semaperepelitsa

# http://www.reddit.com/r/ruby/comments/wgtqj/how_i_spend_my_time_building_rails_apps/c5daer4

export RUBY_HEAP_MIN_SLOTS=800000
export RUBY_HEAP_FREE_MIN=100000
export RUBY_HEAP_SLOTS_INCREMENT=300000
export RUBY_HEAP_SLOTS_GROWTH_FACTOR=1
export RUBY_GC_MALLOC_LIMIT=79000000

time rails runner "p"
time rake -T

semaperepelitsa

Processor Information:
    Model:  MacBookAir4,2
    Vendor:  GenuineIntel
    Speed: 1800 Mhz
    4 logical processors
    2 physical processors
    HyperThreading:  Supported
    FCMOV:  Supported
    SSE2:  Supported
    SSE3:  Supported

semaperepelitsa

gem "dragonfly", "~> 0.9.14"
require "dragonfly"

img = Dragonfly[:images]

img.datastore = Dragonfly::DataStorage::S3DataStore.new(
  access_key_id: ENV['AWS_ACCESS_KEY_ID'],
  secret_access_key: ENV['AWS_SECRET_ACCESS_KEY'],
  bucket_name: ENV['S3_BUCKET_NAME']
)

semaperepelitsa

# encoding: UTF-8
ENV["RAILS_ENV"] = "test"

require File.expand_path("../dummy/config/environment.rb",  __FILE__)
require "rails/test_help"
Rails.backtrace_cleaner.remove_silencers!

class HelloControllerTest < ActionController::TestCase
  def test_links
    @request.host = "example.com"

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options system: false, cleanup: false

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require "thread"

mutex = Mutex.new

i = 0
while true
  i += 1
  Thread.new(i) do |n|
    mutex.synchronize do
      puts "#{n}. started request"

semaperepelitsa

gem "nokogiri", "~> 1.6.0"
require "nokogiri"

Nokogiri::XML::Searchable.module_eval do
  def value_of(*args)
    a = search(*args).first
    a && a.content
  end
  alias :content_of :value_of
end

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; Compare vector vs list:
cljs.user=> (simple-benchmark [nums (into (vector) (range 9999))] (nth nums 5000) 1000)
[nums (into (vector) (range 9999))], (nth nums 5000), 1000 runs, 2 msecs
nil

cljs.user=> (simple-benchmark [nums (into (list) (range 9999))] (nth nums 5000) 1000)
[nums (into (list) (range 9999))], (nth nums 5000), 1000 runs, 240 msecs
nil

; It looks similar to let: 

semaperepelitsa

create extension if not exists hstore;

create table if not exists test_array  as
  select id, '{"A","B","C"}'::varchar[] || id::varchar as codes from generate_series(1, 100000) id;
create table if not exists test_hstore as
  select id, '"A"=>t,"B"=>t,"C"=>t'::hstore || hstore(id::varchar, 't') as codes from generate_series(1, 100000) id;
create table if not exists test_jsonb  as
  select id, '{"A":true,"B":true,"C":true}'::jsonb || jsonb_build_object(id::varchar, true) as codes from generate_series(1, 100000) id;

\timing on

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select n, delay, sum(delay) over (order by n) total_delay from (
  select n, make_interval(secs => (pow(n, 4) + 2)::int) delay from generate_series(1, 20) n
) _;