TLDFYI

TTL (Time To Live)

TTL is a value in [[dns|DNS]] records specifying how long (in seconds) a [[dns-cache|cached]] response remains valid. Lower TTLs ensure faster propagation of DNS changes but increase query load on [[authoritative-dns|authoritative servers]].

Example

A TTL of 300 (5 minutes) means DNS changes propagate quickly; a TTL of 86400 (24 hours) reduces server load but delays updates.

Referenced in Guides

Domain Basics

How DNS Works: The Internet's Phone Book

 Domain Basics

Domain Registration Terms Every Owner Should Know

 DNS Configuration

Setting Up DNS for Your Domain

 DNS Configuration

A Record vs CNAME: When to Use Each

 DNS Configuration

MX Records: Setting Up Email for Your Domain

 DNS Configuration

Understanding DNS Propagation

 DNS Configuration

Pointing Your Domain to Web Hosting

 DNS Configuration

DNS TTL: Choosing the Right Value

 Email & Hosting Setup

Custom Email with Your Domain: Complete Setup Guide

 Email & Hosting Setup

Google Workspace Email: Domain Configuration

 Email & Hosting Setup

Microsoft 365 Email: Domain Setup Guide

 Email & Hosting Setup

MX Records Deep Dive: Email Routing Explained

 Email & Hosting Setup

Connecting Your Domain to Web Hosting

 Email & Hosting Setup

Migrating Email to a New Domain

 Email & Hosting Setup

Troubleshooting Email Delivery Issues

 Advanced DNS & Technical

DNSSEC Deep Dive: Signing, Validation, and Troubleshooting

 Advanced DNS & Technical

DNS over HTTPS (DoH): How It Works

 Advanced DNS & Technical

Zone Files: Structure and Management

 Advanced DNS & Technical

Anycast DNS: How Global DNS Networks Work

 Advanced DNS & Technical

DNS Failover and Load Balancing