---
id: "dns-caching"
kind: "glossary-term"
title: "DNS caching"
language: "en"
category: "DNS and technical foundations"
updated: "2026-10-04T14:01:23Z"
canonical: "https://tldlog.com/glossary/dns-caching/"
translations:
  es: "https://tldlog.com/es/glosario/almacenamiento-cache-dns/"
  de: "https://tldlog.com/de/glossar/dns-caching/"
  fr: "https://tldlog.com/fr/glossaire/mise-cache-dns/"
  it: "https://tldlog.com/it/glossario/caching-dns/"
  pt-BR: "https://tldlog.com/pt/glossario/cache-dns/"
  ru: "https://tldlog.com/ru/glossariy/keshirovanie-dns/"
  zh-Hans: "https://tldlog.com/zh/cihui/dns-huancun/"
---

# DNS caching

The practice of storing a DNS answer for a while so it does not have to be looked up again. Resolvers, operating systems and browsers all do it. Each record's TTL says how long it may be kept, which is why DNS changes are not seen everywhere at once.

## related terms

- [TTL](https://tldlog.com/glossary/ttl/)
- [resolver](https://tldlog.com/glossary/resolver/)
- [negative caching](https://tldlog.com/glossary/negative-caching/)
- [DNS propagation](https://tldlog.com/glossary/dns-propagation/)
- [stub resolver](https://tldlog.com/glossary/stub-resolver/)