...Rack::Attack lets you easily decide when to allow, block and throttle based on properties of the request. Rack middleware for blocking & throttling abusive requests. Tackling each curious anomaly that threatens your site’s reliability saps developer productivity and happiness. Rack::Attack lets you throttle abusive requests with just a few lines of code. For the security of our users, we have a stricter throttle for login attempts. This makes it very time consuming for attackers to guess users’ passwords. We also use the IPCat ruby library to detect requests from well-known datacenters. ...