我已经用fixeddelaystring=300000（5分钟）定义了3个作业，并且我已经定义了3个这些作业将独立执行。因此，我创建了一个异步实现。起初，每项工作都做得很好，但到那时，他们开始耽搁了很多时间。每次执行大约5seg，但下一次执行在10分钟后开始运行。偶尔15到18分钟。
例如：

@EnableScheduling
public class AppConfig {
  @Async('threadPoolTaskExecutor')
  @Scheduled(fixedDelayString=15000)
  public void doSomething1() {
    // something that should run periodically
  }

  @Async('threadPoolTaskExecutor')
  @Scheduled(fixedDelayString=300000)
  public void doSomething2() {
    // something that should run periodically
  }

  @Async('threadPoolTaskExecutor')
  @Scheduled(fixedDelayString=300000)
  public void doSomething3() {
    // this job begins to have interval larger in each execution
  }
}

@Configuration
@EnableAsync
public class AsyncConf {
  @Bean("threadPoolTaskExecutor")
  public TaskExecutor getAsyncExecutor() {
      ThreadPoolTaskExecutor executor = new ThreadPoolTaskExecutor();
      executor.setCorePoolSize(3);
      executor.setMaxPoolSize(1000);
      executor.setThreadNamePrefix("Async-");
      return executor;
  }
}
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