Use multithreading

[timbru31]

Examine how to check multiple mp3 files at the same time.

[timbru31]

Example could be something like this:

POOL_SIZE = 10

jobs = Queue.new

10_0000.times{|i| jobs.push i}

workers = (POOL_SIZE).times.map do
  Thread.new do
    begin      
      while x = jobs.pop(true)
        Mailer.deliver do 
          from    "eki_#{x}@eqbalq.com"
          to      "jill_#{x}@example.com"
          subject "Threading and Forking (#{x})"
          body    "Some content"
        end        
      end
    rescue ThreadError
    end
  end
end

workers.map(&:join)

(https://www.toptal.com/ruby/ruby-concurrency-and-parallelism-a-practical-primer)