Design a large-scale Feed Generation Platform
Last updated: April 14, 2026
Quick Overview
Design a fault-tolerant feed generation system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Meta
April 14, 20264
4
2,121 solved
Design a fault-tolerant feed generation system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Meta asks this during the Technical Screen to assess your depth in software engineering. They want to see understanding of design patterns, system architecture, and the trade-offs involved in different technical approaches.
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 document this for other engineers?
- What testing strategy would you use for this component?
- What are the security implications of this design?
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Core Design Principles
For this Feed Generation Platform, several core design principles apply:
- Single Responsibility Principle (SRP): Each component of the system should focus on a single task, such as fetching user...
Architecture
The architecture for the Feed Generation Platform at Meta will employ a microservices approach, consisting of:
- API Gateway: This will serve as a single entry point for requests, providing load b...
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