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Move quota cache from database to redis (#2010)

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This commit is contained in:
Raphael Michel
2021-03-29 09:42:27 +02:00
committed by GitHub
parent a927b47b8b
commit d3748a6194
14 changed files with 148 additions and 164 deletions
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4
src/pretix/base/models/event.py
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@@ -657,10 +657,6 @@ class Event(EventMixin, LoggedModel):
oldid = q.pk
q.pk = None
q.event = self
q.cached_availability_state = None
q.cached_availability_number = None
q.cached_availability_paid_orders = None
q.cached_availability_time = None
q.closed = False
q.save()
q.log_action('pretix.object.cloned')

23
src/pretix/base/models/items.py
View File

@@ -17,6 +17,7 @@ from django.utils.functional import cached_property
from django.utils.timezone import is_naive, make_aware, now
from django.utils.translation import gettext_lazy as _, pgettext_lazy
from django_countries.fields import Country
from django_redis import get_redis_connection
from django_scopes import ScopedManager
from i18nfield.fields import I18nCharField, I18nTextField
@@ -25,6 +26,7 @@ from pretix.base.models.base import LoggedModel
from pretix.base.models.fields import MultiStringField
from pretix.base.models.tax import TaxedPrice
from ... import settings
from .event import Event, SubEvent
@@ -1374,10 +1376,6 @@ class Quota(LoggedModel):
blank=True,
verbose_name=_("Variations")
)
cached_availability_state = models.PositiveIntegerField(null=True, blank=True)
cached_availability_number = models.PositiveIntegerField(null=True, blank=True)
cached_availability_paid_orders = models.PositiveIntegerField(null=True, blank=True)
cached_availability_time = models.DateTimeField(null=True, blank=True)
close_when_sold_out = models.BooleanField(
verbose_name=_('Close this quota permanently once it is sold out'),
@@ -1422,14 +1420,10 @@ class Quota(LoggedModel):
self.event.cache.clear()
def rebuild_cache(self, now_dt=None):
self.cached_availability_time = None
self.cached_availability_number = None
self.cached_availability_state = None
self.availability(now_dt=now_dt)
def cache_is_hot(self, now_dt=None):
now_dt = now_dt or now()
return self.cached_availability_time and (now_dt - self.cached_availability_time).total_seconds() < 120
if settings.HAS_REDIS:
rc = get_redis_connection("redis")
rc.hdel(f'quotas:{self.event_id}:availabilitycache', str(self.pk))
self.availability(now_dt=now_dt)
def availability(
self, now_dt: datetime=None, count_waitinglist=True, _cache=None, allow_cache=False
@@ -1452,9 +1446,6 @@ class Quota(LoggedModel):
"""
from ..services.quotas import QuotaAvailability
if allow_cache and self.cache_is_hot() and count_waitinglist:
return self.cached_availability_state, self.cached_availability_number
if _cache and count_waitinglist is not _cache.get('_count_waitinglist', True):
_cache.clear()
@@ -1462,7 +1453,7 @@ class Quota(LoggedModel):
return _cache[self.pk]
qa = QuotaAvailability(count_waitinglist=count_waitinglist, early_out=False)
qa.queue(self)
qa.compute(now_dt=now_dt)
qa.compute(now_dt=now_dt, allow_cache=allow_cache)
res = qa.results[self]
if _cache is not None: