gistfile1.rb

require 'sinatra/base'

module DataBase
  class << self
    attr_accessor :data
  end
end

class Server < Sinatra::Base
  
  DataBase.data = 'Data 1'
  
  get '/query' do
    DataBase.data
  end
  
  get '/reload' do
    Thread.new do
      sleep 4
      DataBase.data.succ!
      puts DataBase.data
    end
  end
  
end