Rate Limiter

A generic rate limiter implementation in Go.

Design

There are a few main concepts:

• Identifier: Provides a way to identify the request (e.g. IPIdentifier, TokenIdentifier)
• Store: Stores the counter (e.g. MemoryStore, FileStore, RedisStore)
• Limiter: Decides if a call is allowed (e.g. FixedWindowLimiter, SlidingWindowLog)

I've used Fixed Window Counter algorithm for this implementation as it's space efficient and easy to implement.

Requirements

• Docker
• Go

Running

In Docker

make run

Locally

make run-local

Testing

In Docker

make test

Locally

make test-local