Learn about DNS TTL (Time-to-Live)! 🌐⏱️ This video explains what TTL is, how it works in DNS records, and why it’s crucial for efficient web performance.
What you’ll learn:
– What is TTL and its role in DNS resolution
– How TTL affects caching and website loading speeds
– A step-by-step breakdown of a DNS record’s lifecycle:
– Record Configuration
– Authoritative Response
– Caching at the Resolver
– TTL Countdown
– Expiration and Cache Refresh
– How resolvers use TTL to determine whether to serve cached data or request a fresh record from the authoritative server.
We’ll break down RFC 791 and RFC 1035 to understand the technical details in plain language. Whether you’re a network engineer, web developer, or just curious about how the internet works, this video will give you a solid understanding of DNS TTL.
Why is TTL important?
TTL helps balance DNS propagation speed with caching efficiency. Setting the right TTL value can improve website loading times and reduce the load on your DNS servers.
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How DNS works: https://youtu.be/3eqEl6scOvw
Differences among A, CNAME, ALIAS, and URL records?: https://youtu.be/mn07RUxAJRA
What is a Name Server?: https://youtu.be/2WdF1zT01HY
What is DNSimple? https://youtu.be/0Kt5yAWWwAI
How do a Records work?: https://youtu.be/nJ53QG-gq8o
What is a AAAA record? https://youtu.be/4SGgO5MSQLg
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