+ InMemoryCache for GlobalSettings

store/models.py

@@ -2,7 +2,7 @@ from decimal import Decimal
 import random
 import string
 from io import BytesIO
-from threading import local as LocalContext
+
 
 from django.conf import settings
 from django.contrib.admin import display
@@ -18,11 +18,10 @@ from django.utils.translation import gettext_lazy as _
 from django_cleanup import cleanup
 
 from store.utils import create_preview, concat_not_null_values
+from utils.cache import InMemoryCache
 
 
 class GlobalSettings(models.Model):
-    context = LocalContext()
-
     # currency
     yuan_rate = models.DecimalField('Курс CNY/RUB', max_digits=10, decimal_places=2, default=0)
     # Chinadelivery
@@ -38,18 +37,20 @@ class GlobalSettings(models.Model):
         # Store only one instance of GlobalSettings
         self.__class__.objects.exclude(id=self.id).delete()
         super().save(*args, **kwargs)
-        GlobalSettings.context.cached = self
+
+        InMemoryCache.set('GlobalSettings', self)
 
     def __str__(self) -> str:
         return f'GlobalSettings for {self.id}'
 
     @classmethod
     def load(cls) -> 'GlobalSettings':
-        if hasattr(cls.context, 'cached'):
-            return cls.context.cached
+        cached = InMemoryCache.get('GlobalSettings')
+        if cached:
+            return cached
 
         obj, _ = cls.objects.get_or_create(id=1)
-        cls.context.cached = obj
+        InMemoryCache.set('GlobalSettings', obj)
         return obj
 
 

utils/cache.py

@@ -0,0 +1,13 @@
+import threading
+
+thread_local = threading.local()
+
+
+class InMemoryCache:
+    @classmethod
+    def get(cls, key: str):
+        return getattr(thread_local, key, None)
+
+    @classmethod
+    def set(cls, key: str, value):
+        setattr(thread_local, key, value)