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Event Driven System Design Case Studies

InterviewSkool tracks 14 Event Driven case studies with architecture diagrams, scale estimates, and deep dives.

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Topics

Distributed Systems 90Real-time 51Storage 43Data Pipelines 42API Design 41Databases 38Caching 37Security 32AI / ML 23Algorithms 20Scheduling 20Search 19Event Driven 14Fintech 14Payments 11Geospatial 11Analytics 11Observability 11E-commerce 11Messaging 10CDN 9Concurrency 8Ads 8Frontend 8Booking System 6Networking 5IoT 4Media 3Media Streaming 3Collaboration 3Rate Limiting 2
Event DrivenClear all
Coupon Distribution System
7 min readDistributed SystemsSecurityEvent Driven
Advanced—▶ Mock
Bidirectional Data Sync Dashboard
5 min readDistributed SystemsEvent DrivenDatabases
Intermediate▶ Mock
Cross-Region Event Processing Platform
4 min readEvent DrivenDistributed SystemsMessaging
Advanced▶ Mock
Distributed Job Scheduler (Cron at Scale)
7 min readSchedulingDistributed SystemsEvent Driven
Advanced+7▶ Mock
Expense Policy and Violation Processing (Rippling)
5 min readFintechDistributed SystemsEvent Driven
Advanced▶ Mock
Multi-Carrier Parcel Shipping System
4 min readE-commerceAPI DesignEvent Driven
Intermediate▶ 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
Perishable-Goods Inventory and Location Tracking
3 min readE-commerceDatabasesEvent Driven
Intermediate▶ Mock
Smart Grid Control over Unreliable Devices
7 min readIoTDistributed SystemsReal-time
Advanced▶ Mock
Pub/Sub System with Replay (Seek Back in Time)
3 min readMessagingDistributed SystemsStorage
Advanced▶ Mock
Cloud Resource Change Tracking Database
3 min readDatabasesEvent DrivenStorage
Intermediate▶ Mock
Global Restaurant Chain Menu Update System
4 min readDistributed SystemsCDNCaching
Intermediate▶ Mock
Scaling a Rules Engine for High Traffic (Rippling)
3 min readDistributed SystemsAlgorithmsEvent Driven
Advanced▶ Mock

Frequently Asked Questions

What is Event Driven in system design?

Event Driven is a core system design topic covered in 14 case studies on InterviewSkool. It appears frequently in FAANG interviews, especially at Google, Amazon, and Meta.

How should I prepare Event Driven for system design interviews?

Study the case studies above, focusing on architecture trade-offs, scale estimates, and API designs. Practice explaining your decisions aloud — this is exactly what interviewers evaluate.

Practice with a Mock Interview

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