Rate Limiter with redis

can_call.rb

def can_call?(name, seconds, limit)
  calls = redis.llen(name)
  return false if calls > limit
  if redis.exists(name)
    redis.rpushx(name, 1)
  else
    redis.multi do
      redis.rpush(name, 1)
      redis.expire(name, seconds)
    end
  end
  true
end

#in worker
secs = 60*60
name = 'api_name'
limit = 5000 # calls per hour (secs)

if can_call?(name, secs, limit)
 exec_call
else
  re-enqueue