From d4bdf6b75dad236cccf98377e1e54c3c2b640c36 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20van=20Noord?=
 <13665637+DanielNoord@users.noreply.github.com>
Date: Thu, 15 Sep 2022 11:50:58 +0200
Subject: [PATCH 1/3] Create a ``CacheManager`` class to manage storing and
 clearing caches

---
 ChangeLog             |  2 ++
 astroid/_cache.py     | 22 ++++++++++++++++++++++
 astroid/decorators.py |  3 ++-
 astroid/manager.py    |  3 +++
 4 files changed, 29 insertions(+), 1 deletion(-)
 create mode 100644 astroid/_cache.py

diff --git a/ChangeLog b/ChangeLog
index 142a9a7e0..8c6803eb4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -17,7 +17,9 @@ What's New in astroid 2.12.10?
 ==============================
 Release date: TBA
 
+* ``decorators.cached`` now gets its cache cleared by calling ``AstroidManager.clear_cache``.
 
+  Refs #1780
 
 What's New in astroid 2.12.9?
 =============================
diff --git a/astroid/_cache.py b/astroid/_cache.py
new file mode 100644
index 000000000..d1b916838
--- /dev/null
+++ b/astroid/_cache.py
@@ -0,0 +1,22 @@
+from __future__ import annotations
+
+from typing import Any
+
+
+class CacheManager:
+    """Manager of caches, to be used as a singleton."""
+
+    def __init__(self) -> None:
+        self.dict_caches: list[dict[Any, Any]] = []
+
+    def clear_all_caches(self) -> None:
+        """Clear all caches."""
+        for dict_cache in self.dict_caches:
+            dict_cache.clear()
+
+    def add_dict_cache(self, cache: dict[Any, Any]) -> None:
+        """Add a dictionary cache to the manager."""
+        self.dict_caches.append(cache)
+
+
+CACHE_MANAGER = CacheManager()
diff --git a/astroid/decorators.py b/astroid/decorators.py
index c4f44dcd2..e9cc3292c 100644
--- a/astroid/decorators.py
+++ b/astroid/decorators.py
@@ -15,7 +15,7 @@
 
 import wrapt
 
-from astroid import util
+from astroid import _cache, util
 from astroid.context import InferenceContext
 from astroid.exceptions import InferenceError
 
@@ -34,6 +34,7 @@ def cached(func, instance, args, kwargs):
     cache = getattr(instance, "__cache", None)
     if cache is None:
         instance.__cache = cache = {}
+        _cache.CACHE_MANAGER.add_dict_cache(cache)
     try:
         return cache[func]
     except KeyError:
diff --git a/astroid/manager.py b/astroid/manager.py
index 77d22503c..f0932d54d 100644
--- a/astroid/manager.py
+++ b/astroid/manager.py
@@ -16,6 +16,7 @@
 from importlib.util import find_spec, module_from_spec
 from typing import TYPE_CHECKING, ClassVar
 
+from astroid._cache import CACHE_MANAGER
 from astroid.const import BRAIN_MODULES_DIRECTORY
 from astroid.exceptions import AstroidBuildingError, AstroidImportError
 from astroid.interpreter._import import spec, util
@@ -391,6 +392,8 @@ def clear_cache(self) -> None:
         # NB: not a new TransformVisitor()
         AstroidManager.brain["_transform"].transforms = collections.defaultdict(list)
 
+        CACHE_MANAGER.clear_all_caches()
+
         for lru_cache in (
             LookupMixIn.lookup,
             _cache_normalize_path_,

From 00793195e50dab6c45496eac35a8b87cbec7b9eb Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Thu, 15 Sep 2022 09:52:48 +0000
Subject: [PATCH 2/3] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 astroid/_cache.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/astroid/_cache.py b/astroid/_cache.py
index d1b916838..e4d319ad4 100644
--- a/astroid/_cache.py
+++ b/astroid/_cache.py
@@ -1,3 +1,6 @@
+# Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
+# For details: https://github.com/PyCQA/astroid/blob/main/LICENSE
+# Copyright (c) https://github.com/PyCQA/astroid/blob/main/CONTRIBUTORS.txt
 from __future__ import annotations
 
 from typing import Any

From fc8e437739f8102a4270b2ab484a17d8c72644e7 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Dani=C3=ABl=20van=20Noord?=
 <13665637+DanielNoord@users.noreply.github.com>
Date: Thu, 15 Sep 2022 11:53:29 +0200
Subject: [PATCH 3/3] Update astroid/_cache.py

---
 astroid/_cache.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/astroid/_cache.py b/astroid/_cache.py
index e4d319ad4..fc4ddc205 100644
--- a/astroid/_cache.py
+++ b/astroid/_cache.py
@@ -1,6 +1,7 @@
 # Licensed under the LGPL: https://www.gnu.org/licenses/old-licenses/lgpl-2.1.en.html
 # For details: https://github.com/PyCQA/astroid/blob/main/LICENSE
 # Copyright (c) https://github.com/PyCQA/astroid/blob/main/CONTRIBUTORS.txt
+
 from __future__ import annotations
 
 from typing import Any