What is quorum in replication?
Quorum in replication refers to the minimum number of nodes that must agree on a value before it is considered valid. This ensures data consistency.
Why is quorum important in distributed systems?
Quorum is crucial because it helps prevent split-brain scenarios and ensures that all nodes have a consistent view of the data.
How is quorum determined in a system?
Quorum is typically determined by the total number of nodes in the system. For example, in a system with 5 nodes, a quorum might require at least 3 nodes to agree.
What happens if a quorum is not reached?
If a quorum is not reached, the operation may fail, and the system may not commit the changes to maintain data integrity.
Can you give an example of quorum in action?
Sure! In a database with 7 replicas, if 4 replicas agree on a transaction, that transaction can be committed, ensuring consistency.
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