How DNS Actually Works: Resolution Hierarchy, Caching, and Production Failure Mo

<p>Most people don’t think about DNS until something breaks.</p> <p>A founder launches a new website and suddenly email stops working.</p> <p>A developer migrates infrastructure

<p>You type "google.com" into your browser and a webpage appears. Somewhere between your keystrokes and the pixels loading, a system you've never thought about did something

<p>Every time you type <code>google.com</code> into a browser, something remarkable happens in milliseconds — a global, distributed lookup system translates that human-readable

<p><em>Originally published on <a href="https://tamiz.pro/insights/replacing-dns-resolver-in-production" rel="noopener noreferrer">tamiz.pro</a>.</em></p> <h2> Introduction </h2>

<p>A cafe owner in Salthill rang me last month in a panic. "My website's down." I checked on my phone — loaded fine. She checked on hers — nothing. Her husband's laptop? Also

<h1><span><span>What ACTUALLY Happens When You Type a URL google.com</span></span></h1> <span><span><br /> <p>"If you’ve ever interviewed for a software engineering role, you’ve