A complete guide to acing frontend system design interviews — from the RADIO framework to real-world component designs asked at FAANG.
5 articles in this series
Learn the RADIO framework — Requirements, Architecture, Data Model, Interface, Optimizations — the structured method for frontend system design interviews at FAANG and top tech companies.
A complete frontend system design answer for the autocomplete / typeahead question. Covers requirements, component architecture, API design, debouncing, caching, keyboard navigation, and ARIA accessibility.
A complete frontend system design answer for designing a news feed like Facebook or Twitter. Covers architecture, infinite scroll, real-time updates, optimistic UI, virtualization, and accessibility.
A complete frontend system design answer for designing a chat application like Messenger or Slack. Covers real-time messaging with WebSockets, IndexedDB for offline support, message delivery states, optimistic UI, and cross-tab sync.
A complete frontend system design answer for designing an image carousel component. Covers architecture, CSS layout with scroll snapping, lazy loading, image preloading, touch/swipe support, autoplay, keyboard navigation, and ARIA accessibility.