What is the CQRS (Command Query Responsibility Segregation) pattern, and how does it fit into microservices?

Short answer: re responsible for applying business logic and persisting data. Query Side: The microservices handling reads have an optimized, often denormalized, view of the data to provide faster responses.

Real-world example (ShopNest)

ShopNest splits Catalog, Cart, Order, and Payment into services so teams can deploy catalog changes without redeploying payments.

Say this in the interview

1. Define — one clear sentence (the short answer above).
2. Example — relate it to a project like ShopNest or your real work.
3. Trade-off — when you would not use it.