gistfile1.rb

require 'active_support/configurable'

module Statistics

  include ActiveSupport::Configurable

  config_accessor :end_point
  
  self.config.server ||= "https://statistics.appprova.com.br"

  def self.some_method(args = {}, params = {})
      uri = URI.parse("#{Statistics.config.server}/api/bla/bla")
      ...
  end

end

## Se quiser mudar o server default
## Initializer
config/initializers/statistics.rb

require 'statistics'

Statistics.configure do |config|
  config.server = "http://someother.appprova.com.br"
end

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