MJ Alvarez mjalvarez

## Automated RubyGem Install
#!c:/ruby/bin/ruby.exe
require 'rubygems'
require 'rubygems/gem_runner'
require 'rubygems/exceptions'

def install(lib)
  begin
    Gem::GemRunner.new.run ['install', lib]
  rescue Gem::SystemExitException => e
  end

## default.rb
# ey-cloud-recipes/cookbooks/redis-yml/recipes/default.rb

if ['app_master', 'app'].include?(node[:instance_role])
  redis_instance = node['utility_instances'].find { |instance| instance['name'] == 'redis' }

  if redis_instance
    node[:applications].each do |app, data|
      template "/data/#{app}/shared/config/redis.yml"do
        source 'redis.yml.erb'
        owner node[:owner_name]

## fibur.markdown

      
              1 file
            
          
              4 forks
            
          
              36 comments
            
          
              45 stars
            
          
                tenderlove
                / fibur.markdown
            
            
              Created
              December 19, 2011 18:09
            
          
    Fibur

Fibur is a library that allows concurrency during Ruby I/O operations without needing to make use of callback systems.  Traditionally in Ruby, to achieve concurrency during blocking I/O operations, programmers would make use of Fibers and callbacks.  Fibur eliminates the need for wrapping your I/O calls with Fibers and a callback.  It allows you to write your blocking I/O calls the way you normally would, and still have concurrent execution during those I/O calls.
Example

Say you have a method that fetches data from a network resource:


## gist:2779392
# source: http://st-on-it.blogspot.com/2010/01/how-to-move-folders-between-git.html
# First of all you need to have a clean clone of the source repository so we didn't screw the things up.

git clone git://server.com/my-repo1.git

# After that you need to do some preparations on the source repository, nuking all the entries except the folder you need to move. Use the following command

git filter-branch --subdirectory-filter your_dir -- -- all

# This will nuke all the other entries and their history, creating a clean git repository that contains only data and history from the directory you need. If you need to move several folders, you have to collect them in a single directory using the git mv command.

## gist:2999707
<!doctype html>
<title>Site Maintenance</title>
<style>
  body { text-align: center; padding: 150px; }
  h1 { font-size: 50px; }
  body { font: 20px Helvetica, sans-serif; color: #333; }
  article { display: block; text-align: left; width: 650px; margin: 0 auto; }
  a { color: #dc8100; text-decoration: none; }
  a:hover { color: #333; text-decoration: none; }
</style>

## gist:3077989
require 'tempfile'
require 'openssl'
require 'escape' # gem install escape

class CommandFailError < StandardError; end

def p12_to_pem_text(p12, pass='')
  pass = '' if pass.nil?

  # Use shell command for JRuby (see https://github.com/jruby/jruby-ossl/issues/8)

## Devise HAML views
rails g devise:views

gem install html2haml
for file in app/views/devise/**/*.erb; do html2haml -e $file ${file%erb}haml && rm $file; done

gem install haml2slim
for file in app/views/devise/**/*.haml; do haml2slim $file ${file%haml}slim && rm $file; done

## kafka.md

      
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              67 forks
            
          
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                ashrithr
                / kafka.md
            
            
              Last active
              March 14, 2024 21:16
            
              
                kafka introduction
              
          
    Introduction to Kafka

Kafka acts as a kind of write-ahead log (WAL) that records messages to a persistent store (disk) and allows subscribers to read and apply these changes to their own stores in a system appropriate time-frame.
Terminology:

Producers send messages to brokers
Consumers read messages from brokers
Messages are sent to a topic


## rspec_model_testing_template.rb
# This is a skeleton for testing models including examples of validations, callbacks,
# scopes, instance & class methods, associations, and more.
# Pick and choose what you want, as all models don't NEED to be tested at this depth.
#
# I'm always eager to hear new tips & suggestions as I'm still new to testing,
# so if you have any, please share!
#
# @kyletcarlson
#
# This skeleton also assumes you're using the following gems:

