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QConSP 2015 - Dicas de Performance para Aplicações Web

The document provides insights into web performance optimization strategies, particularly in Ruby on Rails applications. It includes code samples for caching, asynchronous job processing, and using third-party services like Cloudinary for asset management. Additionally, it covers best practices for handling user uploads and monitoring performance metrics.

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DICAS DE PERFORMANCE WEB Fabio Akita @AkitaOnRails
Back EndBrowser Front End Render External Services
9 DICAS
SLIDESHARE.NET/ AKITAONRAILS
MONITORING
1.4 MILHOES DEVISITANTES UNICOS!!
Ruby 2.1
Ruby 2.2
CACHING
def  sitemap      sleep  3      @posts  =  Post.select([  :id,  :slug,  :updated_at,  :published_at  ]).published      respond_to  do  |format|          format.xml  {  render  layout:  false  }      end   end Processing  by  ArchivesController#sitemap  as  XML      Rendered  archives/sitemap.xml.builder  (785.5ms)   Completed  200  OK  in  3879.4ms  (Views:  770.4ms  |  ActiveRecord:  18.7ms  |  Solr:  0.0ms)
def  sitemap      @posts  =  cache('sitemap',  :expires_in  =>  12.hours)  {          sleep  3          Post.select([  :id,  :slug,  :updated_at,  :published_at  ]).published      }      respond_to  do  |format|          format.xml  {  render  layout:  false  }      end   end Processing  by  ArchivesController#sitemap  as  XML      Rendered  archives/sitemap.xml.builder  (763.3ms)   Completed  200  OK  in  842.4ms  (Views:  754.2ms  |  ActiveRecord:  13.3ms  |  Solr:  0.0ms)
def  sitemap      @posts  =  cache('sitemap',  :expires_in  =>  12.hours)  {          Post.select([  :id,  :slug,  :updated_at,  :published_at  ]).published      }      if  stale?(last_modified:  @posts.first.updated_at.utc,          etag:  "posts/#{@posts.count}-­‐#{@posts.first.updated_at.utc}")          respond_to  do  |format|              format.xml  {  render  layout:  false  }          end      end   end Processing  by  ArchivesController#sitemap  as  XML   Completed  304  Not  Modified  in  6.2ms  (ActiveRecord:  1.7ms)
2s!
198ms!
ASSET PIPELINE
} }
UPLOADS
Browser 1s
BackendBrowser 1s
Image Magick BackendBrowser 1s
S3 Image Magick BackendBrowser 1s
S3 Image Magick BackendBrowser 1s 2 segundos
Browser 1s
Browser 1s S3
BackendBrowser 1s S3
BackendBrowser 1s 200 ms S3
BackendBrowser 1s 200 ms S3 Image Magick 700 ms
#  Gemfile   gem  'cloudinary'   gem  'attachinary'
#  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"
#  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"#  app/models/user.rb   class  User  <  ActiveRecord::Base      attr_accessible  :name            has_attachment    :avatar      has_attachments  :photos,  maximum:  3   end
#  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"#  app/models/user.rb   class  User  <  ActiveRecord::Base      attr_accessible  :name            has_attachment    :avatar      has_attachments  :photos,  maximum:  3   end #  app/views/users/_form.html.slim   =  form_for(@user)  do  |user_form|          =  user_form.text_field(:name)          =  attachinary_file_field_tag  ‘user[avatar]',              @user,  :avatar          =  attachinary_file_field_tag  ‘user[photos]’,              @user,  :photos          =  user_form.submit("Save")
#  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"#  app/models/user.rb   class  User  <  ActiveRecord::Base      attr_accessible  :name            has_attachment    :avatar      has_attachments  :photos,  maximum:  3   end #  app/views/users/_form.html.slim   =  form_for(@user)  do  |user_form|          =  user_form.text_field(:name)          =  attachinary_file_field_tag  ‘user[avatar]',              @user,  :avatar          =  attachinary_file_field_tag  ‘user[photos]’,              @user,  :photos          =  user_form.submit("Save") #  app/controllers/users_controller.rb   ...      def  create          @user  =  User.new(params[:user])          @user.save!      end
#  app/views/users/show.html.slim   -­‐  if  user.avatar.present?      =  cl_image_tag(user.avatar.path,  width:  80,  height:  100,  crop:  :thumb,  gravity:  :face)      -­‐  user.photos.each  do  |photo|          =  cl_image_tag(photo.path,  size:  '70x50',  crop:  :fill,  radius:  20) #  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"#  app/models/user.rb   class  User  <  ActiveRecord::Base      attr_accessible  :name            has_attachment    :avatar      has_attachments  :photos,  maximum:  3   end #  app/views/users/_form.html.slim   =  form_for(@user)  do  |user_form|          =  user_form.text_field(:name)          =  attachinary_file_field_tag  ‘user[avatar]',              @user,  :avatar          =  attachinary_file_field_tag  ‘user[photos]’,              @user,  :photos          =  user_form.submit("Save") #  app/controllers/users_controller.rb   ...      def  create          @user  =  User.new(params[:user])          @user.save!      end
CDN
AssetsRailsBrowser 1s 5 segundos
Assets RailsBrowser 1s 200 ms 4 segundos
http://d3vam04na8c92l.cloudfront.net/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css
