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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 Onsite rounds at Uber.

What role is this question designed for?

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

Design Product Page View Tracking

Last updated: May 11, 2026

Quick Overview

This question evaluates a candidate's ability to design scalable, reliable event-collection and analytics systems, covering client- and server-side instrumentation, event schemas/APIs, counting total versus unique views, handling high write volumes for popular products, storage choices for raw events and aggregated counters, and operational concerns such as bot filtering, deduplication, privacy, fraud prevention, freshness, reliability, and monitoring. It is commonly asked in the System Design domain to assess architectural thinking and operational trade-offs, testing both conceptual understanding of distributed systems and practical application of scalable data pipelines, storage, and observability.

Uber

Apr 12, 2026, 12:00 AM

Software Engineer

Onsite

System Design

Design a view-tracking system for a large e-commerce product detail page.

When a shopper opens a product page on web or mobile, the system should record the view. The product page may display view-related information such as total views, recent views, or seller-facing analytics.

Please cover:

Client-side and server-side event collection.
APIs or event schemas for recording page views.
How to count total views and unique views.
How to handle very popular products with high write volume.
Storage choices for raw events and aggregated counters.
Bot filtering, duplicate handling, privacy, and fraud prevention.
Freshness requirements, reliability, and monitoring.

Solution

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