def refresh
    json = Rails.cache.fetch('json-all', :expires_in => 1.seconds) do
      json = {}
      json[:server_time] = Time.zone.now.to_i
      items = Item.all :conditions => { :et => { "$gt" => Time.now }}
      json[:items] = {}
      items.each do |item|
        time = (item.et - Time.zone.now)
        hours = (time/3600).to_i
        minutes = (time/60 - hours * 60).to_i
        seconds = (time - (minutes * 60 + hours * 3600))
        json[:items][item.id.to_s.to_sym] = {}
        json[:items][item.id.to_s.to_sym][:price] = item.price.to_f / 100
        json[:items][item.id.to_s.to_sym][:et] = "%02d:%02d:%02d" % [hours, minutes, seconds]
        json[:items][item.id.to_s.to_sym][:bids] = item.bids
        json[:items][item.id.to_s.to_sym][:state] = item.et > Time.now ? "online" : "completed"
      end
      logger.info { ">>> Clear cache" }
      json

    end
    render :json => json.to_json
  end