Rate Limiter App

This is a demo application that implements a rate limiter.

A live demo of this app can be seen at https://rate-limiter-app-demo.herokuapp.com

Getting started

This application as two system dependencies.

• Ruby 2.5.1
• Redis

You will need this installed before you can begin.

To get started:

Clone the repository:

git clone https://github.com/lsylvester/rate_limiter_app.git
cd rate_limiter_app

And run the setup script

./bin/setup

Then start up the server

./bin/rails server

And visit

http://localhost:3000/

You will see OK for the first 100 times within the hour, but after that your responses will be rate limited.

Configuring Redis

Redis is configured per environement via the ./config/redis.yml file.

There are two specials keys in this file:

• :pool - the values under this key are used to configure the ConnectionPool for redis. See https://github.com/mperham/connection_pool#usage for details on valid options.
• :namespace - this configures the namespace to be used by the redis connection. See https://github.com/resque/redis-namespace#redis-namespace for details.

All other options are passed directly into the redis instance. If these are not set, redis can be configured via the environment varaiable REDIS_URL or the default options will be used.