Domain Name System Demystified for Builders
Domain Name System Demystified for Builders The Domain Name System (DNS) is the Internet’s phone book. It lets browsers reach apps with names like example.com instead of a string of numbers. For builders, DNS is a quiet ally that affects reliability, speed, and how you scale services. Understanding a few actors helps. You have recursive resolvers (the helpers your device talks to), root servers, top‑level domain (TLD) servers, and authoritative servers for each zone. Each piece answers a piece of the puzzle, moving from a name to a set of numbers that a computer can use. ...