How do different coherence protocols compare in distributed systems?

What are coherence protocols in distributed systems?

Coherence protocols ensure that multiple copies of data remain consistent across distributed systems. They manage how updates are propagated.

Can you compare the different types of coherence protocols?

Sure! The main types are strict, sequential, and eventual coherence. Strict coherence ensures all operations appear in a single order, while eventual coherence allows for temporary inconsistencies.

What are the advantages of using eventual coherence?

Eventual coherence is more scalable and can improve performance in systems where immediate consistency isn't critical, like social media feeds.

Are there any drawbacks to eventual coherence?

Yes, the main drawback is that users may see stale data, which can lead to confusion or errors in applications requiring real-time accuracy.