Fisl 11 - Dicas de Desenvolvimento Web com Ruby

Ruby A apresentação já vai começar ...

AkitaOnRails.com @AkitaOnRails

www.slideshare.net/akitaonrails http://dl.dropbox.com/u/1732133/dicas-de-desenvolvimento-web-com-rails.zip boss@akitaonrails.com

Entendendo a Web Dicas sobre Desenvolvimento Web com Ruby Fabio Akita

Recapitulando ...

Rails não Escala

(TM) Rails não Escala

Blaine Cook http://www.akitaonrails.com/2008/6/17/chatting-with-blaine-cook-twitter

Para colocar as coisas em perspectiva, o Friendster foi escrito em Java e eles mudaram para PHP. MySpace foi escrito em ColdFusion e eles mudaram para ASP.NET. Blaine Cook http://www.akitaonrails.com/2008/6/17/chatting-with-blaine-cook-twitter

Para colocar as coisas em perspectiva, o Friendster foi escrito em Java e eles mudaram para PHP. MySpace foi escrito em ColdFusion e eles mudaram para ASP.NET. Quando as pessoas caem em problemas de escalabilidade, normalmente acham que a linguagem é o problema, mas eu acho que isso raramente é a realidade. Blaine Cook http://www.akitaonrails.com/2008/6/17/chatting-with-blaine-cook-twitter

“O The New York Times usou Ruby on Rails para agregar, analizar e mostrar os resultados das eleições em quase tempo real em um de seus sites mais acessados de todos os tempos.” http://www.computerworld.com.au/article/268003/ruby_rails_rolls_into_enterprise?fp=16&fpid=1

Browser Web Server MySQL

Browser Varnish/HAProxy Web Server MySQL

Browser Varnish/HAProxy Web Server Memcached MySQL

Browser Varnish/HAProxy Web Server Memcached MySQL CouchDB/MongoDB

Ruby é Lento

(TM) Ruby é Lento

Existem mentiras, mentiras malditas e estatísticas.

x mais lento que C++

x mais lento que C++ 0 32.5 65 97.5 130 Python 2 Ruby 1.9 JRuby Perl Python 3 PHP Ruby 1.8

Homepage: 331 ms

Homepage: 331 ms Total: 5.45 s

Performance != Escalabilidade

Sempre se Lembre Poderíamos contratar um Macaco Treinado para fazer seu Trabalho!

Exemplo

6 Técnicas

Menos Requisições

Mini que CSS e Javascript

Juicer http://github.com/cjohansen/juicer/

gem install juicer script/plugin install git://github.com/ktheory/juicer-rails.git

juicer install yuicompressor juicer install jslint juicer install closure_compiler

/app/views/layouts/application.html.erb <%= juiced_tag '/stylesheets/application.css' %> <%= yield(:head) %> </head> <body> ... <%= juiced_tag '/javascripts/application.js' %> </body>

/public/stylesheets/application.css @import url("reset.css"); @import url("base.css"); @import url("fonts.css"); ... /public/javascripts/application.js /* @depends jquery-1.4.min.js @depends jquery.edit_in_place.js @depends jqueryamail.js */ ...

juicer merge public/stylesheets/application.css public/stylesheets/application.min.css juicer merge -i public/javascripts/application.js public/javascripts/application.min.js

DEVELOPMENT

PRODUCTION

Asset Hosts Navegadores abrem poucas conexões simultâneas por domínio

/app/controllers/hello_controller.rb def gallery gallery_path = File.join(Rails.root, "public/images/gallery/") @images = Dir.glob(gallery_path + "*").map{ |f| f.gsub(gallery_path, "") } end

/app/controllers/hello_controller.rb def gallery gallery_path = File.join(Rails.root, "public/images/gallery/") @images = Dir.glob(gallery_path + "*").map{ |f| f.gsub(gallery_path, "") } end /app/views/hello/gallery.html.erb <% title "Gallery" %> <% @images.each do |image| -%> <%= image_tag "gallery/#{image}" %> <% end -%>

DEVELOPMENT

/con g/environments/production.rb config.action_controller.asset_host = Proc.new do |source, request| protocol = if request.ssl? request.headers["USER_AGENT"] =~ /(Safari)/ ? "http" : "https" else "http" end "#{protocol}://asset#{rand(6) + 1}.akitaonrails.local:3000" end

/etc/hosts ## # Host Database # # localhost is used to configure the loopback interface # when the system is booting. Do not change this entry. ## 127.0.0.1 localhost 255.255.255.255 broadcasthost ::1 localhost fe80::1%lo0 localhost 127.0.0.1 asset1.akitaonrails.local asset2.akitaonrails.local asset3.akitaonrails.local asset4.akitaonrails.local asset5.akitaonrails.local asset6.akitaonrails.local www.akitaonrails.local

PRODUCTION

Javascript embaixo!

/app/views/layouts/application.html.erb <head> <title><%= h(yield(:title) || "Untitled") %></title> <%= stylesheet_link_tag 'application' %> <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.0/jquery.min.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.min.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/chrome-frame/1.0.2/ CFInstall.min.js" type="text/javascript"></script> <%= yield(:head) %> </head> <body> ...

