vjt

#
#   mmm  m     m  mmm    mmm    mmm   mmmmm   mmm  
#  "   # "m m m" #"  #  #   "  #" "#  # # #  #"  # 
#  m"""#  #m#m#  #""""   """m  #   #  # # #  #"""" 
#  "mm"#   # #   "#mm"  "mmm"  "#m#"  # # #  "#mm" 
# 
# nginx configuration For Ruby/Rack web applications
#
# Cooked up with style, care and a bit of *secret*
# nerdy spice. :-)

knzconnor

# RSpec's subject method, both implicitly and explicitly set, is useful for
# declaratively setting up the context of the object under test. If you provide a
# class for your describe block, subject will implicitly be set to a new instance
# of this class (with no arguments passed to the constructor). If you want
# something more complex done, such as setting arguments, you can use the
# explicit subject setter, which takes a block.
describe Person do
  context "born 19 years ago" do
    subject { Person.new(:birthdate => 19.years.ago }
    it { should be_eligible_to_vote }

jnx

# Update, upgrade and install development tools:
apt-get update
apt-get -y upgrade
apt-get -y install build-essential
apt-get -y install git-core

# Install rbenv
git clone git://github.com/sstephenson/rbenv.git /usr/local/rbenv

# Add rbenv to the path:

tonyc

Using strace and lsof to debug blocked processes

You can use strace on a specific pid to figure out what a specific process is doing, e.g.:

strace -fp <pid>

You might see something like:

select(9, [3 5 8], [], [], {0, 999999}) = 0 (Timeout)

jeremy2

#
# This file should be in .../cookbooks/database/templates/default/database.yml.erb
#

<%= @environment %>:
  adapter:   <%= @adapter %>
  database:  <%= @database %>
  username:  <%= @username %>
  password:  <%= @password %>
  host:      <%= @host %>

parhamr

Magento Enterprise 1.12 cluster

Scaling Magento presentation with 60 slides and notes, which was then reviewed by Alan Storm.

Table of Contents

• Summary
• Traffic Statistics
  • August 2013
• November 2013

kyleterry

#!/bin/bash

touch -r backup.sql backup.sql.marker
while :;
do
    if [[ -n $(find . -name *.sql -newer backup.sql.marker) ]];
    then
        echo "Backup finished at $(date)" | mailx -s 'New Backup' kyle@kyleterry.com
        break
    fi

kyleterry

#!/bin/bash

# In order for this parser to work, the file needs to be structured with
# tickets like the following:
#
# 12345678 - Some ticket title
#     Action: UAT Needed.
#     State: (APPROVED|PENDING|FAILED)
#     Pivotal: https://www.pivotaltracker.com/s/projects/745189/stories/12345678
#     Github: https://github.com/copious/Zumiez.com/pull/123

parhamr

Removing quotes from an INT column allows MySQL to use the index and this can reduce rows scanned by 99.997 percent. Example from Magento 1.12 on a production database; the query takes nearly a second to execute:

mysql> explain DELETE FROM `catalog_product_index_price` WHERE entity_id IN('433284', 433283)\G;
*************************** 1. row ***************************
           id: 1
  select_type: SIMPLE
        table: catalog_product_index_price
         type: ALL
possible_keys: NULL

peterjaap

<?php

protected function _getProducts($productIds, $storeId, $entityId, &$lastEntityId)
    {
        $products   = array();
        $websiteId  = Mage::app()->getStore($storeId)->getWebsiteId();
        $adapter    = $this->_getReadAdapter();
        if ($productIds !== null) {
            if (!is_array($productIds)) {
                $productIds = array($productIds);