I have a model that contains the following field class EventConfig(models.Model): end_date = models.DateTimeField(blank=True, null=True) I have celery installed that's sending periodic emails and triggering other tasks at set time intervals e.g every hour or at 12pm. However, if I want to trigger an email as exactly when 'end_date' is reached, what is the best way to do this? I realise I could set a Celery schedule to run every minute to check the date, but is running a batch job every 60 seconds perpetually, the best approach or would this have drawbacks? Is there a way for example to set the crontab schedule to read from a list of values so that I could so something like schedule_list = EventConfig.objects.all().values_list(end_date, flat=True) or schedule_list.append(self.end_date) whenever a model instance is saved, and have Celery read from 'schedule_list' so the batch jobs then only fire at the correct times? Or is there a better way to do this either with or without celery? Continue reading...
