django + celery的队列，路由与弹性

#celery_app.py
 
#!/usr/bin/env python
# -*- coding: utf-8 -*-
from __future__ import absolute_import
import os
from celery import Celery, platforms
from django.conf import settings
 
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'project.settings')
app = Celery('task')
 
app.config_from_object('config')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)
 
platforms.C_FORCE_ROOT = True

# config.py
 
#!/usr/bin/env python
# -*- coding: utf-8 -*-
 
BROKER_URL = 'redis://***@127.0.0.1:6379/0'
BROKER_TRANSPORT = "redis"
CELERY_RESULT_BACKEND = BROKER_URL
 
CELERY_QUEUES = {
    "task_1": {
        "exchange": "task_1",
        "exchange_type": "direct",
        "routing_key": "task_1"
    },
    "task_2": {
        "routing_key": "task_2",
        "exchange_type": "direct",
        "exchange": "task_2",
    }
}
 
CELERY_ROUTES = {
    'tasks.task_1': {'queue': 'task_1', 'routing_key': 'task_1'},
    'tasks.task_2': {'queue': 'task_2', 'routing_key': 'task_2'}
}

# run_celery.sh
python manage.py celery worker -A celery_app -P gevent -c  -n task_1_worker -Ofair -l error -Q task_1 -f /home/test/logs/celery.log 
 
# 同一个manager.py不能同时起gevent和prefork模式，因为monkey_patch，需要根据入参动态适配
python manage.py celery worker -A celery_app -c  --autoscale=, -n task_2_worker  -Ofair -l error -Q task_2 -f /home/test/logs/celery.log