⚡️ Improve caching strategy

router.py

@@ -1,6 +1,7 @@
 from os import environ
 from typing import Annotated
 from contextlib import asynccontextmanager
+from hashlib import md5
 
 from aiohttp import ClientSession
 
@@ -29,6 +30,8 @@ async def lifespan(_):
     FastAPICache.init(RedisBackend(redis), prefix="muslimproapi-cache")
     yield
 
+cache_expire: int = 10800
+
 description: str = """
 # Muslim Pro Scrapper 🕌
 Simple scrapper using aiohttp and pyquery to get Praytime for moslem people
@@ -98,7 +101,26 @@ async def where_ip(session: ClientSession, ip_address: str) -> str:
     }
     async with session.get(url+ip_address, params=params, headers=headers) as response:
         res: dict = await response.json()
-        return f"{res['city']}, {res['regionName']}, {res['country']}, {res['continent']}"
+        return f"{res['city']}, {res['regionName']}, {res['country']}"
+
+def request_key_builder(
+    _,
+    namespace: str = "",
+    *,
+    request: Request = None,
+    **kwargs,
+):  
+    from re import split
+    parts = split(r'[,\s]+', request.url.path.removeprefix('/'))
+    city = parts[0] if len(parts) > 0 else request.url.path
+
+    md5_hash = md5()
+    md5_hash.update(city.lower().encode('utf-8'))
+
+    return ":".join([
+        namespace,
+        md5_hash.hexdigest()
+    ])
 
 
 class ModelResponse(BaseModel):
@@ -231,14 +253,14 @@ async def get_location_based(request: Request) -> RedirectResponse:
           'content': {
               'application/json': {
                   'example': {
-                      "status_code": 422,
+                      "status_code": 400,
                       "message": "Bad request, please check your datatypes or make sure to fill all parameter",
                       "data": "null"
                   }
               }
           }}
 })
-@cache(expire=10800)
+@cache(expire=cache_expire, key_builder=request_key_builder)
 async def main_app(
         query: Annotated[str, Path(
             title="Location query", description="Pass your city/country name")],