Build a multi-tenant Feed Generation Pipeline
Last updated: June 12, 2026
Quick Overview
Design a multi-tenant feed generation system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
NVIDIA
System Design
Software Engineer
NVIDIA
June 12, 2026Software Engineer
Technical Screen
System Design
Medium
10
3
2,140 solved
Design a multi-tenant feed generation system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
System design interviews at NVIDIA typically last 45-60 minutes. You are expected to drive the conversation, starting from requirements gathering through to a detailed architecture. The interviewer will evaluate your ability to handle ambiguity and make practical engineering decisions.
What the Interviewer Expects
- Systematically gather requirements and estimate capacity (QPS, storage, bandwidth)
- Design a scalable architecture with clear component responsibilities
- Make well-reasoned database and caching decisions with trade-off analysis
- Address consistency vs availability trade-offs specific to the use case
- Discuss partitioning strategy, replication, and data modeling
- Cover failure handling, monitoring, and alerting strategies
Key Topics to Cover
Database selection and data modeling
Caching strategies (local, distributed, CDN)
High-level architecture and component design
Monitoring, logging, and alerting
Partitioning and sharding strategies
How to Approach This
- Start by clarifying functional and non-functional requirements with the interviewer.
- Estimate the scale: QPS, storage, bandwidth. This drives your design decisions.
- Draw a high-level architecture first, then deep dive into 1-2 critical components.
- Discuss trade-offs explicitly (e.g., consistency vs availability, SQL vs NoSQL).
- Address failure scenarios, monitoring, and how the system handles 10x traffic spikes.
Possible Follow-up Questions
- How do you ensure data consistency across multiple services?
- How would you optimize costs as the system scales?
- What happens if one of your database nodes goes down?
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Requirements
Functional Requirements:
- Multi-Tenancy Support: The system must handle multiple tenants, ensuring data isolation and security.
- Feed Generation: Ability to generate customized fee...
Capacity Estimation
Back-of-Envelope Calculations:
- Expected Traffic: Assume 1 million tenants, each making an average of 100 requests per day.
- Total Daily Requests: 1,000,000 tenants * 100 requests = ...
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