docs: @PostConstruct
      public void start() {
          threadFactory = Executors.defaultThreadFactory();
          disruptor = new Disruptor<>(Registration.FACTORY,
                  ringSize,
                  threadFactory,
                  ProducerType.MULTI,
                  new BlockingWaitStrategy());
          disruptor.handleEventsWith(new ContainerEventHandler());
          ringBuffer = disruptor.start();
      }