perf: improved campaigns suggestion perfomance by caching some things

solution/services/backend/apps/mlscore/models.py

@@ -1,3 +1,6 @@
+from typing import Any
+
+from django.core.cache import cache
 from django.db import models
 
 from apps.advertiser.models import Advertiser
@@ -21,6 +24,15 @@ class Mlscore(BaseModel):
     def __str__(self) -> str:
         return f"{self.advertiser.name} | {self.client.login}"
 
+    def save(self, *args: Any, **kwargs: Any) -> None:
+        super().save(*args, **kwargs)
+
+        self.setup_cache()
+
+    def setup_cache(self) -> None:
+        cache.add(f"mlscore_{self.client_id}_{self.advertiser_id}", self.score)
+        cache.set(f"mlscore_{self.client_id}_{self.advertiser_id}", self.score)
+
     class Meta:
         unique_together = (
             "advertiser",