fix(core): improve argument types of Cache

Author: Rizhiy

.github/workflows/test_and_version.yml

@@ -32,7 +32,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12"]
+        python-version: ['3.10', '3.11', '3.12']
     steps:
       - uses: actions/checkout@v3
       - name: Set up Python ${{ matrix.python-version }}

class_cache/core.py

@@ -1,16 +1,20 @@
 from abc import abstractmethod
-from typing import Any, ClassVar, Iterable
+from typing import Any, Callable, ClassVar, Iterable
 
 from replete.consistent_hash import consistent_hash
 
-from class_cache.backends import PickleBackend
-from class_cache.types import CacheInterface, KeyType, ValueType
+from class_cache.backends import SQLiteBackend
+from class_cache.types import CacheInterface, IdType, KeyType, ValueType
 
-DEFAULT_BACKEND_TYPE = PickleBackend
+DEFAULT_BACKEND_TYPE = SQLiteBackend
 
 
 class Cache(CacheInterface[KeyType, ValueType]):
-    def __init__(self, id_: str | int | None = None, backend_type: type[CacheInterface] = DEFAULT_BACKEND_TYPE) -> None:
+    def __init__(
+        self,
+        id_: IdType = None,
+        backend_type: type[CacheInterface] | Callable[[IdType], CacheInterface] = DEFAULT_BACKEND_TYPE,
+    ) -> None:
         super().__init__(id_)
         self._backend = backend_type(id_)
         # TODO: Implement max_size logic