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Caching System Design Case Studies

4 Caching case studies from Meta with full breakdowns.

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to save your progress.

Distributed Cache and the Hot Key / Cache Stampede Problem
6 min readCachingDistributed SystemsDatabases
Intermediate▶ Mock
Flight Search Platform (Google Flights / Kayak)
4 min readSearchCachingData Pipelines
Advanced▶ Mock
Post Privacy and Visibility System (Facebook-style)
4 min readSecurityDistributed SystemsCaching
Advanced▶ Mock
Proximity Search (Yelp / Nearby Restaurants)
7 min readGeospatialSearchCaching
Intermediate▶ Mock

Frequently Asked Questions

What is Caching in system design?

Caching is a core system design topic covered in 37 case studies on InterviewSkool. It appears frequently in FAANG interviews, especially at Google, Amazon, and Meta.

How should I prepare Caching 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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