http://d3vam04na8c92l.cloudfront.net/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css
http://d3vam04na8c92l.cloudfront.net/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css
http://d3vam04na8c92l.cloudfront.net/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css http://www.mydomain.com/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css
http://d3vam04na8c92l.cloudfront.net/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css http://www.mydomain.com/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css
http://d3vam04na8c92l.cloudfront.net/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css http://www.mydomain.com/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css
http://d3vam04na8c92l.cloudfront.net/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css http://www.mydomain.com/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css
http://d3vam04na8c92l.cloudfront.net/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css http://www.mydomain.com/stylesheets/application-6502e5a88f02b90aeb32c2dd21ea37ab.css
#  config/environments/production.rb   config.action_controller.asset_host  =  "d3vam04na8c92l.cloudfront.net" <%=  stylesheet_link_tag        "application",  :media  =>  "all"  %>   <%=  javascript_include_tag  "application"  %>   <%=  image_tag("rails.png")  %> <link  href="http://d3vam04na8c92l.cloudfront.net/stylesheets/application-­‐6502e5a88f02b90aeb32c2dd21ea37ab.css"  rel="stylesheet"  />
DATABASE
#  Gemfile   gem  "lol_dba",  group:  :development   #  no  Terminal   bundle  install   bundle  exec  rake  db:find_indexes
#  app/controllers/posts_controller.rb   def  index      @posts  =  Post.all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end
#  app/controllers/posts_controller.rb   def  index      @posts  =  Post.all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end <%  @posts.each  do  |post|  %>      <tr>          <td><%=  post.name  %></td>          <td><%=  post.comments.size  %></td>          <td><%=  link_to  'Show',  post  %></td>          <td><%=  link_to  'Edit',  edit_post_path(post)  %></td>          <td><%=  link_to  'Destroy',  post,  confirm:  'Are  you  sure?',  method:  :delete  %></td>      </tr>   <%  end  %>
#  app/controllers/posts_controller.rb   def  index      @posts  =  Post.all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end <%  @posts.each  do  |post|  %>      <tr>          <td><%=  post.name  %></td>          <td><%=  post.comments.size  %></td>          <td><%=  link_to  'Show',  post  %></td>          <td><%=  link_to  'Edit',  edit_post_path(post)  %></td>          <td><%=  link_to  'Destroy',  post,  confirm:  'Are  you  sure?',  method:  :delete  %></td>      </tr>   <%  end  %> Started  GET  "/posts/"  for  192.168.47.2  at  2015-­‐03-­‐23  18:31:11  +0000   Cannot  render  console  from  192.168.47.2!  Allowed  networks:  127.0.0.1,  ::1,  127.0.0.0/127.255.255.255      ActiveRecord::SchemaMigration  Load  (0.1ms)    SELECT  "schema_migrations".*  FROM  "schema_migrations"   Processing  by  PostsController#index  as  HTML      Post  Load  (0.2ms)    SELECT  "posts".*  FROM  "posts"      Comment  Load  (0.2ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  =  ?    [["post_id",  1]]      Comment  Load  (0.1ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  =  ?    [["post_id",  2]]      Rendered  posts/index.html.erb  within  layouts/application  (25.3ms)   Completed  200  OK  in  679ms  (Views:  666.4ms  |  ActiveRecord:  1.0ms)
#  app/controllers/posts_controller.rb   def  index      @posts  =  Post.all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end <%  @posts.each  do  |post|  %>      <tr>          <td><%=  post.name  %></td>          <td><%=  post.comments.size  %></td>          <td><%=  link_to  'Show',  post  %></td>          <td><%=  link_to  'Edit',  edit_post_path(post)  %></td>          <td><%=  link_to  'Destroy',  post,  confirm:  'Are  you  sure?',  method:  :delete  %></td>      </tr>   <%  end  %> Started  GET  "/posts/"  for  192.168.47.2  at  2015-­‐03-­‐23  18:31:11  +0000   Cannot  render  console  from  192.168.47.2!  Allowed  networks:  127.0.0.1,  ::1,  127.0.0.0/127.255.255.255      ActiveRecord::SchemaMigration  Load  (0.1ms)    SELECT  "schema_migrations".*  FROM  "schema_migrations"   Processing  by  PostsController#index  as  HTML      Post  Load  (0.2ms)    SELECT  "posts".*  FROM  "posts"      Comment  Load  (0.2ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  =  ?    [["post_id",  1]]      Comment  Load  (0.1ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  =  ?    [["post_id",  2]]      Rendered  posts/index.html.erb  within  layouts/application  (25.3ms)   Completed  200  OK  in  679ms  (Views:  666.4ms  |  ActiveRecord:  1.0ms)
Started  GET  "/posts/"  for  192.168.47.2  at  2015-­‐03-­‐23  18:37:31  +0000   Cannot  render  console  from  192.168.47.2!  Allowed  networks:  127.0.0.1,  ::1,  127.0.0.0/127.255.255.255      ActiveRecord::SchemaMigration  Load  (0.1ms)    SELECT  "schema_migrations".*  FROM  "schema_migrations"   Processing  by  PostsController#index  as  HTML      Post  Load  (0.2ms)    SELECT  "posts".