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
Sidekiq
Search
Tymon Tobolski
July 01, 2015
Programming
1
140
Sidekiq
Tymon Tobolski
July 01, 2015
Tweet
Share
More Decks by Tymon Tobolski
See All by Tymon Tobolski
Only possible with Elixir - ubots Case Study
teamon
0
200
Fun with Elixir Macros
teamon
1
410
Elixir GenStage & Flow
teamon
2
900
Elixir - Bydgoszcz Web Development Meetup
teamon
2
670
Git - Monterail style
teamon
1
140
Rails Assets wroc_love.rb
teamon
1
670
Angular replacements for jQuery-based libraries
teamon
1
290
Angular replacements for jQuery-based libraries
teamon
2
290
Rails Assets LRUG
teamon
0
7.3k
Other Decks in Programming
See All in Programming
ROS 2のZenoh対応とZenohのROS 2対応
takasehideki
2
250
[KR] Server Driven Compose With Firebase
skydoves
1
120
CSC509 Lecture 03
javiergs
PRO
0
130
ビット演算の話 / Let's play with bit operations
kaityo256
PRO
4
160
フロントエンドの現在地とこれから
koba04
6
3.6k
Modern Functional Fluent CFML REST by Luis Majano
ortus24
0
120
ポケモンで考えるコミュニケーション / Communication Lessons from Pokémon
mackey0225
4
140
CSC305 Lecture 01
javiergs
PRO
1
140
実践Dash - 手を抜きながら本気で作るデータApplicationの基本と応用 / Dash for Python and Baseball
shinyorke
2
220
Rails 8 Frontend: 10 commandments & 7 deadly sins in 2025
yshmarov
1
590
自分だけの世界を創るクリエイティブコーディング / Creative Coding: Creating Your Own World
chobishiba
2
230
グローバルなソフトウェアテスト組織における課題と戦略 / Challenges and Strategies in a Global Software Testing Organization #mf_techday
imtnd
0
230
Featured
See All Featured
XXLCSS - How to scale CSS and keep your sanity
sugarenia
246
1.3M
Building a Scalable Design System with Sketch
lauravandoore
459
32k
The Pragmatic Product Professional
lauravandoore
31
6.2k
10 Git Anti Patterns You Should be Aware of
lemiorhan
653
59k
A Modern Web Designer's Workflow
chriscoyier
692
190k
How to name files
jennybc
77
98k
Imperfection Machines: The Place of Print at Facebook
scottboms
263
13k
The Art of Delivering Value - GDevCon NA Keynote
reverentgeek
4
99
Building an army of robots
kneath
302
42k
Raft: Consensus for Rubyists
vanstee
136
6.6k
Optimising Largest Contentful Paint
csswizardry
31
2.8k
The Art of Programming - Codeland 2020
erikaheidi
50
13k
Transcript
SIDEKIQ BACKGROUND JOBS IN RUBY © Tymon Tobolski, 2015
WHAT & WHY © Tymon Tobolski, 2015
class CommentsController < ApplicationController def create @comment = @post.comments.create!(comment_params) Notifications.notify_commenters(@comment)
head :ok end end © Tymon Tobolski, 2015
class Notifications def self.notify_commenters(comment) comment.post.comments_authors.each do |user| send_email_about_new_comment(user, comment) end
end end © Tymon Tobolski, 2015
SYNCHRONOUS DELIVERY class CommentsController < ApplicationController def create @comment =
@post.comments.create!(comment_params) # T = 10ms Notifications.notify_commenters(@comment) # T = 100.000ms, boom, timeout! head :ok end end class Notifications def self.notify_commenters(comment) comment.post.comments_authors.each do |user| send_email_about_new_comment(user, comment) # T += 1000ms end end end © Tymon Tobolski, 2015
ASYNCHRONOUS DELIVERY class CommentsController < ApplicationController def create @comment =
