如何优雅的在 FLASK 初始化 app 时提交一个后台任务？

目前做法是这样，请各位大佬指教。

thread_lock = Lock()
thread = None

def create_app():
    ...
    register_consumer(app)
    return app
    
    
def register_consumer(app):
    global thread
    if not app.debug:
        with thread_lock:
            executor = ThreadPoolExecutor(1)
            thread = executor.submit(alarmHandle, app)