Introduction # Imagine you have a resource that can only handle a limited number of requests per second. How do you ensure it doesn’t get overwhelmed? One solution is rate-limiting — controlling how many requests are allowed in a given time frame. In this article, I’ll show how to implement a simple rate limiter using Redis and Golang. Rate-Limiting Algorithms # There are several types of rate-limiting algorithms — two common ones are fixed-window and token bucket.