Celery Note3 Calling_tasks

Basics

there is three method to send a task message to broker:

  1. apply_async(args, kwargs[, …])

  2. delay(**args, **kwargs)

  3. calling(call)

so delay is clearly convenient, but if you want to set additional execution options you have to use apply_async.

Tips if the task is not registered in the current process, you can use send_task() to call the task by name instead.

Linking(callbacks/errbacks) aka. Chain

add.apply_async((2,2), link=add.s(16))

in practice the link execution options is considered an internal primitive, and you will probably not use it directly, but use chains instead.