*  FROM  "posts"      Comment  Load  (0.2ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  IN  (1,  2)      Rendered  posts/index.html.erb  within  layouts/application  (25.8ms)   Completed  200  OK  in  109ms  (Views:  96.4ms  |  ActiveRecord:  0.9ms) #  app/controllers/posts_controller.rb   def  index      @posts  =  Post.includes(:comments).all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end <%  @posts.each  do  |post|  %>      <tr>          <td><%=  post.name  %></td>          <td><%=  post.comments.size  %></td>          <td><%=  link_to  'Show',  post  %></td>          <td><%=  link_to  'Edit',  edit_post_path(post)  %></td>          <td><%=  link_to  'Destroy',  post,  confirm:  'Are  you  sure?',  method:  :delete  %></td>      </tr>   <%  end  %>
SEARCH
ASYNC JOBS
Browser 1s
BackendBrowser 1s
Tarefa DemoradaBackendBrowser 1s
Tarefa DemoradaBackendBrowser 1s 4 segundos
Browser 1s
BackendBrowser 1s
BackendBrowser 1s Redis
BackendBrowser 1s 200 ms Redis
BackendBrowser 1s 200 ms Redis Tarefa Demorada (Worker) 3.8 segundos
class  VerySlowJob  <  ActiveJob::Base      queue_as  :default          def  perform(*args)          #  Tarefa  Demorada      end   end
class  VerySlowJob  <  ActiveJob::Base      queue_as  :default          def  perform(*args)          #  Tarefa  Demorada      end   end VerySlowJob.perform_later  record
class  VerySlowJob  <  ActiveJob::Base      queue_as  :default          def  perform(*args)          #  Tarefa  Demorada      end   end VerySlowJob.perform_later  record VerySlowJob.set(wait_until:   Date.tomorrow.noon).perform_later(record)
class  VerySlowJob  <  ActiveJob::Base      queue_as  :default          def  perform(*args)          #  Tarefa  Demorada      end   end VerySlowJob.set(wait:  1.week).perform_later(record) VerySlowJob.perform_later  record VerySlowJob.set(wait_until:   Date.tomorrow.noon).perform_later(record)
#  app/workers/report_job.rb   class  ReportJob  <  ActiveJob::Base      queue_as  :default          def  perform(email,  from_date  =  nil,  to_date  =  nil)          now  =  Time.zone.now          from_date  ||=  now  -­‐  1.year          to_date      ||=  now          file_path  =  ModelGigante.generate_excel(from_date,  to_date)          NotifyReportMailer.send(email,  file_path)      end   end
#  app/controllers/reports_controller.rb   #  ...   def  create      ReportJob.perform_later(params[:email],          params[:from_date],  params[:to_date])      flash[:notice]  =  "Report  is  being  generated.          It  will  be  sent  to  your  email."      redirect_to  reports_path   end   #  ... #  app/workers/report_job.rb   class  ReportJob  <  ActiveJob::Base      queue_as  :default          def  perform(email,  from_date  =  nil,  to_date  =  nil)          now  =  Time.zone.now          from_date  ||=  now  -­‐  1.year          to_date      ||=  now          file_path  =  ModelGigante.generate_excel(from_date,  to_date)          NotifyReportMailer.send(email,  file_path)      end   end
ASYNC MESSAGES
http://blog.tryneighborly.com/amazon-sns-for-apns-on-rails/
<!-­‐-­‐  chat.html  -­‐-­‐>   <script  src="//js.pusher.com/2.2/pusher.min.js"></script>   <script>   $(function()  {          var  pusher  =  new  Pusher('YOUR_APP_KEY');          var  channel  =  pusher.subscribe('my-­‐app-­‐chat');          channel.bind('new-­‐message',  function(data)  {                  $('#chat-­‐box').append(data.message);          });   })   </script>
<!-­‐-­‐  chat.html  -­‐-­‐>   <script  src="//js.pusher.com/2.2/pusher.min.js"></script>   <script>   $(function()  {          var  pusher  =  new  Pusher('YOUR_APP_KEY');          var  channel  =  pusher.subscribe('my-­‐app-­‐chat');          channel.bind('new-­‐message',  function(data)  {                  $('#chat-­‐box').append(data.message);          });   })   </script> #  config/initializer/pusher.rb   Pusher.app_id  =  ENV['PUSHER_APP_ID']   Pusher.key        =  ENV['PUSHER_APP_KEY']   Pusher.secret  =  ENV['PUSHER_APP_SECRET']  
<!-­‐-­‐  chat.html  -­‐-­‐>   <script  src="//js.pusher.com/2.2/pusher.min.js"></script>   <script>   $(function()  {          var  pusher  =  new  Pusher('YOUR_APP_KEY');          var  channel  =  pusher.subscribe('my-­‐app-­‐chat');          channel.bind('new-­‐message',  function(data)  {                  $('#chat-­‐box').append(data.message);          });   })   </script> #  config/initializer/pusher.rb   Pusher.app_id  =  ENV['PUSHER_APP_ID']   Pusher.key        =  ENV['PUSHER_APP_KEY']   Pusher.secret  =  ENV['PUSHER_APP_SECRET']   #  app/workers/new_message_worker.rb   require  'pusher'   class  NewMessageWorker      include  Sidekiq::Worker            def  perform(message_id)          @message  =  Message.find(message_id)          Pusher.trigger('my-­‐app-­‐chat',  'new-­‐message',  {:message  =>  @message})      end   end
