Article is literally written by someone who admits they don't know about redis within the first paragraph. We used redis for a rate limiter for years and it ne

Article is literally written by someone who admits they don't know about redis within the first paragraph. We used redis for a rate limiter for years and it never caused any issues at all. You just have to understand how redis works a little and make sure your algorithm scales. You really can't get much cheaper than token bucket.