What is Kafka replication and why is it important?
Kafka replication is a feature that ensures data durability and availability by duplicating messages across multiple brokers.
How does Kafka handle replication internally?
Kafka uses a leader-follower model where one broker acts as the leader for a partition, and others replicate the data.
What happens if a broker fails?
If a broker fails, Kafka automatically promotes one of the followers to be the new leader, ensuring no data loss.
Can I configure the replication factor?
Yes, you can configure the replication factor when creating a topic, which determines how many copies of the data are maintained.
What are the trade-offs of increasing the replication factor?
Increasing the replication factor improves data availability but also requires more storage and can impact performance.
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