How NoSQL data modeling questions test query-first thinking
6 min read A walkthrough of the DynamoDB, Cassandra, and MongoDB modeling questions that show up in system design rounds, and how to reason through them. Read article
System Design
Tools & Reviews
When to reach for Postgres, MySQL, or MongoDB
7 min read How Postgres, MySQL, and MongoDB actually differ on JSON, transactions, and scaling, and which one to reach for in a project or a system design round. Read article
