Upgrade to Pro
— share decks privately, control downloads, hide ads and more …
Speaker Deck
Features
Speaker Deck
PRO
Sign in
Sign up for free
Search
Search
Estratégias para tunar sua aplicação rails
Search
Cirdes
November 29, 2014
Programming
1
66
Estratégias para tunar sua aplicação rails
Palestra na RuPy 2014
Cirdes
November 29, 2014
Tweet
Share
More Decks by Cirdes
See All by Cirdes
Testando aplicações Rails com Playwright
cirdes
0
60
Ferramentas para CTO`s
cirdes
0
57
Aumentando O Poder Do Seu HTML Com AngularJS
cirdes
0
84
Getting Started with Angular.JS
cirdes
2
460
Como desenvolver um produto escalável com uma linguagem: Nova, lente e insegura
cirdes
0
160
Boas práticas usando RSpec
cirdes
0
290
Como construir uma Aplicação que consuma e produza updates no Twitter usando Python.
cirdes
0
37
Other Decks in Programming
See All in Programming
dbt Pythonモデルで実現するSnowflake活用術
trsnium
0
170
DROBEの生成AI活用事例 with AWS
ippey
0
130
Immutable ActiveRecord
megane42
0
140
Multi Step Form, Decentralized Autonomous Organization
pumpkiinbell
1
750
Amazon ECS とマイクロサービスから考えるシステム構成
hiyanger
2
570
一休.com のログイン体験を支える技術 〜Web Components x Vue.js 活用事例と最適化について〜
atsumim
0
530
Introduction to kotlinx.rpc
arawn
0
700
Linux && Docker 研修/Linux && Docker training
forrep
24
4.5k
ファインディLT_ポケモン対戦の定量的分析
fufufukakaka
0
740
社内フレームワークとその依存性解決 / in-house framework and its dependency management
vvakame
1
560
Lottieアニメーションをカスタマイズしてみた
tahia910
0
130
『GO』アプリ データ基盤のログ収集システムコスト削減
mot_techtalk
0
130
Featured
See All Featured
Optimizing for Happiness
mojombo
376
70k
It's Worth the Effort
3n
184
28k
実際に使うSQLの書き方 徹底解説 / pgcon21j-tutorial
soudai
175
51k
The Invisible Side of Design
smashingmag
299
50k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
Code Review Best Practice
trishagee
67
18k
Adopting Sorbet at Scale
ufuk
74
9.2k
Art, The Web, and Tiny UX
lynnandtonic
298
20k
Intergalactic Javascript Robots from Outer Space
tanoku
270
27k
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
40
2k
Making the Leap to Tech Lead
cromwellryan
133
9.1k
A Tale of Four Properties
chriscoyier
158
23k
Transcript
ESTRATÉGIASDE CACHE PARA TUNAR SUA APLICAÇÃO RAILS
CIRDES HENRIQUE ENGENHEIRO DA COMPUTAÇÃO - UFPE ORGANIZADOR DO ABRIL
PRO RUBY C0-FUNDADOR E DEV DO EVENTICK
None
335 MIL TICKETS EMITIDOS 3600 ORGANIZADORES 1200 EVENTOS FUTUROS
RECIFE
RECIFE
O EVENTICK FICOU FORA DO AR POR 30 MINUTOS
ANTES DA SOLUÇÃO, UM PASSO ATRÁS: MONITORAR A APLICAÇÃO
NewRelic Nazar.io HoneyBadger Logentries Inspectlet The Informant
SOA?
SINGLE RAILS APP LIKE SHOPIFY
70% DAS REQUISIÇÕES BATEM NA CACHE
O QUE É CACHE?
Cache é um componente que guarda informações de forma TRANSPARENTE
para que futuras requisições sejam mais RÁPIDAS
QUAL A CARACTERÍSTICA DA CACHE?
O QUE USA CACHE?
DO QUE É CONSTITUÍDA UMA CACHE?
