Design a URL Shortening for Rippling

Last updated: August 27, 2025

Quick Overview

Design a distributed url shortening system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.

Rippling
Software Engineering Fundamentals
Software Engineer
Rippling
August 27, 2025
Software Engineer
Onsite
Software Engineering Fundamentals
Medium

38

7

3,452 solved


Design a distributed url shortening system that handles millions of requests. Discuss trade-offs in consistency, availability, and performance.

Software engineering fundamentals questions at Rippling test your understanding of core CS concepts and their practical application. This Onsite question evaluates how you apply engineering principles to build maintainable, scalable software.

What the Interviewer Expects
  • Apply engineering principles to a realistic design scenario
  • Discuss trade-offs between different approaches with concrete examples
  • Demonstrate understanding of testability, maintainability, and extensibility
  • Connect theoretical concepts to production engineering practices
  • Discuss how the approach scales with team and codebase size
Key Topics to Cover
CI/CD pipelines
API design and RESTful conventions
Design patterns (Factory, Observer, Strategy, etc.)
Testing strategies (unit, integration, e2e)
How to Approach This
  1. Apply SOLID principles. Single Responsibility makes code testable, Open/Closed makes it extensible.
  2. Choose data structures based on access patterns, not familiarity.
  3. Prefer immutable data and message passing over shared mutable state for concurrency.
  4. Design APIs with RESTful conventions, versioning, meaningful errors, and pagination from day one.
Possible Follow-up Questions
  • How would you measure the performance of this component in production?
  • What are the security implications of this design?
  • How would you document this for other engineers?
  • What testing strategy would you use for this component?
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Sample Answer
Core Design Principles

For designing a URL shortening service at Rippling, the following core design principles are essential:

  1. Simplicity: The service should be easy to use for end-users, as well as for developers m...
Architecture

The proposed architecture for the URL shortening system at Rippling would be:

  1. Microservices: The system can be broken down into microservices that handle URL shortening, redirection, and analy...

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