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
Ruby loves Postgres
Search
Yannick Schutz
June 24, 2014
Programming
1
150
Ruby loves Postgres
Rulu 2014 talk
Yannick Schutz
June 24, 2014
Tweet
Share
More Decks by Yannick Schutz
See All by Yannick Schutz
All those bots are gonna steal your job
ys
1
1.1k
Postgresql + Ruby = :heart:
ys
4
320
RubyMotion - Apéro Ruby Paris 05-10-2012
ys
1
3k
Other Decks in Programming
See All in Programming
Kiroで始めるAI-DLC
kaonash
2
620
Updates on MLS on Ruby (and maybe more)
sylph01
1
180
🔨 小さなビルドシステムを作る
momeemt
4
690
ProxyによるWindow間RPC機構の構築
syumai
3
1.2k
個人軟體時代
ethanhuang13
0
330
The Past, Present, and Future of Enterprise Java
ivargrimstad
0
410
複雑なドメインに挑む.pdf
yukisakai1225
5
1.2k
Navigation 2 を 3 に移行する(予定)ためにやったこと
yokomii
0
340
テストカバレッジ100%を10年続けて得られた学びと品質
mottyzzz
2
610
The Past, Present, and Future of Enterprise Java with ASF in the Middle
ivargrimstad
0
170
CloudflareのChat Agent Starter Kitで簡単!AIチャットボット構築
syumai
2
510
ぬるぬる動かせ! Riveでアニメーション実装🐾
kno3a87
1
230
Featured
See All Featured
Templates, Plugins, & Blocks: Oh My! Creating the theme that thinks of everything
marktimemedia
31
2.5k
Large-scale JavaScript Application Architecture
addyosmani
513
110k
Design and Strategy: How to Deal with People Who Don’t "Get" Design
morganepeng
131
19k
Designing for Performance
lara
610
69k
Git: the NoSQL Database
bkeepers
PRO
431
66k
Speed Design
sergeychernyshev
32
1.1k
Mobile First: as difficult as doing things right
swwweet
224
9.9k
Why Our Code Smells
bkeepers
PRO
339
57k
Intergalactic Javascript Robots from Outer Space
tanoku
272
27k
Why You Should Never Use an ORM
jnunemaker
PRO
59
9.5k
Connecting the Dots Between Site Speed, User Experience & Your Business [WebExpo 2025]
tammyeverts
8
530
CoffeeScript is Beautiful & I Never Want to Write Plain JavaScript Again
sstephenson
162
15k
Transcript
Hello, I’m Yannick
None
None
None
RUBY ❤️ POSTGRESQL RUBY ❤️ POSTGRESQL
PostgreSQL is more than a datastore
PostgreSQL is a relational database
PostgreSQL is webscale
PostgreSQL is webscale
PostgreSQL is open-source
PostgreSQL has a great community
PostgreSQL is mature!
! ! ! PostgreSQL will do your coffee
⚡️POWER⚡️
• MODELS • QUERIES • SPEED What?
MODELS
have not integer primary keys. YOU CAN
UUID
run 'CREATE EXTENSION “uuid-ossp"' ! create_table(:users), id: :uuid do t.string
:name end ! User.create #=> #<User @values={:id=>”10e43f5f-713f-4efa- b225-11800777a322"}>
add “columns” without migrations. YOU CAN
HSTORE
add_column :users, :settings, :hstore ! class User < ActiveRecord::Base #
This exposes accessors. user.wants_push = false store_accessor :settings, :wants_push, :wants_mails, :auto_save store_accessor :avatars, :large, :medium, :small end
cache API results. YOU CAN
JSON
! add_column(:twitter_auth, :json_payload, :json) ! user.twitter_auth = Omniauth.fetch_auth(:twitter) ! user.twitter_auth[:nickname]
= ‘yann_ck’ user.twitter_auth[:nickname] #=> ‘yann_ck’
• UUID • HSTORE • JSON Recap
! ! QUERIES
have understandable hard queries. YOU CAN
AKA WITH clause CTE
def bad_users_with_karma User.find_by_sql(query, @karma_limit) end ! def query <<-SQL WITH
bad_users AS (SELECT * FROM users WHERE bad = true) SELECT * FROM bad_users WHERE karma > ? SQL end
have slow queries to fast read only models. YOU CAN
VIEWS MATERIALIZED
PSQL> CREATE MATERIALIZED VIEW bad_users AS SELECT * FROM users
WHERE bad = false; ! class BadUser < User def readonly? true end end
search your models. YOU CAN
SEARCH FULL TEXT
# Using textacular ! User.basic_search(“yannick”) User.basic_search(name: “yan:*”) User.fuzzy_search(“yannick”) # uses
trigrams ! create index on users using gin(to_tsvector('english', name));
• CTE • Materialized Views • Full text search Recap
! ! SPEED
index more than one column. YOU CAN
INDEXES MULTICOLUMN
SELECT * FROM posts WHERE !banned AND poster_id = 6;
! SELECT * FROM posts WHERE banned; ! CREATE INDEX ON posts(banned, poster_id);
index only a part of your rows. YOU CAN
INDEXES PARTIAL
SELECT * FROM posts WHERE !banned AND poster_id = 6;
! CREATE INDEX ON poster_id WHERE !banned;
have transformations in you indexes. YOU CAN
INDEXES FUNCTIONAL
SELECT * FROM users WHERE lower(email) = ‘
[email protected]
’; ! CREATE
INDEX ON users(lower(email));
• Partial • Multicolumn • Functional Recap
! TOOLS MOAR
CONTENT SHARE
PUT IMAGE OF DATACLIPS AND WILL
STATS GET QUERIES
SELECT (total_time / 1000 / 60) as total_minutes, (total_time/calls) as
average_time, query FROM pg_stat_statements ORDER BY 1 DESC LIMIT 100; Stolen from craigkerstiens.com
PUT IMAGE OF EXPENSIVE QUERIES AND TIM
USAGE UNDERSTAND
None
• Dataclips • Queries Stats • Global usage Recap
PostgreSQL is made of unicorns and rainbows!
PostgreSQL is made of unicorns and rainbows!
Thanks!
Questions?