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Cross-cluster and cross-datacenter Kafka replication patterns.

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Kafka Geo Replication: Multi-Region and Cross-Datacenter Patterns

· 6 min read
OSO Engineering
OSO Engineering
The team behind OSO Kafka Backup

Kafka geo replication copies topics between clusters in different regions or datacenters, so a regional outage does not take your streaming platform with it. In-cluster replication (RF=3) protects against broker loss inside one failure domain; geo replication protects against losing the domain itself. This guide compares the four patterns, shows what MirrorMaker 2 setup looks like over a WAN, and covers the failure mode replication cannot solve.