ruby-oai seamless resumption

Gemfile

source "http://rubygems.org"
gem "oai", :git => "https://github.com/tjdett/ruby-oai.git", :branch => "seamless-resumption"
gem "redis"
gem "libxml-ruby"

harvest.rb

#!/usr/bin/env ruby

require "rubygems"
require "bundler/setup"
require "redis"
require "oai"

r = Redis.new
client = OAI::Client.new "http://amsdottorato.cib.unibo.it/cgi/oai2", :parser => "libxml"

client.list_records(:metadata_prefix => 'oai_dc').full.each do |record|
 r.set record.header.identifier, record.metadata
 puts record.header.identifier
end