Machine Coding LLD/Machine Coding Implementations References RateLimiter https://hechao.li/2018/06/25/Rate-Limiter-Part1/ https://leetcode.com/discuss/interview-question/object-oriented-design/1583096/API-Rate-limiter-or-LLD-(Common-Atlassian-question)/1153685 URL Router https://leetcode.com/discuss/interview-question/2167390/Atlassian-or-OOD-or-Design-a-middelware-router