diff --git a/api/configs/middleware/__init__.py b/api/configs/middleware/__init__.py
index 4751b9601..591c24cbe 100644
--- a/api/configs/middleware/__init__.py
+++ b/api/configs/middleware/__init__.py
@@ -300,8 +300,7 @@ class DatasetQueueMonitorConfig(BaseSettings):
 
 class MiddlewareConfig(
     # place the configs in alphabet order
-    CeleryConfig,
-    DatabaseConfig,
+    CeleryConfig,  # Note: CeleryConfig already inherits from DatabaseConfig
     KeywordStoreConfig,
     RedisConfig,
     # configs of storage and storage providers
diff --git a/api/configs/middleware/vdb/clickzetta_config.py b/api/configs/middleware/vdb/clickzetta_config.py
index 04f81e25f..61bc01202 100644
--- a/api/configs/middleware/vdb/clickzetta_config.py
+++ b/api/configs/middleware/vdb/clickzetta_config.py
@@ -1,9 +1,10 @@
 from typing import Optional
 
-from pydantic import BaseModel, Field
+from pydantic import Field
+from pydantic_settings import BaseSettings
 
 
-class ClickzettaConfig(BaseModel):
+class ClickzettaConfig(BaseSettings):
     """
     Clickzetta Lakehouse vector database configuration
     """
diff --git a/api/configs/middleware/vdb/matrixone_config.py b/api/configs/middleware/vdb/matrixone_config.py
index 9400612d8..3e7ce7b67 100644
--- a/api/configs/middleware/vdb/matrixone_config.py
+++ b/api/configs/middleware/vdb/matrixone_config.py
@@ -1,7 +1,8 @@
-from pydantic import BaseModel, Field
+from pydantic import Field
+from pydantic_settings import BaseSettings
 
 
-class MatrixoneConfig(BaseModel):
+class MatrixoneConfig(BaseSettings):
     """Matrixone vector database configuration."""
 
     MATRIXONE_HOST: str = Field(default="localhost", description="Host address of the Matrixone server")
diff --git a/api/configs/packaging/__init__.py b/api/configs/packaging/__init__.py
index f511e20e6..b8d723ef4 100644
--- a/api/configs/packaging/__init__.py
+++ b/api/configs/packaging/__init__.py
@@ -1,6 +1,6 @@
 from pydantic import Field
 
-from configs.packaging.pyproject import PyProjectConfig, PyProjectTomlConfig
+from configs.packaging.pyproject import PyProjectTomlConfig
 
 
 class PackagingInfo(PyProjectTomlConfig):
diff --git a/api/configs/remote_settings_sources/apollo/client.py b/api/configs/remote_settings_sources/apollo/client.py
index 877ff8409..e30e6218a 100644
--- a/api/configs/remote_settings_sources/apollo/client.py
+++ b/api/configs/remote_settings_sources/apollo/client.py
@@ -4,8 +4,9 @@ import logging
 import os
 import threading
 import time
-from collections.abc import Mapping
+from collections.abc import Callable, Mapping
 from pathlib import Path
+from typing import Any
 
 from .python_3x import http_request, makedirs_wrapper
 from .utils import (
@@ -25,13 +26,13 @@ logger = logging.getLogger(__name__)
 class ApolloClient:
     def __init__(
         self,
-        config_url,
-        app_id,
-        cluster="default",
-        secret="",
-        start_hot_update=True,
-        change_listener=None,
-        _notification_map=None,
+        config_url: str,
+        app_id: str,
+        cluster: str = "default",
+        secret: str = "",
+        start_hot_update: bool = True,
+        change_listener: Callable[[str, str, str, Any], None] | None = None,
+        _notification_map: dict[str, int] | None = None,
     ):
         # Core routing parameters
         self.config_url = config_url
@@ -47,17 +48,17 @@ class ApolloClient:
         # Private control variables
         self._cycle_time = 5
         self._stopping = False
-        self._cache = {}
-        self._no_key = {}
-        self._hash = {}
+        self._cache: dict[str, dict[str, Any]] = {}
+        self._no_key: dict[str, str] = {}
+        self._hash: dict[str, str] = {}
         self._pull_timeout = 75
         self._cache_file_path = os.path.expanduser("~") + "/.dify/config/remote-settings/apollo/cache/"
-        self._long_poll_thread = None
+        self._long_poll_thread: threading.Thread | None = None
         self._change_listener = change_listener  # "add" "delete" "update"
         if _notification_map is None:
             _notification_map = {"application": -1}
         self._notification_map = _notification_map
-        self.last_release_key = None
+        self.last_release_key: str | None = None
         # Private startup method
         self._path_checker()
         if start_hot_update:
@@ -68,7 +69,7 @@ class ApolloClient:
         heartbeat.daemon = True
         heartbeat.start()
 
