Understanding How Transactions Work in Cross Data Center Replications (XDCR)

Couchbase's Cross Data Centre Replication (XDCR) enables seamless data replication across various geographies, while ACID transactions support reliable and efficient transaction workloads. XDCR facilitates the replication of data between databases or buckets in different clusters, cloud providers, or data centers. It supports unidirectional and bidirectional operations, active-active replication with automatic conflict resolution, and filtered replication to replicate subsets of documents based on target cluster needs. Couchbase transactions enable ACID actions on the database, supporting distributed multi-document, multi-node ACID transactions at scale without sacrificing performance and high availability. XDCR replicates data from the source to the destination cluster asynchronously, ensuring eventual consistency for transactional updates. Understanding these mechanisms can help clarify why certain documents might not appear in the destination cluster immediately due to the transactional states and replication processes involved.

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