CouchDB: Create/Update/Delete if new, modified or removed -
i´m doing nightly data synchronisation pull out complete set of documents source/master through rest api , update slave destination couchdb.
the data load pretty small, maximum 100 json documents. update frequency in master expected 1-2 times in week couple of documents.
following changes can occur:
- document removed
- document added
- data in existing document changed
does couchdb provide out-of-box bulk operation doing create/update/delete based on document collection sent in , automatically checks if documents new/changed/removed? if not, approach implement myself?
edit: found 2 useful npm modules comparing json in source , destination. of interestes in solution of question.
since data-set small, recommend using bulk documents api.
you can use _all_docs retrieve entire data-set, store in memory , "does exist" , "what has changed" checks in-place. @ end, send entire 100 documents via _bulk_docs.
if couchdb keeps growing (ie: it's not going 100 docs) write few views can use check add/update on specific data-item.
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