<!-­‐-­‐  chat.html  -­‐-­‐>   <script  src="//js.pusher.com/2.2/pusher.min.js"></script>   <script>   $(function()  {          var  pusher  =  new  Pusher('YOUR_APP_KEY');          var  channel  =  pusher.subscribe('my-­‐app-­‐chat');          channel.bind('new-­‐message',  function(data)  {                  $('#chat-­‐box').append(data.message);          });   })   </script> #  app/controllers/messages_controller.rb   #  ...   def  create      @message  =  Message.new(params[:message])      if  @messsage.save          NewMessageWorker.perform_async(@message.id)          #  ...   end   #  ... #  config/initializer/pusher.rb   Pusher.app_id  =  ENV['PUSHER_APP_ID']   Pusher.key        =  ENV['PUSHER_APP_KEY']   Pusher.secret  =  ENV['PUSHER_APP_SECRET']   #  app/workers/new_message_worker.rb   require  'pusher'   class  NewMessageWorker      include  Sidekiq::Worker            def  perform(message_id)          @message  =  Message.find(message_id)          Pusher.trigger('my-­‐app-­‐chat',  'new-­‐message',  {:message  =>  @message})      end   end
TUNING RUBY
http://www.infoq.com/news/2014/12/ruby-2.2.0-released
http://www.infoq.com/news/2014/12/ruby-2.2.0-released
• Mark and Sweep GC (1.8+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
• Mark and Sweep GC (1.8+) • Bitmap Marking GC (1.9.3+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
• Mark and Sweep GC (1.8+) • Bitmap Marking GC (1.9.3+) • Lazy Sweep GC (2.0.0+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
• Mark and Sweep GC (1.8+) • Bitmap Marking GC (1.9.3+) • Lazy Sweep GC (2.0.0+) • Restricted Generational GC (RGenGC 2.1.0+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
• Mark and Sweep GC (1.8+) • Bitmap Marking GC (1.9.3+) • Lazy Sweep GC (2.0.0+) • Restricted Generational GC (RGenGC 2.1.0+) • Restricted Incremental GC (RIncGC 2.2.0+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
TRADE-OFF: + GC OU + RAM
#  Gemfile   source  'https://rubygems.org'   ruby  "2.2.1"   #  performance  tuning   gem  'escape_utils'   gem  'fast_blank'   gem  'oj'   gem  'oj_mimic_json' http://marianposaceanu.com/articles/improve-rails-performance-by-adding-a-few-gems
#  Gemfile   source  'https://rubygems.org'   if  ENV['RAILS_ENV']  ==  'production'      ruby  '1.9.3',  :engine  =>  'jruby',  :engine_version  =>  '1.7.18'   else      ruby  '2.2.1'   end   gem  'rails',  '4.2.0'   gem  'rails-­‐api'   gem  'srt'   gem  'pg',  platforms:  'mri'   gem  'activerecord-­‐jdbcpostgresql-­‐adapter',  platforms:  'jruby'   gem  'sidekiq'   gem  'dalli'   gem  'puma'   gem  'rack-­‐cache'   gem  'rack-­‐cors',  require:  'rack/cors'   gem  'rails_12factor'   gem  'newrelic_rpm'
#  Gemfile   source  'https://rubygems.org'   if  ENV['RAILS_ENV']  ==  'production'      ruby  '1.9.3',  :engine  =>  'jruby',  :engine_version  =>  '1.7.18'   else      ruby  '2.2.1'   end   gem  'rails',  '4.2.0'   gem  'rails-­‐api'   gem  'srt'   gem  'pg',  platforms:  'mri'   gem  'activerecord-­‐jdbcpostgresql-­‐adapter',  platforms:  'jruby'   gem  'sidekiq'   gem  'dalli'   gem  'puma'   gem  'rack-­‐cache'   gem  'rack-­‐cors',  require:  'rack/cors'   gem  'rails_12factor'   gem  'newrelic_rpm'
#  Gemfile   source  'https://rubygems.org'   if  ENV['RAILS_ENV']  ==  'production'      ruby  '1.9.3',  :engine  =>  'jruby',  :engine_version  =>  '1.7.18'   else      ruby  '2.2.1'   end   gem  'rails',  '4.2.0'   gem  'rails-­‐api'   gem  'srt'   gem  'pg',  platforms:  'mri'   gem  'activerecord-­‐jdbcpostgresql-­‐adapter',  platforms:  'jruby'   gem  'sidekiq'   gem  'dalli'   gem  'puma'   gem  'rack-­‐cache'   gem  'rack-­‐cors',  require:  'rack/cors'   gem  'rails_12factor'   gem  'newrelic_rpm'
#  Gemfile   source  'https://rubygems.org'   if  ENV['RAILS_ENV']  ==  'production'      ruby  '1.9.3',  :engine  =>  'jruby',  :engine_version  =>  '1.7.18'   else      ruby  '2.2.1'   end   gem  'rails',  '4.2.0'   gem  'rails-­‐api'   gem  'srt'   gem  'pg',  platforms:  'mri'   gem  'activerecord-­‐jdbcpostgresql-­‐adapter',  platforms:  'jruby'   gem  'sidekiq'   gem  'dalli'   gem  'puma'   gem  'rack-­‐cache'   gem  'rack-­‐cors',  require:  'rack/cors'   gem  'rails_12factor'   gem  'newrelic_rpm'
9 DICAS
Monitoring New Relic
Monitoring New Relic Caching Memcache, ETAG
Monitoring New Relic Caching Memcache, ETAG Assets CloudFlare, Cloudinary
Monitoring New Relic Caching Memcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL
Monitoring New Relic Caching Memcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic
Monitoring New Relic Caching Memcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis
Monitoring New Relic Caching Memcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis Async Messages pusher.com
Monitoring New Relic Caching Memcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis Async Messages pusher.com Auto scale HireFire,AdeptScale
Monitoring New Relic Caching Memcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis Async Messages pusher.com Auto scale HireFire,AdeptScale Rubies Ruby 2.2.1, JRuby
Monitoring New Relic Caching Memcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis Async Messages pusher.com Auto scale HireFire,AdeptScale Rubies Ruby 2.2.1, JRuby Deployment Heroku
OBRIGADO slideshare.net/akitaonrails

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QConSP 2015 - Dicas de Performance para Aplicações Web

  • 1.
