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More information here: https://docs.couchdb.org/en/stable/maintenance/backups.html
We also have CouchDB manger project.
The following one is used to see/restore/delete document revisions : https://github.com/convertigo/c8oprj-fullsync-restore-doc
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The last one is used to Compact and Clean up a CouchDB databases: https://github.com/convertigo/c8oprj-lib-compactcouchdb
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