-    def get_json_from_net(self, namespace="application"):
+    def get_json_from_net(self, namespace: str = "application") -> dict[str, Any] | None:
         url = "{}/configs/{}/{}/{}?releaseKey={}&ip={}".format(
             self.config_url, self.app_id, self.cluster, namespace, "", self.ip
         )
@@ -88,7 +89,7 @@ class ApolloClient:
             logger.exception("an error occurred in get_json_from_net")
             return None
 
-    def get_value(self, key, default_val=None, namespace="application"):
+    def get_value(self, key: str, default_val: Any = None, namespace: str = "application") -> Any:
         try:
             # read memory configuration
             namespace_cache = self._cache.get(namespace)
@@ -104,7 +105,8 @@ class ApolloClient:
             namespace_data = self.get_json_from_net(namespace)
             val = get_value_from_dict(namespace_data, key)
             if val is not None:
-                self._update_cache_and_file(namespace_data, namespace)
+                if namespace_data is not None:
+                    self._update_cache_and_file(namespace_data, namespace)
                 return val
 
             # read the file configuration
@@ -126,23 +128,23 @@ class ApolloClient:
     # to ensure the real-time correctness of the function call.
     # If the user does not have the same default val twice
     # and the default val is used here, there may be a problem.
-    def _set_local_cache_none(self, namespace, key):
+    def _set_local_cache_none(self, namespace: str, key: str) -> None:
         no_key = no_key_cache_key(namespace, key)
         self._no_key[no_key] = key
 
-    def _start_hot_update(self):
+    def _start_hot_update(self) -> None:
         self._long_poll_thread = threading.Thread(target=self._listener)
         # When the asynchronous thread is started, the daemon thread will automatically exit
         # when the main thread is launched.
         self._long_poll_thread.daemon = True
         self._long_poll_thread.start()
 
-    def stop(self):
+    def stop(self) -> None:
         self._stopping = True
         logger.info("Stopping listener...")
 
     # Call the set callback function, and if it is abnormal, try it out
-    def _call_listener(self, namespace, old_kv, new_kv):
+    def _call_listener(self, namespace: str, old_kv: dict[str, Any] | None, new_kv: dict[str, Any] | None) -> None:
         if self._change_listener is None:
             return
         if old_kv is None:
@@ -168,12 +170,12 @@ class ApolloClient:
         except BaseException as e:
             logger.warning(str(e))
 
-    def _path_checker(self):
+    def _path_checker(self) -> None:
         if not os.path.isdir(self._cache_file_path):
             makedirs_wrapper(self._cache_file_path)
 
     # update the local cache and file cache
-    def _update_cache_and_file(self, namespace_data, namespace="application"):
+    def _update_cache_and_file(self, namespace_data: dict[str, Any], namespace: str = "application") -> None:
         # update the local cache
         self._cache[namespace] = namespace_data
         # update the file cache
@@ -187,7 +189,7 @@ class ApolloClient:
             self._hash[namespace] = new_hash
 
