Exploring federation via Apache CouchDB's Replication protocol.
Based on ideas from Egocentric Architecture: https://speakerdeck.com/bigbluehat/egocentric-architecture
Cloudant or remoteApache CouchDBprivate-user-spacealiceprivate-user-space(optional)alice-bobreplicatealice-charliegroupsreplicateshare-with-aliceprivate-user-spacefilteredcharlie Extension / Appfilteredreplicationshare-with-bobExtension / Appshare-with-charliefilteredreplicationshare-with-aliceprivate-user-spacefilteredbob Extension / App
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