@Configuration
@EnableAsync
public class AsyncConfig {

  private static final String THREAD_POOL_TASK_EXECUTOR = "threadPoolTaskExecutor";

  @Bean(THREAD_POOL_TASK_EXECUTOR)
  public TaskExecutor getAsyncExecutor() {
  ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
        executor.setCorePoolSize(20);
        executor.setMaxPoolSize(1000);
        executor.setWaitForTasksToCompleteOnShutdown(true);
        executor.setThreadNamePrefix("Async-");
        return executor;
  }
}

  spring
task:
    execution:
      pool:
        core-size: 20
        max-size: 1000
      shutdown:
        await-termination: false
    scheduling:
      thread-name-prefix: Async-

@Configuration
@EnableAsync
@Getter
@Setter
public class AsyncConfig {

  private static final String THREAD_POOL_TASK_EXECUTOR = "threadPoolTaskExecutor";
  @Value("${spring.task.execution.pool.core-size}")
  private int corePoolSize;
  @Value("${spring.task.execution.pool.max-size}")
  private int maxPoolSize;
  @Value("${spring.task.execution.shutdown.await-termination}")
  private boolean waitForTasksToCompleteOnShutdown;
  @Value("${spring.task.scheduling.thread-name-prefix}")
  private String threadNamePrefix;

  @Bean(THREAD_POOL_TASK_EXECUTOR)
  public TaskExecutor getAsyncExecutor() {
    ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
    executor.setCorePoolSize(corePoolSize);
    executor.setMaxPoolSize(maxPoolSize);
    executor.setWaitForTasksToCompleteOnShutdown(waitForTasksToCompleteOnShutdown);
    executor.setThreadNamePrefix(threadNamePrefix);
    return executor;
  }
}