Berater

All systems have limits, beyond which they tend to fail. Berater makes working within limits easy and the inevitable failures more graceful.

require 'berater'
require 'redis'

Berater.configure do |c|
  c.redis = Redis.new
end

Berater(:key, 3) do
  # allow only three simultaneous requests with a concurrency limiter
end

Berater(:key, 2, interval: :minute) do
  # or do work twice per minute with a rate limiter
end

See documentation for details.

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Inspired by

https://stripe.com/blog/rate-limiters

https://github.blog/2021-04-05-how-we-scaled-github-api-sharded-replicated-rate-limiter-redis

@ptarjan

https://en.wikipedia.org/wiki/Leaky_bucket