diff --git a/django-stubs/core/cache/backends/base.pyi b/django-stubs/core/cache/backends/base.pyi
index 892c465..7bd7805 100644
--- a/django-stubs/core/cache/backends/base.pyi
+++ b/django-stubs/core/cache/backends/base.pyi
@@ -4,6 +4,7 @@ from django.core.exceptions import ImproperlyConfigured
 
 class InvalidCacheBackendError(ImproperlyConfigured): ...
 class CacheKeyWarning(RuntimeWarning): ...
+class InvalidCacheKey(ValueError): ...
 
 DEFAULT_TIMEOUT: Any
 MEMCACHE_MAX_KEY_LENGTH: int
@@ -12,32 +13,56 @@ def default_key_func(key: Any, key_prefix: str, version: Any) -> str: ...
 def get_key_func(key_func: Optional[Union[Callable, str]]) -> Callable: ...
 
 class BaseCache:
+    _missing_key: object
     default_timeout: Optional[int] = ...
+    _max_entries: int = ...
+    _cull_frequency: int = ...
     key_prefix: str = ...
     version: int = ...
     key_func: Callable = ...
     def __init__(self, params: Dict[str, Any]) -> None: ...
     def get_backend_timeout(self, timeout: Optional[int] = ...) -> Optional[float]: ...
     def make_key(self, key: Any, version: Optional[int] = ...) -> str: ...
+    def validate_key(self, key: Any) -> None: ...
+    def make_and_validate_key(self, key: Any, version: Optional[int] = ...) -> str: ...
     def add(self, key: Any, value: Any, timeout: Optional[int] = ..., version: Optional[int] = ...) -> bool: ...
+    async def aadd(self, key: Any, value: Any, timeout: Optional[int] = ..., version: Optional[int] = ...) -> bool: ...
     def get(self, key: Any, default: Optional[Any] = ..., version: Optional[int] = ...) -> Any: ...
+    async def aget(self, key: Any, default: Optional[Any] = ..., version: Optional[int] = ...) -> Any: ...
     def set(self, key: Any, value: Any, timeout: Optional[int] = ..., version: Optional[int] = ...) -> None: ...
+    async def aset(self, key: Any, value: Any, timeout: Optional[int] = ..., version: Optional[int] = ...) -> None: ...
     def touch(self, key: Any, timeout: Optional[int] = ..., version: Optional[int] = ...) -> bool: ...
+    async def atouch(self, key: Any, timeout: Optional[int] = ..., version: Optional[int] = ...) -> bool: ...
     def delete(self, key: Any, version: Optional[int] = ...) -> None: ...
+    async def adelete(self, key: Any, version: Optional[int] = ...) -> None: ...
     def get_many(self, keys: Iterable[Any], version: Optional[int] = ...) -> Dict[Any, Any]: ...
+    async def aget_many(self, keys: Iterable[Any], version: Optional[int] = ...) -> Dict[Any, Any]: ...
     def get_or_set(
         self, key: Any, default: Optional[Any], timeout: Optional[int] = ..., version: Optional[int] = ...
     ) -> Optional[Any]: ...
+    async def aget_or_set(
+        self, key: Any, default: Optional[Any], timeout: Optional[int] = ..., version: Optional[int] = ...
+    ) -> Optional[Any]: ...
     def has_key(self, key: Any, version: Optional[int] = ...) -> bool: ...
+    async def ahas_key(self, key: Any, version: Optional[int] = ...) -> bool: ...
     def incr(self, key: Any, delta: int = ..., version: Optional[int] = ...) -> int: ...
+    async def aincr(self, key: Any, delta: int = ..., version: Optional[int] = ...) -> int: ...
     def decr(self, key: Any, delta: int = ..., version: Optional[int] = ...) -> int: ...
+    async def adecr(self, key: Any, delta: int = ..., version: Optional[int] = ...) -> int: ...
     def __contains__(self, key: Any) -> bool: ...
     def set_many(
         self, data: Dict[Any, Any], timeout: Optional[int] = ..., version: Optional[int] = ...
     ) -> List[Any]: ...
+    async def aset_many(
+        self, data: Dict[Any, Any], timeout: Optional[int] = ..., version: Optional[int] = ...
+    ) -> List[Any]: ...
     def delete_many(self, keys: Iterable[Any], version: Optional[int] = ...) -> None: ...
+    async def adelete_many(self, keys: Iterable[Any], version: Optional[int] = ...) -> None: ...
     def clear(self) -> None: ...
-    def validate_key(self, key: Any) -> None: ...
+    async def aclear(self) -> None: ...
     def incr_version(self, key: Any, delta: int = ..., version: Optional[int] = ...) -> int: ...
+    async def aincr_version(self, key: Any, delta: int = ..., version: Optional[int] = ...) -> int: ...
     def decr_version(self, key: Any, delta: int = ..., version: Optional[int] = ...) -> int: ...
+    async def adecr_version(self, key: Any, delta: int = ..., version: Optional[int] = ...) -> int: ...
     def close(self, **kwargs: Any) -> None: ...
+    async def aclose(self, **kwargs: Any) -> None: ...