What is causal consistency in cloud computing?

What is causal consistency in cloud computing?

Causal consistency is a consistency model that ensures operations are seen by all nodes in the order they were causally related.

How does it differ from eventual consistency?

Unlike eventual consistency, causal consistency guarantees that if one operation causally affects another, the affected operation will be seen after the cause.

Can you give an example of where causal consistency is important?

Sure! In collaborative applications, like Google Docs, causal consistency ensures that if one user sees a change, others will see it in a way that respects the order of changes.

What are the challenges of implementing causal consistency?

Challenges include maintaining the causal relationships efficiently and ensuring low latency while providing strong consistency guarantees.