Design a Ride Matching Service

Last updated: May 7, 2026

Quick Overview

Design a high-throughput ride matching system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.

Adobe
System Design
Machine Learning Engineer
Adobe
May 7, 2026
Machine Learning Engineer
System Design Round
System Design
Easy

9

12

1,046 solved


Design a high-throughput ride matching system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.

System design interviews at Adobe 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
  • 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
Requirements gathering and capacity estimation
Partitioning and sharding strategies
High-level architecture and component design
API design and rate limiting
Message queues and async processing
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 10x increase in traffic overnight?
  • How do you ensure data consistency across multiple services?
  • How would you optimize costs as the system scales?
  • How would you handle schema migrations with zero downtime?
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Sample Answer
Requirements Clarification

Before diving into the architecture, clarify the scope with the interviewer. For Ride Matching Service, key functional requirements include: what are ...

Capacity Estimation

Estimate the scale to drive design decisions. Assume 100M DAU with an average of 10 actions per user per day = 1B requests/day ~ 12K QPS average, ~36K...


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