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when to use Redis Kafka WebSockets Elasticsearch articles

Focused reading for candidates preparing stronger examples, sharper technical stories, and more credible interview answers.

System Design28 min read

The Ultimate System Design Mental Model: Mapping Real-World Problems to Technologies

How restaurant menus, Domino's kitchens, airport boards, warehouses, libraries, and flight control rooms explain the technologies senior engineers choose in system design interviews

A book-style system design guide that maps real operational bottlenecks to technologies like Redis, Kafka, WebSockets, object storage, Elasticsearch, Cassandra, DynamoDB, CDNs, API gateways, retries, and observability.

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