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You've joined SeatBook, which sells cinema tickets. When a customer picks seats, those seats are held for ten minutes while they pay — and if payment fails or they close the tab, the seats have to free themselves without anyone intervening. On a Friday release, thousands of people tap the same seat inside the same second.
out of scopePayment gateway · refunds · loyalty · pricing rules · food orders
pnpm dev:api and reload.The canvas below still works, so you can model now and run the review once the service is up.Practice studio
Start with the data model, then layer system context
Use entities and relationships for the real ERD. Add notes, containers, or curated cloud shapes only when they sharpen the story you are architecting.
This scenario runs a full workspace — editor, canvas and results side by side. It needs a laptop or desktop to be usable. Open this page on a bigger screen to start building.