    DICAS DE PERFORMANCE WEB FabioAkita @AkitaOnRails
  • 11.
  • 15.
  • 16.
  • 17.
  • 26.
  • 30.
  • 31.
  • 35.
  • 40.
    def  sitemap      sleep  3      @posts  =  Post.select([  :id,  :slug,  :updated_at,  :published_at  ]).published      respond_to  do  |format|          format.xml  {  render  layout:  false  }      end   end Processing  by  ArchivesController#sitemap  as  XML      Rendered  archives/sitemap.xml.builder  (785.5ms)   Completed  200  OK  in  3879.4ms  (Views:  770.4ms  |  ActiveRecord:  18.7ms  |  Solr:  0.0ms)
  • 41.
    def  sitemap      @posts  =  cache('sitemap',  :expires_in  =>  12.hours)  {          sleep  3          Post.select([  :id,  :slug,  :updated_at,  :published_at  ]).published      }      respond_to  do  |format|          format.xml  {  render  layout:  false  }      end   end Processing  by  ArchivesController#sitemap  as  XML      Rendered  archives/sitemap.xml.builder  (763.3ms)   Completed  200  OK  in  842.4ms  (Views:  754.2ms  |  ActiveRecord:  13.3ms  |  Solr:  0.0ms)
  • 42.
    def  sitemap      @posts  =  cache('sitemap',  :expires_in  =>  12.hours)  {          Post.select([  :id,  :slug,  :updated_at,  :published_at  ]).published      }      if  stale?(last_modified:  @posts.first.updated_at.utc,          etag:  "posts/#{@posts.count}-­‐#{@posts.first.updated_at.utc}")          respond_to  do  |format|              format.xml  {  render  layout:  false  }          end      end   end Processing  by  ArchivesController#sitemap  as  XML   Completed  304  Not  Modified  in  6.2ms  (ActiveRecord:  1.7ms)
  • 44.
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  • 55.
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  • 66.
  • 69.
    #  Gemfile   gem  'cloudinary'   gem  'attachinary'
  • 70.
    #  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"
  • 71.
    #  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"#  app/models/user.rb   class  User  <  ActiveRecord::Base      attr_accessible  :name            has_attachment    :avatar      has_attachments  :photos,  maximum:  3   end
  • 72.
    #  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"#  app/models/user.rb   class  User  <  ActiveRecord::Base      attr_accessible  :name            has_attachment    :avatar      has_attachments  :photos,  maximum:  3   end #  app/views/users/_form.html.slim   =  form_for(@user)  do  |user_form|          =  user_form.text_field(:name)          =  attachinary_file_field_tag  ‘user[avatar]',              @user,  :avatar          =  attachinary_file_field_tag  ‘user[photos]’,              @user,  :photos          =  user_form.submit("Save")
  • 73.
    #  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"#  app/models/user.rb   class  User  <  ActiveRecord::Base      attr_accessible  :name            has_attachment    :avatar      has_attachments  :photos,  maximum:  3   end #  app/views/users/_form.html.slim   =  form_for(@user)  do  |user_form|          =  user_form.text_field(:name)          =  attachinary_file_field_tag  ‘user[avatar]',              @user,  :avatar          =  attachinary_file_field_tag  ‘user[photos]’,              @user,  :photos          =  user_form.submit("Save") #  app/controllers/users_controller.rb   ...      def  create          @user  =  User.new(params[:user])          @user.save!      end
  • 74.
    #  app/views/users/show.html.slim   -­‐  if  user.avatar.present?      =  cl_image_tag(user.avatar.path,  width:  80,  height:  100,  crop:  :thumb,  gravity:  :face)      -­‐  user.photos.each  do  |photo|          =  cl_image_tag(photo.path,  size:  '70x50',  crop:  :fill,  radius:  20) #  Gemfile   gem  'cloudinary'   gem  'attachinary' #  config/cloudinary.yml   production:      cloud_name:  "sample"      api_key:  "874837483274837"      api_secret:  "a676b67565c6767a6767d6767f676fe1"#  app/models/user.rb   class  User  <  ActiveRecord::Base      attr_accessible  :name            has_attachment    :avatar      has_attachments  :photos,  maximum:  3   end #  app/views/users/_form.html.slim   =  form_for(@user)  do  |user_form|          =  user_form.text_field(:name)          =  attachinary_file_field_tag  ‘user[avatar]',              @user,  :avatar          =  attachinary_file_field_tag  ‘user[photos]’,              @user,  :photos          =  user_form.submit("Save") #  app/controllers/users_controller.rb   ...      def  create          @user  =  User.new(params[:user])          @user.save!      end
  • 75.
  • 76.
  • 77.
  • 78.
  • 79.
  • 80.
  • 81.
  • 82.
  • 83.
  • 84.
  • 85.
  • 86.
    #  config/environments/production.rb   config.action_controller.asset_host  =  "d3vam04na8c92l.cloudfront.net" <%=  stylesheet_link_tag        "application",  :media  =>  "all"  %>   <%=  javascript_include_tag  "application"  %>   <%=  image_tag("rails.png")  %> <link  href="http://d3vam04na8c92l.cloudfront.net/stylesheets/application-­‐6502e5a88f02b90aeb32c2dd21ea37ab.css"  rel="stylesheet"  />
  • 87.
