SpringBoot disruptor高性能队列使用

		<dependency>
            <groupId>com.lmax</groupId>
            <artifactId>disruptor</artifactId>
            <version>3.3.4</version>
        </dependency>

@Data
public class MessageModel {
    private String message;
}

public class HelloEventFactory implements EventFactory<MessageModel> {
    @Override
    public MessageModel newInstance() {
        return new MessageModel();
    }
}

@Slf4j
public class HelloEventHandler implements EventHandler<MessageModel> {
    @Override
    public void onEvent(MessageModel event, long sequence, boolean endOfBatch) {
        try {
            //这里停止1000ms是为了确定消费消息是异步的
            Thread.sleep(1000);
            log.info("消费者处理消息开始");
            if (event != null) {
                log.info("消费者消费的信息是：{}",event);
            }
        } catch (Exception e) {
            log.info("消费者处理消息失败");
        }
        log.info("消费者处理消息结束");
    }
}

@Configuration
public class MqManager {
    @Bean("messageModel")
    public RingBuffer<MessageModel> messageModelRingBuffer() {
        //定义用于事件处理的线程池， Disruptor通过java.util.concurrent.ExecutorSerivce提供的线程来触发consumer的事件处理
        ExecutorService executor = Executors.newFixedThreadPool(2);
        //指定事件工厂
        HelloEventFactory factory = new HelloEventFactory();
        //指定ringbuffer字节大小，必须为2的N次方（能将求模运算转为位运算提高效率），否则将影响效率
        int bufferSize = 1024 * 256;
        //单线程模式，获取额外的性能
        Disruptor<MessageModel> disruptor = new Disruptor<>(factory, bufferSize, executor, ProducerType.SINGLE, new BlockingWaitStrategy());
        //设置事件业务处理器---消费者
        disruptor.handleEventsWith(new HelloEventHandler());
        //启动disruptor线程
        disruptor.start();
        //获取ringbuffer环，用于接取生产者生产的事件
        RingBuffer<MessageModel> ringBuffer = disruptor.getRingBuffer();
        return ringBuffer;
    }
}

@Configuration
public class MqManager {
    @Bean("messageModel")
    public RingBuffer<MessageModel> messageModelRingBuffer() {
        //定义用于事件处理的线程池， Disruptor通过java.util.concurrent.ExecutorSerivce提供的线程来触发consumer的事件处理
        ExecutorService executor = Executors.newFixedThreadPool(2);
        //指定事件工厂
        HelloEventFactory factory = new HelloEventFactory();
        //指定ringbuffer字节大小，必须为2的N次方（能将求模运算转为位运算提高效率），否则将影响效率
        int bufferSize = 1024 * 256;
        //单线程模式，获取额外的性能
        Disruptor<MessageModel> disruptor = new Disruptor<>(factory, bufferSize, executor, ProducerType.SINGLE, new BlockingWaitStrategy());
        //设置事件业务处理器---消费者
        disruptor.handleEventsWith(new HelloEventHandler());
        //启动disruptor线程
        disruptor.start();
        //获取ringbuffer环，用于接取生产者生产的事件
        RingBuffer<MessageModel> ringBuffer = disruptor.getRingBuffer();
        return ringBuffer;
    }
}

	/**
     * 项目内部使用Disruptor做消息队列
     * @throws Exception
     */
    @Test
    public void sayHelloMqTest() throws Exception{
        helloEventProducer.sayHelloMq("Hello world!");
        log.info("消息队列已发送完毕");
        //这里停止2000ms是为了确定是处理消息是异步的
        Thread.sleep(2000);
    }