web-dev-qa-db-fra.com

Plusieurs tâches Spring @ Scheduled simultanément

J'essaie d'exécuter plusieurs tâches planifiées en même temps au démarrage de printemps, mais en pratique, elles exécutent la mise en file d'attente (l'une après l'autre, pas en parallèle)

Voici mon service simple:

import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype.Service;

@Service
public class MyScheduleDemo {

    @Scheduled(fixedDelay = 5000, initialDelay = 1000)
    public void taskA() throws InterruptedException {
        System.out.println("[A] Starting new cycle of scheduled task");

        // Simulate an operation that took 5 seconds.
        long startTime = System.currentTimeMillis();
        while (System.currentTimeMillis() - startTime <= 5000);

        System.out.println("[A] Done the cycle of scheduled task");
    }

    @Scheduled(fixedDelay = 5000, initialDelay = 2000)
    public void taskB() throws InterruptedException {
        System.out.println("[B] Starting new cycle of scheduled task");

        System.out.println("[B] Done the cycle of scheduled task");
    }
}

Production:

[A] Starting new cycle of scheduled task
[A] Done the cycle of scheduled task
[B] Starting new cycle of scheduled task
[B] Done the cycle of scheduled task

Mais, cela devrait être comme:

[A] Starting new cycle of scheduled task
[B] Starting new cycle of scheduled task
[B] Done the cycle of scheduled task
[A] Done the cycle of scheduled task

Qu'est-ce que je fais mal?

Voici ma configuration:

@Configuration
@EnableAsync
@EnableScheduling
public class AsyncConfiguration implements AsyncConfigurer {

    @Override
    @Bean(name = "taskExecutor")
    public Executor getAsyncExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(6);
        executor.setMaxPoolSize(50);
        executor.setQueueCapacity(100);
        executor.setThreadNamePrefix("customer-Executor-");
        executor.initialize();
        return executor;
    }
}
springspring-bootscheduled-tasks
12
scheduleds

Vous devez utiliser TaskScheduler pour votre usage

@Bean
public ThreadPoolTaskScheduler threadPoolTaskScheduler() {
    ThreadPoolTaskScheduler threadPoolTaskScheduler = new ThreadPoolTaskScheduler();
    threadPoolTaskScheduler.setPoolSize(THREADS_COUNT);
    return threadPoolTaskScheduler;
}

Où THREADS_COUNT - nombre total de tâches qui doivent être exécutées en parallèle. Si je vous comprends bien, vous n'avez que 2 emplois, vous avez donc besoin de 2 threads

13
Mykola Yashchenko