discourse/app/jobs/scheduled/dashboard_stats.rb

module Jobs
  class DashboardStats < Jobs::Scheduled
    include Jobs::Stats

    every 30.minutes

    def execute(args)
      problems_started_at = AdminDashboardData.problems_started_at
      if problems_started_at && problems_started_at < 2.days.ago
        # If there have been problems reported on the dashboard for a while,
        # send a message to admins no more often than once per week.
        GroupMessage.create(Group[:admins].name, :dashboard_problems, {limit_once_per: 7.days.to_i})
      end

      stats = AdminDashboardData.fetch_stats
      set_cache(AdminDashboardData, stats)
      stats
    end
  end
end