In Sinatra(Ruby), how should I create global variables which are assigned values only once in the application lifetime?

Question

In Sinatra, I\'m unable to create global variables which are assigned values only once in the application lifetime. Am I missing something? My simplified code looks like thi

Answer 1

class WebApp < Sinatra::Base
  configure do
    set :my_config_property, 'hello world'
  end

  get '/' do
    "#{settings.my_config_property}"
  end
end

Beware that if you use Shotgun, or some other Rack runner tool that reloads the code on each request the value will be recreated each time and it will look as if it's not assigned only once. Run in production mode to disable reloading and you will see that it's only assigned on the first request (you can do this with for example rackup --env production config.ru).