build_cache_ruby_3.rb

class Main < Sinatra::Base
  get '/' do
    # make call to the database
    result = number_of_users
    "Hello World! #{result[:count]}"
  end

  def number_of_users
    Cache.fetch "number_of_users" do
      FakeDatabase.connection "select count(*) from users"
    end
  end
end