Data Consistency: Data consistency mechanisms like eventual consistency, CAP?

Short answer: theorem, and distributed transactions are working as expected. Distributed systems introduce complexities like network partitioning, latency, and message ordering that must be carefully tested to ensure that the system as a whole behaves correctly. Advanced Microservices Concepts

Real-world example (ShopNest)

After payment succeeds, ShopNest publishes OrderPaid. Inventory and Notification services react independently—no giant distributed transaction.

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.