Create Api Rate Limiting With Token Bucket 🪣
Blog post from Keploy
The Token Bucket algorithm is a method used for API rate limiting to manage server resources by controlling the number of requests a client can make within a certain timeframe. Implemented in Node.js, it uses a finite number of tokens that are consumed whenever a request is made; if the tokens are depleted, additional requests are denied until the tokens are refilled. Tokens can be replenished either after a request is fulfilled or at set intervals, typically every 20 seconds in the described implementation. The process involves setting up a basic Express server and creating middleware to handle the rate limiting, ensuring no more than five requests are allowed per 20 seconds. Adjustments to the code include checking the time elapsed since the last refill to maintain the desired request rate, which helps prevent server overload and ensures fair usage of resources.
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