AppEngine: go runtime limitations

Question

I'm an avid GAE/J user, now trying to create my first GAE/go project.

What are the limitations of the AppEngine Go runtime compared to Java or Python runtimes? Missing APIs? Runtime limitations?

Answer 1

https://developers.google.com/appengine/features/涵盖了哪些功能由哪些运行时实现。

Answer 2

What I was able to find out so far is:

1. DB Query: missing composite filters ( AND and OR ).
2. DB Query: missing "member of" filter operator ( IN ).
3. No App Identity API Edit : this seems to exist , but is not listed under services
4. No Prospective Search