Tomás Augusto Müller tomasmuller

Refactoring Kata

Here's an interesting refactoring challenge.

Refactor the tangle.c program described at http://axiom-developer.org/axiom-website/litprog.html with the goal of making it more readable and maintainable.

Some suggested guidelines and constraints. Of course, you can do

Preparing Jboss environment

Create Jboss user and group

Create a group for a system user (daemnos and program users like www-data, mysql...)

# addgroup --system jboss

Create a user (system user, without home -> See below the command, to the jboss group and no login shell)

Migrando do Heroku para a Amazon Web Services

Recentemente eu comentei sobre a migração que fizemos no [Myfinance][mf] saindo do [Heroku][h] e indo para a [Amazon Web Services][a] e diversas pessoas me perguntaram as razões pela qual fizemos essa mudança. O objetivo desse post é apenas explicar a decisão que a nossa equipe tomou, como foi e as conseguências dessa migração.

Antes de começar eu gostaria de deixar claro que o objetivo desse texto não é comparar hospedagens e nem dizer que uma é melhor do que a outra. Trata-se apenas do relato de uma experiência.

A motivação

Antes de explicar a motivação por trás da migração é interessante mostrar como era a nossa estrutura.

Berlin Clock

Original Reference

Create a representation of the Berlin Clock for a given time (hh::mm:ss).

The Berlin Uhr (Clock) is a rather strange way to show the time. On the top of the clock there is a yellow lamp that blinks on/off every two seconds. The time is calculated by adding rectangular lamps.

JavaScript

Semicolon

I use it. If you don't, read these:

You can still ignore semicolons, but know that ASI is a syntactic error correction procedure,

	# # your config.ru
	# require 'unicorn_killer'
	# use UnicornKiller::MaxRequests, 1000
	# use UnicornKiller::Oom, 400 * 1024

	module UnicornKiller
	module Kill
	def quit
	sec = (Time.now - @process_start).to_i
	warn "#{self.class} send SIGQUIT (pid: #{Process.pid})\talive: #{sec} sec"

	function cached_completer(completer) {
	var cache = {};
	return function(request, response) {
	if (request.term in cache) {
	response(cache[request.term]);
	} else {
	completer(request, function(resp) {
	cache[request.term] = resp;
	response(resp);
	});

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
	Version 2, December 2004

	Copyright (C) 2011 YOUR_NAME_HERE <YOUR_URL_HERE>

	Everyone is permitted to copy and distribute verbatim or modified
	copies of this license document, and changing it is allowed as long
	as the name is changed.

	DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE

	require 'rubygems'
	require 'bundler'

	Bundler.require
	require './application'

	namespace :assets do
	desc 'compile assets'
	task :compile => [:compile_js, :compile_css] do
	end

	# Put this file on config/initializer

	# This will create an empty whitelist of attributes available for mass assignment for
	# all models in your app. As such, your models will need to explicitly whitelist
	# accessible parameters by using an attr_accessible declaration. This technique is best
	# applied at the start of a new project. However, for an existing project with a thorough
	# set of functional tests, it should be straightforward and relatively quick to insert this
	# initializer, run your tests, and expose each attribute (via attr_accessible) as dictated
	# by your failing tests.