Hi,
Let's say the view searches across documents for a keyword. It's okay
to emit the entire doc or merely the docid as map result. I'm working
with couchdb-python here, and it appears complicated to convert
ViewResults to Documents which I'm comfortable to work with. So I
choose to emit only the docid, and run another loop to retrieve the
actual document.
I'm wondering if this is a good approach. It'll require more API
calls, will it be slower?
It'll probably depend on the view, size of document etc. but I
wouldn't be afraid of making 2 calls to CouchDB (it's designed for
concurrency). You can also query the view with ?include_docs=true -
that'll be more efficient in terms of space but slower than emitting
the doc in the view.
There's no hard and fast rule, though, and what works well in one use
case may be dreadful in another. You might have very large docs that
the client only needs a small part of, so why send it all?
And I wonder if emitting only docid is more space-efficiently (in
terms of view-occupied storage) than emitting the whole doc?
Yes, it is.
Cheers
Simon
