In traditional System Design interview prep or architecture planning, we often use physical whiteboards or online drawing tools like Excalidraw. However, once drawn, these diagrams become static, dead assets, unable to link with your codebase or knowledge graph.
With modern IDEs (like Cursor) and their Canvas mode, we can achieve immersive whiteboard deductions.
The IDE Canvas is not just a panel for dragging and dropping lines. Here, each node can mount Markdown documents or specific code snippets.
When faced with a problem like "Design a high-concurrency flash sale system," you can:
API Gateway, Redis Cache, and Message Queue on the whiteboard.After completing the entire architecture design deduction, the nodes on the Canvas are not isolated.
You can use scripts or a one-click export feature to convert the Canvas into an interconnected collection of Markdown files.
API_Gateway.md automatically records related rate-limiting strategies.Redis_Cache.md documents solutions for cache penetration.This method not only deepens your memory of the deduction process but also leaves you with a highly reusable treasure trove of architectural knowledge.