How to solve the problem of scheduled tasks not being executed in schedule in springboot

@schedule annotation is a commonly used scheduled task annotation in springboot. It is simple and convenient to use. However, if there are many scheduled tasks, or some tasks are very time-consuming, it will affect the execution of other scheduled tasks, because schedule is single-threaded by default. , when a task is executed, other tasks cannot be executed. The solution is to reconfigure the schedule and change it to multi-thread execution. Just add the following configuration class.

import org.springframework.boot.autoconfigure.batch.BatchProperties;
import org.springframework.context.annotation.Configuration;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.scheduling.annotation.SchedulingConfigurer;
import org.springframework.scheduling.config.ScheduledTaskRegistrar;
import java.lang.reflect.Method;
import java.util.concurrent.Executors;
@Configuration
public class ScheduleConfig implements SchedulingConfigurer {
  @Override
  public void configureTasks(ScheduledTaskRegistrar taskRegistrar) {
    Method[] methods = BatchProperties.Job.class.getMethods();
    int defaultPoolSize = 3;
    int corePoolSize = 0;
    if (methods != null && methods.length > 0) {
      for (Method method : methods) {
        Scheduled annotation = method.getAnnotation(Scheduled.class);
        if (annotation != null) {
          corePoolSize++;
        }
      }
      if (defaultPoolSize > corePoolSize)
        corePoolSize = defaultPoolSize;
    }
    taskRegistrar.setScheduler(Executors.newScheduledThreadPool(corePoolSize));
  }
}

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