Qu.plugin(:autoretry) do |*errors|
  options = {:limit => 3}.merge!(errors.extract_options!)
  errors << Exception if errors.empty?

  before :failure do |job, e|
    if errors.any? {|error| error === e }
      job.data[:retries] += 1
      Qu.requeue job unless job.config[:retries] >= limit
      halt # don't report the error yet
    end
  end
end


class ProcessPresentation < Qu::Job
  autoretry Timeout::Error, :times => 5

  attr_reader :presentation

  def initialize(presentation_id)
    @presentation = Presentation.find(presentation)
  end

  def perform
    # …
  end
end