     # get the configuration from the local file
-    def _get_local_cache(self, namespace="application"):
+    def _get_local_cache(self, namespace: str = "application") -> dict[str, Any]:
         cache_file_path = os.path.join(self._cache_file_path, f"{self.app_id}_configuration_{namespace}.txt")
         if os.path.isfile(cache_file_path):
             with open(cache_file_path) as f:
@@ -195,8 +197,8 @@ class ApolloClient:
             return result
         return {}
 
-    def _long_poll(self):
-        notifications = []
+    def _long_poll(self) -> None:
+        notifications: list[dict[str, Any]] = []
         for key in self._cache:
             namespace_data = self._cache[key]
             notification_id = -1
@@ -236,7 +238,7 @@ class ApolloClient:
         except Exception as e:
             logger.warning(str(e))
 
-    def _get_net_and_set_local(self, namespace, n_id, call_change=False):
+    def _get_net_and_set_local(self, namespace: str, n_id: int, call_change: bool = False) -> None:
         namespace_data = self.get_json_from_net(namespace)
         if not namespace_data:
             return
@@ -248,7 +250,7 @@ class ApolloClient:
             new_kv = namespace_data.get(CONFIGURATIONS)
             self._call_listener(namespace, old_kv, new_kv)
 
-    def _listener(self):
+    def _listener(self) -> None:
         logger.info("start long_poll")
         while not self._stopping:
             self._long_poll()
@@ -266,13 +268,13 @@ class ApolloClient:
         headers["Timestamp"] = time_unix_now
         return headers
 
-    def _heart_beat(self):
+    def _heart_beat(self) -> None:
         while not self._stopping:
             for namespace in self._notification_map:
                 self._do_heart_beat(namespace)
             time.sleep(60 * 10)  # 10 minutes
 
-    def _do_heart_beat(self, namespace):
+    def _do_heart_beat(self, namespace: str) -> None:
         url = f"{self.config_url}/configs/{self.app_id}/{self.cluster}/{namespace}?ip={self.ip}"
         try:
             code, body = http_request(url, timeout=3, headers=self._sign_headers(url))
@@ -292,7 +294,7 @@ class ApolloClient:
             logger.exception("an error occurred in _do_heart_beat")
             return None
 
-    def get_all_dicts(self, namespace):
+    def get_all_dicts(self, namespace: str) -> dict[str, Any] | None:
         namespace_data = self._cache.get(namespace)
         if namespace_data is None:
             net_namespace_data = self.get_json_from_net(namespace)
diff --git a/api/configs/remote_settings_sources/apollo/python_3x.py b/api/configs/remote_settings_sources/apollo/python_3x.py
index 6a5f38199..d21e0ecff 100644
--- a/api/configs/remote_settings_sources/apollo/python_3x.py
+++ b/api/configs/remote_settings_sources/apollo/python_3x.py
@@ -2,6 +2,8 @@ import logging
 import os
 import ssl
 import urllib.request
+from collections.abc import Mapping
+from typing import Any
 from urllib import parse
 from urllib.error import HTTPError
 
@@ -19,9 +21,9 @@ urllib.request.install_opener(opener)
 logger = logging.getLogger(__name__)
 
 
-def http_request(url, timeout, headers={}):
+def http_request(url: str, timeout: int | float, headers: Mapping[str, str] = {}) -> tuple[int, str | None]:
     try:
-        request = urllib.request.Request(url, headers=headers)
+        request = urllib.request.Request(url, headers=dict(headers))
         res = urllib.request.urlopen(request, timeout=timeout)
         body = res.read().decode("utf-8")
         return res.code, body
@@ -33,9 +35,9 @@ def http_request(url, timeout, headers={}):
         raise e
 
 
-def url_encode(params):
+def url_encode(params: dict[str, Any]) -> str:
     return parse.urlencode(params)
 
 
-def makedirs_wrapper(path):
+def makedirs_wrapper(path: str) -> None:
     os.makedirs(path, exist_ok=True)
diff --git a/api/configs/remote_settings_sources/apollo/utils.py b/api/configs/remote_settings_sources/apollo/utils.py
index f5b82908e..cff187954 100644
--- a/api/configs/remote_settings_sources/apollo/utils.py
+++ b/api/configs/remote_settings_sources/apollo/utils.py
@@ -1,5 +1,6 @@
 import hashlib
 import socket
+from typing import Any
 
 from .python_3x import url_encode
 
@@ -10,7 +11,7 @@ NAMESPACE_NAME = "namespaceName"
 
