What is the difference between coherence and consistency in distributed systems?
Coherence refers to the visibility of writes across different nodes, while consistency ensures that all nodes reflect the same data at the same time.
Can you give an example of coherence in action?
Sure! In a distributed database, if one node updates a value, coherence ensures that other nodes see this update in a timely manner.
How does consistency affect system performance?
Consistency can impact performance because ensuring all nodes have the same data often requires additional communication and coordination.
Are there different types of consistency models?
Yes, there are several models like eventual consistency, strong consistency, and causal consistency, each with its trade-offs.
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