The count won't be correct when the interval is set close to span

[cc26]

Hi, I have read the source code and found out that it deletes the field in bucket + 1, and bucket + 2. Would this cause any issue when we set the interval to the bucket_span?

ratelimit = Ratelimit.new("messages", bucket_span : 60, bucket_interval : 20 )
5.times do
ratelimit.add(phone_number)
end
ratelimit.count(phone_number, 60)

Using the example in the document for example and set the span to 60 interval to 20, if we set add the phone number in the first 20 second and add the phone number in the next 20 sec and so on, the count will always be 5.

Thanks!

[karellm]

I confirm that count is not accurate is some cases. It caused me quite a little headache and should be documented better imo:

ratelimit = Ratelimit.new('email')
ratelimit.add(email)
ratelimit.count(email, 30)
> 1
ratelimit.count(email, 3600)
> 6 # wtf??

This is easily fixed with the bucket_span:

ratelimit = Ratelimit.new('updates_sent', bucket_span: 3600)
ratelimit.add(email)
ratelimit.count(email, 3600)
> 1