diff --git a/app/runtime/config.py b/app/runtime/config.py
index 36c8222e5..93e5b77cb 100644
--- a/app/runtime/config.py
+++ b/app/runtime/config.py
@@ -329,10 +329,10 @@ class ConfigModel(BaseModel):
     CACHE_BACKEND_URL: Optional[str] = "redis://localhost:6379"
     # Redis 缓存最大内存限制，未配置时，如开启大内存模式时为 "1024mb"，未开启时为 "256mb"
     CACHE_REDIS_MAXMEMORY: Optional[str] = None
-    # Redis 连接池最大连接数
-    CACHE_REDIS_MAX_CONNECTIONS: int = 256
+    # Redis 单个连接池最大连接数；异步连接池按事件循环分别应用该上限
+    CACHE_REDIS_MAX_CONNECTIONS: int = 512
     # Redis 连接池耗尽时等待可用连接的时间（秒）
-    CACHE_REDIS_POOL_TIMEOUT: int = 3
+    CACHE_REDIS_POOL_TIMEOUT: int = 10
     # 全局图片缓存，将媒体图片缓存到本地
     GLOBAL_IMAGE_CACHE: bool = False
     # 全局图片缓存保留天数
diff --git a/tests/test_cache_system.py b/tests/test_cache_system.py
index e1cb36ca4..358b834b0 100644
--- a/tests/test_cache_system.py
+++ b/tests/test_cache_system.py
@@ -23,7 +23,7 @@ from app.runtime.cache import (
     TTLCache,
     cached,
 )
-from app.runtime.config import settings
+from app.runtime.config import ConfigModel, settings
 
 
 def test_file_backend_items_keep_relative_keys_and_bytes(tmp_path):
@@ -979,6 +979,14 @@ def test_redis_helpers_watch_pool_settings():
     assert "BIG_MEMORY_MODE" in AsyncRedisHelper.CONFIG_WATCH
 
 
+def test_redis_pool_defaults_cover_startup_concurrency():
+    """Redis 默认连接池应为启动期并发读写留出容量和等待时间。"""
+    config = ConfigModel()
+
+    assert config.CACHE_REDIS_MAX_CONNECTIONS == 512
+    assert config.CACHE_REDIS_POOL_TIMEOUT == 10
+
+
 def test_async_file_backend_missing_region_has_no_items(tmp_path):
     """
     异步文件缓存缺失区域时应返回空迭代，而不是伪造空 key。