@Configuration
@EnableAsync
public class TaskExecutorConfig {
    private static final int TASK_POOL_SIZE = 32;
    private static final int MAX_POOL_SIZE = 256;
    private static final int QUEUE_SIZE = 16384;

    @Bean(name = "taskExecutor")
    public static Executor taskExecutor() {
        ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(TASK_POOL_SIZE);
        executor.setMaxPoolSize(MAX_POOL_SIZE);
        executor.setQueueCapacity(QUEUE_SIZE);
        executor.setThreadNamePrefix("TaskPool-");
        executor.setRejectedExecutionHandler(new ThreadPoolExecutor.CallerRunsPolicy());
        executor.setAllowCoreThreadTimeOut(true);
        executor.initialize();
        return executor;
    }

}