applied_concept.rb

current_scheduler = scheduler(:availabilities)

def current_scheduler.handle_exception(job, exception)
  Airbrake.do_the_right_thing(exception, other_params)
  puts "job #{job.job_id} caught exception '#{exception}' - the Airbrake has been triggered"
end

class TaskManager
  # [..]
  # do you think this may work? (hoptoad_options scope)
  def scheduler(key)
    hoptoad_options = { :environment_name => @env }
    @schedulers[key] ||= Rufus::Scheduler.start_new.tap do |scheduler|
      def scheduler.handle_exception(job, exception)
        HoptoadNotifier.notify(exception, hoptoad_options.merge(:parameters => { :job => job }))
        say "job #{job.job_id} caught exception '#{exception}' - the Airbrake has been triggered"
      end
    end
  end
end

chunky_concept.rb

@cache = {}

def get(name)
  @cache[name] ||= Array.new
end

# just to clarify, what get(name) does:
# it manages object references
get(:one) == get(:one)
get(:two) != get(:one) 
get(:one) != []

one = get(:one)
def one.chunky
  "bacon" * self.size
end

one.respond_to? :chunky 
one.chunky # => ''
get(:one) << 'say it'
one.chunky # "bacon"

get(:two).respond_to? :chunky # => false