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2014 | OriginalPaper | Chapter
13. Cross-Datacenter Replication (XDCR)
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Abstract
As you’ve seen throughout this book, Couchbase Server can replicate bucket data internally. This allows Couchbase to prevent data loss in the event of node failure. However, there are several cases in which you might like to replicate your data to another cluster. For example, you might need to provide your application with cluster-level failover, otherwise known as a hot backup. Another reason for cluster-level replication in often found in applications that are distributed across data centers in different geographic regions. For such applications, it makes sense to replicate your data between clusters, providing local replicas of your data. Cross-datacenter replication (XDCR) is a bucket-level, cluster-to-cluster replication. You can use XDCR to synchronize data in a bucket between different clusters.