Notes on Systems

Occasional writing on networking, distributed systems and the tools I use.

Recent posts

• 12 March 2026 QUIC in practice: what I learned running it in production
  A few notes on tuning, retransmission behaviour and the surprises we hit.
• 27 February 2026 A short tour of TCP congestion control
  From Reno to BBR — what each algorithm optimises for, and when it matters.
• 08 February 2026 Self-hosting notes, three years in
  What I'd do differently if I started my home lab today.
• 19 January 2026 A gentle DNS primer for developers
  Records, resolvers, caching and the parts that trip people up.

About this site

This is a small personal site. It's built with plain HTML and CSS, hosted on a modest server, and served over HTTPS. No trackers, no analytics, no JavaScript required. Pages are static and cacheable.

You can reach me at hello [at] merispec.duckdns.org. I read everything, but I'm slow to reply.