详解django中使用定时任务的方法

pip install apscheduler

from apscheduler.scheduler import Scheduler
from django.core.cache import cache
# 实例化
sched = Scheduler()  
 
# 每30秒执行一次
@sched.interval_schedule(seconds=30)
def sched_test():
  """
  测试-定时将随机数保存到redis中
  :return:
  """
  seed = "123456789"
  sa = []
  for i in range(4):
    sa.append(random.choice(seed))
  code = ''.join(sa)
  cache.set("test_"+code, code)

pip install django-crontab

INSTALLED_APPS = (
'django_crontab',
)

import random
 
from django.core.cache import cache
 
def test():
  """
  测试-定时将随机数保存到redis中
  :return:
  """
  seed = "123456789"
  sa = []
  for i in range(4):
    sa.append(random.choice(seed))
  code = ''.join(sa)
  cache.set("test_"+code, code)

import random
 
from django.core.management.  import  Command
from django.core.cache import cache
 
class Command( Command):
  """
  自定义命令
  """
  def handle(self, *args, **options):
    """
    自定义命令
    :return:
    """
    seed = "123456789"
    sa = []
    for i in range(4):
      sa.append(random.choice(seed))
    code = ''.join(sa)
    cache.set("test_"+code, code)

# 运行定时函数
CRONJOBS = [
  ('*/1 * * * *', 'appname.test_crontab.test','>>/home/python/test_crontab.log')
]
 
# 运行定时命令
CRONJOBS = [
  ('*/1 * * * *', 'django.core.management.call_command', ['test'], {}, '>> /home/python/test.log'),
]

* * * * * command
分钟(0-59) 小时(0-23) 每个月的哪一天(1-31) 月份(1-12) 周几(0-6) shell脚本或者命令

0 6 * * * commands >> /tmp/test.log # 每天早上6点执行, 并将信息追加到test.log中
0 */2 * * * commands # 每隔2小时执行一次

python manage.py crontab add

python manage.py crontab show: 显示当前的定时任务
python manage.py crontab remove: 删除所有定时任务