troelskn

require 'raven'
require 'rake/task'

if Rails.env.production?
  Raven.configure do |config|
    config.dsn = 'http://xxx:xxx@app.getsentry.com/xxxxx'
  end

  module Rake
    class Task

troelskn

require 'thinking_sphinx/middlewares'

module ThinkingSphinx
  module Middlewares
    class IdentityCacheMiddleware < ActiveRecordTranslator

      def call(contexts)
        contexts.each do |context|
          Inner.new(context).call
        end

troelskn

I benchmarked identity_cache with memcached vs. default active_record against mysql.

Setup is running on AWS, same availability zone. I used RDS (Multi AZ setup) for MySql and ElastiCache for memcached. The test server is on EC2. Instance types are m3.large for MySql, m3.xlarge for EC2 and r3.large for memcached.

The database is a copy of our production db. The products table holds about 1.4M entries.

The cache has been pre-heated with all 1.4M entries prior to the test.

During the test, I ran 10000 fetches:

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var listId = $(this).parents().filter(function() { return $(this).data("list-id"); }).eq(0).data("list-id");

troelskn

# Install dependencies manually
apt-get install odbcinst1debian2 libodbc1 unixodbc libpq5
# Fetch deb package
mkdir -p /usr/local/build ; cd /usr/local/build && [-f sphinxsearch_2.1.4-release-0ubuntu11~precise_amd64.deb ] || wget http://sphinxsearch.com/files/sphinxsearch_2.1.4-release-0ubuntu11~precise_amd64.deb
# Install package
dpkg --install /usr/local/build/sphinxsearch_2.1.4-release-0ubuntu11~precise_amd64.deb

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class ApplicationController < ActionController::Base
  layout :conditionally_select_layout

  # Like  `layout`, but allows conditional overriding in app controller
  def self.preferred_layout(value = nil)
    @preferred_layout = value unless value.nil?
    @preferred_layout
  end

  private

troelskn

# Requires ImageMagick


# Converting the source from JPEG to PNG - if necessary
convert my_src_image.jpg my_src_image.png


# Option A
#  - Requires a temporary intermediate file
#  - Drill more than 10 might result in poor results

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# dashing.js is located in the dashing framework
# It includes jquery & batman for you.
#= require dashing.js

#= require_directory .
#= require_tree ../../widgets

console.log("Yeah! The dashboard has started!")

Dashing.on 'ready', ->

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<!-- app/views/devise/omniauth/link_user.html.erb -->

  <h2>Link your account</h2>
  <%= form_for(@user, :url => user_omniauth_link_url, :html => { :method => :put }) do |f| %>

    <p>You already have an account, that was created with email and password. To link your Facebook account, please enter your password. If you can't remember your password, you can recover it by clicking the link below.</p>

    <%= render "devise/shared/error_messages" %>

    <div>

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# C implementation of Levenshtein text distance algorithm, uses RubyInline to call from within Ruby
# Wildly faster than the Text gem's Text::Levenshtein
# Example:

# l = Levenshtein.new
# l.distance 'hello', ' hello'
# => 1

# Taken from http://www.benallfree.com/2008/10/05/finding-duplicate-text-with-ruby/