Blog

You've read "Node.js is single-threaded and non-blocking." Fine. But that sentence raises more questions than it answers. If it's single-threaded, who's doing the file I/O while your JavaScript runs?

"Our database is highly available" means four different things, and they protect against four different failures. A ladder for forcing that conversation to be specific — plus why the money most teams spend on availability goes to the failure modes they face least.

Kafka is a distributed commit log, not a message queue. Segments on disk, the ISR, the KRaft controller quorum and zero-copy fetches — and how each one explains a config option you've had to set.

Caddy gives you automatic HTTPS and a 4-line config. Nginx gives you raw throughput and a 25-year ecosystem. Here's when each one is the right call.