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Concurrency System Design Case Studies

InterviewSkool tracks 8 Concurrency case studies with architecture diagrams, scale estimates, and deep dives.

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Companies

Anthropic3Adobe1Capital One1JPMorgan1NVIDIA1Salesforce1

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
Concurrency✕Clear all
Highly Reliable Account Balance System (Wallet / Ledger)
5 min readFintechPaymentsDatabases
Intermediate▶ Mock
Autonomous Vehicle Camera Perception Pipeline
5 min readAI / MLReal-timeConcurrency
Advanced▶ Mock
Concurrent Car Reservation Service
4 min readBooking SystemDatabasesConcurrency
Intermediate▶ Mock
University Course Registration System
4 min readBooking SystemDatabasesConcurrency
Intermediate▶ Mock
Scalable Image Processing Service
5 min readData PipelinesSchedulingStorage
Intermediate▶ Mock
LLM Inference API with Dynamic Batching
7 min readAI / MLConcurrencyScheduling
Advanced▶ Mock
Making Many HTTP Requests Fast (Within Rate Limits)
3 min readConcurrencyAPI DesignRate Limiting
Intermediate▶ Mock
PDF Viewer Search Box that Cycles Through Matches (React)
4 min readFrontendAlgorithmsConcurrency
Intermediate▶ Mock

Frequently Asked Questions

What is Concurrency in system design?

Concurrency is a core system design topic covered in 8 case studies on InterviewSkool. It appears frequently in FAANG interviews, especially at Google, Amazon, and Meta.

How should I prepare Concurrency 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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