Jarrett Meyer writes about software architecture, ML engineering, and using the right tool — not the trendy one.https://jarrettmeyer.com/https://jarrettmeyer.com/articles/discord-killer/https://jarrettmeyer.com/articles/discord-killer/You didn't build the next Discord. You built the right tool for your actual problem. Those aren't the same thing.Thu, 28 May 2026 00:00:00 GMThttps://jarrettmeyer.com/articles/every-database-textbook-is-wrong/https://jarrettmeyer.com/articles/every-database-textbook-is-wrong/Your professor's favorite schema violates the rules it was supposed to teach you. You've been copying it into production ever since.Fri, 17 Apr 2026 00:00:00 GMThttps://jarrettmeyer.com/articles/stop-doing-olap-in-your-oltp-database/https://jarrettmeyer.com/articles/stop-doing-olap-in-your-oltp-database/You tracked history in your operational table because it felt responsible. Now every query is a temporal lookup and you can't figure out why everything is slow.Mon, 18 May 2026 00:00:00 GMThttps://jarrettmeyer.com/articles/success-is-not-an-f1-metric/https://jarrettmeyer.com/articles/success-is-not-an-f1-metric/Data scientists can talk for days about model design, hyperparameters, and precision-recall tradeoffs. Ask them what changed for a customer and watch the room go quiet.Fri, 01 May 2026 00:00:00 GMThttps://jarrettmeyer.com/articles/the-simplest-thing/https://jarrettmeyer.com/articles/the-simplest-thing/Claude's system prompt says 'try the simplest approach first.' That's good advice for a single decision. It's terrible advice for a project. What happens when nobody's left to know the difference?Wed, 08 Apr 2026 00:00:00 GMT