ruby.rb

restaurants = []
counter = 0
doc = Nokogiri::XML(File.open("big.xml", "r")) 
doc.xpath('//row').each do |entry|
    restaurant = map_to_restaurant(entry)
  restaurants << rest
  counter += 1
  if counter % 1000 == 0
    mongo.collection.insert_many(restaurants.map(&:to_h))
    restaurants = []
  end
end