Build a geo-distributed Rate Limiting Pipeline
Last updated: November 17, 2025
Quick Overview
Design a geo-distributed rate limiting system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
SentinelOne
November 17, 202598
15
2,354 solved
Design a geo-distributed rate limiting system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Software engineering fundamentals questions at SentinelOne test your understanding of core CS concepts and their practical application. This Onsite question evaluates how you apply engineering principles to build maintainable, scalable software.
What the Interviewer Expects
- Apply engineering principles to a realistic design scenario
- Discuss trade-offs between different approaches with concrete examples
- Demonstrate understanding of testability, maintainability, and extensibility
- Connect theoretical concepts to production engineering practices
- Discuss how the approach scales with team and codebase size
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 testing strategy would you use for this component?
- How would you handle backward compatibility?
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Core Design Principles
For the geo-distributed rate limiting system at SentinelOne, key design principles include Separation of Concerns and Fail-Fast.
- Separation of Concerns: This principle ensures that dif...
Architecture
The architecture for the geo-distributed rate limiting system will consist of a Microservices approach with a combination of API Gateway, Rate Limiting Service, and Data Store.
- **A...
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