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System Design Case Studies Tracker

15 case studies from Salesforce with full breakdowns.

176case studies
30companies
31topics
~5 minaverage read

Companies

Meta28Microsoft27Amazon23OpenAI23Google20TikTok16Anthropic15Salesforce15Apple12Uber12Atlassian11JPMorgan11LinkedIn11Goldman Sachs9Netflix9Oracle9Snowflake9Rippling8Airbnb7Bloomberg7Capital One7Databricks7Walmart7Flipkart6NVIDIA6Pinterest6Roblox6Adobe4Visa4Anduril1

Topics

Distributed Systems 90Real-time 51Storage 43Data Pipelines 42API Design 41Databases 38Caching 37Security 32AI / ML 23Algorithms 20Scheduling 20Search 19Event Driven 14Fintech 14Analytics 11E-commerce 11Geospatial 11Observability 11Payments 11Messaging 10CDN 9Ads 8Concurrency 8Frontend 8Booking System 6Networking 5IoT 4Collaboration 3Media 3Media Streaming 3Rate Limiting 2
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Google Drive
16 min readStorageCDNDistributed Systems
Advanced▶ Mock
Netflix – Streaming Service
17 min readMedia StreamingCDNStorage
Advanced▶ Mock
Push Notification Service
17 min readReal-timeMessagingDistributed Systems
Advanced+5▶ Mock
MakeMyTrip – Hotel Booking System
20 min readDistributed SystemsPaymentsBooking System
Beginner+3▶ Mock
Messenger App
9 min readReal-timeMessagingDistributed Systems
Advanced+5▶ Mock
Analytics Dashboard for an AI Chat Product
5 min readAnalyticsAI / MLData Pipelines
Intermediate▶ Mock
Concurrent Car Reservation Service
4 min readBooking SystemDatabasesConcurrency
Intermediate▶ Mock
Coffee Ordering System with Real-Time Notifications
6 min readE-commerceReal-timeAPI Design
Beginner▶ Mock
Real-Time Collaborative Editor (Google Docs / Sheets)
7 min readCollaborationReal-timeDistributed Systems
Advanced▶ Mock
Distributed Job Scheduler (Cron at Scale)
7 min readSchedulingDistributed SystemsEvent Driven
Advanced+7▶ Mock
Distributed Rate Limiter
8 min readRate LimitingDistributed SystemsAPI Design
Intermediate+9▶ Mock
911 Emergency Call Routing Platform
5 min readReal-timeDistributed SystemsGeospatial
Advanced▶ Mock
Multi-Vendor Integration Platform (Connectors for Email, Slack, CRMs)
4 min readAPI DesignSecurityEvent Driven
Intermediate▶ Mock
Payment Processing System (Stripe-style)
6 min readPaymentsFintechDistributed Systems
Advanced+1▶ 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.

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