doris structure detail and implementation principle

[lec ssmi]

Hi:
   It seems like there is no user level mailing list. So, the question can
only be published here.
   I'm a newer to doris. And I have been using  AnalyticDB for MySQL
on  Alibaba Cloud. I found that the functions of the two are basically the
same. On apache's official website, there are only a few user information
about doris. I want to understand some deeper structures and details. Where
can I find some relevant information?
 Thanks!