Understanding TCP BBR congestion control
BBR models the network instead of reacting to packet loss. Here's how it works, when it helps, and how to enable it safely on a Linux server…
Notes on systems & networks
I'm Alex, a backend engineer working on Linux infrastructure. I write about TCP/IP, performance tuning, self-hosting and the occasional debugging war story.
Recent posts
Why I self-host my own tools
Running your own monitoring, media and file services takes an afternoon and pays back every week. A short tour of my current homelab setup…
Debugging a slow TLS handshake, step by step
A 900 ms handshake turned out to be a missing OCSP staple plus an unhappy middlebox. The checklist I now run through first…