.NET Architects Day - DNAD 2011

Discutindo Rails
e Arquiteturas

a apresentação já vai começar ...

Discutindo Rails
e Arquiteturas

Fabio Akita
www.akitaonrails.com
@akitaonrails

Fabio Akita
@akitaonrails

1990

Anos 80 Fim Anos 90 Século XXI

Anos 80 Fim Anos 90 Século XXI

Perl
Basic Pascal Java
C PHP

dBase Delphi Python ABAP
III
Ruby
Clipper
ASP .NET
ObjC
VB6

Como o cliente Como o Líder de Como o Analista Como o Programador Como o Consultor de
explicou Projeto entendeu desenhou escreveu Negócios descreveu

Como o projeto foi Como Operações Como o cliente foi O que o cliente
Como foi o suporte
documentado instalou cobrado realmente queria

STANDARD

Pattern PADRÃO

Default

cada padrão (“pattern”)
representa nosso melhor chute agora ...
os padrões ainda são hipóteses, ... e
portanto todos são tentativas, todos
livres para evoluir sob o impacto de
novas experiências e observações."

Christopher Alexander

Aqui estão os fatos. Que Aqui está a conclusão.
conclusões podemos Que fatos podemos
chegar com eles? suportar com eles?

20

80
“Long Tail”

Pequenos
(Startups?)

Grandes
(Enterprisey?)

Pequenos
(Startups?)

D DD Grandes
(Enterprisey?)

Pequenos
(Startups?)

DD ”
D ht Grandes
“Lig
(Enterprisey?)

Ruby on Rails é a melhor forma de desenvolver
qualquer aplicação Web.

Todas as outras formas de desenvolver aplicações
Web são inferiores a Ruby on Rails.

Ruby on Rails é uma das maneiras competentes
de se desenvolver aplicações Web em alguns
cenários.

1994
(linguagem)

2004
(framework web)

1.8.7
1.9.2
1.9.3-dev
2.3.11
3.0.7
3.1-RC1

gem install rails

rails new nome_do_projeto

gem install rails

rails new nome_do_projeto

SIM! Via CLI! :-P

Request

Web Server

Rack Middlewares

Routes

Controller

View Model

Response Request

Web Server

Rack Middlewares

Routes

Controller

View Model

RubyGems Library Assembly (DLL)

Rake MSBuild

Bundler NuGet

> bundle list

Gems included by the bundle: * mail (2.2.19)
* abstract (1.0.0) * mime-types (1.16)
* actionmailer (3.0.7) * polyglot (0.3.1)
* actionpack (3.0.7) * rack (1.2.2)
* activemodel (3.0.7) * rack-mount (0.6.14)
* activerecord (3.0.7) * rack-test (0.5.7)
* activeresource (3.0.7) * rails (3.0.7)
* activesupport (3.0.7) * railties (3.0.7)
* arel (2.0.9) * rake (0.8.7)
* builder (2.1.2) * sqlite3 (1.3.3)
* bundler (1.0.13) * thor (0.14.6)
* erubis (2.6.6) * treetop (1.4.9)
* i18n (0.5.0) * tzinfo (0.3.27)

> rake -T
rake log:clear
rake about rake middleware
rake db:create rake notes
rake db:drop rake notes:custom
rake db:fixtures:load rake rails:template
rake db:migrate rake rails:update
rake db:migrate:status rake routes
rake db:rollback rake secret
rake db:schema:dump rake stats
rake db:schema:load rake test
rake db:seed rake test:recent
rake db:setup rake test:uncommitted
rake db:structure:dump rake time:zones:all
rake db:version rake tmp:clear
rake doc:app rake tmp:create

> rails generate
Usage: rails generate GENERATOR [args] [options]

General options:
-h, [--help] # Print generator's options and usage
-p, [--pretend] # Run but do not make any changes
-f, [--force] # Overwrite files that already exist
-s, [--skip] # Skip files that already exist
-q, [--quiet] # Suppress status output

Please choose a generator below.