  • 91.
    #  Gemfile   gem  "lol_dba",  group:  :development   #  no  Terminal   bundle  install   bundle  exec  rake  db:find_indexes
  • 93.
    #  app/controllers/posts_controller.rb   def  index      @posts  =  Post.all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end
  • 94.
    #  app/controllers/posts_controller.rb   def  index      @posts  =  Post.all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end <%  @posts.each  do  |post|  %>      <tr>          <td><%=  post.name  %></td>          <td><%=  post.comments.size  %></td>          <td><%=  link_to  'Show',  post  %></td>          <td><%=  link_to  'Edit',  edit_post_path(post)  %></td>          <td><%=  link_to  'Destroy',  post,  confirm:  'Are  you  sure?',  method:  :delete  %></td>      </tr>   <%  end  %>
  • 95.
    #  app/controllers/posts_controller.rb   def  index      @posts  =  Post.all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end <%  @posts.each  do  |post|  %>      <tr>          <td><%=  post.name  %></td>          <td><%=  post.comments.size  %></td>          <td><%=  link_to  'Show',  post  %></td>          <td><%=  link_to  'Edit',  edit_post_path(post)  %></td>          <td><%=  link_to  'Destroy',  post,  confirm:  'Are  you  sure?',  method:  :delete  %></td>      </tr>   <%  end  %> Started  GET  "/posts/"  for  192.168.47.2  at  2015-­‐03-­‐23  18:31:11  +0000   Cannot  render  console  from  192.168.47.2!  Allowed  networks:  127.0.0.1,  ::1,  127.0.0.0/127.255.255.255      ActiveRecord::SchemaMigration  Load  (0.1ms)    SELECT  "schema_migrations".*  FROM  "schema_migrations"   Processing  by  PostsController#index  as  HTML      Post  Load  (0.2ms)    SELECT  "posts".*  FROM  "posts"      Comment  Load  (0.2ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  =  ?    [["post_id",  1]]      Comment  Load  (0.1ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  =  ?    [["post_id",  2]]      Rendered  posts/index.html.erb  within  layouts/application  (25.3ms)   Completed  200  OK  in  679ms  (Views:  666.4ms  |  ActiveRecord:  1.0ms)
  • 97.
    #  app/controllers/posts_controller.rb   def  index      @posts  =  Post.all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end <%  @posts.each  do  |post|  %>      <tr>          <td><%=  post.name  %></td>          <td><%=  post.comments.size  %></td>          <td><%=  link_to  'Show',  post  %></td>          <td><%=  link_to  'Edit',  edit_post_path(post)  %></td>          <td><%=  link_to  'Destroy',  post,  confirm:  'Are  you  sure?',  method:  :delete  %></td>      </tr>   <%  end  %> Started  GET  "/posts/"  for  192.168.47.2  at  2015-­‐03-­‐23  18:31:11  +0000   Cannot  render  console  from  192.168.47.2!  Allowed  networks:  127.0.0.1,  ::1,  127.0.0.0/127.255.255.255      ActiveRecord::SchemaMigration  Load  (0.1ms)    SELECT  "schema_migrations".*  FROM  "schema_migrations"   Processing  by  PostsController#index  as  HTML      Post  Load  (0.2ms)    SELECT  "posts".*  FROM  "posts"      Comment  Load  (0.2ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  =  ?    [["post_id",  1]]      Comment  Load  (0.1ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  =  ?    [["post_id",  2]]      Rendered  posts/index.html.erb  within  layouts/application  (25.3ms)   Completed  200  OK  in  679ms  (Views:  666.4ms  |  ActiveRecord:  1.0ms)
  • 98.
    Started  GET  "/posts/"  for  192.168.47.2  at  2015-­‐03-­‐23  18:37:31  +0000   Cannot  render  console  from  192.168.47.2!  Allowed  networks:  127.0.0.1,  ::1,  127.0.0.0/127.255.255.255      ActiveRecord::SchemaMigration  Load  (0.1ms)    SELECT  "schema_migrations".*  FROM  "schema_migrations"   Processing  by  PostsController#index  as  HTML      Post  Load  (0.2ms)    SELECT  "posts".*  FROM  "posts"      Comment  Load  (0.2ms)    SELECT  "comments".*  FROM  "comments"  WHERE  "comments"."post_id"  IN  (1,  2)      Rendered  posts/index.html.erb  within  layouts/application  (25.8ms)   Completed  200  OK  in  109ms  (Views:  96.4ms  |  ActiveRecord:  0.9ms) #  app/controllers/posts_controller.rb   def  index      @posts  =  Post.includes(:comments).all      respond_to  do  |format|          format.html  #  index.html.erb          format.xml    {  render  :xml  =>  @posts  }      end   end <%  @posts.each  do  |post|  %>      <tr>          <td><%=  post.name  %></td>          <td><%=  post.comments.size  %></td>          <td><%=  link_to  'Show',  post  %></td>          <td><%=  link_to  'Edit',  edit_post_path(post)  %></td>          <td><%=  link_to  'Destroy',  post,  confirm:  'Are  you  sure?',  method:  :delete  %></td>      </tr>   <%  end  %>
  • 99.
  • 104.
  • 106.
  • 107.
  • 108.
  • 109.
  • 110.
  • 111.
  • 112.
  • 113.
  • 114.
