我认为，从这里查看 Telegram Database Library (Beta) 是个好主意 TDLib(俄语，但用谷歌翻译)和 Java 文档(英文)来自这里.

I think, it is a good idea to take a look at the Telegram Database Library (Beta) from here TDLib (Russian, but translate with Google) and the Java doc (English) from here.

信息有点少，但我想你能看懂.

The information is a little poor yet, but I think you can understand it.