How do you handle circular dependencies in DI?

Short answer: Circular dependencies occur when two or more services depend on each other, creating an infinite loop. To handle them: Refactor the code to remove tight coupling. Use interfaces or events to break the cycle. Consider using property injection carefully (not recommended as a first choice). Rethink your design – circular dependencies often indicate architectural issues.

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.