Allow to reduce the interval of some cronjobs (#1753)

src/pretix/base/services/orders.py

@@ -53,6 +53,7 @@ from pretix.base.signals import (
 )
 from pretix.celery_app import app
 from pretix.helpers.models import modelcopy
+from pretix.helpers.periodic import minimum_interval
 
 error_messages = {
     'unavailable': _('Some of the products you selected were no longer available. '
@@ -988,6 +989,7 @@ def expire_orders(sender, **kwargs):
 
 @receiver(signal=periodic_task)
 @scopes_disabled()
+@minimum_interval(minutes_after_success=60)
 def send_expiry_warnings(sender, **kwargs):
     today = now().replace(hour=0, minute=0, second=0)
     days = None

src/pretix/base/services/quotas.py

@@ -18,6 +18,7 @@ from pretix.base.models import (
 )
 from pretix.celery_app import app
 
+from ...helpers.periodic import minimum_interval
 from ..signals import periodic_task, quota_availability
 
 
@@ -403,6 +404,7 @@ class QuotaAvailability:
 
 
 @receiver(signal=periodic_task)
+@minimum_interval(minutes_after_success=60)
 def build_all_quota_caches(sender, **kwargs):
     refresh_quota_caches.apply_async()