Design Inventory Management Infrastructure for microservices
Last updated: July 2, 2025
Quick Overview
Design a distributed inventory management system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Apple
July 2, 202578
6
2,670 solved
Design a distributed inventory management system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
This fundamentals question from Apple's Onsite tests whether you can reason about software design at a deep level. The interviewer expects discussion of maintainability, testability, and operational considerations.
What the Interviewer Expects
- Explain the concept clearly with a practical example
- Discuss when and why to apply this principle
- Identify common mistakes and anti-patterns
- Compare with alternative approaches
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
- How would you measure the performance of this component in production?
- What are the security implications of this design?
- How would this design change if the team size doubled?
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Core Design Principles
For the inventory management system at Apple, the core design principles include:
- Separation of Concerns: This principle is crucial as it allows different microservices (e.g., inventory tracki...
Architecture
The architecture for the distributed inventory management system at Apple will consist of:
- Microservices: Each service (e.g., Inventory Service, Order Service, Notification Service) will be dep...