Design a scalable Search System
Last updated: July 18, 2025
Quick Overview
Design a scalable search system handling millions of requests. Discuss consistency, availability, and performance trade-offs.
Walmart
Software Engineering Fundamentals
Software Engineer
Walmart
July 18, 2025Software Engineer
Technical Screen
Software Engineering Fundamentals
Hard
682
9
1,143 solved
Design a scalable search system handling millions of requests. Discuss consistency, availability, and performance trade-offs.
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.
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Core Design Principles
For designing a scalable search system at Walmart, we should adhere to the following core design principles:
- Separation of Concerns: This principle allows us to modularize the search system in...
Architecture
The architecture of the scalable search system for Walmart could be structured as follows:
- Microservices Architecture: We will leverage a microservices architecture where each service is respo...
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