lambda表达式foreach和普通for循环性能比较2

List<DepartmentMember> departmentMemberList = departmentMemberMapper.selectByCondition(condition);

            // lambda表达式：数据量多的时候性能更好
            departmentMemberList.forEach(
                    departmentMember -> {
                            List<User> userList = userMapper.selectListByCondition(departmentMember.getUserId());
                            department1.setUserList(userList);
                    }
            );

            // 普通for循环：数据量少的时候性能更好
            for (DepartmentMember departmentMember1 :
                    departmentMemberList) {
                List<User> userList = userMapper.selectListByCondition(departmentMember1.getUserId());
                department1.setUserList(userList);
            }