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https://issues.apache.org/jira/browse/COUCHDB-554?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Paul Joseph Davis updated COUCHDB-554:
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Skill Level: Regular Contributors Level (Easy to Medium)
> RFC3284 support for delta-based attachment updates
> --------------------------------------------------
>
> Key: COUCHDB-554
> URL: https://issues.apache.org/jira/browse/COUCHDB-554
> Project: CouchDB
> Issue Type: New Feature
> Components: Database Core
> Reporter: Robert Newson
>
> I was thinking about being to update an attachment with a binary diff instead
> of a full upload (in those cases where the diff would be much smaller, of
> course). RFC3284 (http://www.faqs.org/rfcs/rfc3284.html) seems to document a
> generic syntax for describing a patch.
> The idea is that you would PUT an encoded diff as the body instead of sending
> the full bytes. If the attachment's revision matches your PUT's revision,
> then CouchDB will apply the delta to its locally stored version to make the
> new version. As a further option, CouchDB could store the delta itself and
> apply it on fetch. This might complicate compaction, though.
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