Software Engineering · Distributed Systems
Every read returns the most recent write, so all clients see the same data at the same time — one of the three properties in the CAP theorem.
Example: Two users refreshing a bank balance page seconds after a transfer both see the updated amount, not one seeing old and one seeing new.
In practice: The CAP theorem says you can't guarantee perfect consistency and availability during a network partition — real systems pick which one to sacrifice based on the use case.