I purchased gorkking system design interview and studied gokking coding interview pattern. I also did the amazon question collection. But I think I was leetcode overloaded and trying to remember the patterns and in the end it screwed up my brain. Although the coding pattern course was good, I felt like I didn't really have enough time to digest it. It would have been better to just do the leetcode collection. Since I've been read people's post and feel like I should give back to the community.

Phone: two sum
onsite:
design distributed database system
task scheduling with cool down
largest average book rating in stream

I found a list of Amazon leadership principle questions from a youtube video. I felt like it's a good collection and I was asked a few questions in that list.