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
310
RubyMotion - Apéro Ruby Paris 05-10-2012
ys
1
3k
Other Decks in Programming
See All in Programming
競技プログラミングへのお誘い@阪大BOOSTセミナー
kotamanegi
0
360
アクターシステムに頼らずEvent Sourcingする方法について
j5ik2o
4
370
menu基盤チームによるGoogle Cloudの活用事例~Application Integration, Cloud Tasks編~
yoshifumi_ishikura
0
110
선언형 UI에서의 상태관리
l2hyunwoo
0
200
各クラウドサービスにおける.NETの対応と見解
ymd65536
0
190
Semantic Kernelのネイティブプラグインで知識拡張をしてみる
tomokusaba
0
180
Effective Signals in Angular 19+: Rules and Helpers
manfredsteyer
PRO
0
130
Beyond ORM
77web
9
1.2k
これが俺の”自分戦略” プロセスを楽しんでいこう! - Developers CAREER Boost 2024
niftycorp
PRO
0
200
フロントエンドのディレクトリ構成どうしてる? Feature-Sliced Design 導入体験談
osakatechlab
8
4.2k
ドメインイベント増えすぎ問題
h0r15h0
2
440
「Chatwork」Android版アプリを 支える単体テストの現在
okuzawats
0
180
Featured
See All Featured
Creating an realtime collaboration tool: Agile Flush - .NET Oxford
marcduiker
26
1.9k
GraphQLとの向き合い方2022年版
quramy
44
13k
A designer walks into a library…
pauljervisheath
205
24k
Bootstrapping a Software Product
garrettdimon
PRO
305
110k
Building an army of robots
kneath
302
44k
Music & Morning Musume
bryan
46
6.2k
JavaScript: Past, Present, and Future - NDC Porto 2020
reverentgeek
47
5.1k
Designing for Performance
lara
604
68k
A Modern Web Designer's Workflow
chriscoyier
693
190k
Bash Introduction
62gerente
609
210k
Thoughts on Productivity
jonyablonski
68
4.4k
Into the Great Unknown - MozCon
thekraken
34
1.5k
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?