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Eventual Consistency Model

In plain terms

A model where replicas converge over time, not instantly.

Going deeper

In the eventual consistency model, updates propagate asynchronously so replicas may differ briefly but eventually agree. It favors availability over immediacy.

Under the hood

Common in AP systems; conflict resolution (CRDTs, last-write-wins) determines how replicas reconcile.

Examples

DynamoDB, Cassandra, DNS, shopping carts, high-availability systems.

Think of it like...

Like word of a change spreading through an organization until everyone eventually knows.

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