I work on a page in Django, where users can set custom reminders for different dates (max. 3 per date). The reminders should send via e-mail. Its similar to Google Calendar, where you can set multiple reminders for each event in x-minutes, x-hour or x-days before the date starts. I wonder, how I can solve it combined with Django. Since there will be a lot of users and dates, which should of course also run perfomant. Should I do this with a cron job? Is there a python way?
The other traditional way is to use django-celery: http://pypi.python.org/pypi/django-celery/
You can use the celerybeat command to run periodical tasks. Also you can start pending tasks from a django view.