/app/views/layouts/application.html.erb ... <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.0/jquery.min.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.min.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/chrome-frame/1.0.2/ CFInstall.min.js" type="text/javascript"></script> <script type="text/javascript"> // meu javascript customizado ... </script> </body> </html>

a2enmod de ate editar /etc/apache2/mods-available/de ate.conf

/etc/apache2/mods-available/de ate.conf <IfModule mod_deflate.c> AddOutputFilterByType DEFLATE text/plain AddOutputFilterByType DEFLATE text/html AddOutputFilterByType DEFLATE text/xml AddOutputFilterByType DEFLATE text/css AddOutputFilterByType DEFLATE image/svg+xml AddOutputFilterByType DEFLATE image/x-icon AddOutputFilterByType DEFLATE application/xml AddOutputFilterByType DEFLATE application/xhtml+xml AddOutputFilterByType DEFLATE application/rss+xml AddOutputFilterByType DEFLATE application/javascript AddOutputFilterByType DEFLATE application/x-javascript AddOutputFilterByType DEFLATE application/x-httpd-php AddOutputFilterByType DEFLATE application/x-httpd-fastphp AddOutputFilterByType DEFLATE application/x-httpd-eruby DeflateCompressionLevel 9 # Netscape 4.X has some problems BrowserMatch ^Mozilla/4 gzip-only-text/html # Netscape 4.06-4.08 have some more problems BrowserMatch ^Mozilla/4.0[678] no-gzip # MSIE masquerades as Netscape, but it is fine BrowserMatch bMSIE !no-gzip !gzip-only-text/html </IfModule>

Cabeçalhos de Expiração

a2enmod expires editar /etc/apache2/mods-available/expires.conf

/etc/apache2/mods-available/expires.conf <IfModule mod_expires.c> ExpiresByType image/x-icon "access plus 1 year" ExpiresByType image/png "access plus 1 year" ExpiresByType image/jpg "access plus 1 year" ExpiresByType image/gif "access plus 1 year" ExpiresByType image/jpeg "access plus 1 year" ExpiresByType application/pdf "access plus 1 year" ExpiresByType audio/x-wav "access plus 1 year" ExpiresByType audio/mpeg "access plus 1 year" ExpiresByType video/mpeg "access plus 1 year" ExpiresByType video/mp4 "access plus 1 year" ExpiresByType video/quicktime "access plus 1 year" ExpiresByType video/x-ms-wmv "access plus 1 year" ExpiresByType application/x-shockwave-flash "access 1 month" ExpiresByType text/css "access plus 1 year" ExpiresByType text/javascript "access plus 1 year" </IfModule>

Cache Busters

/app/views/layouts/application.html.erb <%= stylesheet_link_tag 'application' %> <%= javascript_include_tag 'application' %> <%= image_tag "logo.png" %>

/app/views/layouts/application.html.erb <link href="/stylesheets/application.css?1264345891" media="screen" rel="stylesheet" type="text/css" /> <script src="/javascripts/application.js?1264345058" type="text/javascript"></script> <img alt="Logo" src="/images/logo.png?1268943058" />

Use CDNs

/app/views/layouts/application.html.erb <script src="/javascripts/jquery-1.4.min.js" type="text/javascript"></script> <script src="/javascripts/jquery-ui-1.7.2.min.js" type="text/javascript"></script> <script src="/javascripts/swfobject-2.2.js" type="text/javascript"></script> <script src="/javascripts/CFInstall-1.0.2.min.js" type="text/javascript"></script>

/app/views/layouts/application.html.erb <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.0/jquery.min.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/jquery-ui.min.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/swfobject/2.2/swfobject.js" type="text/javascript"></script> <script src="http://ajax.googleapis.com/ajax/libs/chrome-frame/1.0.2/CFInstall.min.js" type="text/javascript"></script>

Search

select * from ... where ... like “%...%”

select * from ... where ... like “%...%” or ... like “%...%” or ... like “%...%” or ... like “%...%” or ... like “%...%”

Open Source Enterprise Search Platform Baseado no famoso Lucene Full Text Search, com relevância Indexa documentos (Word, PDF, etc) Interface REST Roda em containers de Servlet (Tomcat)

SOLR Sphinx Xapian

select * from ... where ... like “%...%” or ... like “%...%” or ... like “%...%” or ... like “%...%” or ... like “%...%”

Tarefas Assíncronas

Requisição

Processamento Requisição

Processamento Requisição Resposta

Crontab

RMagick

Redis Workers Resque-Web

291 ms Processamento Requisição

32 ms Processamento Requisição Resposta Worker

Resque Redis Delayed Job SQL Warren RabbitMQ Whenever Cron Jobs

Imagens Relatórios Web Services Transações

Aprendendo Mais

RAILS LABS

RAILSCASTS.com

caelum.com.br

egenial.com.br

Entenda os browsers Entenda HTTP Arquiteturas Mundo Assíncrono Mundo não Relacional

Thx! www.slideshare.net/akitaonrails http://dl.dropbox.com/u/1732133/dicas-de-desenvolvimento-web-com-rails.zip boss@akitaonrails.com

Fisl 11 - Dicas de Desenvolvimento Web com Ruby

by Fabio Akita on Jul 26, 2010

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