Tuning Linux TCP congestion control for high-BDP links
How I moved from Cubic to BBR on a long-distance relay and cut tail latency without touching application code.
Latest posts
Self-hosting a private Docker registry with token auth
Setting up a registry behind nginx, adding basic authentication, and keeping image sizes in check with BuildKit.
WireGuard mesh on a mix of VPS and home networks
Lessons learned from building a point-to-site WireGuard mesh that spans cloud regions and a residential NAT.
Monitoring small infra with Prometheus and Grafana
Why I replaced a cloud dashboard with a local Prometheus stack, and which exporters turned out to be worth the RAM.
About DM Notes
This site is a place to dump configuration snippets, benchmark results, and troubleshooting steps from the systems I run. Everything here is written for my future self, but if it helps you too, that is a nice bonus.