diff --git a/app/core/config.py b/app/core/config.py
index d81b23a4..38cd33d7 100644
--- a/app/core/config.py
+++ b/app/core/config.py
@@ -114,7 +114,7 @@ class ConfigModel(BaseModel):
     # 数据库连接池获取连接的超时时间（秒）
     DB_POOL_TIMEOUT: int = 30
     # SQLite 连接池大小
-    DB_SQLITE_POOL_SIZE: int = 30
+    DB_SQLITE_POOL_SIZE: int = 10
     # SQLite 连接池溢出数量
     DB_SQLITE_MAX_OVERFLOW: int = 50
     # PostgreSQL 主机地址
@@ -128,7 +128,7 @@ class ConfigModel(BaseModel):
     # PostgreSQL 密码
     DB_POSTGRESQL_PASSWORD: str = "moviepilot"
     # PostgreSQL 连接池大小
-    DB_POSTGRESQL_POOL_SIZE: int = 30
+    DB_POSTGRESQL_POOL_SIZE: int = 10
     # PostgreSQL 连接池溢出数量
     DB_POSTGRESQL_MAX_OVERFLOW: int = 50
 
diff --git a/app/factory.py b/app/factory.py
index 6fec4dac..9408307d 100644
--- a/app/factory.py
+++ b/app/factory.py
@@ -1,5 +1,6 @@
 from fastapi import FastAPI
 from fastapi.middleware.cors import CORSMiddleware
+from fastapi.responses import ORJSONResponse
 
 from app.core.config import settings
 from app.monitoring import setup_prometheus_metrics
@@ -13,7 +14,8 @@ def create_app() -> FastAPI:
     _app = FastAPI(
         title=settings.PROJECT_NAME,
         openapi_url=f"{settings.API_V1_STR}/openapi.json",
-        lifespan=lifespan
+        lifespan=lifespan,
+        default_response_class=ORJSONResponse
     )
 
     # 配置 CORS 中间件
diff --git a/app/helper/redis.py b/app/helper/redis.py
index cd1d6a91..93424ecd 100644
--- a/app/helper/redis.py
+++ b/app/helper/redis.py
@@ -17,6 +17,11 @@ from app.utils.singleton import Singleton
 _complex_serializable_types = set()
 _simple_serializable_types = set()
 
+# 默认连接参数
+_socket_timeout = 30
+_socket_connect_timeout = 5
+_health_check_interval = 60
+
 
 def serialize(value: Any) -> bytes:
     """
@@ -96,9 +101,9 @@ class RedisHelper(metaclass=Singleton):
                 self.client = redis.Redis.from_url(
                     self.redis_url,
                     decode_responses=False,
-                    socket_timeout=30,
-                    socket_connect_timeout=5,
-                    health_check_interval=60,
+                    socket_timeout=_socket_timeout,
+                    socket_connect_timeout=_socket_connect_timeout,
+                    health_check_interval=_health_check_interval,
                 )
                 # 测试连接，确保Redis可用
                 self.client.ping()
@@ -317,10 +322,6 @@ class AsyncRedisHelper(metaclass=Singleton):
     - 所有操作都是异步的
     """
 
-    # 类型缓存集合，针对非容器简单类型
-    _complex_serializable_types = set()
-    _simple_serializable_types = set()
-
     def __init__(self):
         """
         初始化异步Redis助手实例
@@ -337,9 +338,9 @@ class AsyncRedisHelper(metaclass=Singleton):
                 self.client = Redis.from_url(
                     self.redis_url,
                     decode_responses=False,
-                    socket_timeout=30,
-                    socket_connect_timeout=5,
-                    health_check_interval=60,
+                    socket_timeout=_socket_timeout,
+                    socket_connect_timeout=_socket_connect_timeout,
+                    health_check_interval=_health_check_interval,
                 )
                 # 测试连接，确保Redis可用
                 await self.client.ping()