Systems & network engineering
Notes from the lower layers
I write about Linux internals, TLS, routing and the unglamorous work of keeping small production systems boring. Roughly one post a month, usually after something broke.
- Notes on measuring latency properly 5 Nov 2026 · 6 min read · networking
- A small backup setup that actually gets tested 27 Oct 2026 · 7 min read · operations
- Serving HTTP/3 without breaking HTTP/1.1 clients 18 Sep 2026 · 8 min read · tlshttp
What I work with
Linux & containersDebian/Ubuntu hardening, systemd units, cgroup limits, OCI images.
NetworkingTCP/QUIC tuning, BGP basics, nftables, packet-level debugging.
TLS & PKIACME automation, certificate lifetimes, ALPN and SNI edge cases.
ObservabilityPrometheus, structured logs, and alerts that page nobody at 3am.
Nothing here is sponsored. If a post was useful and you want to say so, the address on the
contact page reaches me.