Design a fault-tolerant Analytics System
Last updated: February 13, 2026
Quick Overview
Design a fault-tolerant analytics system handling millions of requests. Discuss consistency, availability, and performance trade-offs.
Walmart
System Design
Software Engineer
Walmart
February 13, 2026Software Engineer
Onsite
System Design
Easy
716
15
4,035 solved
Design a fault-tolerant analytics system handling millions of requests. Discuss consistency, availability, and performance trade-offs.
How to Approach This
- Start by clarifying functional and non-functional requirements with the interviewer.
- Estimate the scale: QPS, storage, bandwidth. This drives your design decisions.
- Draw a high-level architecture first, then deep dive into 1-2 critical components.
- Discuss trade-offs explicitly (e.g., consistency vs availability, SQL vs NoSQL).
- Address failure scenarios, monitoring, and how the system handles 10x traffic spikes.
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Requirements
- Functional Requirements:
- Support real-time analytics for sales data, inventory levels, and customer behavior.
- Provide dashboards for visualization of key metrics (e.g., sales trend...
Capacity Estimation
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User Base:
Assume 250 million customers with an average of 5 interactions per day, leading to 1.25 billion requests daily. -
Data Volume:
If each interaction generates 10KB of dat...
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