Design a large-scale Logging Platform

Last updated: January 21, 2026

Quick Overview

Design a multi-tenant logging system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.

Anthropic
System Design
Machine Learning Engineer
Anthropic
January 21, 2026
Machine Learning Engineer
Onsite
System Design
Easy

464

4

2,477 solved


Design a multi-tenant logging system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.

Anthropic asks this during the Onsite to assess your architectural thinking. They want to see how you decompose a complex problem, choose appropriate technologies, and reason about failure modes. Strong candidates proactively discuss monitoring, alerting, and operational concerns.

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
Caching strategies (local, distributed, CDN)
High-level architecture and component design
Security and authentication
Partitioning and sharding strategies
How to Approach This
  1. Start by clarifying functional and non-functional requirements with the interviewer.
  2. Estimate the scale: QPS, storage, bandwidth. This drives your design decisions.
  3. Draw a high-level architecture first, then deep dive into 1-2 critical components.
  4. Discuss trade-offs explicitly (e.g., consistency vs availability, SQL vs NoSQL).
  5. Address failure scenarios, monitoring, and how the system handles 10x traffic spikes.
Possible Follow-up Questions
  • How would you handle a region-wide outage?
  • How do you ensure data consistency across multiple services?
  • How would you implement rate limiting to protect the system?
  • How would you migrate from a monolithic to a microservices architecture?
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Sample Answer
Requirements

Functional Requirements

  • Multi-Tenancy: The system must support multiple clients, ensuring data isolation and security for each tenant.
  • Logging API: A RESTful API that allows clients to...
Capacity Estimation

Assuming 1 million tenants, each generating an average of 100 log entries per second, we expect:

  • Total log entries per second = 1,000,000 tenants * 100 entries = **100 billion entries pe...

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