revert json cache

backend/src/overpass/caching_strategy.py

@@ -2,7 +2,6 @@
 import os
 import xml.etree.ElementTree as ET
 import hashlib
-import ujson
 
 from ..constants import OSM_CACHE_DIR
 
@@ -35,43 +34,6 @@ class CachingStrategyBase:
         """Clean up or close any resources used by the caching strategy."""
 
 
-class JSONCache(CachingStrategyBase):
-    """
-    A caching strategy that stores and retrieves data in JSON format.
-
-    This class provides methods to cache data as JSON files in a specified directory.
-    The directory is automatically suffixed with '_JSON' to distinguish it from other
-    caching strategies. The data is stored and retrieved using JSON serialization.
-
-    Args:
-        cache_dir (str): The base directory where JSON cache files will be stored.
-                         Defaults to 'OSM_CACHE_DIR' with a '_JSON' suffix.
-
-    Methods:
-        get(key): Retrieve cached data from a JSON file associated with the given key.
-        set(key, value): Store data in a JSON file with the specified key.
-    """
-    def __init__(self, cache_dir=OSM_CACHE_DIR):
-        # Add the class name as a suffix to the directory
-        self._cache_dir = f'{cache_dir}_JSON'
-        if not os.path.exists(self._cache_dir):
-            os.makedirs(self._cache_dir)
-
-    def _filename(self, key):
-        return os.path.join(self._cache_dir, f'{key}.json')
-
-    def get(self, key):
-        filename = self._filename(key)
-        if os.path.exists(filename):
-            with open(filename, 'r', encoding='utf-8') as file:
-                return ujson.load(file)
-        return None
-
-    def set(self, key, value):
-        with open(self._filename(key), 'w', encoding='utf-8') as file:
-            ujson.dump(value, file)
-
-
 class XMLCache(CachingStrategyBase):
     """
     A caching strategy that stores and retrieves data in XML format.
@@ -138,7 +100,6 @@ class CachingStrategy:
     __strategy = XMLCache()  # Default caching strategy
     __strategies = {
         'XML': XMLCache,
-        'JSON': JSONCache,
     }
 
     @classmethod