Eight with Ruby

■イベント
RubyWorld Conference 2018
https://2018.rubyworld-conf.org/

■講演概要
タイトル：Eight with Ruby
登壇者：鈴木 康寛(Sansan株式会社)
https://2018.rubyworld-conf.org/program/

▼Sansan Builders Box
https://buildersbox.corp-sansan.com/

Transcript

1. Eight with Ruby
2. ࣗݾ঺հ ླ໦
   ߁׮
   Sansanגࣜձࣾ
   
   Eightࣄۀ෦
   
   νʔϑΤϯδχΞϦϯάϚωʔδϟʔ
   ೥
   SansanגࣜձࣾʹೖࣾɻEightࣄۀ෦ʹͯओʹRailsΛ༻͍ͨαʔόʔαΠυͷWebΞϓϦέʔγϣϯ։ൃʹैࣄ͢Δɻ
   RedshiftΛ༻͍ͨKPIऔಘͷ࢓૊ΈΛ։ൃ͠ɺσʔλن໛͕֦େ͢ΔݱࡏͰ΋ύϑΥʔϚϯεΛҡ࣋͢Δج൫Λங͍ͨɻ
   ͦͷޙɺ&JHIUͷجຊతͳػೳͰ͋Δͭͳ͕Γॲཧͷվળ΍ϏδωεωοτϫʔΫͷୈҰาͱͳΔϑΟʔυػೳͷϓϩτλΠϓ։ൃɺ
   ߏஙΛߦ͍ɺ೔ܦχϡʔε഑৴ػೳ΍Ϩίϝϯυػೳվྑ౳ͷ։ൃΛઌಋ͠ɺࣗΒ΋࣮૷ʹࢀըͨ͠ɻ
   ݱࡏ͸ΤϯδχΞϦϯά૊৫ͷϚωʔδϝϯτʹैࣄɻ
   
3. Creating a resource from everyday business
 encounters and transforming
 the way the world works. Ϗδωεͷग़ձ͍Λ ɹࢿ࢈ʹม͑ɺ
 ಇ͖ํΛֵ৽͢Δ
4. ੈքΛม͑Δ2ͭͷϓϩμΫτ

5. Eight
 Your Business Network
6. Eightʹ͍ͭͯ - ໊ࢗ؅ཧ
   - ໊ࢗΛࡱΔ͚ͩͰਖ਼֬ʹσʔλԽ
   - ϏδωεωοτϫʔΫ
   - ໊ࢗަ׵͔Β޿͕ΔωοτϫʔΫ
   - اۀͱ΋࿈ܞ
   - Ϗδωείϛϡχέʔγϣϯ
   - ϑΟʔυ
   - ϝοηʔδ
   - ΞϓϦͰ໊ࢗަ׵
7. Eight
   ͱ
   Ruby - ։ൃ౰ॳ͔ΒRailsΛར༻
   - ݱࡏ΋όοΫΤϯυͷେ෦෼ΛRubyͰ։ൃ
   - ٕज़ސ໰ͱͯ͠ͷMatz͞ΜͷόοΫΞοϓ
   ✨
   
8. ࠷ۙͷ։ൃ
9. ϑΟʔυػೳͷΞʔΩςΫνϟ࡮৽ - ैདྷ͸AWS
   DynamoDBΛར༻͍ͯͨ͠ ഑৴ܕ
   - Active
   Record ͕࢖͑ͳ͍ͨΊࣗલͰ
   - ಡΈࠐΈ͸଎͍͕ɺ഑৴ʹ͕͔͔࣌ؒΔ
   - ίʔυ͕ෳࡶԽ͠ɺมߋରԠ͕ࠔ೉ʹ
10. ϑΟʔυػೳͷΞʔΩςΫνϟ࡮৽ - Amazon Aurora + Redis - Active Record, Rails.cache
    ͱͷ૬ੑ͕͍͍
    - ΩϟογϡʹΑΔಡΈࠐΈߴ଎Խ
    - Rails wayͰίʔυΛγϯϓϧʹ
11. ϑΟʔυػೳͷΞʔΩςΫνϟ࡮৽ class User < ApplicationRecord def fetch_feed cache_keys = redis.zrevrange(cache_key, 0, -1).map { |id| Post.cache_key_for(id: id) } return fetch_read_feed unless cache_keys.any? # Fall back to slow feed if there is no cache Rails.cache.fetch_multi(*cache_keys, expires: 1.minute, race_condition_ttl: 5.seconds) do |key| id = Post.id_from_cache_key(key: key) Post.find_by(id: id) end.values end def fetch_read_feed Post.eager_load(:user) .where(user: self.following + [self]) .order('posts.created_at DESC') end end
12. ίϛϡχςΟͱͷؔΘΓ
13. ίϛϡχςΟͱͷؔΘΓ Tokyo Rubyist Meetup
14. ίϛϡχςΟͱͷؔΘΓ Omotesando.rb
16. We’re Hiring Rubyist!