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FRONTEND SYSTEM DESIGN

Frontend system design interview guides.

Eight complete interview cases with scale assumptions, architecture rationale, typed contracts, failure recovery, observability, accessibility, and model answers.

Design a Video-streaming frontend

Design the client for a video platform: adaptive playback, buffering resilience, and cross-device continuity.Deep dive · 8 model answers

Design a Collaborative text editor

Design a Google-Docs-style editor: multiple cursors, low-latency sync, and conflict-free merging.Deep dive · 8 model answers

Design a E-commerce frontend

Design the storefront: catalog browsing, cart, and checkout, optimized for conversion and resilience.Deep dive · 8 model answers

Design a Social-media feed

Design an infinite, ranked feed with real-time updates, optimistic interactions, and smooth scroll performance.Deep dive · 8 model answers

Design a Analytics dashboard

Design a dashboard rendering large, filterable time-series and aggregate data without freezing the UI.Deep dive · 8 model answers

Design a Notification system

Design in-app and push notifications: real-time delivery, read state, and cross-device consistency.Deep dive · 8 model answers

Design a Large component library

Design a component library and its distribution/versioning strategy for dozens of consuming teams.Deep dive · 8 model answers

Design a Micro-frontend architecture

Design a system where independently deployed teams compose one cohesive product experience.Deep dive · 8 model answers