fix: add async cache to async operations and sync cache (stdlib) for sync operations

routers/tariffs.py

@@ -1,15 +1,16 @@
 from fastapi import APIRouter
-from functools import lru_cache
+import aiofiles
 import json
-import asyncio
+from async_lru import alru_cache
 
 router = APIRouter(prefix='/api/v1', tags=['tariffs'])
 
-@lru_cache(maxsize=1)
-def get_tariffs_sync():
-    with open('data/tariffs.json', 'r', encoding='utf-8') as f:
-        return json.load(f)
+@alru_cache(maxsize=1, ttl=86400)
+async def get_tariffs_sync():
+    async with aiofiles.open('data/tariffs.json', 'r', encoding='utf-8') as f:
+        content = await f.read()
+    return json.loads(content)
 
 @router.get('/tariffs')
 async def get_tariffs():
-    return await asyncio.to_thread(get_tariffs_sync)
+    return await get_tariffs_sync()