Have you ever wondered what happens behind the scenes when you type a URL into your browser? Here's a quick rundown of the life of a DNS query in numbered steps:
1. You type a URL into your browser.
2. Your computer sends a DNS query to a DNS resolver, asking for the IP address of the domain.
3. If the resolver has the IP address cached, it returns the result to your computer.
4. If not, the resolver sends a request to the root DNS servers to find the authoritative DNS server for the domain.
5. The authoritative DNS server returns the IP address to the resolver.
6. The resolver caches the IP address and returns it to your computer.
Your computer uses the IP address to connect to the web server and retrieve the content.
Understanding how DNS works is a fundamental part of web development and can help you troubleshoot issues and optimize website performance.
