celery

基于Python已经有多个科学研究和数据分析库，使用非常方便。结合OpenStack（ http://www.openstack.org ）、RabbitMQ（ http://www.rabbitmq.com ）、Celery（ http://www.celeryproject.org ）可以打造一个实时数据的分析平台。 OpenStack是基于Python开发的云计算平台，可以进行虚拟机的调度和管理，以及数据的虚拟化存储。RabbitMQ是一个消息总线服务器，支持通过消息的数据快速收发和任务数据的调度、分派，Celery实现并行的Worker数据分析模型。三个软件模块的结合可以完成虚拟机管理、任务管理、实时数据收发的相关任务，并使用numPy等科学计算库执行数据分析。 如下图所示： 感觉上，功能满强的哦！以后有时间了，再来慢慢研究。 来源： oschina 链接： https://my.oschina.net/u/2306127/blog/417718

I'm using celery in a server where server time is now BST , and suddenly my scheduled tasks are executing one hour before! Previously, server time was Europe/London which was GMT but now due to day light saving it has become BST (GMT + 1) I've configured celery to use the timezone like: CELERY_TIMEZONE = 'Europe/London' Then when calling tasks, I've also localized value for the eta parameter to 'Europe/London' like this: from datetime import datetime from pytz import timezone locale_to_use = timezone('Europe/London') current_time = locale_to_use.localize(datetime.now()) And used this current

I'm working with djcelery and supervisor. I was running a celery with supervisor and everything worked fine, once I realized that I needed to change it to celery multi everything broke up. If I run celeryd_multi in a terminal it works but always run in background, like supervisor need that the command run in foreground there where the problem is. This is my celery.ini : [program:celery_{{ division }}] command = {{ virtualenv_bin_dir }}/python manage.py celeryd_multi start default mailchimp -c:mailchimp 3 -c:default 5 --loglevel=info --logfile={{ log_dir }}/celery/%n.log --pidfile={{ run_dir }}

I'm using Celery from a webapp to start a task hierarchy. Tasks I'm using the following tasks: task_a task_b task_c notify_user A Django view starts several task_a instances. Each of them does some processing and then starts several task_b instances. And each of those does some processing and then starts several task_c instances. To visualize: Goals My goal is to execute all the tasks, and to run a callback function as soon as the entire hierarchy has finished. Additionally, I want to be able to pass data from the lowest tasks to the top level. The view should just "kick off" the tasks and

When I am trying to start celery worker in Django app as: celery -A myApp worker -l info I get following error: File "/home/alexander/.pyenv/versions/3.5.1/envs/myApp/lib/python3.5/site-packages/celery/utils/collections.py", line 134, in __getattr__ type(self).__name__, k)) AttributeError: 'Settings' object has no attribute 'worker_state_db' If you know how to solve it please write your idea! Alexander Tyapkov The bug appears if an exception is raised while parsing settings. Such as when we set Django's SECRET_KEY (or any other setting) via an environment variable: SECRET_KEY = os.environ[

注：.pyc也有一定的保护性，容易被反编译出源码... 项目发布时，为防止源码泄露，需要对源码进行一定的保护机制，本文使用Cython将.py文件转为.so进行保护。这一方法，虽仍能被反编译，但难度会比较大。另外，Cython是Python的超集。 自行安装Cython 1，创建complie.py文件 from Cython.Build import cythonizefrom Cython.Distutils import build_extfrom setuptools import setupfrom setuptools.extension import Extensionsetup( ext_modules=cythonize( [ Extension('project.*', ['project/*.py']), Extension('project.api.*', ['project/api/*.py']), Extension('project.api.bizs.*', ['project/api/bizs/*.py']), Extension('project.api.data.export*', ['project/api/data/export/*.py']), Extension('project.api.exceptions.*', ['project

1.目录结构 　　　 在settings配置中添加 INSTALLED_APPS = [ 'celery', ] 2.celery.py import os import django#导入django的环境这样就可以在celery中运行orm os.environ.setdefault("DJANGO_SETTINGS_MODULE", "repi.settings") django.setup() from celery import Celery#本地的redis链接 broker='redis://127.0.0.1:6379/3' backend='redis://127.0.0.1:6379/4' app=Celery('celery_stask',broker=broker,backend=backend,include=['celery_stask.stask'])#celery_stask.stask任务文件 # app=Celery('celery_stask',include=['celery_stask.stask']) # 时区 app.conf.timezone = 'Asia/Shanghai' # 是否使用UTC app.conf.enable_utc = False from datetime import timedelta app.conf