CACHE = CASH
ARQUITETURA DE MEMÓRIA
CACHE HIT / CACHE MISS / CACHE RATIO
COMO MAXIMIZAR O CACHE HIT?
BÉLÁDY’S ALGORITHM
RANDOM REPLACEMENT (RR)
LEAST-FREQUENTLY USED (LFU)
LEAST-RECENTLY USED (LRU)
O QUE É WEBCACHING?
REQUISIÇÃO Rails App Reverse Proxy CDN Proxy Browser
CACHE SERVER-SIDE CACHE CLIENT-SIDE
PAGE CACHE ACTION CACHE FRAGMENT CACHE RAILS CACHE
WRITE ON DISK BYPASS RAILS APPLICATION ENTIRE STATELESS PAGES NÃO
FUNCIONA NO HEROKU PAGE CACHE
PAGE CACHE class WeblogController < ActionController::Base caches_page :show, :new def
update expire_page action: 'show', id: params[:list][:id] end end
SIMILAR TO PAGE CACHE RUN FILTERS ACTION CACHE
ACTION CACHE class PostsController < ActionController::Base caches_action :show, expires_in: 1.hour
end
DEPRECATED
HTML CACHE AVAILABLE IN RAILS 4 FRAGMENT CACHE
RAILS CACHE FRAGMENT AND ACTION CACHE BUILD ON RAILS.CACHE CONFIG.ACTION_CONTROLLER.PERFORM_CACHING
= TRUE
ActiveSupport::Cache::Store FileStore MemoryStore NullStore MemCacheStore
HOW TO USE IT Rails.cache.write 'foo', 'bar' Rails.cache.fetch 'foo' Rails.cache.write
:foo, {a: 'b'}
FRAGMENT CACHING Rais.cache.fetch 'key', expires_in: 5.minutes, race_condition_ttl: 10.seconds do #code
end
FRAGMENT CACHING <% cache "event-#{event.id}" do %> <%= render event
%> <% end %>
FRAGMENT CACHING <% cache “event-#{event.id}”, expires_in: 1.year do %> <%=
render event %> <% end %>
FRAGMENT CACHING def update expire_fragment("event-#{event.id}") end
FRAGMENT CACHING <% cache [:recent, event] do %> <%= render
event %> <% end %>
FRAGMENT CACHING ACTIVESUPPORT::CACHE.EXPAND_CACHE_KEY [:RECENT, EVENT] => "RECENT/EVENTS/12510-20141128131506743910000"
FRAGMENT CACHING <% cache :recent_attendees, expires_in: 5.minutes do %> <%=
render partial: 'recent', collection: Attendees.recent %> <% end %>
FRAGMENT CACHING <% cache(cache_key_for_attendees) do %> <%= render partial: 'recent',
collection: Attendees.recent %> <% end %>
FRAGMENT CACHING module AttendeesHelper def cache_key_for_attendees count = Attendee.count max_updated_at
= Attendee.maximum(:updated_at).try(:utc).try(:to_s, :number) "attendees/all-#{count}-#{max_updated_at}" end end
FRAGMENT CACHING <% cache(cache_key_for_attendees) do %> <%= render partial: 'recent',
collection: Attendees.recent %> <% end %>
PROBLEMA COM TEMPLATE
CACHE Digests <!-- app/views/events/show.html.erb --> <% cache ["v1", @event] do%>
<h1>Team: <%= @event.title %></h1> <%= render @event.attendees %> <% end %> <!-- app/views/attendees/_attendee.html.erb --> <% cache ["v1", attendee] do %> <span><%= attendee.name %></span> <span><%= attendee.email %></span> <% end %>
CACHE Digests
CACHE Digests
RUSSIAN DOLL
Russian Doll
Russian Doll <% cache(cache_key_for_attendees) do %> All available attendees: <%
Attendee.all.each do |a| %> <% cache(a) do %> <p><%= a.name %></p> <% end %> <% end %> <% end %>
KNOWING IS NOT ENOUGH WE MUST APPLY
WILLING IS NOT ENOUGH WE MUST DO