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
ぬるぬる動かせ! Riveでアニメーション実装🐾
kno3a87
1
210
print("Hello, World")
eddie
2
530
さようなら Date。 ようこそTemporal! 3年間先行利用して得られた知見の共有
8beeeaaat
3
1.4k
CJK and Unicode From a PHP Committer
youkidearitai
PRO
0
110
Zendeskのチケットを Amazon Bedrockで 解析した
ryokosuge
3
300
パッケージ設計の黒魔術/Kyoto.go#63
lufia
3
430
Deep Dive into Kotlin Flow
jmatsu
1
330
今から始めるClaude Code入門〜AIコーディングエージェントの歴史と導入〜
nokomoro3
0
130
Navigating Dependency Injection with Metro
zacsweers
3
260
Updates on MLS on Ruby (and maybe more)
sylph01
1
180
Navigation 2 を 3 に移行する(予定)ためにやったこと
yokomii
0
140
Testing Trophyは叫ばない
toms74209200
0
860
Featured
See All Featured
Git: the NoSQL Database
bkeepers
PRO
431
66k
Evolution of real-time – Irina Nazarova, EuRuKo, 2024
irinanazarova
8
920
How STYLIGHT went responsive
nonsquared
100
5.8k
Making the Leap to Tech Lead
cromwellryan
135
9.5k
Building Applications with DynamoDB
mza
96
6.6k
Context Engineering - Making Every Token Count
addyosmani
2
40
Measuring & Analyzing Core Web Vitals
bluesmoon
9
580
Helping Users Find Their Own Way: Creating Modern Search Experiences
danielanewman
29
2.9k
Learning to Love Humans: Emotional Interface Design
aarron
273
40k
The World Runs on Bad Software
bkeepers
PRO
70
11k
Understanding Cognitive Biases in Performance Measurement
bluesmoon
29
1.9k
Bootstrapping a Software Product
garrettdimon
PRO
307
110k
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?