913aca9a_ent_repository___Henri_Bergius__CouchDB
[feature] import and export [JCR / Jackrabbit] nodes or parts of the repository (or the whole repo) can be imported or exported in XML. 2 formats: docview for human-frindly representation, sysview including all technical aspects [Midgard] Objects can be exported and imported in XML format. There are tools supporting replication via HTTP, tarballs, XMPP, and the CouchDB replication protocol [CouchDB] 
JSON serialization is the standard way of accessing the repository. CouchDB replication protocol supports full synchronization between instances
What is a content repository - Henri Bergius
CouchDB