Book: Event-Driven Architecture Pocket Guide My project: Hermes IDE | GitHub — an IDE for developers who ship with Claude Code and other AI coding tools Me: xgabriel.com | GitHub You opened a pull request that splits your Order entity into OrderWriteModel and OrderReadModel . The reviewer asks why. You answer: "CQRS." The reviewer asks why again, and this time the answer takes 40 minutes, three Miro diagrams, and an apology to the standup that started without you. You have probably seen the version that goes wrong. A team ships CQRS into a 12-table CRUD app because someone read about it. Eighteen months later they have two databases that disagree, a projection rebuild script nobody trusts, and a "consistency dashboard" with three orange tiles that have been orange since launch. The system works. It works the same way the pre-CQRS version worked, except now there are two of everything. Greg Young (who coined the term in 2010 ) was clear from the start: CQRS is a pattern, not an architecture.…