What is an eventual consistency model and how does it apply to distributed systems?

Eventual consistency is a consistency model used in distributed systems where updates to

data will propagate and eventually become consistent across all nodes, but not necessarily

immediately.

• How it works:
• In an eventually consistent system, updates are made to a node and

eventually, that update will be propagated to all other nodes.

• It allows for temporary inconsistencies, but ensures that the system will

converge to a consistent state over time.

• Use cases:
• Suitable for systems that can tolerate a delay in consistency, like NoSQL

databases (Cassandra, DynamoDB) and systems dealing with high

availability and massive scale.