## gist:7585810

      
              1 file
            
          
              31 forks
            
          
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                chanks
                / gist:7585810
            
            
              Last active
              February 29, 2024 03:50
            
              
                Turning PostgreSQL into a queue serving 10,000 jobs per second
              
          
    Turning PostgreSQL into a queue serving 10,000 jobs per second

RDBMS-based job queues have been criticized recently for being unable to handle heavy loads. And they deserve it, to some extent, because the queries used to safely lock a job have been pretty hairy. SELECT FOR UPDATE followed by an UPDATE works fine at first, but then you add more workers, and each is trying to SELECT FOR UPDATE the same row (and maybe throwing NOWAIT in there, then catching the errors and retrying), and things slow down.
On top of that, they have to actually update the row to mark it as locked, so the rest of your workers are sitting there waiting while one of them propagates its lock to disk (and the disks of however many servers you're replicating to). QueueClassic got some mileage out of the novel idea of randomly picking a row near the front of the queue to lock, but I can't still seem to get more than an an extra few hundred jobs per second out of it under heavy load.
So, many developers have started going straight t
	#!c:/ruby/bin/ruby.exe
	require 'rubygems'
	require 'rubygems/gem_runner'
	require 'rubygems/exceptions'

	def install(lib)
	begin
	Gem::GemRunner.new.run ['install', lib]
	rescue Gem::SystemExitException => e
	end
	# ey-cloud-recipes/cookbooks/redis-yml/recipes/default.rb

	if ['app_master', 'app'].include?(node[:instance_role])
	redis_instance = node['utility_instances'].find { \|instance\| instance['name'] == 'redis' }

	if redis_instance
	node[:applications].each do \|app, data\|
	template "/data/#{app}/shared/config/redis.yml"do
	source 'redis.yml.erb'
	owner node[:owner_name]
	# source: http://st-on-it.blogspot.com/2010/01/how-to-move-folders-between-git.html
	# First of all you need to have a clean clone of the source repository so we didn't screw the things up.

	git clone git://server.com/my-repo1.git

	# After that you need to do some preparations on the source repository, nuking all the entries except the folder you need to move. Use the following command

	git filter-branch --subdirectory-filter your_dir -- -- all

	# This will nuke all the other entries and their history, creating a clean git repository that contains only data and history from the directory you need. If you need to move several folders, you have to collect them in a single directory using the git mv command.
	<!doctype html>
	<title>Site Maintenance</title>
	<style>
	body { text-align: center; padding: 150px; }
	h1 { font-size: 50px; }
	body { font: 20px Helvetica, sans-serif; color: #333; }
	article { display: block; text-align: left; width: 650px; margin: 0 auto; }
	a { color: #dc8100; text-decoration: none; }
	a:hover { color: #333; text-decoration: none; }
	</style>
	require 'tempfile'
	require 'openssl'
	require 'escape' # gem install escape

	class CommandFailError < StandardError; end

	def p12_to_pem_text(p12, pass='')
	pass = '' if pass.nil?

	# Use shell command for JRuby (see https://github.com/jruby/jruby-ossl/issues/8)
	rails g devise:views

	gem install html2haml
	for file in app/views/devise/*/.erb; do html2haml -e $file ${file%erb}haml && rm $file; done

	gem install haml2slim
	for file in app/views/devise/*/.haml; do haml2slim $file ${file%haml}slim && rm $file; done
	# This is a skeleton for testing models including examples of validations, callbacks,
	# scopes, instance & class methods, associations, and more.
	# Pick and choose what you want, as all models don't NEED to be tested at this depth.
	#
	# I'm always eager to hear new tips & suggestions as I'm still new to testing,
	# so if you have any, please share!
	#
	# @kyletcarlson
	#
	# This skeleton also assumes you're using the following gems: