@hackproduct9: Most database tutorials start with tools. The better way is to start with problems. 🗂 Document → Flexible records ⚡ Key-Value → Fast lookups 📈 Column → Massive event data 🕸 Graph → Relationships When interviewers ask about NoSQL, they're usually testing whether you understand the tradeoffs — not whether you've memorized MongoDB syntax. Learn the mental model once and you'll know when to reach for MongoDB, Redis, Cassandra, or Neo4j: • User profiles? → Document • Shopping cart? → Key-Value • Billions of events? → Column • Friend recommendations? → Graph What's your favorite NoSQL database and why? @hackproduct — mental models for engineers #DataEngineering #SystemDesign #DatabaseDesign #NoSQL #MongoDB

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Wednesday 24 June 2026 02:33:04 GMT