@post.comments.create!(comment_params) # T = 10ms NotifyCommentersWorker.perform_async(@comment.id) # T = 11ms, \o/ head :ok end end class Notifications def self.notify_commenters(comment) comment.post.comments_authors.each do |user| send_email_about_new_comment(user, comment) # T += 1000ms still, but we don't care anymore end end end © Tymon Tobolski, 2015
SIDEKIQ WORKER # app/workers/notify_commenters_worker.rb class NotifyCommentersWorker include Sidekiq::Worker def perform(comment_id)
comment = Comment.find(comment_id) Notifications.notify_commenters(comment) end end © Tymon Tobolski, 2015
MAGIC? © Tymon Tobolski, 2015
REDIS © Tymon Tobolski, 2015
REDIS.IO Redis is an open source, BSD licensed, advanced key-value
cache and store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets, sorted sets, bitmaps and hyperloglogs, blah blah blah ... © Tymon Tobolski, 2015
REDIS.IO Redis is an open source, BSD licensed, advanced key-value
cache and store. It is often referred to as a data structure server since keys can contain strings, hashes, lists, sets, sorted sets, bitmaps and hyperloglogs, blah blah blah ... © Tymon Tobolski, 2015
LIST IN REDIS WORLD ... is really a list and
an array and a stack and a queue © Tymon Tobolski, 2015
QUEUE FIFO - FIRST IN, FIRST OUT ACTION QUEUE STATUS
--------------------------- [] PUSH 1 [1] PUSH 2 [2,1] PUSH 3 [3,2,1] POP [3,2] PUSH 4 [4,3,2] POP [4,3] POP [4] © Tymon Tobolski, 2015
QUEUE FIFO - FIRST IN, FIRST OUT ACTION mylist CONTENT
-------------------------------- (nil) LPUSH mylist 1 [1] LPUSH mylist 2 [2,1] LPUSH mylist 3 [3,2,1] RPOP mylist [3,2] LPUSH mylist 4 [4,3,2] RPOP mylist [4,3] RPOP mylist [4] © Tymon Tobolski, 2015
FLOW © Tymon Tobolski, 2015
RULES Sidekiq Best Practices © Tymon Tobolski, 2015
ALWAYS USE IDS BAD: NotifyCommentersWorker.perform_async(@comment) GOOD: NotifyCommentersWorker.perform_async(@comment.id) Job arguments MUST
be serializable to JSON def perform(comment_id) comment = Comment.find(comment_id) # ... end © Tymon Tobolski, 2015
IDEMPOTENT AND TRANSACTIONAL JOBS Sidekiq will execute your job at
least once. def perform(...) # ... User.where(id: id1).update_all(["balance = balance + ?", amount]) User.where(id: id2).update_all(["balance = balance - ?", amount]) # ... end © Tymon Tobolski, 2015
IDEMPOTENT AND TRANSACTIONAL JOBS Sidekiq will execute your job at
least once. def perform(...) # ... ActiveRecord.transation do User.where(id: id1).update_all(["balance = balance + ?", amount]) User.where(id: id2).update_all(["balance = balance - ?", amount]) end # ... end © Tymon Tobolski, 2015
CONCURRENCY & PARALLELISM def process(...) User.find_each do |user| send_email_to(user) end
end © Tymon Tobolski, 2015
CONCURRENCY & PARALLELISM def process(...) User.select(:id).find_each do |user| SendEmailWorker.perform_async(user.id) end
end © Tymon Tobolski, 2015
FOREMAN / HEROKU # Procfile web: bin/rails server -p $PORT
worker: bin/sidekiq © Tymon Tobolski, 2015
SIDEKIQ WEB © Tymon Tobolski, 2015
SIDEKIQ WEB # Gemfile gem 'sinatra', :require => nil #
config/routes.rb require 'sidekiq/web' authenticate :user, lambda { |u| u.admin? } do mount Sidekiq::Web => '/sidekiq' end © Tymon Tobolski, 2015
QUESTIONS? © Tymon Tobolski, 2015