After years of meaning to start one, here it is. I’m João — a Senior Software Engineer on the Architecture & SRE team at Zwift, based in Rio de Janeiro. My day-to-day is a mix of platform reliability, incident response, observability, and the kind of slow, unglamorous work that keeps production from catching fire. Why a blog? The honest answer: I learn best by writing. There’s something about forcing an idea into sentences that reveals whether you actually understand it or were just pattern-matching on vibes. I’ve been keeping private notes and post-mortems for years — this is me making some of that public. ...