QConSP 2015 - Dicas de Performance para Aplicações Web

DICAS DE PERFORMANCE
WEB
Fabio Akita @AkitaOnRails

Back EndBrowser
Front End
Render
External
Services

1.4 MILHOES DEVISITANTES
UNICOS!!

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
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
as
XML

Completed
304
Not
Modified
in
6.2ms
(ActiveRecord:
1.7ms)

Image
Magick
BackendBrowser
1s

S3
Image
Magick
BackendBrowser
1s

S3
Image
Magick
BackendBrowser
1s 2 segundos

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'
#

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'
#

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

=
‘user[photos]’,

@user,
:photos

=
user_form.submit("Save")

#
Gemfile

gem
'cloudinary'

gem
'attachinary'
#

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
#

=
form_for(@user)
do
|user_form|

=

=
‘user[avatar]',

@user,
:avatar

=
‘user[photos]’,

@user,
:photos

=
#
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'
#

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
#

=
form_for(@user)
do
|user_form|

=

=
‘user[avatar]',

@user,
:avatar

=
‘user[photos]’,

@user,
:photos

=
#
app/controllers/users_controller.rb

...

def
create

@user
=
User.new(params[:user])

@user.save!

end

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://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"
/>

#
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

#

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
%>

#

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',
%></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
=
?

[["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
IN
(1,
2)

Rendered
posts/index.html.erb
within
layouts/application
(25.8ms)

Completed
200
OK
in
109ms
(Views:
96.4ms
|
ActiveRecord:
0.9ms)
#

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',
%></td>

<td><%=
link_to
'Destroy',
post,
confirm:
'Are
you
sure?',
method:
:delete
%></td>

</tr>

<%
end
%>

Tarefa DemoradaBackendBrowser
1s

Tarefa DemoradaBackendBrowser
1s 4 segundos

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
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)
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

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

<script>

$(function()
{

var
pusher
=
new

var
channel
=

function(data)
{


});

})

</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

<script>

$(function()
{

var
pusher
=
new

var
channel
=

function(data)
{


});

})

</script>
#

Pusher.app_id
=

Pusher.key

=

Pusher.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

<script>

$(function()
{

var
pusher
=
new

var
channel
=

function(data)
{


});

})

</script>
#
app/controllers/messages_controller.rb

#
...

def
create

@message
=
Message.new(params[:message])

if
@messsage.save

NewMessageWorker.perform_async(@message.id)

#
...

end

#
...
#

Pusher.app_id
=

Pusher.key

=

Pusher.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

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 Generational GC (RGenGC 2.1.0+)
• Restricted Incremental GC (RIncGC 2.2.0+)

#
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'

Monitoring New Relic
Caching Memcache, ETAG

Assets CloudFlare, Cloudinary

Database PostgreSQL

Database PostgreSQL
Search Elastic

Database PostgreSQL
Search Elastic
Async Jobs Sidekiq, Redis

Database PostgreSQL
Search Elastic
Async Messages pusher.com

Database PostgreSQL
Search Elastic
Auto scale HireFire,AdeptScale

Database PostgreSQL
Search Elastic
Rubies Ruby 2.2.1, JRuby

Database PostgreSQL
Search Elastic
Rubies Ruby 2.2.1, JRuby
Deployment Heroku

OBRIGADO
slideshare.net/akitaonrails

QConSP 2015 - Dicas de Performance para Aplicações Web

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