Shows how to make a threaded call

Benchmark.txt

## FYI: Not literally accurate. Because the API is coming from a non-constant setup. (A public API from httpbin)

user     system      total        real
Sequential 10 calls
req:0: 200
req:1: 200
req:2: 200
req:3: 200
req:4: 200
req:5: 200
req:6: 200
req:7: 200
req:8: 200
req:9: 200
  0.050000   0.010000   0.060000 (  3.031101)
Threaded 10 calls with 1 threads
req:0: 200
req:1: 200
req:2: 200
req:3: 200
req:4: 200
req:5: 200
req:6: 200
req:7: 200
req:8: 200
req:9: 200
  0.030000   0.010000   0.040000 (  1.425694)
Threaded 10 calls with 2 threads
req:1: 200
req:0: 200
req:3: 200
req:2: 200
req:4: 200
req:5: 200
req:6: 200
req:7: 200
req:8: 200
req:9: 200
  0.040000   0.020000   0.060000 (  0.619645)
Threaded 10 calls with 3 threads
req:0: 200
req:2: 200
req:1: 200
req:3: 200
req:5: 200
req:4: 200
req:7: 200
req:6: 200
req:8: 200
req:9: 200
  0.030000   0.010000   0.040000 (  0.897210)
Threaded 10 calls with 4 threads
req:0: 200
req:1: 200
req:3: 200
req:2: 200
req:4: 200
req:5: 200
req:7: 200
req:6: 200
req:8: 200
req:9: 200
  0.030000   0.010000   0.040000 (  0.390123)
Threaded 10 calls with 5 threads
req:3: 200
req:4: 200
req:0: 200
req:2: 200
req:5: 200
req:8: 200
req:7: 200
req:6: 200
req:9: 200
req:1: 200
  0.030000   0.010000   0.040000 (  0.580215)
Threaded 10 calls with 6 threads
req:0: 200
req:1: 200
req:2: 200
req:3: 200
req:4: 200
req:5: 200
req:6: 200
req:9: 200
req:7: 200
req:8: 200
  0.030000   0.010000   0.040000 (  0.272985)
Threaded 10 calls with 7 threads
req:3: 200
req:2: 200
req:1: 200
req:5: 200
req:4: 200
req:0: 200
req:6: 200
req:7: 200
req:8: 200
req:9: 200
  0.030000   0.010000   0.040000 (  0.311916)
Threaded 10 calls with 8 threads
req:2: 200
req:5: 200
req:0: 200
req:6: 200
req:7: 200
req:1: 200
req:4: 200
req:3: 200
req:8: 200
req:9: 200
  0.030000   0.010000   0.040000 (  0.245650)
Threaded 10 calls with 9 threads
req:2: 200
req:3: 200
req:1: 200
req:0: 200
req:6: 200
req:8: 200
req:7: 200
req:4: 200
req:5: 200
req:9: 200
  0.030000   0.010000   0.040000 (  0.232136)
Threaded 10 calls with 10 threads
req:1: 200
req:6: 200
req:0: 200
req:9: 200
req:3: 200
req:7: 200
req:5: 200
req:2: 200
req:4: 200
req:8: 200
  0.030000   0.020000   0.050000 (  0.136998)

threaded_http_call.rb

require 'benchmark'
require 'uri'
require 'net/http'

def get(url)
  Net::HTTP.get_response(URI(url))
end

def sequential_call
  10.times do |i|
    puts "req:#{i}: #{get('https://httpbin.org/get').code}"
  end
end

def threaded_call(workers = 1)
  url          = 'https://httpbin.org/get'
  req_queue    = Queue.new
  result_queue = Queue.new
  threads      = []

  10.times { |i| req_queue << ["req:#{i}", url] }
  workers.times { req_queue << :quit }

  threads = Array.new(workers) do
    Thread.new do
      while (req = req_queue.pop) do
        break if req == :quit

        result_queue << [req.first, get(req.last)]
      end
    end
  end

  threads.map(&:join)

  while (res = result_queue.pop(true) rescue nil) do
    puts "#{res.first}: #{res.last.code}"
  end
end

Benchmark.bm do |x|
  x.report("Sequential 10 calls\n") { sequential_call }
  1.upto(10) do |i|
    x.report("Threaded 10 calls with #{i} threads\n") { threaded_call(i) }
  end
end