    BackendBrowser 1s 200 ms Redis TarefaDemorada (Worker) 3.8 segundos
  • 116.
    class  VerySlowJob  <  ActiveJob::Base      queue_as  :default          def  perform(*args)          #  Tarefa  Demorada      end   end
  • 117.
    class  VerySlowJob  <  ActiveJob::Base      queue_as  :default          def  perform(*args)          #  Tarefa  Demorada      end   end VerySlowJob.perform_later  record
  • 118.
    class  VerySlowJob  <  ActiveJob::Base      queue_as  :default          def  perform(*args)          #  Tarefa  Demorada      end   end VerySlowJob.perform_later  record VerySlowJob.set(wait_until:   Date.tomorrow.noon).perform_later(record)
  • 119.
    class  VerySlowJob  <  ActiveJob::Base      queue_as  :default          def  perform(*args)          #  Tarefa  Demorada      end   end VerySlowJob.set(wait:  1.week).perform_later(record) VerySlowJob.perform_later  record VerySlowJob.set(wait_until:   Date.tomorrow.noon).perform_later(record)
  • 120.
    #  app/workers/report_job.rb   class  ReportJob  <  ActiveJob::Base      queue_as  :default          def  perform(email,  from_date  =  nil,  to_date  =  nil)          now  =  Time.zone.now          from_date  ||=  now  -­‐  1.year          to_date      ||=  now          file_path  =  ModelGigante.generate_excel(from_date,  to_date)          NotifyReportMailer.send(email,  file_path)      end   end
  • 121.
    #  app/controllers/reports_controller.rb   #  ...   def  create      ReportJob.perform_later(params[:email],          params[:from_date],  params[:to_date])      flash[:notice]  =  "Report  is  being  generated.          It  will  be  sent  to  your  email."      redirect_to  reports_path   end   #  ... #  app/workers/report_job.rb   class  ReportJob  <  ActiveJob::Base      queue_as  :default          def  perform(email,  from_date  =  nil,  to_date  =  nil)          now  =  Time.zone.now          from_date  ||=  now  -­‐  1.year          to_date      ||=  now          file_path  =  ModelGigante.generate_excel(from_date,  to_date)          NotifyReportMailer.send(email,  file_path)      end   end
  • 123.
  • 127.
  • 128.
    <!-­‐-­‐  chat.html  -­‐-­‐>   <script  src="//js.pusher.com/2.2/pusher.min.js"></script>   <script>   $(function()  {          var  pusher  =  new  Pusher('YOUR_APP_KEY');          var  channel  =  pusher.subscribe('my-­‐app-­‐chat');          channel.bind('new-­‐message',  function(data)  {                  $('#chat-­‐box').append(data.message);          });   })   </script>
  • 129.
    <!-­‐-­‐  chat.html  -­‐-­‐>   <script  src="//js.pusher.com/2.2/pusher.min.js"></script>   <script>   $(function()  {          var  pusher  =  new  Pusher('YOUR_APP_KEY');          var  channel  =  pusher.subscribe('my-­‐app-­‐chat');          channel.bind('new-­‐message',  function(data)  {                  $('#chat-­‐box').append(data.message);          });   })   </script> #  config/initializer/pusher.rb   Pusher.app_id  =  ENV['PUSHER_APP_ID']   Pusher.key        =  ENV['PUSHER_APP_KEY']   Pusher.secret  =  ENV['PUSHER_APP_SECRET']  
  • 130.
    <!-­‐-­‐  chat.html  -­‐-­‐>   <script  src="//js.pusher.com/2.2/pusher.min.js"></script>   <script>   $(function()  {          var  pusher  =  new  Pusher('YOUR_APP_KEY');          var  channel  =  pusher.subscribe('my-­‐app-­‐chat');          channel.bind('new-­‐message',  function(data)  {                  $('#chat-­‐box').append(data.message);          });   })   </script> #  config/initializer/pusher.rb   Pusher.app_id  =  ENV['PUSHER_APP_ID']   Pusher.key        =  ENV['PUSHER_APP_KEY']   Pusher.secret  =  ENV['PUSHER_APP_SECRET']   #  app/workers/new_message_worker.rb   require  'pusher'   class  NewMessageWorker      include  Sidekiq::Worker            def  perform(message_id)          @message  =  Message.find(message_id)          Pusher.trigger('my-­‐app-­‐chat',  'new-­‐message',  {:message  =>  @message})      end   end
  • 131.
    <!-­‐-­‐  chat.html  -­‐-­‐>   <script  src="//js.pusher.com/2.2/pusher.min.js"></script>   <script>   $(function()  {          var  pusher  =  new  Pusher('YOUR_APP_KEY');          var  channel  =  pusher.subscribe('my-­‐app-­‐chat');          channel.bind('new-­‐message',  function(data)  {                  $('#chat-­‐box').append(data.message);          });   })   </script> #  app/controllers/messages_controller.rb   #  ...   def  create      @message  =  Message.new(params[:message])      if  @messsage.save          NewMessageWorker.perform_async(@message.id)          #  ...   end   #  ... #  config/initializer/pusher.rb   Pusher.app_id  =  ENV['PUSHER_APP_ID']   Pusher.key        =  ENV['PUSHER_APP_KEY']   Pusher.secret  =  ENV['PUSHER_APP_SECRET']   #  app/workers/new_message_worker.rb   require  'pusher'   class  NewMessageWorker      include  Sidekiq::Worker            def  perform(message_id)          @message  =  Message.find(message_id)          Pusher.trigger('my-­‐app-­‐chat',  'new-­‐message',  {:message  =>  @message})      end   end
  • 132.
