This is a meaty one if you've never prepped frontend system design specifically.
Start by clarifying requirements and constraints, then outline a high-level component architecture before diving into specific frontend challenges like rendering, state management, and performance. Focus on trade-offs and justify your decisions based on the context of a large-scale application like Google Calendar.
Pro tip: Emphasize how you would handle real-time updates and offline support, as these are critical for a calendar app and demonstrate deep understanding of frontend complexities. Also, discuss how you would structure the codebase for maintainability and scalability.
Ask questions to understand the expected features, scale, and constraints. For example, is it a full-fledged calendar or a simplified version? What are the key user interactions?
Outline the main components: views (month, week, day), state management, data fetching, and synchronization. Consider using a component-based architecture with a central store.
Detail how components interact: event rendering, drag-and-drop, recurring events, and time zone handling. Explain how state is managed and updated efficiently.
Discuss techniques like virtualization for large event lists, memoization, lazy loading, and optimistic UI updates to ensure smooth performance.
Cover offline support, conflict resolution, real-time collaboration, and accessibility. Explain trade-offs between different approaches (e.g., REST vs. WebSockets).
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.