Well I failed a amazon OA because of a rate limiting question, So I have built this rate limiter from first principles and haven't followed any tutorial. Through this blog, I want to answer questions like: Why even use Redis to make a rate limiter? Why not just use a Node.
Source: [Dev.to](https://dev.to/tejaswahinduja/building-a-rate-limiter-why-even-use-redis-20b4)