khalilgharbaoui

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How it works?

1. Cache product pages

Following line does't have /products.* page. This tells Nginx to cache all product pages by default.

Idea is fast loading product pages will improve scalability of a store and also conversion.

khalilgharbaoui

types {
    text/html                             html htm shtml;
    text/css                              css;
    text/xml                              xml;
    image/gif                             gif;
    image/jpeg                            jpeg jpg;
    application/x-javascript              js;
    application/atom+xml                  atom;
    application/rss+xml                   rss;

khalilgharbaoui

# Original source: https://gist.github.com/hopsoft/56ba6f55fe48ad7f8b90
# Merged with: https://gist.github.com/kofronpi/37130f5ed670465b1fe2d170f754f8c6
# Benefits of: https://gist.github.com/e12e/e0c7d2cc1d30d18c8050b309a43450ac
# And fixes of: https://gist.github.com/joelvh/f50b8462611573cf9015e17d491a8a92
namespace :db do
  desc 'Dumps the database to backups'
  task dump: :environment do
    dump_fmt   = ensure_format(ENV['format'])
    dump_sfx   = suffix_for_format(dump_fmt)
    backup_dir = backup_directory(Rails.env, create: true)

khalilgharbaoui

class ParamsSlicer
  def initialize(params, *whitelist)
    @params = params
    @nested_whitelist = whitelist.extract_options!
    @whitelist = whitelist
  end

  def call
    params.slice(*whitelist).tap do |result|
      nested_whitelist.each do |k, v|

khalilgharbaoui

namespace :database do

  task fat_tables: :environment do
    c = ActiveRecord::Base.connection

    max_table_name_width = 0

    tables = c.tables.sort_by do |t|
      max_table_name_width = t.length if t.length > max_table_name_width

khalilgharbaoui

One liner for deleting images from a v2 docker registry

Just plug in your own values for registry and repo/image name.

registry='localhost:5000'
name='my-image'
curl -v -sSL -X DELETE "http://${registry}/v2/${name}/manifests/$(
    curl -sSL -I \
        -H "Accept: application/vnd.docker.distribution.manifest.v2+json" \

khalilgharbaoui

/(#(?:[0-9a-fA-F]{2}){2,4}$|(#[0-9a-fA-F]{3}$)|(rgb|hsl)a?\((-?\d+%?[,\s]+){2,3}\s*[\d\.]+%?\)$|black$|silver$|gray$|whitesmoke$|maroon$|red$|purple$|fuchsia$|green$|lime$|olivedrab$|yellow$|navy$|blue$|teal$|aquamarine$|orange$|aliceblue$|antiquewhite$|aqua$|azure$|beige$|bisque$|blanchedalmond$|blueviolet$|brown$|burlywood$|cadetblue$|chartreuse$|chocolate$|coral$|cornflowerblue$|cornsilk$|crimson$|darkblue$|darkcyan$|darkgoldenrod$|darkgray$|darkgreen$|darkgrey$|darkkhaki$|darkmagenta$|darkolivegreen$|darkorange$|darkorchid$|darkred$|darksalmon$|darkseagreen$|darkslateblue$|darkslategray$|darkslategrey$|darkturquoise$|darkviolet$|deeppink$|deepskyblue$|dimgray$|dimgrey$|dodgerblue$|firebrick$|floralwhite$|forestgreen$|gainsboro$|ghostwhite$|goldenrod$|gold$|greenyellow$|grey$|honeydew$|hotpink$|indianred$|indigo$|ivory$|khaki$|lavenderblush$|lavender$|lawngreen$|lemonchiffon$|lightblue$|lightcoral$|lightcyan$|lightgoldenrodyellow$|lightgray$|lightgreen$|lightgrey$|lightpink$|lightsalmon$|lightseagreen$|lig

khalilgharbaoui

TL;DR

Install Postgres 9.6, and then:

sudo pg_dropcluster 9.6 main --stop
sudo pg_upgradecluster 9.5 main
sudo pg_dropcluster 9.5 main

khalilgharbaoui

require 'rubygems'
require 'rspec'
require 'webmock'
require 'vcr'
require 'pry'

# in a Rails app, this would be in an initializer
WebMock.disable_net_connect!(
  allow_localhost: true,
  net_http_connect_on_start: true

khalilgharbaoui

  # Use: it { should accept_nested_attributes_for(:association_name).and_accept({valid_values => true}).but_reject({ :reject_if_nil => nil })}
  RSpec::Matchers.define :accept_nested_attributes_for do |association|
    match do |model|
      @model = model
      @nested_att_present = model.respond_to?("#{association}_attributes=".to_sym)
      if @nested_att_present && @reject
        model.send("#{association}_attributes=".to_sym,[@reject])
        @reject_success = model.send("#{association}").empty?
      end
      model.send("#{association}").clear