What are the benefits of Unit of Work in managing transactions?

Short answer: Transactional consistency: All changes across repositories are saved in a single transaction.

Explain a bit more

Centralized commit: All changes are committed through one method (Complete()), improving control and readability. Reduced code duplication: Prevents repeated save logic across repositories. Improved testability: Enables better unit testing by mocking a single Unit of Work instead of multiple repositories. Change tracking: Ensures that only modified entities are persisted, reducing unnecessary database operations.

Real-world example (ShopNest)

Patterns in ShopNest should solve a real pain (swappable payments, test seams)—not be added for decoration.

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.