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All systems have limits, beyond which they tend to fail. Berater makes working within these limits easy.

require 'berater'
require 'redis'

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

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

Berater(:key, 2, interval: 60) do
  # or do work twice per minute with a rate limiter
end

Usage

Berater(key, capacity, **opts, &block)

• key - name of limiter
• capacity - maximum number of requests permitted
• opts
  • interval - how often the capacity limit resets, if it does (either number of seconds or a symbol: :second, :minute, hour)
  • redis - a redis instance
• block - optional block to execute if within limits