Thanks. But note that the post on "What Happens When You Enter Google.com" is several years out-of-date. It describes the classic TCP-TLS protocol, but since about 2020, Chromium-based browsers (and now all the big ones) default to HTTP/3 aka QUIC and only back-off to TCP if there's a problem. HTTP/3 is much faster to start up, doesn't hit delays so often, deals better with switching between Wi-Fi and mobile, etc.
Really solid breakdown of the browser journey here. The layered cache check before any network traffic even happens is something I wish more devs understood when debugging latency issues. I've personally had sessions where stale DNS cache was the culprit and it took me way too long to figure that out becuase I was looking at the wrong layer. The troubleshooting flow graphic is super helpfull for systematically ruling things out.
Awesome breakdown of what happens behind the scenes when you hit Enter on Google — the DNS, TCP/TLS handshake, and rendering steps are explained clearly in simple terms! 🚀 Thanks for making browsing internals so understandable.
Thanks. But note that the post on "What Happens When You Enter Google.com" is several years out-of-date. It describes the classic TCP-TLS protocol, but since about 2020, Chromium-based browsers (and now all the big ones) default to HTTP/3 aka QUIC and only back-off to TCP if there's a problem. HTTP/3 is much faster to start up, doesn't hit delays so often, deals better with switching between Wi-Fi and mobile, etc.
Really solid breakdown of the browser journey here. The layered cache check before any network traffic even happens is something I wish more devs understood when debugging latency issues. I've personally had sessions where stale DNS cache was the culprit and it took me way too long to figure that out becuase I was looking at the wrong layer. The troubleshooting flow graphic is super helpfull for systematically ruling things out.
The video of AI Agents is very good. clearly explained the process.
Awesome breakdown of what happens behind the scenes when you hit Enter on Google — the DNS, TCP/TLS handshake, and rendering steps are explained clearly in simple terms! 🚀 Thanks for making browsing internals so understandable.