Amazon Senior Developer Engineer interview questions

2 interview experiences: exp #1: phone interviewed w/ 2 people, onsite visit, job offered. Phone interview was mainly algo questions (no puzzles) and 1 offline coding. onsite was 3 algo interviers and 2-3 design discussion interviewers. I was interviewed for 2 positions so was told that I'll face extra people, I can't remember if I was double teamed at some parts. Questions: I don't remember the algo questions, but I think they weren't too hard because I was able to solve them (I can't solve hard ones at interviews). 1. discuss how to design server(s) to handle large amounts of traffic across the world (large geographic/network space). 2. How do I feel about Java vs C++ (I remember this especially because during lunch a manager mentioned he felt c++ is "crisp" and I liked that description.) It took Amazon a while to reimburse my travel expenses (I think 2-3 weeks, while other companies gave a check within 1 week). Because they want to you take taxi, I was waiting in their building exit for my cab ride to the airport when everybody is leaving work. A few people came and said bye to me, but I can't remember their names (actually I didn't even remember talking to them). So, not wanting to offend any interviewer, I just smiled at everybody existing.