require 'rubygems' require 'couchrest' # set the source db and map view source = CouchRest.new("http://localhost:5984").database('source-db') source_view = 'mydesign/view-map' # set the target db target = CouchRest.new("http://localhost:5984").database('target-db') pager = CouchRest::Pager.new(source) # pager will yield once per uniq key in the source view pager.key_reduce(source_view, 10000) do |key, values| # create a doc from the key and the values example_doc = { :key => key, :values => values.uniq } target.save(example_doc) # keep us up to date with progress puts k if (rand > 0.9) end