reactor自定义RejectedExecutionHandler

最新推荐文章于 2025-06-10 16:24:38 发布

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最新推荐文章于 2025-06-10 16:24:38 发布

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原文链接：https://my.oschina.net/go4it/blog/880507

本文详细介绍了如何通过自定义ThreadPoolExecutorDispatcher来配置线程池的核心参数，包括线程池大小、任务队列长度、线程名称前缀及拒绝策略等，并展示了具体的配置实例。

为什么80%的码农都做不了架构师？>>>

##参数 reactor-core-2.0.8.RELEASE-sources.jar!/reactor/core/dispatch/ThreadPoolExecutorDispatcher.java


/**
	 * Create a new {@literal ThreadPoolExecutorDispatcher} with the given size, backlog, name, and {@link
	 * java.util.concurrent.RejectedExecutionHandler}.
	 *
	 * @param poolSize
	 * 		the pool size
	 * @param backlog
	 * 		the backlog size
	 * @param threadName
	 * 		the name prefix to use when creating threads
	 * @param rejectedExecutionHandler
	 * 		the {@code RejectedExecutionHandler} to use when jobs can't be submitted to the thread pool
	 */
	public ThreadPoolExecutorDispatcher(int poolSize,
	                                    int backlog,
	                                    String threadName,
	                                    BlockingQueue<Runnable> workQueue,
	                                    RejectedExecutionHandler rejectedExecutionHandler) {
		super(poolSize, backlog);
		this.workQueue = workQueue;
		this.executor = new ThreadPoolExecutor(
				poolSize,
				poolSize,
				0L,
				TimeUnit.MILLISECONDS,
				workQueue,
				new NamedDaemonThreadFactory(threadName, getContext()),
				rejectedExecutionHandler
		);
	}

配置文件的size，对应ThreadPoolExecutor的corePoolSize以及maximumPoolSize

##自定义ThreadPoolExecutorDispatcher

Dispatcher dispatcher = new ThreadPoolExecutorDispatcher(5, 2048,"dispatcherGroup",
                new LinkedBlockingQueue<Runnable>(2048),
                new ThreadPoolExecutor.DiscardOldestPolicy());
EventBus eventBus = EventBus.create(eventBusEnv,dispatcher);

转载于:https://my.oschina.net/go4it/blog/880507