Fix_daniil

models.py

@@ -7,4 +7,4 @@ class User:
     id: int
     name: str
     email: Optional[str] = None
-    meta: Dict[str, Any] = {}
+    meta: Dict[str, Any] = field(default_factory=dict)

repo.py

@@ -1,18 +1,26 @@
 import time
+import threading
+from typing import Any, Dict
+
 
 
 class InMemoryRepo:
     def __init__(self):
-        self.storage = {}
-        self.last_saved_at = None
+        self.storage : Dict[Any, Any] = {}
+        self.last_saved_at : float | None = None
+        self._lock = threading.Lock()
 
-    def save(self, key, value):
-        time.sleep(0.05)
-        self.storage[key] = value
-        self.last_saved_at = time.time()
+    def save(self, key: Any, value: Any) -> None:
+        with self._lock:
+            time.sleep(0.05)
+            self.storage[key] = value
+            self.last_saved_at = time.time()
 
-    def get(self, key, default=None):
-        return self.storage.get(key, default)
+    def all(self) -> Dict[Any, Any]:
+        with self._lock:
+            return dict(self._storage)
 
-    def all(self):
-        return self.storage
+
+    @property
+    def last_saved_at(self) -> float | None:
+        return self._last_saved_at