mguterl

Don't be blind when making adjustments for performance. Measure, measure, measure.

Overview

New Relic is a great product for monitoring the peformance of your application. They provide performance management for Ruby, PHP, .Net, Java and Python. Today's presentation is going to focus on Ruby and specifically Rails, however, the basic New Relic overview will be applicable to any of the platforms mentioned. Integrating New Relic into your Rails application is as easy as signing up and adding the gem to your Rails application's Gemfile.

Apdex

When measuring performance in the browser or on the server New Relic provides Apdex scores. Apdex is

mguterl

# Syntax highlighting for pre/code blocks
require 'rack/pygmoku'
use Rack::Pygmoku, :lexer_attr => 'lang'

# Workaround https://github.com/heroku/heroku-buildpack-python/issues/5
RubyPython.configure :python_exe => 'python2.6'

mguterl

require "net/http"

module Sunspot
  class BlockingServer < ::Sunspot::Rails::Server
    def start
      @started = Time.now
      super
      up
    rescue ::Sunspot::Server::AlreadyRunningError
      # do nothing

mguterl

#!/usr/bin/env bash

# This is an RVM Project .rvmrc file, used to automatically load the ruby
# development environment upon cd'ing into the directory

# First we specify our desired <ruby>[@<gemset>], the @gemset name is optional,
# Only full ruby name is supported here, for short names use:
#     echo "rvm use 1.9.3" > .rvmrc
environment_id="ruby-1.9.3-p0@cincirb_katas"

mguterl

Installing rubygems-1.8.15 for system ...
Error running 'GEM_PATH=":@global" GEM_HOME="" "/Users/michaelguterl/.rvm/rubies/system/bin/ruby" "/Users/michaelguterl/.rvm/src/rubygems-1.8.15/setup.rb"', please read /Users/michaelguterl/.rvm/log/system/rubygems.install.log


[2012-01-29 09:07:38] GEM_PATH=":@global" GEM_HOME="" "/Users/michaelguterl/.rvm/rubies/system/bin/ruby" "/Users/michaelguterl/.rvm/src/rubygems-1.8.15/setup.rb"
/Users/michaelguterl/.rvm/scripts/functions/utility: line 163: /Users/michaelguterl/.rvm/rubies/system/bin/ruby: No such file or directory

mguterl

# The ActionMailer interface in Rails >= 3 sucks.  Besides when
# testing the mailer, I see no reason to instantiate an object and
# then deliver it.  Extend your mailer with this module to silence the
# warnings and enjoy life once again.

module SilenceDeliverWarnings
  def method_missing(method, *args)
    if method.to_s =~ /^deliver_(.*)/
      send($1, *args).deliver
    else

mguterl

class BusinessStore < ActiveRecord::Base
  attr_accessible :website, :name, :address,  :phone_number, :online_store
  has_many :products
end

mguterl

• http://destroyallsoftware.com
• http://confreaks.net/videos/641-gogaruco2011-fast-rails-tests
• https://github.com/coreyhaines/ShoppingCart
• http://blog.steveklabnik.com/2011/09/06/the-secret-to-rails-oo-design.html
• http://jakedouglas.wordpress.com/2011/10/16/every-day-use-of-the-decorator-pattern/
• http://jamesgolick.com/2010/3/14/crazy-heretical-and-awesome-the-way-i-write-rails-apps.html
• http://jamesshore.com/Blog/Architectural-Design-Challenge.html
• http://jamesshore.com/Agile-Book/test_driven_development.html
• http://stackoverflow.com/questions/7543782/how-to-mock-and-stub-active-record-before-create-callback-with-factory-girl
• https://github.com/rubypair/rubypair/

mguterl

module Sunspot

  class ResqueSessionProxy < Sunspot::SessionProxy::AbstractSessionProxy

    attr_reader :original_session

    delegate :config, :delete_dirty?, :dirty?,
    :new_search, :search,
    :new_more_like_this, :more_like_this,
    :remove, :remove!,

mguterl

pangaea ~/code/rm/events[master]$ bundle update oa-recruitmilitary
Updating git@github.com:recruitmilitary/oa-recruitmilitary.git
Fetching source index for http://rubygems.org/
Bundler could not find compatible versions for gem "nokogiri":
  In Gemfile:
    oa-recruitmilitary depends on
      nokogiri (~> 1.4.2)

    cucumber-rails depends on
      nokogiri (1.5.0)