Cache classifier loading with lru_cache

src/documents/classifier.py

@@ -4,6 +4,7 @@ import logging
 import pickle
 import re
 import warnings
+from functools import lru_cache
 from hashlib import sha256
 from pathlib import Path
 from typing import TYPE_CHECKING
@@ -52,6 +53,7 @@ class ClassifierModelCorruptError(Exception):
     pass
 
 
+@lru_cache(maxsize=1)
 def load_classifier(*, raise_exception: bool = False) -> DocumentClassifier | None:
     if not settings.MODEL_FILE.is_file():
         logger.debug(