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Thanks for the clarification. Can I ask how the MVCC is implemented (e.g. WAL, MVTO, MVRC, etc.), or if there's documentation around that might give some additional insight?

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Here’s a link that describes the Couchstore file format. It’s the storage engine for Couchbase and is essentially the same design as CouchDB. https://github.com/couchbaselabs/couchstore/wiki/Format

Thanks a lot; this is super-helpful.

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