disruptor如何开启多线程消费
时间: 2023-01-29 14:58:54 浏览: 90
Disruptor 是一个并发组件,可以用来快速地在多线程之间传递消息。要开启多线程消费,需要创建多个消费者,并将它们传递给 Disruptor 的构造函数。然后,Disruptor 会将消息分发到这些消费者,让它们在多个线程中并发地处理消息。
例如,下面的代码展示了如何创建并启动一个 Disruptor,并使用多个消费者处理消息:
```
// 创建 Disruptor
Disruptor<MyEvent> disruptor = new Disruptor<>(MyEvent::new, bufferSize, Executors.defaultThreadFactory());
// 创建消费者
MyEventHandler handler1 = new MyEventHandler();
MyEventHandler handler2 = new MyEventHandler();
// 将消费者传递给 Disruptor
disruptor.handleEventsWith(handler1, handler2);
// 启动 Disruptor
disruptor.start();
// 往 Disruptor 中发布消息
RingBuffer<MyEvent> ringBuffer = disruptor.getRingBuffer();
MyEvent event = ringBuffer.get(ringBuffer.next());
event.setData("Hello, Disruptor!");
ringBuffer.publish(ringBuffer.next());
```
在上面的代码中,我们创建了两个 `MyEventHandler` 对象,然后将它们传递给 Disruptor 的 `handleEventsWith` 方法。这样,Disruptor 就会将消息分发到这两个消费者,让它们在多个线程中并发地处理消息。