Deep dives into Elixir, BEAM internals, and distributed systems. Real findings, the reasoning behind them, and practical tools to handle them in your own systems.
libring and delta_crdt show up together in almost every distributed Elixir example, and it's tempting to treat them as one package. They're not. libring answers one question. delta_crdt answers a comp
New connections stop arriving. Everything else looks normal, existing users, CPU, memory, :observer. The obvious fix is ulimit -n. But there are three limits that need to move, and raising only one le
While building an ExchangeMonitor that fetches live exchange rates, load testing revealed a problem: callers were timing out. The GenServer was the bottleneck. It was doing slow HTTP work in the middl
I was digging into BEAM memory internals this week and found something that would have cost me real production pain if I'd hit it in a live system first. Extracting 10 bytes from a 10MB binary. The 10