Rails: observer
controller performance_test
generator plugin
helper resource
integration_test scaffold
mailer scaffold_controller
migration session_migration
model stylesheets

> rake middleware Rack
Middlewares
use ActionDispatch::Static
use Rack::Lock
use ActiveSupport::Cache::Strategy::LocalCache
use Rack::Runtime
use Rails::Rack::Logger
use ActionDispatch::ShowExceptions
use ActionDispatch::RemoteIp
use Rack::Sendfile
use ActionDispatch::Callbacks
use ActiveRecord::ConnectionAdapters::ConnectionManagement
use ActiveRecord::QueryCache
use ActionDispatch::Cookies
use ActionDispatch::Session::CookieStore
use ActionDispatch::Flash
use ActionDispatch::ParamsParser
use Rack::MethodOverride
use ActionDispatch::Head
use ActionDispatch::BestStandardsSupport
run Demo::Application.routes

Response Request

Web Server

Application
Rack Middlewares Server Rack:
Mongrel,
Routes Thin,
Passenger,
Controller Unicorn
View Model

Web Server:
NginX
Response Request
Apache
Web Server

Application
Rack Middlewares Server Rack:
Mongrel,
Routes Thin,
Passenger,
Controller Unicorn
View Model

NginX, Apache, Lighty, IIS

Reverse Proxy

Mongrel, Thin, Unicorn, Passenger

ActiveRecord/DataMapper

RDBMS/NoSQL


Reverse Proxy

Mongrel, Thin, Unicorn, Passenger TidyTDS

SQL Server
SQL Azure
RDBMS/NoSQL


Reverse Proxy


ActiveResource/RestClient/Savon

WCF
RDBMS/NoSQL
Web Services (REST, SOAP)

HAProxy

Reverse Proxy



RDBMS/NoSQL

HAProxy

Varnish
Reverse Proxy



RDBMS/NoSQL

HAProxy

Varnish
Reverse Proxy


Memcache

RDBMS/NoSQL

Request Request Request Request Request Request

HTTPD HTTPD HTTPD HTTPD HTTPD HTTPD

Rails Rails Rails Rails Rails Rails
App App App App App App

RDBMS


HTTPD HTTPD HTTPD HTTPD HTTPD HTTPD

Rails Rails Rails Rails Rails Rails
App App App App App App

Mais curto RDBMS
possível!

$(':checkbox').map(function() {
return this.id;
}).get().join(',');

Eventos Assíncronos
Envio de mensagens


NginX

Event
Machine

RDBMS


NginX

Event
Machine “Look Ma!
No Threads!”

RDBMS


NginX

5k ~ 10k
conexões
Event
Machine “Look Ma!
No Threads!”

RDBMS


NginX

5k ~ 10k
conexões
Conexões
Longas Event
Machine “Look Ma!
No Threads!”

RDBMS

myChannel.bind('coisa-criada', function(thing) {
alert('Uma coisa foi criada: ' + thing.name);
});

require 'pusher'

Pusher.app_id = 'APP_ID'
Pusher.key = 'API_KEY'
Pusher.secret = 'SECRET_KEY'

class ThingsController < ApplicationController
def create
@thing = Thing.new(params[:thing])

if @thing.save
Pusher['MEU_CANAL'].trigger('coisa-criada',
@thing.attributes)
end
end
end

Arquitetura de
Altíssima Concorrência

IN GOD WE TRUST
Todos os outros devem trazer dados

EXPERIENCE BY ITSELF BRINGS
NOTHING

Ciclo “Plan-Do-Check-Act”
(melhoria contínua)

P A
D C

Ciclo “Plan-Do-Check-Act”
(melhoria contínua)

P A
D C
STANDARD

2011

2010

2009

2008

2007 Ruby on Rails

2011

2010

2009

2.0.5

2008 6
2007 Ruby on Rails 2.0.0

2011

2010

2009

2.1.2

2.0.5 3
2.1.0
2008 6

2011

2010

2.2.3
2009

2.1.2
4
2.2.0
2.0.5 3
2.1.0
2008 6

2011 2.3.11
2010

2.2.3
12
2009
2.3.0

2.1.2
4
2.2.0
2.0.5 3
2.1.0
2008 6

3.0.7

2.3.11
8
2011

2010 3.0.0
2.2.3
12
2009
2.3.0

2.1.2
4
2.2.0
2.0.5 3
2.1.0
2008 6

3.0.7

2011 2.3.11
2010 3.0.0
2.2.3
2009

2.1.2
2.3.0
31
2.2.0 Versões!

2.0.5
2.1.0
2008


Request

Web Server

Rails
App

/public/stylesheets

Request

Web Server

Arquivos
Estáticos Rails
App

/public/stylesheets

Variáveis
$blue: #3bbfce;
$margin: 16px; /* CSS */

.content-navigation { .content-navigation {
border-color: $blue; border-color: #3bbfce;
color: color: #2b9eab;
darken($blue, 9%); }
}
.border {
.border { padding: 8px;
padding: $margin / 2; margin: 8px;
margin: $margin / 2; border-color: #3bbfce;
border-color: $blue; }
}

