@kodekloud: How DNS Works Step by Step Many people assume DNS is a single massive database containing every website's IP address, but it is actually a global distributed hierarchy. When you type google.com, your computer first checks your browser's cache and your operating system's shared cache. If neither knows the address, your computer asks a recursive resolver provided by your internet provider. To locate an unknown domain, this resolver queries the Root servers at the top of the internet, which point it to the servers running the .com registry, which then redirect the request directly to Google's authoritative name server. Google's authoritative server holds the official records and hands back the exact IP address, allowing your browser to finally start its connection. Although querying multiple servers for a single website sounds slow, aggressive caching at every single layer ensures your resolver rarely needs to start from the top, resolving most web lookups in just a few milliseconds. If this breakdown helped, hit subscribe and follow for more system design deep dives! 🔔 #SystemDesign #Networking #SoftwareEngineering #TechExplained #WebDevelopment #CodingForBeginners

KodeKloud

Open In TikTok:

Region: SG

Monday 19 October 2026 01:00:15 GMT