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You've joined SocialHub. A user can react to a post, change their reaction, or remove it — and the client emits an event for each. Because of retries, events sometimes arrive out of order: the removal occasionally lands before the add it removes. Product wants daily engagement. Support separately needs *"what is this user's reaction on this post right now?"*
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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.