Django Celery 5.3.1中time_limit与soft_time_limit不生效问题求助

在Django应用中使用Celery 5.3.1的time_limit和soft_time_limit功能时，遇到超时限制完全不生效的问题：执行包含time.sleep(5)的任务始终成功结束，既不触发SoftTimeLimitExceeded异常，也不被强制终止。

Celery配置代码 #

import os

from celery import Celery

# Set the default Django settings module for the 'celery' program.
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'server.settings')

app = Celery('server')

# Using a string here means the worker doesn't have to serialize
# the configuration object to child processes.
# - namespace='CELERY' means all celery-related configuration keys
#   should have a `CELERY_` prefix.
app.config_from_object('django.conf:settings', namespace='CELERY')
app.conf.update(
    task_soft_time_limit=1,
    task_time_limit=1,
)

# Load task modules from all registered Django apps.
app.autodiscover_tasks()


@app.task(bind=True, ignore_result=True)
def debug_task(self):
    print(f'Request: {self.request!r}')

任务代码 #

from celery import shared_task
from celery.exceptions import SoftTimeLimitExceeded
from celery.signals import task_success, task_failure, task_prerun
import time
from server.celery import app

@shared_task
def scrape(domain: str, route: str = None):
    try:
        time.sleep(5)
        
    except SoftTimeLimitExceeded:
        print("Time Limit")

@task_prerun.connect(sender=scrape)
def scrape_prerun_notifier(task_id=None, task=None, *args, **kwargs):
    print("From task_prerun_notifier ==> Running just before add() executes")

@task_success.connect(sender=scrape)
def scrape_success_notifier(sender=None, result=None, **kwargs):
    print("Success")

    task_id = sender.request.id

@task_failure.connect(sender=scrape)
def scrape_failure_notifier(task_id=None, exception=None, *args, **kwargs):
    print("Failure")

已尝试的配置方式 #

• 将任务装饰器改为@app.task(soft_time_limit=1, time_limit=1)
• 在Django设置中配置CELERYD_TASK_SOFT_TIME_LIMIT = 1或CELERY_TASK_SOFT_TIME_LIMIT = 1

启动命令 #

使用以下命令启动Celery Worker：

• celery -A server worker -l info --pool=threads
• celery -A server worker -l info --pool=solo

尚未尝试prefork池，不清楚如何为其启用日志。请问配置中存在什么问题导致超时限制不生效？

内容的提问来源于stack exchange，提问作者Johanes Lee