python celery 异步学习

1.运行redis

2.安装celery：pip install celery[redis]

3.vim task.py

import time
from celery import Celery

broker = 'redis://localhost:6379/1'
backend = 'redis://localhost:6379/2' 
app = Celery("my_task",broker=broker,backend=backend) #my_task 是用来生成任务名的前缀  

@app.task 
def add(x,y): 
    print("enter call func....") 
    time.sleep(4) 
    return x + y

4.vim app.py

import time
from task import add

if __name__ == '__main__':
    print("start task....")
    result = add.delay(10,20)
    print(result)

5.启动celery worker

celery worker -A task【任务文件名】 -l INFO

6.运行app.py或者执行add函数

python下：

启动worker：celery worker -A celery_app -l INFO
启动定时任务：celery beat -A celery_app -l INFO

用一条命令同时启动worker和定时任务：celery -B -A celery_app worker -l INFO

djangp下：

启动worker：python manage.py celery worker -l INFO
启动定时任务：python manage.py celery beat -l INFO

使用flower监控任务：pip install flower
启动：python manage.py celery flower
认证启动：python manage.py celery flower --basic_auth=chenjiaen:root123456.
打开页面连接：http://115.159.118.25:5555

使用 supervisor 管理进程
生成配置文件：echo_supervisord_conf > conf/supervisord.conf