Async 配置線程池

 

 

須要注意一下 ThreadPoolTaskExecutor  和 Executor  區別

 

@Configuration
public class ExecutorConfig {
    /** Set the ThreadPoolExecutor's core pool size. */
    private int corePoolSize = 10;
    /** Set the ThreadPoolExecutor's maximum pool size. */
    private int maxPoolSize = 100;
    /** Set the capacity for the ThreadPoolExecutor's BlockingQueue. */
    private int queueCapacity = 100;

    @Bean
    public ThreadPoolTaskExecutor callerRunsExecutorService() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(corePoolSize);
        executor.setMaxPoolSize(maxPoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setThreadNamePrefix("RunsExecutor-");

        // rejection-policy：當pool已經達到max size的時候，如何處理新任務
        // CALLER_RUNS：不在新線程中執行任務，而是有調用者所在的線程來執行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.AbortPolicy());
        executor.setKeepAliveSeconds(60);
        executor.initialize();
        return executor;
    }

    @Bean("commonTaskExecutor")
    public Executor commonRunsAsync() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(corePoolSize);
        executor.setMaxPoolSize(maxPoolSize);
        executor.setQueueCapacity(queueCapacity);
        executor.setThreadNamePrefix("common---");

        // rejection-policy：當pool已經達到max size的時候，如何處理新任務
        // CALLER_RUNS：不在新線程中執行任務，而是有調用者所在的線程來執行
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.AbortPolicy());
        executor.setKeepAliveSeconds(60);
        executor.initialize();
        return executor;
    }
}