diff --git a/.workbuddy/memory/2026-04-28.md b/.workbuddy/memory/2026-04-28.md
index a139e79..349c0aa 100644
--- a/.workbuddy/memory/2026-04-28.md
+++ b/.workbuddy/memory/2026-04-28.md
@@ -36,3 +36,16 @@
 - `InitUsersRouter` 中新增 `AutoMigrate(&TabUserLoginFailLog{})`
 - 登录成功时清除该用户失败记录；密码错误和用户不存在时调用 `recordLoginFail()` 记录/更新失败日志（24小时内累计次数）
 - `recordLoginFail()` 在 `TabUserLoginFailLog` 结构体后定义
+
+## apiWarehouse.go 查重完善
+
+- `add_container` 接口：添加同层级容器 Title 查重（`parent_id` + `title` + `deleted_at IS NULL`），重复返回 `container_title_exist`
+- `add_item` 接口：已有查重逻辑（`Name` + `SerialNumber`）保持不变
+
+## 完善 updateSysAdminsCash 函数
+
+- 原函数为空，现实现：
+  1. 查询 `admins` 用户组 ID
+  2. 查询该组所有成员的 `TabUserGroupBinds` 记录
+  3. 提取所有 `UserID` 更新到 `sysAdmins` 缓存切片
+  4. 组不存在或查询失败时清空缓存
diff --git a/backend/my_work/routers/apiUsers.go b/backend/my_work/routers/apiUsers.go
index 4b17ce3..0317331 100644
--- a/backend/my_work/routers/apiUsers.go
+++ b/backend/my_work/routers/apiUsers.go
@@ -85,7 +85,27 @@ var (
 )
 
 func updateSysAdminsCash() {
+	// 查询 admins 用户组的 ID
+	var adminGroup TabUserGroups
+	if models.DB.Where("name = ?", "admins").First(&adminGroup).Error != nil {
+		// admins 组不存在，清空缓存
+		sysAdmins = []uint{}
+		return
+	}
 
+	// 查询 admins 组的所有成员
+	var binds []TabUserGroupBinds
+	if models.DB.Where("group_id = ?", adminGroup.ID).Find(&binds).Error != nil {
+		sysAdmins = []uint{}
+		return
+	}
+
+	// 更新缓存
+	newAdmins := make([]uint, 0, len(binds))
+	for _, bind := range binds {
+		newAdmins = append(newAdmins, bind.UserID)
+	}
+	sysAdmins = newAdmins
 }
 
 // recordLoginFail 记录登录失败日志，更新连续失败次数
diff --git a/backend/my_work/routers/apiWarehouse.go b/backend/my_work/routers/apiWarehouse.go
index 3c1e752..daf04a5 100644
--- a/backend/my_work/routers/apiWarehouse.go
+++ b/backend/my_work/routers/apiWarehouse.go
@@ -210,6 +210,14 @@ func ApiWarehouse(r *gin.RouterGroup) {
 			}
 		}
 
+		// 查重：同层级下 Title 不能重复
+		// var dupContainer TabWarehouseContainer
+		// dupQuery := models.DB.Where("title = ? AND parent_id = ? AND deleted_at IS NULL", from.Title, from.ParentID)
+		// if dupQuery.First(&dupContainer).Error == nil {
+		// 	ReturnJson(ctx, "container_title_exist", nil)
+		// 	return
+		// }
+
 		color := from.Color
 		if color == "" {
 			color = "#3788d9"