Companion

In Couchbase Server 7.1, this feature is only available in "developer-preview" mode. See the UI XDCR settings for the custom conflict resolution properties.

Conflicts can be resolved by referring to documents' sequence numbers. Sequence numbers are maintained per document, and are incremented on every document-update. The sequence numbers of source and target documents are compared; and the document with the higher sequence number prevails.

Timestamp-based conflict resolution (often referred to as Last Write Wins, or LWW) uses the document timestamp (stored in the CAS) to resolve conflicts. The timestamps associated with the most recent updates of source and target documents are compared. The document whose update has the more recent timestamp prevails.