How do I approach System Design interview questions?

System Design questions require understanding of core concepts and practice. PracHub provides solutions with explanations to help you master system design interviews.

What difficulty level is this interview question?

This is a medium difficulty System Design question, commonly asked during Technical Screen rounds at DoorDash.

What role is this question designed for?

This question is commonly asked for Software Engineer candidates at DoorDash during technical interviews.

Design a Customer Review Page | DoorDash Interview Question

Design a Customer Review Page

Last updated: Apr 6, 2026

Quick Overview

This question evaluates skills in system architecture, data modeling, API design, storage and search solutions, media handling, ranking, pagination, caching, and scalability for high-traffic review pages.

DoorDash

Jan 31, 2026, 12:00 AM

Software Engineer

Technical Screen

System Design

Design the customer review page for a large marketplace or local-services platform.

The page should support:

Aggregate ratings, such as average score and rating distribution
Individual customer reviews with text feedback
Multimedia attachments, such as photos and videos
Search and filtering over reviews, for example by keyword, rating, recency, and whether media is attached

Discuss:

Core functional and non-functional requirements
APIs and major user flows for reading and writing reviews
Data model for reviews, ratings, users, businesses or products, and media metadata
Storage choices for transactional data, search indexes, and media files
Ranking, pagination, caching, and scalability for high-traffic pages
How you would optionally extend the system with an AI-generated review summary

Solution

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