Why the Internet Needs Millions of DNS Servers

Описание: Everyone knows that DNS maps domain names to IP addresses, but what's not understood is just how much you rely on it every time you make a request on the internet.

DNS was created in the 1980s, so it's amazing it still works reliably today to lookup any of 350 million domain names. It's unique design uses millions of "nameservers" across the internet, making DNS so fast and resilient that most users don't know it's there.

Developers who understand the elaborate, but misunderstood, domain name query process have the edge in designing better software, troubleshooting, and staying up-to-date as the internet evolves.

In this video you'll learn step-by-step how DNS looks up a domain name, see some surprising quirks of it's decades old design, and importantly learn tools you can use yourself to interact with DNS.

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0:00 More than just converting names to IP addresses
1:20 A distributed database built in the 80s
5:08 The elaborate hunt for a domain name
8:15 How DNS was hacked for the 21st century

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