  • 134.
  • 135.
  • 136.
    • Mark andSweep GC (1.8+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
  • 137.
    • Mark andSweep GC (1.8+) • Bitmap Marking GC (1.9.3+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
  • 138.
    • Mark andSweep GC (1.8+) • Bitmap Marking GC (1.9.3+) • Lazy Sweep GC (2.0.0+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
  • 139.
    • Mark andSweep GC (1.8+) • Bitmap Marking GC (1.9.3+) • Lazy Sweep GC (2.0.0+) • Restricted Generational GC (RGenGC 2.1.0+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
  • 140.
    • Mark andSweep GC (1.8+) • Bitmap Marking GC (1.9.3+) • Lazy Sweep GC (2.0.0+) • Restricted Generational GC (RGenGC 2.1.0+) • Restricted Incremental GC (RIncGC 2.2.0+) http://www.infoq.com/news/2014/12/ruby-2.2.0-released
  • 143.
  • 145.
    #  Gemfile   source  'https://rubygems.org'   ruby  "2.2.1"   #  performance  tuning   gem  'escape_utils'   gem  'fast_blank'   gem  'oj'   gem  'oj_mimic_json' http://marianposaceanu.com/articles/improve-rails-performance-by-adding-a-few-gems
  • 147.
    #  Gemfile   source  'https://rubygems.org'   if  ENV['RAILS_ENV']  ==  'production'      ruby  '1.9.3',  :engine  =>  'jruby',  :engine_version  =>  '1.7.18'   else      ruby  '2.2.1'   end   gem  'rails',  '4.2.0'   gem  'rails-­‐api'   gem  'srt'   gem  'pg',  platforms:  'mri'   gem  'activerecord-­‐jdbcpostgresql-­‐adapter',  platforms:  'jruby'   gem  'sidekiq'   gem  'dalli'   gem  'puma'   gem  'rack-­‐cache'   gem  'rack-­‐cors',  require:  'rack/cors'   gem  'rails_12factor'   gem  'newrelic_rpm'
  • 148.
    #  Gemfile   source  'https://rubygems.org'   if  ENV['RAILS_ENV']  ==  'production'      ruby  '1.9.3',  :engine  =>  'jruby',  :engine_version  =>  '1.7.18'   else      ruby  '2.2.1'   end   gem  'rails',  '4.2.0'   gem  'rails-­‐api'   gem  'srt'   gem  'pg',  platforms:  'mri'   gem  'activerecord-­‐jdbcpostgresql-­‐adapter',  platforms:  'jruby'   gem  'sidekiq'   gem  'dalli'   gem  'puma'   gem  'rack-­‐cache'   gem  'rack-­‐cors',  require:  'rack/cors'   gem  'rails_12factor'   gem  'newrelic_rpm'
  • 149.
    #  Gemfile   source  'https://rubygems.org'   if  ENV['RAILS_ENV']  ==  'production'      ruby  '1.9.3',  :engine  =>  'jruby',  :engine_version  =>  '1.7.18'   else      ruby  '2.2.1'   end   gem  'rails',  '4.2.0'   gem  'rails-­‐api'   gem  'srt'   gem  'pg',  platforms:  'mri'   gem  'activerecord-­‐jdbcpostgresql-­‐adapter',  platforms:  'jruby'   gem  'sidekiq'   gem  'dalli'   gem  'puma'   gem  'rack-­‐cache'   gem  'rack-­‐cors',  require:  'rack/cors'   gem  'rails_12factor'   gem  'newrelic_rpm'
  • 150.
    #  Gemfile   source  'https://rubygems.org'   if  ENV['RAILS_ENV']  ==  'production'      ruby  '1.9.3',  :engine  =>  'jruby',  :engine_version  =>  '1.7.18'   else      ruby  '2.2.1'   end   gem  'rails',  '4.2.0'   gem  'rails-­‐api'   gem  'srt'   gem  'pg',  platforms:  'mri'   gem  'activerecord-­‐jdbcpostgresql-­‐adapter',  platforms:  'jruby'   gem  'sidekiq'   gem  'dalli'   gem  'puma'   gem  'rack-­‐cache'   gem  'rack-­‐cors',  require:  'rack/cors'   gem  'rails_12factor'   gem  'newrelic_rpm'
  • 151.
  • 153.
  • 154.
  • 155.
    Monitoring New Relic CachingMemcache, ETAG Assets CloudFlare, Cloudinary
  • 156.
    Monitoring New Relic CachingMemcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL
  • 157.
    Monitoring New Relic CachingMemcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic
  • 158.
    Monitoring New Relic CachingMemcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis
  • 159.
    Monitoring New Relic CachingMemcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis Async Messages pusher.com
  • 160.
    Monitoring New Relic CachingMemcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis Async Messages pusher.com Auto scale HireFire,AdeptScale
  • 161.
    Monitoring New Relic CachingMemcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis Async Messages pusher.com Auto scale HireFire,AdeptScale Rubies Ruby 2.2.1, JRuby
  • 162.
    Monitoring New Relic CachingMemcache, ETAG Assets CloudFlare, Cloudinary Database PostgreSQL Search Elastic Async Jobs Sidekiq, Redis Async Messages pusher.com Auto scale HireFire,AdeptScale Rubies Ruby 2.2.1, JRuby Deployment Heroku
  • 164.