Build a Real-Time Event Feed Dashboard
Last updated: July 24, 2026
Quick Overview
The candidate is asked to design a real-time event feed dashboard that displays data updates as they occur. This involves considering the architecture, data flow, and user interface aspects of the dashboard.
Citadel
July 24, 202612
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The candidate is asked to design a real-time event feed dashboard that displays data updates as they occur. This involves considering the architecture, data flow, and user interface aspects of the dashboard.
This question is typically asked during the technical screen to evaluate the candidate's ability to design user interfaces that handle real-time data efficiently. The interviewer is looking for a clear understanding of frontend technologies, data handling, and user experience considerations. The ability to articulate design choices and justify them is crucial in this round.
What the Interviewer Expects
- Explain the overall architecture for the real-time event feed.
- Discuss the technologies and frameworks that would be used.
- Describe how data will be fetched and updated in real-time.
- Consider user experience aspects such as responsiveness and usability.
- Identify potential challenges and how to address them.
Key Topics to Cover
How to Approach This
- Apply SOLID principles. Single Responsibility makes code testable, Open/Closed makes it extensible.
- Choose data structures based on access patterns, not familiarity.
- Prefer immutable data and message passing over shared mutable state for concurrency.
- Design APIs with RESTful conventions, versioning, meaningful errors, and pagination from day one.
Possible Follow-up Questions
- What technologies would you choose for the backend to support this dashboard?
- How would you handle data consistency in a real-time environment?
- Can you explain how you would optimize the dashboard for performance?
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Practice System Design ProblemsSample Answer
Requirements
To build a real-time event feed dashboard, we need to define the core requirements. The dashboard should display events as they occur, allowing users to filter and sort these events based on various c...
High-Level Design
The architecture will consist of a frontend application that communicates with a backend service via WebSockets for real-time updates. The frontend will be built using React for its component-based ar...
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