It doesn't cover everything, but I liked "High Performance Browser Networking" by Ilya Grigorik. It was very straightforward, and focused on what's relevant tod

It doesn't cover everything, but I liked "High Performance Browser Networking" by Ilya Grigorik. It was very straightforward, and focused on what's relevant today in the browser. However, that "today" was 11 years ago already (huh, time flies) and didn't cover what's relevant in 2024, like practical issues of dealing with CDN. Also, it really was browser-focused, so there wasn't anything on how VPNs work and such.