•PRACTICE

System Design Case Studies Tracker

14 case studies from Meta tagged Real-time with full breakdowns.

176case studies
30companies
31topics
~5 minaverage read
Gaming Leaderboard (Top K)
16 min readDistributed SystemsReal-timeStorage
Beginner▶ Mock
Push Notification Service
17 min readReal-timeMessagingDistributed Systems
Advanced+5▶ Mock
Messenger App
9 min readReal-timeMessagingDistributed Systems
Advanced+5▶ Mock
BookMyShow
9 min readDistributed SystemsPaymentsBooking System
Beginner▶ Mock
Uber Design (Ride-Hailing)
5 min readGeospatialReal-timeDistributed Systems
Advanced+2▶ Mock
Ad Click and Impression Aggregator
6 min readAdsAnalyticsData Pipelines
Advanced+2▶ Mock
Content Moderation System (Harmful Post Detection)
6 min readAI / MLSecurityData Pipelines
Advanced▶ Mock
Fitness Tracking App (Strava-style)
3 min readGeospatialStorageAPI Design
Intermediate▶ Mock
Live Comments for Live Video (Facebook Live / TikTok Live)
6 min readReal-timeMessagingDistributed Systems
Intermediate▶ Mock
Real-Time Online Auction (eBay / Live Auctions)
7 min readReal-timeDistributed SystemsPayments
Advanced▶ Mock
Online Chess Platform (chess.com)
6 min readReal-timeDistributed SystemsMessaging
Intermediate▶ Mock
Online Judge and Coding Contest Platform (LeetCode)
6 min readDistributed SystemsSecurityScheduling
Intermediate▶ Mock
Top-K Trending Items (Heavy Hitters)
7 min readAnalyticsReal-timeAlgorithms
Advanced+4▶ Mock

Frequently Asked Questions

What are system design case studies?

System design case studies are real-world architecture problems broken down into structured breakdowns. Each case study covers requirements, high-level design, scale estimates, API designs, and deep dives into key components.

How many system design case studies should I prepare?

For FAANG interviews, preparing 15-20 case studies covering core topics like caching, load balancing, and database sharding is recommended. Focus on understanding trade-offs rather than memorizing solutions.

Which companies ask system design case studies?

All FAANG companies (Google, Amazon, Meta, Apple, Microsoft) plus top tech companies like Netflix, Uber, and Airbnb ask system design case studies. Senior-level interviews almost always include at least one system design round.

Practice with a Mock Interview

Apply these case studies in a live system design mock interview with InterviewSkool's AI interviewer.

Start System Design Interview →