Architect a multi-tenant Feed Generation Engine
Last updated: February 24, 2026
Quick Overview
Design a multi-tenant feed generation system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Grafana Labs
February 24, 202638
6
2,391 solved
Design a multi-tenant feed generation system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
This is a common system design question asked during System Design Round at Grafana Labs. The interviewer expects you to demonstrate your ability to design large-scale distributed systems, make well-reasoned trade-offs, and communicate your thought process clearly. Grafana Labs values engineers who can think about scalability from day one.
What the Interviewer Expects
- Clearly define functional and non-functional requirements
- Propose a reasonable high-level architecture with core components
- Choose appropriate data storage solutions with basic justification
- Discuss basic scaling strategies (horizontal scaling, caching)
- Identify potential bottlenecks and suggest simple solutions
Key Topics to Cover
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 would you optimize costs as the system scales?
- How do you ensure data consistency across multiple services?
- How would you handle a 10x increase in traffic overnight?
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Requirements
- Functional Requirements:
- Multi-tenant Support: Each tenant must have isolated feed data.
- Feed Generation: Real-time generation of feeds based on user activities and interactions....
Capacity Estimation
Assuming we have 1 million active tenants and each tenant generates an average of 50 requests per second:
- Total Requests per Second:
- 1,000,000 tenants * 50 requests/tenant/sec = 50,000,000...
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