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database choice system design interview articles

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

System Design9 min read

MongoDB vs Cassandra: How to Choose the Right Database in System Design Interviews

How a festival-sale e-commerce system explains when MongoDB feels natural and when Cassandra becomes the safer scaling choice

A practical, story-driven guide to choosing MongoDB vs Cassandra in system design interviews, with real-world examples, comparison tables, tradeoffs, and easy memory rules.

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