jhubert

begin
  require 'bundler/inline'
  require 'pry'
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'

jhubert

// Append UTM values to any form on the page
(function () {
  function getUTMCookies() {
    var cookies = {}, pairs = document.cookie.split(";"), i, pair, key;

    for (i = 0; i < pairs.length; i++) {
      pair = pairs[i].split("=");
      key = (pair[0] + '').trim();
      if (key.indexOf('utm') > -1) {
        cookies[key] = unescape(pair[1]);

jhubert

There is a small period of time when migrations aren't recognized by rails during the deploy process and this causes errors.

- old code is running
- new code hits heroku
- heroku restart -> loads up the new code. takes 3ish minutes
- migration happens
- heroku restart -> loads up the new code again. takes 3ish minutes

With Preboot:
[old code ----------------------------------------------------]

jhubert

require 'csv'
require 'csv-i18n'
require 'i18n'

I18n.backend.store_translations(:en, csv: { exception: { unclosed_quoted_field: "custom error on line %{line_number}" } })

CSV.parse('"')
# lib/ruby/2.3.0/csv.rb:1898:in `block in shift': custom error on line 1 (CSV::MalformedCSVError)
#   from lib/ruby/2.3.0/csv.rb:1805:in `loop'
#   from lib/ruby/2.3.0/csv.rb:1805:in `shift'

jhubert

# Disable users who have had no activity in the last 14 days
class DisableInactiveUsersJob
  include Sidekiq::Worker

  def perform
    users_with_no_activity_since(14.days.ago).pluck(:id).each do |user_id|
      DisableUser.call(user_id)
    end
  end

jhubert

# Disable users who have email addresses that are bouncing
class DisableRejectedEmailsJob
  include Sidekiq::Worker

  def perform
    now = Time.zone.now

    target_users = User.enabled.where(email: rejected_emails)
    # Load the ids before we update the users or the pluck query will return nothing
    target_user_ids = target_users.pluck(:id)

jhubert

# Disable users who have had no activity in the last 14 days
class DisableInactiveUsersJob
  include Sidekiq::Worker

  def perform
    now = Time.zone.now

    target_users = users_with_no_activity_since(now - 14.days)
    # Load the ids before we update the users or the pluck query will return nothing
    target_user_ids = target_users.pluck(:id)

jhubert

require 'csv'

module CoreExtensions
  module CSV
    module I18n
      # Redefine the shift method to catch the exception and attempt to return
      # a translated version of the error message using I18n.t
      def shift
        super
      rescue ::CSV::MalformedCSVError => exception

jhubert

Keybase proof

I hereby claim:

• I am jhubert on github.
• I am jhubert (https://keybase.io/jhubert) on keybase.
• I have a public key whose fingerprint is CE02 7B8C 1EB8 1445 6A5D 3B93 55C9 EAAF 0186 36B4

To claim this, I am signing this object:

jhubert

I did some performance testing from heroku to memcachier and redis-cloud to check the iterations per second. Here is how I did it, based on the work that @nateberkopec did:

From heroku run bash -r production run the following:

gem install benchmark-ips --no-doc --no-ri
gem install redis-activesupport --no-doc --no-ri
# the other gems are already installed because they're included in our app's gemfile, but you may need:
# gem install dalli --no-doc --no-ri
# gem install rails --no-doc --no-ri