Nesting
table.hl { /* CSS */
margin: 2em 0;
td.ln { table.hl {
text-align: right; margin: 2em 0;
} }
} table.hl td.ln {
text-align: right;
li { }
font: {
family: serif; li {
weight: bold; font-family: serif;
size: 1.2em; font-weight: bold;
} font-size: 1.2em;
} }

Mixins
@mixin table-base {
th {
/* CSS */
text-align: center;
font-weight: bold;
#data {
}
td, th {padding: 2px} float: left;
} margin-left: 10px;
}
@mixin left($dist) { #data th {
float: left; text-align: center;
margin-left: $dist; font-weight: bold;
}
}
#data td, #data th {
#data {
@include left(10px); padding: 2px;
@include table-base; }
}

Selector Inheritance
/* CSS */

.error {
.error, .badError {
border: 1px #f00;
border: 1px #f00;
background: #fdd;
background: #fdd;
}
}
.error.intrusion {
font-size: 1.3em;
.error.intrusion,
font-weight: bold;
.badError.intrusion {
}
font-size: 1.3em;
font-weight: bold;
.badError {
}
@extend .error;
border-width: 3px;
.badError {
}
border-width: 3px;
}

class Animal
constructor: (@name) ->

move: (meters) ->
alert @name + " moved " + meters + "m."

class Snake extends Animal
move: ->
alert "Slithering..."
super 5

class Horse extends Animal
move: ->
alert "Galloping..."
super 45

sam = new Snake "Sammy the Python"
tom = new Horse "Tommy the Palomino"

sam.move()
tom.move()

var Animal, Horse, Snake, sam, tom;
var __hasProp = Object.prototype.hasOwnProperty,
__extends = function(child, parent) {
for (var key in parent) { if (__hasProp.call(parent,
key)) child[key] = parent[key]; }
function ctor() { this.constructor = child; }
ctor.prototype = parent.prototype;
child.prototype = new ctor;
class Animal child.__super__ = parent.prototype;
constructor: (@name) -> return child;
};
Animal = (function() {
move: (meters) -> function Animal(name) {
this.name = name;
alert @name + " moved " + meters + "m." }
Animal.prototype.move = function(meters) {
return alert(this.name + " moved " + meters + "m.");
class Snake extends Animal };
return Animal;
move: -> })();
alert "Slithering..." Snake = (function() {
__extends(Snake, Animal);
super 5 function Snake() {
Snake.__super__.constructor.apply(this, arguments);
}
class Horse extends Animal Snake.prototype.move = function() {
alert("Slithering...");
move: -> return Snake.__super__.move.call(this, 5);
alert "Galloping..." };
return Snake;
super 45 })();
Horse = (function() {
__extends(Horse, Animal);
sam = new Snake "Sammy the Python" function Horse() {
tom = new Horse "Tommy the Palomino" Horse.__super__.constructor.apply(this, arguments);
}
Horse.prototype.move = function() {
alert("Galloping...");
sam.move() return Horse.__super__.move.call(this, 45);
tom.move() };
return Horse;
})();
sam = new Snake("Sammy the Python");
tom = new Horse("Tommy the Palomino");
sam.move();
tom.move();
loadrun

Request Request

Web Server Web Server
(Desenvolvimento) (Produção)

Rails
App

/app/assets /public

Request Request


Rails
Sprockets
App

/app/assets /public

Request Request


Rails
Sprockets
App

Tilt

/app/assets /public

Request Request


Rails
Sprockets
App

Tilt

Ugli er

/app/assets /public

ENGINE FILE EXTENSIONS REQUIRED LIBRARIES

ERB .erb, .rhtml
none
Interpolated String .str

Erubis .erb, .rhtml, .erubis erubis

Haml .haml haml

Sass .sass
sass
Scss .scss

Less CSS .less less

Builder .builder builder

Liquid .liquid liquid

RDiscount rdiscount

Redcarpet redcarpet

BlueCloth .markdown, .mkd, .md bluecloth

Kramdown kramdown

Maruku maruku

RedCloth .textile redcloth

RDoc .rdoc rdoc

Radius .radius radius

Markaby .mab markaby

Nokogiri .nokogiri nokogiri

CoffeeScript .coffee coffee-script

Creole (Wiki markup) .creole creole

Rails 3.1:
Release Candidate
(may 2011)

RubyConf
Brasil
3 e 4 de Novembro
www.rubyconf.com.br

Pedro Franceschi
@pedroh96

15 anos

Pedro Franceschi
@pedroh96

9 anos

Pedro Franceschi
@pedroh96

6 anos

Pedro Franceschi
@pedroh96

Obrigado!
u.akita.ws/dnad11

.com.br

.NET Architects Day - DNAD 2011

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