main.rb

require 'rubygems'
require 'lol'
require 'redis'

include Lol

client = Client.new "foo", {region: ENV['API_REGION']}
redis = Redis.new :url => ENV['REDIS_URL']

def fetch client, redis, slice
  return -1 if redis.llen("players") >= 50000
  c = client.summoner.get slice
  results = c.select {|x| x.summoner_level == 30}.map {|y| h = "#{y.id},#{y.name}"; puts h; h}
  redis.rpush("players", results) if results != []
end

threads = ThreadGroup.new


(ENV['START'].to_i .. ENV['END'].to_i).each_slice(40) do |p_ids|
  sleep 1 while threads.list.size >= 100
  thread = Thread.new { fetch client, redis, p_ids}
  threads.add thread
  thread.join
end