Mongodb

This one covers MongoDB and Mongoose from schema design through aggregation pipelines. You get practical examples of both the native driver and Mongoose ODM, with real decisions like when to embed documents versus use references. The code shows proper connection handling, indexing strategies, query operators, and update patterns. The aggregation section demonstrates pipeline stages for grouping and transforming data. What I like here is the focus on best practices you actually need: virtuals, population, text search, and those update operators that aren't always obvious. It's comprehensive enough to reference during implementation without drowning you in theory.