Build a low-latency Analytics Pipeline
Last updated: May 22, 2026
Quick Overview
Design a low-latency analytics system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
Snowflake
May 22, 2026147
14
2,738 solved
Design a low-latency analytics system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.
This is a common system design question asked during Technical Screen at Snowflake. 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. Snowflake 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 do you ensure data consistency across multiple services?
- How would you optimize costs as the system scales?
- How would you migrate from a monolithic to a microservices architecture?
- How would you handle schema migrations with zero downtime?
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Requirements
Functional Requirements
- Real-time Data Ingestion: The system should support ingesting data from various sources such as logs, databases, and APIs with minimal latency.
- *Data Processing...
Capacity Estimation
Assuming the system needs to handle 10 million requests per day:
- Requests per Second (RPS): 10 million / 86400 seconds = ~115 RPS.
- Data Size: If each request corresponds to 1 KB of data, t...
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