Background tasks are done using Cloud Tasks. There's one example (sending emails) of how to do it in this project template. See the following files for more detail:
- utils/task_helper.py
- tasks/send_email_task.py
Whenever you'll want to create a background task, use this function from utils/task_helper.py:
run_background_task(relative_path, payload)
Make sure you have environment variables MY_GAE_REGION and MY_APP_URL set in app.yaml.
The task queues are set in queue.yaml. Currently two queues are set, default and email. If you need additional
ones, edit the queue.yaml file.
P.S.: When you'll do a deployment to Google Cloud, you need to include all your yaml files in the command:
gcloud app deploy app.yaml queue.yaml --version production
The same goes for other YAML files, such as cron.yaml or index.yaml, if you'll use them.