devfeed.tech/tags/research.md>), [security](<https://devfeed.tech/tags/security.md>), [testing](<https://devfeed.tech/tags/testing.md>), [tls](<https://devfeed.tech/tags/tls.md>), [validation](<https://devfeed.tech/tags/validation.md>)

### AI overview

Cloudflare's 1.1.1.1 now validates DNSSEC signatures using the post-quantum ML-DSA-44 algorithm. The article discusses testing oversized DNS responses and preventing downgrade to conventional signatures while retaining compatibility with older resolvers.

### Source excerpt

1.1.1.1 now validates DNSSEC signatures using NIST's post-quantum ML-DSA-44 algorithm. Here is how we manage 2,420-byte signatures and downgrade risks at scale.

## How we saved 100 terabytes of memory by optimizing 1.1.1.1's DNS cache

DevFeed: [How we saved 100 terabytes of memory by optimizing 1.1.1.1's DNS cache](<https://devfeed.tech/articles/how-we-saved-100-terabytes-of-memory-by-optimizing-1-1-1-1-s-dns-cache-114.md>)

Original publisher: [Read original article](<https://blog.cloudflare.com/dns-cache-memory-optimization-1111/>)

Author: Sebastiaan Neuteboom

Published: 2026-08-27T17:02:35Z

Content type: article

Language: en

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

Topics: [Cache](<https://devfeed.tech/topics/cache.md>), [Caching](<https://devfeed.tech/topics/caching.md>), [Cloudflare](<https://devfeed.tech/topics/cloudflare.md>), [Rust](<https://devfeed.tech/topics/rust.md>), [benchmarking](<https://devfeed.tech/topics/benchmarking.md>), [Latency](<https://devfeed.tech/topics/latency.md>), [datacenter](<https://devfeed.tech/topics/datacenter.md>)

Tags: [1-1-1-1](<https://devfeed.tech/tags/1-1-1-1.md>), [benchmarking](<https://devfeed.tech/tags/benchmarking.md>), [cache](<https://devfeed.tech/tags/cache.md>), [cloudflare](<https://devfeed.tech/tags/cloudflare.md>), [data-center](<https://devfeed.tech/tags/data-center.md>), [deep-dive](<https://devfeed.tech/tags/deep-dive.md>), [dns](<https://devfeed.tech/tags/dns.md>), [engineering](<https://devfeed.tech/tags/engineering.md>), [latency](<https://devfeed.tech/tags/latency.md>), [memory](<https://devfeed.tech/tags/memory.md>), [net-maui](<https://devfeed.tech/tags/net-maui.md>), [optimization](<https://devfeed.tech/tags/optimization.md>), [performance](<https://devfeed.tech/tags/performance.md>), [rust](<https://devfeed.tech/tags/rust.md>)

### AI overview

Cloudflare describes five Rust-level changes to the memory layout of Big Pineapple, the platform behind 1.1.1.1 and other DNS services. The changes reduced DNS cache entry size by over 50%, freed roughly 100 terabytes of memory across the fleet, increased insert throughput by 43%, and reduced lookup latency by 19%.

### Source excerpt

Five Rust-level memory optimizations to the DNS cache layout of Big Pineapple cut per-entry memory by 56%, freeing approximately 100 TB of memory across Cloudflare's fleet.

## 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.

## What Happens When You Type a URL? DNS Explained for Developers

DevFeed: [What Happens When You Type a URL? DNS Explained for Developers](<https://devfeed.tech/articles/what-happens-when-you-type-a-url-dns-explained-for-developers-17752.md>)

Original publisher: [Read original article](<https://blog.amigoscode.com/p/what-happens-when-you-type-a-url>)

Author: Nelson Djalo

Published: 2025-05-28T16:05:32Z

Content type: tutorial

Language: en

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

Topics: [Internet](<https://devfeed.tech/topics/internet.md>), [browser](<https://devfeed.tech/topics/browser.md>), [Cache](<https://devfeed.tech/topics/cache.md>), [Cloudflare](<https://devfeed.tech/topics/cloudflare.md>), [1.1.1.1](<https://devfeed.tech/topics/1-1-1-1.md>), [Google](<https://devfeed.tech/topics/google.md>)

Tags: [1-1-1-1](<https://devfeed.tech/tags/1-1-1-1.md>), [browser](<https://devfeed.tech/tags/browser.md>), [cache](<https://devfeed.tech/tags/cache.md>), [cloudflare](<https://devfeed.tech/tags/cloudflare.md>), [debug](<https://devfeed.tech/tags/debug.md>), [developers](<https://devfeed.tech/tags/developers.md>), [dns](<https://devfeed.tech/tags/dns.md>), [google](<https://devfeed.tech/tags/google.md>), [guide](<https://devfeed.tech/tags/guide.md>), [hosting](<https://devfeed.tech/tags/hosting.md>), [how-dns-works](<https://devfeed.tech/tags/how-dns-works.md>), [internet](<https://devfeed.tech/tags/internet.md>), [server](<https://devfeed.tech/tags/server.md>)

### AI overview

This developer guide explains how DNS translates a domain name into an IP address when a URL is entered. It follows the lookup from the browser and local cache through a resolver, root server, TLD server, and authoritative server before the browser connects to the destination server. It also introduces common DNS components, issues, and debugging considerations.

### Source excerpt

Learn how DNS works, step-by-step, from the browser to the server. This Amigoscode guide makes DNS easy to understand for developers.