What are consistency models in cloud computing?

What are consistency models in cloud computing?

Consistency models define the rules for how data is synchronized across distributed systems. They ensure that all users see the same data at the same time.

Can you explain the difference between strong and eventual consistency?

Strong consistency guarantees that any read operation will return the most recent write, while eventual consistency means that updates will propagate to all nodes eventually, but not immediately.

Why is eventual consistency often preferred in cloud systems?

Eventual consistency is preferred because it allows for higher availability and better performance, especially in distributed systems where latency can be an issue.

What are some examples of systems that use these models?

Examples include Amazon DynamoDB, which uses eventual consistency, and Google Spanner, which offers strong consistency.