Design a Monitoring for Netflix
Last updated: January 18, 2026
Quick Overview
Design a multi-tenant monitoring system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Netflix
January 18, 202621
6
382 solved
Design a multi-tenant monitoring system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
This fundamentals question from Netflix'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
- What testing strategy would you use for this component?
- How would you measure the performance of this component in production?
- How would you document this for other engineers?
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Core Design Principles
In designing a multi-tenant monitoring system for Netflix, several core design principles apply:
- Single Responsibility Principle (SRP): Each component of the monitoring system should have a si...
Architecture
The architecture of the monitoring system will be designed around a microservices approach:
- API Gateway: Acts as a single entry point for clients, managing authentication and routing reques...
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