main.rb

module Foo
  module Bar
    LOG = Logger.new()
    
    def self.run()
      thread_pool = Concurrent::FixedThreadPool.new(10, max_queue:50)
      until mirrors.empty?
        mirror = mirror.shift
        Concurrent::Future.execute(executor: thread_pool) { Sync.run() }
      end
    end
  end
end