Action based rate limiting

[rmarronnier]

To protect a web app against abusive connections / requests (sub DDOS scale) several layers can help (nginx, middleware), but stumbling on Rails future rate limiting , I'm quite jealous of the elegant DX of this solution.

I could clearly see this working in Lucky :

class SignIns::New < BrowserAction
  include Auth::RedirectSignedInUsers
  rate_limit to: 50, within: 10.seconds

  get "/sign_in" do
    html NewPage, operation: SignInUser.new
  end
end

I can't implement this right now, I'm just putting it out there as a starting point for discussion / inspiration.

[jwoertink]

Yeah, I dig it. I think rails has an easy way to handle it with having their key/value store built-in now. I wonder how this would scale with postgres backed. Or would this feature require redis to be added in?

[rmarronnier]

The best solution would be to rely on https://github.com/luckyframework/lucky_cache and let the user configure their preferred backend (redis, db, etc). That's what Rails ended up doing : https://github.com/rails/rails/pull/50781

It would require implementing new store(s) for lucky_cache (redis for example). Caching for Avram might also benefit from it.

With a redis store added to lucky_cache, a dependency on a redis shard would be added (not an issue for redis-less users if the redis store is not used).

Again, I can't do the work right now, just putting down ideas :-)