Test

@Configuration

@EnableAsync

public class AsyncConfig {

@Bean("taskExecutor")

public Executor taskExecutor() {

ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();

executor.setCorePoolSize(20); // only 20 run at same time

executor.setMaxPoolSize(20);

executor.setQueueCapacity(10000);

executor.setThreadNamePrefix("task-");

executor.initialize();

return executor;

}

}