如何在NgRx效果中固定执行顺序？

import { Injectable } from '@angular/core';
import { Actions, createEffect, ofType } from '@ngrx/effects';
import { concatMap } from 'rxjs/operators';

@Injectable()
export class MyEffects {
  effect1$ = createEffect(() =>
    this.actions$.pipe(
      ofType('ACTION_1'),
      concatMap(() => {
        // 执行效果1的逻辑
        return this.myService.effect1().pipe(
          map(() => ({ type: 'EFFECT_1_SUCCESS' })),
          catchError(() => of({ type: 'EFFECT_1_ERROR' }))
        );
      })
    )
  );

  effect2$ = createEffect(() =>
    this.actions$.pipe(
      ofType('ACTION_2'),
      concatMap(() => {
        // 执行效果2的逻辑
        return this.myService.effect2().pipe(
          map(() => ({ type: 'EFFECT_2_SUCCESS' })),
          catchError(() => of({ type: 'EFFECT_2_ERROR' }))
        );
      })
    )
  );

  constructor(private actions$: Actions, private myService: MyService) {}
}