Async VS sync HTTP requests (using faraday and async.rb)

async_http.rb

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'

  gem 'faraday'
  gem 'async-http-faraday'
  gem 'pry'
end

require 'benchmark'
require 'async/http/faraday'

# Make it the global default:
Faraday.default_adapter = :async_http

# Per connection:
conn = Faraday.new(url: 'https://dog.ceo/') do |faraday|
  faraday.adapter :async_http
end

result = []

bench_result = Benchmark.measure do
  Async do
    response = conn.get("/api/breeds/list/all")

    if response.status == 200
      breeds = JSON.parse(response.body)['message'].keys[0..9]

      breeds.each do |breed|
        Async do
          breed_path = "/api/breed/#{breed}/images"
          response = conn.get(breed_path)
          p breed_path

          result << JSON.parse(response.body)
        end
      end
    end
  end
end

puts bench_result

# result.flat_map { |i| i['message'] }.size

binding.pry

sync.rb

require 'bundler/inline'

gemfile do
  source 'https://rubygems.org'

  gem 'faraday'
  gem 'pry'
end

require 'benchmark'
require 'json'

# Make it the global default:
# Per connection:
conn = Faraday.new(url: 'https://dog.ceo/')

result = []

bench_result = Benchmark.measure do
  response = conn.get("/api/breeds/list/all")

  if response.status == 200
    breeds = JSON.parse(response.body)['message'].keys[0..9]

    breeds.each do |breed|
      breed_path = "/api/breed/#{breed}/images"
      response = conn.get(breed_path)
      p breed_path

      result << JSON.parse(response.body)
    end
  end
end

puts bench_result

# result.flat_map { |i| i['message'] }.size

binding.pry