diff --git a/src/configuration.py b/src/configuration.py
index 00bb3174..53d0d49a 100644
--- a/src/configuration.py
+++ b/src/configuration.py
@@ -144,9 +144,11 @@ def database_configuration(self) -> DatabaseConfiguration:
         return self._configuration.database
 
     @property
-    def conversation_cache(self) -> Cache | None:
+    def conversation_cache(self) -> Cache:
         """Return the conversation cache."""
-        if self._conversation_cache is None and self._configuration is not None:
+        if self._configuration is None:
+            raise LogicError("logic error: configuration is not loaded")
+        if self._conversation_cache is None:
             self._conversation_cache = CacheFactory.conversation_cache(
                 self._configuration.conversation_cache
             )
diff --git a/tests/unit/test_configuration.py b/tests/unit/test_configuration.py
index 40cf3f85..83e3cb18 100644
--- a/tests/unit/test_configuration.py
+++ b/tests/unit/test_configuration.py
@@ -6,6 +6,8 @@
 import pytest
 from configuration import AppConfig, LogicError
 from models.config import CustomProfile, ModelContextProtocolServer
+from cache.sqlite_cache import SQLiteCache
+from cache.in_memory_cache import InMemoryCache
 
 
 # pylint: disable=broad-exception-caught,protected-access
@@ -76,6 +78,10 @@ def test_default_configuration() -> None:
         # try to read property
         _ = cfg.conversation_cache_configuration  # pylint: disable=pointless-statement
 
+    with pytest.raises(Exception, match="logic error: configuration is not loaded"):
+        # try to read property
+        _ = cfg.conversation_cache  # pylint: disable=pointless-statement
+
 
 def test_configuration_is_singleton() -> None:
     """Test that configuration is singleton."""
@@ -591,3 +597,81 @@ def test_configuration_with_all_customizations(tmpdir: Path) -> None:
     assert fetched_prompts is not None and fetched_prompts.get(
         "default"
     ) == expected_prompts.get("default")
+
+
+def test_configuration_with_sqlite_conversation_cache(tmpdir: Path) -> None:
+    """Test loading configuration from YAML file with conversation cache configuration."""
+    cfg_filename = tmpdir / "config.yaml"
+    with open(cfg_filename, "w", encoding="utf-8") as fout:
+        fout.write(
+            """
+name: test service
+service:
+  host: localhost
+  port: 8080
+  auth_enabled: false
+  workers: 1
+  color_log: true
+  access_log: true
+llama_stack:
+  use_as_library_client: false
+  url: http://localhost:8321
+  api_key: test-key
+user_data_collection:
+  feedback_enabled: false
+conversation_cache:
+  type: "sqlite"
+  sqlite:
+    db_path: ":memory:"
+            """
+        )
+
+    cfg = AppConfig()
+    cfg.load_configuration(str(cfg_filename))
+
+    assert cfg.conversation_cache_configuration is not None
+    assert cfg.conversation_cache_configuration.type == "sqlite"
+    assert cfg.conversation_cache_configuration.sqlite is not None
+    assert cfg.conversation_cache_configuration.postgres is None
+    assert cfg.conversation_cache_configuration.memory is None
+    assert cfg.conversation_cache is not None
+    assert isinstance(cfg.conversation_cache, SQLiteCache)
+
+
+def test_configuration_with_in_memory_conversation_cache(tmpdir: Path) -> None:
+    """Test loading configuration from YAML file with conversation cache configuration."""
+    cfg_filename = tmpdir / "config.yaml"
+    with open(cfg_filename, "w", encoding="utf-8") as fout:
+        fout.write(
+            """
+name: test service
+service:
+  host: localhost
+  port: 8080
+  auth_enabled: false
+  workers: 1
+  color_log: true
+  access_log: true
+llama_stack:
+  use_as_library_client: false
+  url: http://localhost:8321
+  api_key: test-key
+user_data_collection:
+  feedback_enabled: false
+conversation_cache:
+  type: "memory"
+  memory:
+    max_entries: 42
+            """
+        )
+
+    cfg = AppConfig()
+    cfg.load_configuration(str(cfg_filename))
+
+    assert cfg.conversation_cache_configuration is not None
+    assert cfg.conversation_cache_configuration.type == "memory"
+    assert cfg.conversation_cache_configuration.sqlite is None
+    assert cfg.conversation_cache_configuration.postgres is None
+    assert cfg.conversation_cache_configuration.memory is not None
+    assert cfg.conversation_cache is not None
+    assert isinstance(cfg.conversation_cache, InMemoryCache)