 
 # add timestamps uris and keys
-def signature(timestamp, uri, secret):
+def signature(timestamp: str, uri: str, secret: str) -> str:
     import base64
     import hmac
 
@@ -19,16 +20,16 @@ def signature(timestamp, uri, secret):
     return base64.b64encode(hmac_code).decode()
 
 
-def url_encode_wrapper(params):
+def url_encode_wrapper(params: dict[str, Any]) -> str:
     return url_encode(params)
 
 
-def no_key_cache_key(namespace, key):
+def no_key_cache_key(namespace: str, key: str) -> str:
     return f"{namespace}{len(namespace)}{key}"
 
 
 # Returns whether the obtained value is obtained, and None if it does not
-def get_value_from_dict(namespace_cache, key):
+def get_value_from_dict(namespace_cache: dict[str, Any] | None, key: str) -> Any | None:
     if namespace_cache:
         kv_data = namespace_cache.get(CONFIGURATIONS)
         if kv_data is None:
@@ -38,7 +39,7 @@ def get_value_from_dict(namespace_cache, key):
     return None
 
 
-def init_ip():
+def init_ip() -> str:
     ip = ""
     s = None
     try:
diff --git a/api/configs/remote_settings_sources/nacos/__init__.py b/api/configs/remote_settings_sources/nacos/__init__.py
index c6efd6f3a..f3e630675 100644
--- a/api/configs/remote_settings_sources/nacos/__init__.py
+++ b/api/configs/remote_settings_sources/nacos/__init__.py
@@ -11,16 +11,16 @@ logger = logging.getLogger(__name__)
 
 from configs.remote_settings_sources.base import RemoteSettingsSource
 
-from .utils import _parse_config
+from .utils import parse_config
 
 
 class NacosSettingsSource(RemoteSettingsSource):
     def __init__(self, configs: Mapping[str, Any]):
         self.configs = configs
-        self.remote_configs: dict[str, Any] = {}
+        self.remote_configs: dict[str, str] = {}
         self.async_init()
 
-    def async_init(self):
+    def async_init(self) -> None:
         data_id = os.getenv("DIFY_ENV_NACOS_DATA_ID", "dify-api-env.properties")
         group = os.getenv("DIFY_ENV_NACOS_GROUP", "nacos-dify")
         tenant = os.getenv("DIFY_ENV_NACOS_NAMESPACE", "")
@@ -33,18 +33,15 @@ class NacosSettingsSource(RemoteSettingsSource):
             logger.exception("[get-access-token] exception occurred")
             raise
 
-    def _parse_config(self, content: str):
+    def _parse_config(self, content: str) -> dict[str, str]:
         if not content:
             return {}
         try:
-            return _parse_config(self, content)
+            return parse_config(content)
         except Exception as e:
             raise RuntimeError(f"Failed to parse config: {e}")
 
     def get_field_value(self, field: FieldInfo, field_name: str) -> tuple[Any, str, bool]:
-        if not isinstance(self.remote_configs, dict):
-            raise ValueError(f"remote configs is not dict, but {type(self.remote_configs)}")
-
         field_value = self.remote_configs.get(field_name)
         if field_value is None:
             return None, field_name, False
diff --git a/api/configs/remote_settings_sources/nacos/http_request.py b/api/configs/remote_settings_sources/nacos/http_request.py
index db9db84a8..6401c5830 100644
--- a/api/configs/remote_settings_sources/nacos/http_request.py
+++ b/api/configs/remote_settings_sources/nacos/http_request.py
@@ -17,11 +17,17 @@ class NacosHttpClient:
         self.ak = os.getenv("DIFY_ENV_NACOS_ACCESS_KEY")
         self.sk = os.getenv("DIFY_ENV_NACOS_SECRET_KEY")
         self.server = os.getenv("DIFY_ENV_NACOS_SERVER_ADDR", "localhost:8848")
-        self.token = None
+        self.token: str | None = None
         self.token_ttl = 18000
         self.token_expire_time: float = 0
 
