Mission critical apps need a database that's always on. While intra-cluster replication helps with server failures, giving you high availability, your system still remains at risk from catastrophic failures. You may also need a way to improve the response time for users when they're globally distributed.

Cross datacenter replication (XDCR) provides an easy way to replicate data between clusters for disaster recovery, geo-locality and test, development, and export.

 In the white paper Developing Applications with XDCR, you’ll learn:

• How the Couchbase XDCR functionality works
• The architecture, topology and use cases of XDCR
• How to begin developing apps with XDCR