A complete framework for the web crawler system design interview: politeness policies, URL frontier design, duplicate detection, and distributed crawling trade-offs interviewers actually probe.
How to design a real-time collaborative document editor: operational transformation vs CRDTs, conflict resolution, and cursor synchronization, framed for the system design interview.
A component-level breakdown of a YouTube-style video platform: upload service, transcoding workers, metadata database, view counters, and CDN, plus how data flows between them.
The follow-up questions that separate strong system design candidates from average ones: storage growth, hot video caching, thundering herd problems, and scaling to live streaming.
A structured walkthrough of designing a video-sharing platform like YouTube for system design interviews, covering upload pipelines, transcoding, CDN delivery, and recommendations.
A 2026 engineering guide to consistency models—strong, eventual, causal—with real trade-offs, patterns, and interview framing.