gistfile1.rb

while true
  needs_update = Feed.needs_update
  count = needs_update.count
  if count > 0
    puts "#{count} feeds need to be updated"
    needs_update.each do |feed|
      begin
        puts "Feed #{feed.id} is going to be updated"
        start = Time.now
        feed.force_update!
        finish = Time.now
        time = finish - start
        puts "Feed #{feed.id} updated in #{time} seconds"
      rescue => e
        puts e.message
        e.backtrace.each{|s|puts s}
      end
    end
  else
    sleep 30
  end
end