@hackproduct9: Most people "study system design" by watching 40 random videos and hoping. 🎲 Here's a better way — one map, 12 designs that cover 90% of what actually gets asked: 🗺️ 🧱 Core infra: URL Shortener, Rate Limiter, Key-Value Store, Distributed Cache — master these and you own the patterns every other system reuses. ⚡ Realtime & media: Chat, News Feed, YouTube/Netflix, Uber — fan-out, WebSockets, CDNs, geospatial indexing. 🤖 AI systems: AI Chat + RAG, LLM Inference, Enterprise RAG, Agentic AI — the topics showing up in 2026 interviews that most prep lists still ignore. And for every one of these, run the same 10-step flow: ✅ requirements → capacity math → APIs & data model → high-level architecture → deep-dive 2 components → scaling → failures & idempotency → consistency vs availability → security/observability/cost → final design. Here's the mindset shift I care about: don't memorize solutions. Learn the patterns, then you can judge any design — including the ones an AI writes for you. 🏗️ Save this. Send it to someone grinding for interviews. 🔖 Which design should we deep-dive into its own reel first? 👇 . . #HackProduct #SystemDesign #AIEngineering #LLM #DistributedSystems

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Tuesday 21 July 2026 00:56:55 GMT