hakanensari

require 'jeff'

module MWS
  class Request
    include Jeff

    HOSTS = {
      'A2EUQ1WTGCTBG2' => 'mws.amazonservices.ca',
      'AAHKV2X7AFYLW'  => 'mws.amazonservices.com.cn',
      'A1PA6795UKMFR9' => 'mws-eu.amazonservices.com',

hakanensari

require 'benchmark'
require './lib/excon'

include Excon

uris = {
  'Good URI' => "http://example.org/#{'foo/' * 10}?#{10.times.map { 'bar=baz' }.join('&')}",
  'Bad URI'  => "http://example.org/#{'foo /' * 10}?#{10.times.map { 'bar=baz' }.join('&')}"
}

hakanensari

1. Get You a Hug, Every Friday

FridayHug.com http://fridayhug.com

2. Run From a Single File

The Smallest Rails App http://thesmallestrailsapp.com

%w(action_controller/railtie coderay).each &method(:require)

hakanensari

#!/usr/bin/env bash
curl https://s3.amazonaws.com/heroku-jvm-buildpack-vi/vim-7.3.tar.gz --output vim.tar.gz
mkdir vim && tar xzvf vim.tar.gz -C vim
export PATH=$PATH:/app/vim/bin

hakanensari

  #!/usr/bin/ruby -w
  require 'digest/md5'
  filename = 'MD5.rdoc'

  all_digest = Digest::MD5.hexdigest(File.read(filename))

  incr_digest = Digest::MD5.new()
  file = File.open(filename, 'r')
  file.each_line do |line|
    incr_digest << line

hakanensari

# config/initializers/sidekiq.rb
if Sidekiq.server?
  config = ActiveRecord::Base.connection.pool.spec.config
  ActiveRecord::Base.establish_connection(config.merge(pool: Sidekiq.options.fetch(:concurrency)))
end

hakanensari

/* How to calculate postgreSQL database size in disk ? */

SELECT pg_size_pretty(pg_database_size('thedbname'));

/* Calculate size of a table including or excluding the index */

SELECT pg_size_pretty(pg_total_relation_size('big_table'));
SELECT pg_size_pretty(pg_relation_size('big_table')); /* without index */

/* See indexes on a table with `\d tablename` */

hakanensari

1. Make sure you allow root to ssh in: Edit your /etc/ssh/sshd_config, add your public key to root's authorised keys, and so on.
2. Move home, e.g. mv /home /home.bak.
3. Comment out the line that mounts home in /etc/fstab.
4. Reboot.
5. Rename home.bak back to home.
6. Stop PostgreSQL.
7. mv /var/lib/postgresql /var/lib/postgresql.bak.
8. Edit /etc/fstab, remove comment and replace /home with /var/lib/postgresql.
9. Create /var/lib/postgresql with chown it to postgres:postgres.
10. Mount it.

hakanensari

Sequel.migration do
  up do
    run 'CREATE EXTENSION "uuid-ossp"'

    create_table :products do
      column :id, :uuid, :default => Sequel.function(:uuid_generate_v4), :primary_key => true
    end
  end
end

hakanensari

#!/bin/sh
filename=$1
echo "Begin processing file:" $filename

dimensions=$(identify -format '%w %h' $filename)

IFS=' ' read -a array <<< "$dimensions"
width=${array[0]}
height=${array[1]}