How would you implement retries and fallback mechanisms in microservices?

Short answer: Retries and fallback mechanisms help make microservices resilient to transient failures. Fallback mechanisms allow you to define an alternative action if a service fails. Implementation:

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.