[Beginner Question]What should I do if I want to achieve lsm-tree index in postgresql?

Hi community,

I am a student and I want to achieve lsm-tree index in postgresql, for my database experiment,

I have already read the document of postgresql, and some postgresql's moudle source, but I really don't know where to start this work.

Make a new extension like 'https://github.com/HypoPG/hypopg'? Or directly change the kernel?

Can someone give me some advice?

Thanks in advance!

Yours,

Wen Yi