在我正在开发的应用程序上，我希望我的用户保存他们正在阅读的书的列表。寻找一些API /服务来检索我在Google图书上获得的图书信息。阅读Google的ToS，在“我阅读的内容禁止”部分中
Unless expressly permitted by the content owner or by applicable law, you will
not, and will not permit your end users or others acting on your behalf to, do
the following with content returned from the APIs:
1. Scrape, build databases, or otherwise create permanent copies of such
content, or keep cached copies longer than permitted by the cache header;
2. Copy, translate, modify, create a derivative work of, sell, lease, lend,
convey, distribute, publicly display, or sublicense to any third party;
...
我的问题是：我可以在我的应用程序数据库中存储我的用户的图书ID列表吗？
示例。
User -> Slexom
read_books-> ["An_dDQAAQBAJ","pMLlwQEACAAJ", ...]
除该ID外，没有保存任何其他与书籍有关的信息。与使用Google提供的其余API相比，任何一本书籍都可以收回。 万一我无法保存它，是否有Google图书的有效替代品？