CouchDB view composing JSON objects with embedded arrays from two separated documents?

Generally speaking you use less disk space if you do not emit(...,doc) .

This answer is completely apocryphal and anecdotal, but that's pretty much exactly how I've worked with one-to-many relationships in CouchDB. If there are any scaling issues, I haven't seen them yet. (But I admit I haven't tried too hard to find them.).

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