nateberkopec

Most Ruby programmers don't have any idea how garbage collection works in their runtime - what triggers it, how often it runs, and what is garbage collected and what isn't. That's not entirely a bad thing - garbage collection in dynamic languages like Ruby is usually pretty complex, and Ruby programmers are better off just focusing on writing code that matters for their users.

But, occasionally, you get bitten by GC - either it's running too often or not enough, or your process is using tons of memory but you don't know why. Or maybe you're just curious about how GC works!

One way we can learn a bit about garbage collection in CRuby (that is, the standard Ruby runtime, written in C) is to look at the built-in GC module. If you haven't read the docs of this module, check it out. There's a lot of interesting methods in there. But for right now, we're just going to look at one: GC.stat.

GC.stat outputs a hash with a bunch of different numbers, but none of th

nateberkopec

In thread: #<Process::Status: pid 56845 exit 1>
Global value: #<Process::Status: pid 56844 exit 0>

nateberkopec

require 'benchmark/ips'
require 'securerandom'

BIG_STRING = <<-EOS
{:event_id=>"c18ae35e83234021bb78d8ba8a8ef2da", :timestamp=>"2016-11-16T23:27:52", :time_spent=>nil, :level=>40, :platform=>"ruby", :sdk=>{"name"=>"sentry-raven", "version"=>"2.1.3"}, :contexts=>{:server_os=>{"name"=>"Darwin", "version"=>"Darwin Kernel Version 16.1.0: Thu Oct 13 21:26:57 PDT 2016; root:xnu-3789.21.3~60/RELEASE_X86_64", "build"=>"16.1.0", "kernel_version"=>"Darwin nodachi.local 16.1.0 Darwin Kernel Version 16.1.0: Thu Oct 13 21:26:57 PDT 2016; root:xnu-3789.21.3~60/RELEASE_X86_64 x86_64"}, :runtime=>{"name"=>"ruby", "version"=>"ruby 2.3.2p217 (2016-11-15 revision 56796) [x86_64-darwin16]"}}, :logger=>"", :culprit=>"benchmarks/benchmark.rb in / at line 10", :server_name=>"nodachi.local", :release=>"425c535", :environment=>"default", :modules=>{"rake"=>"11.3.0", "concurrent-ruby"=>"1.0.2", "i18n"=>"0.7.0", "minitest"=>"5.9.1", "thread_safe"=>"0.3.5", "tzinfo"=>"1.2.2", "activesupport"=>"5.0.0.1", "builder"=>"3.2.2", "erubis"=>"2

nateberkopec

This is the "everything" list. You'll be able to filter it via criteria (backpack only, cold weather, dress as male/female).
Please do suggest any additional items or recommend items for certain categories (your favorite carryon, for example).

BAGS
carryon bag
  http://thewirecutter.com/reviews/travel-guide/#rolling
  https://www.awaytravel.com/
backpack
  http://thewirecutter.com/reviews/our-favorite-laptop-backpacks/
  http://www.tropicalmba.com/best-digital-nomad-backpack/

nateberkopec

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nateberkopec

class SomeController < ApplicationController
  before_action :add_http_preload
  
  private
  
  def add_http_preload
    # Always add a Link header to responses to this controller
    http_preload script: "application.js", style: "application.css"
    http_preload "myfont.woff", as: :font, push: false
    # TODO: How should crossorigin work?

nateberkopec

begin
  require 'bundler/inline'
rescue LoadError => e
  $stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
  raise e
end

gemfile(true) do
  source 'https://rubygems.org'
  gem 'rails', github: 'rails/rails'

nateberkopec

require 'json'
require 'open-uri'
require 'active_model'
require 'active_support'
require 'active_support/core_ext'

class Market 
  include ActiveModel::Model
  ATTRIBUTES = [:id, :schedule, :address, :google_link]
  

nateberkopec

begin
  require "awesome_print"
  AwesomePrint.irb!
rescue LoadError => e
  puts e
end

nateberkopec

begin
  require 'bundler/inline'
rescue LoadError => e
  $stderr.puts 'Bundler version 1.10 or later is required. Please update your Bundler'
  raise e
end

gemfile(true) do
  source 'https://rubygems.org'
  gem 'rails', github: 'rails/rails'