mb-dev

require File.expand_path('../boot', __FILE__)

require 'rails/all'

# Assets should be precompiled for production (so we don't need the gems loaded then)
Bundler.require(*Rails.groups(assets: %w(development test)))

module Sample
  class Application < Rails::Application
    # Settings in config/environments/* take precedence over those specified here.

mb-dev

Sample::Application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  # The test environment is used exclusively to run your application's
  # test suite. You never need to work with it otherwise. Remember that
  # your test database is "scratch space" for the test suite and is wiped
  # and recreated between test runs. Don't rely on the data there!
  config.cache_classes = true

  # Do not eager load code on boot. This avoids loading your whole application

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Sample::Application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  # Code is not reloaded between requests.
  config.cache_classes = true

  # Eager load code on boot. This eager loads most of Rails and
  # your application in memory, allowing both thread web servers
  # and those relying on copy on write to perform better.
  # Rake tasks automatically ignore this option for performance.

mb-dev

Sample::Application.configure do
  # Settings specified here will take precedence over those in config/application.rb.

  # In the development environment your application's code is reloaded on
  # every request. This slows down response time but is perfect for development
  # since you don't have to restart the web server when you make code changes.
  config.cache_classes = false

  # Do not eager load code on boot.
  config.eager_load = false

mb-dev

<% custom_cache custom_cache_key('product-tile', @product.id), @product.updated_at, dogpile_protection: true do %>
 <%= @product.name %>
<% end %>

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def custom_read_dogpile(name, timestamp, options)
  result = Rails.cache.read(timestamp_key(name, timestamp))

  if result.blank?
    Rails.cache.write(name + ':refresh-thread', 0, raw: true, unless_exist: true, expires_in: 5.seconds)
    if Rails.cache.increment(name + ':refresh-thread') == 1
      result = nil
    else
      result = Rails.cache.read(name + ':last')
    end

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def custom_write_dogpile(name, timestamp, fragment, options)
  Rails.cache.write(timestamp_key(name, timestamp), fragment)
  Rails.cache.write(name + ':last', fragment)
  Rails.cache.delete(name + ':refresh-thread')
  fragment
end

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if result.blank?
  Rails.cache.write(name + ':refresh-thread', 0, raw: true, unless_exist: true, expires_in: 5.seconds)
  if Rails.cache.increment(name + ':refresh-thread') == 1
    # we are the first visitor
  end
end

mb-dev

# Model to hold the current state
# position: last scrollTop before clicking an item
# state: Can be ITEM_VIEW or PRODUCT_LIST
# productDetailsHTML: The HTML for the detail view
class window.ProductViewState extends Backbone.Model
  @PRODUCT_LIST = 'product_list'
  @ITEM_VIEW = 'item_view'

# View to manage transitions between two states
class window.ProductView extends Backbone.View

mb-dev

<h1><%= @product.name %></h1>
<div>
  <img src="<%= @product.image_url%>"/>
</div>