Design a distributed Analytics System

Last updated: January 12, 2026

Quick Overview

Design a distributed analytics system handling millions of requests. Discuss consistency, availability, and performance trade-offs.

Walmart
System Design
Software Engineer
Walmart
January 12, 2026
Software Engineer
Onsite
System Design
Medium

408

8

1,703 solved


Design a distributed analytics system handling millions of requests. Discuss consistency, availability, and performance trade-offs.

How to Approach This
  1. Start by clarifying functional and non-functional requirements with the interviewer.
  2. Estimate the scale: QPS, storage, bandwidth. This drives your design decisions.
  3. Draw a high-level architecture first, then deep dive into 1-2 critical components.
  4. Discuss trade-offs explicitly (e.g., consistency vs availability, SQL vs NoSQL).
  5. Address failure scenarios, monitoring, and how the system handles 10x traffic spikes.
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Sample Answer
Requirements

Functional Requirements:

  • Data Ingestion: The system must handle data ingestion from various sources like POS systems, online transactions, and inventory systems in real time.
  • **Data Proces...
Capacity Estimation

Assuming Walmart processes about 1 million transactions per hour from its stores and online platforms:

  • Data Volume: Each transaction generates approximately 1KB of data. Therefore, the hourly da...

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