fetcher.rb

class Fetcher
  def initialize(path)
    @path = path
  end

  def fetch!
    VCR.use_cassette('#{@path}/fetched') do
      response = Net::HTTP.get_response(URI("api.http://example.com/#{@path}"))
      process(response)
    end
  end
end

main.rb

class Main
  def process_all
    self.paths.each do |path|
      fetcher = Fetcher.new(path)
      fetcher.fetch!
    end
  end
end

setup.rb

# global
VCR.configure do |c|
  c.cassette_library_dir = 'fixtures/vcr_cassettes'
end