-    def http_request(self, url, method="GET", headers=None, params=None):
+    def http_request(
+        self, url: str, method: str = "GET", headers: dict[str, str] | None = None, params: dict[str, str] | None = None
+    ) -> str:
+        if headers is None:
+            headers = {}
+        if params is None:
+            params = {}
         try:
             self._inject_auth_info(headers, params)
             response = requests.request(method, url="http://" + self.server + url, headers=headers, params=params)
@@ -30,7 +36,7 @@ class NacosHttpClient:
         except requests.RequestException as e:
             return f"Request to Nacos failed: {e}"
 
-    def _inject_auth_info(self, headers, params, module="config"):
+    def _inject_auth_info(self, headers: dict[str, str], params: dict[str, str], module: str = "config") -> None:
         headers.update({"User-Agent": "Nacos-Http-Client-In-Dify:v0.0.1"})
 
         if module == "login":
@@ -45,16 +51,17 @@ class NacosHttpClient:
             headers["timeStamp"] = ts
         if self.username and self.password:
             self.get_access_token(force_refresh=False)
-            params["accessToken"] = self.token
+            if self.token is not None:
+                params["accessToken"] = self.token
 
-    def __do_sign(self, sign_str, sk):
+    def __do_sign(self, sign_str: str, sk: str) -> str:
         return (
             base64.encodebytes(hmac.new(sk.encode(), sign_str.encode(), digestmod=hashlib.sha1).digest())
             .decode()
             .strip()
         )
 
-    def get_sign_str(self, group, tenant, ts):
+    def get_sign_str(self, group: str, tenant: str, ts: str) -> str:
         sign_str = ""
         if tenant:
             sign_str = tenant + "+"
@@ -63,7 +70,7 @@ class NacosHttpClient:
         sign_str += ts  # Directly concatenate ts without conditional checks, because the nacos auth header forced it.
         return sign_str
 
-    def get_access_token(self, force_refresh=False):
+    def get_access_token(self, force_refresh: bool = False) -> str | None:
         current_time = time.time()
         if self.token and not force_refresh and self.token_expire_time > current_time:
             return self.token
@@ -77,6 +84,7 @@ class NacosHttpClient:
             self.token = response_data.get("accessToken")
             self.token_ttl = response_data.get("tokenTtl", 18000)
             self.token_expire_time = current_time + self.token_ttl - 10
+            return self.token
         except Exception:
             logger.exception("[get-access-token] exception occur")
             raise
diff --git a/api/configs/remote_settings_sources/nacos/utils.py b/api/configs/remote_settings_sources/nacos/utils.py
index f3372563b..2d52b46af 100644
--- a/api/configs/remote_settings_sources/nacos/utils.py
+++ b/api/configs/remote_settings_sources/nacos/utils.py
@@ -1,4 +1,4 @@
-def _parse_config(self, content: str) -> dict[str, str]:
+def parse_config(content: str) -> dict[str, str]:
     config: dict[str, str] = {}
     if not content:
         return config
diff --git a/api/pyrightconfig.json b/api/pyrightconfig.json
index dfffdb8cf..8694f44fa 100644
--- a/api/pyrightconfig.json
+++ b/api/pyrightconfig.json
@@ -1,5 +1,7 @@
 {
-  "include": ["."],
+  "include": [
+    "."
+  ],
   "exclude": [
     "tests/",
     "migrations/",
@@ -19,10 +21,9 @@
     "events/",
     "contexts/",
     "constants/",
-    "configs/",
     "commands.py"
   ],
   "typeCheckingMode": "strict",
   "pythonVersion": "3.11",
   "pythonPlatform": "All"
-}
+}
\ No newline at end of file