Django+Celery+Redis实现异步任务（发送邮件）

安装如下依赖库

pip install Celery
pip install django-celery
pip install django-redis

还要安装本地的Redis服务

settings.py 文件中添加如下代码（需要163邮箱开通SMTP服务）

import djcelery
djcelery.setup_loader()

BROKER_URL = 'redis://localhost:6379'
CELERY_RESULT_BACKEND = 'redis://localhost:6379'

EMAIL_BACKEND = 'django.core.mail.backends.smtp.EmailBackend'
EMAIL_HOST = 'smtp.163.com'
EMAIL_PORT = 25
EMAIL_HOST_USER = 'your [e-mail]'
EMAIL_HOST_PASSWORD = 'your password'
EMAIL_FROM = '<your [e-mail]>'
EMAIL_TO = 'send [e-mail]'

INSTALLED_APPS = (
　　　　　　
　　　　...
　　　　'djcelery'
)

与settings.py同级目录下的__init__.py添加如下代码

import celery
from .celery import app as celery_app

在settings.py同级目录下创建celery.py，并添加如下代码

from __future__ import absolute_import
import os
from celery import Celery
from django.conf import settings

os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'myshop.settings')
app = Celery('myshop')
app.config_from_object('django.conf:settings')
app.autodiscover_tasks(lambda: settings.INSTALLED_APPS)

在你的app目录下创建tasks.py，并添加你需要执行的任务（在这里是发送邮件）

# coding: utf-8
from celery import task
from django.core.mail import send_mail
from .models import Order
from myshop import settings

@task()
def send_email():
    """
    Task to send an e-mail notification when an order is successfully created.
    """
    title = 'Django发送邮件'
    message = ('本邮件为程序所发，请忽视').decode('utf-8')
    mail_sent = send_mail(title, message, settings.EMAIL_FROM, [settings.EMAIL_TO])
    return mail_sent

在你的view.py中调用，执行该任务

from .tasks import order_createddef order(request):

　　.....　　
　　# launch asynchronous task
　　send_email.delay(order.id)
　　.....