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
UUIDは衝突の夢を見るか
Search
Dorian
April 26, 2017
Programming
1
1.2k
UUIDは衝突の夢を見るか
Dorian
April 26, 2017
Tweet
Share
More Decks by Dorian
See All by Dorian
VMとAWS ECSがメインのインフラにKubernetesを導入した効能
doridoridoriand
1
3.5k
オープンSNSフレームワークについて
doridoridoriand
0
1.1k
Other Decks in Programming
See All in Programming
なぜあなたのオブザーバビリティ導入は頓挫するのか
ryota_hnk
3
510
Claude Code で Astro blog を Pages から Workers へ移行してみた
codehex
0
160
20250708_JAWS_opscdk
takuyay0ne
2
150
新しいモバイルアプリ勉強会(仮)について
uetyo
1
190
オンコール⼊⾨〜ページャーが鳴る前に、あなたが備えられること〜 / Before The Pager Rings
yktakaha4
2
1.1k
それ CLI フレームワークがなくてもできるよ / Building CLI Tools Without Frameworks
orgachem
PRO
11
2.9k
11年かかって やっとVibe Codingに 時代が追いつきましたね
yimajo
0
190
QA x AIエコシステム段階構築作戦
osu
0
210
GPUを計算資源として使おう!
primenumber
1
290
Git Sync を超える!OSS で実現する CDK Pull 型デプロイ / Deploying CDK with PipeCD in Pull-style
tkikuc
4
470
コーディングエージェント概観(2025/07)
itsuki_t88
0
440
抽象化という思考のツール - 理解と活用 - / Abstraction-as-a-Tool-for-Thinking
shin1x1
1
860
Featured
See All Featured
XXLCSS - How to scale CSS and keep your sanity
sugarenia
248
1.3M
Sharpening the Axe: The Primacy of Toolmaking
bcantrill
44
2.4k
The Invisible Side of Design
smashingmag
301
51k
RailsConf & Balkan Ruby 2019: The Past, Present, and Future of Rails at GitHub
eileencodes
138
34k
Being A Developer After 40
akosma
90
590k
What's in a price? How to price your products and services
michaelherold
246
12k
Optimizing for Happiness
mojombo
379
70k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
4 Signs Your Business is Dying
shpigford
184
22k
Performance Is Good for Brains [We Love Speed 2024]
tammyeverts
10
1k
Art, The Web, and Tiny UX
lynnandtonic
301
21k
Why Our Code Smells
bkeepers
PRO
337
57k
Transcript
66*% িಥͷເΛݟΔ͔ 4LJMM8FEOFTEBZ
͓·͑ͩΕ w ͍ͩ͠ w --ͱ͔Α͘ॻ͘Α w ࠷͍ۙΜ;ΒΛ͔͍ͬͯ͡·͢ w ͓ञΛࢁҿΊΔਓΛਅʹ୳͍ͯ͠·͢
66*% w ϢχʔΫͳจࣈྻΛಘΔ࣌ྑ͍ͬͯ͘Δͱࢥ͍ ·͢ ҎԼྫ GEEDBCBEDE w ͲΜͳʹੜͯ͠িಥ͠ͳ͍ͱ͔ɻɻ w
ͰຊͳΜͰ͔͢Ͷ
ͦͦ66*%ͱ w ࢄγεςϜ্Ͱͱ౷ແ͠ʹ࡞Ͱ͖Δࣝผࢠͱ ͯ͠ઃܭ͞Εͨ w όʔδϣϯେผͯͭ͠ଘࡏ w ༷3'$ͱͯ͠ެ։͞Ε͍ͯΔ IUUQTUPPMTJFUGPSHQEGSGDQEG
w ࠷ॳͷࣈͷ෦͕όʔδϣϯΛද͍ͯ͠Δ w ࠷ޙͷจࣈͷ෦όϦΞϯτͱݺΕΔ มछͷछྨΛද͍ͯ͠Δ w όʔδϣϯ/*$ͷ."$ΞυϨεΛ༻ͨ͠Γ w όʔδϣϯόʔδϣϯͷҰ෦Λ104*9ͷ6*%(*%Ͱஔ͖ ͑ͨͷ
w όʔδϣϯͱ.%4)"Ͱੜͨ͠ϋογϡΛ༻͍ͯ ͍Δͷͱͳ͍ͬͯΔ GEEDBCBEDE
GEEDBCBEDE w զʑ͕ීஈ༻͍͍ͯΔ66*%όʔδϣϯ w ͦΕʹՃ͑ͯόϦΞϯτͱݺΕΔจࣈྻ͕ՃΘΔ " # ͷ͍ͣΕ͔ʹͳΔ
w શͯཚʹΑΔੜ
GEEDBCBEDE w ্ه66*%ਐͰܻCJU ਐ w ͔͜͜Βόʔδϣϯ ͱόϦΞϯτ
ΛҾ ͘ͱɺCJUͷࣗ༝͕͋Δ w ?º?௨Γ͘͢͝ଟ͍
ຊʹিಥ͠ͳ͍ͷʁ w ҙ֎ͱඦສͱ͔ग़ྗ͢ Δͱ͙͢িಥ͢ΔͷͰʁ w ͍͘Β EFWVSBOEPNͱ͔छʹ ͬͯͯͶ͑ɻɻ
·͋ͬͯΈͬ w 66*%Λͻͨ͢Βੜͯ͠%#ʹ*/4&35 w ͕࣌ؒڐ͢ݶΓͣͬͱ
require 'securerandom' require 'mysql2' client = Mysql2::Client.new(:host => 'localhost', :username
=> 'root', :password => 'password', :database => 'uuid' ) while true do begin uuid = SecureRandom.uuid client.query("insert into uuid.ruby (`uuid`) values ('#{uuid}')") puts uuid rescue => e p e end end
ॏෳνΣοΫ w ੜ͞Εͨ66*%શ݅Λ͖࣋ͬͯͯɺ ཁૉΧϯτ w VOJRϝιουΛར༻ͯ͠ॏෳഉআ ཁૉΧϯτ w ཁૉʹҧ͍͕͋Εॏෳ͍ͯ͠Δͣ ͘͢͝ಥ؏ͳॏෳνΣοΫ
ॏෳνΣοΫ ͘͢͝ಥ؏ͳॏෳνΣοΫ puts 'িಥͨ͠Ͱ' if data.count != data.uniq.count
ॏෳνΣοΫ దʹ#PUʹͭͿ͔ͤͯ֬ೝͱ͔ͯ͠·ͨ͠
ൃੜ w ༻ҙ͍ͯͨ͠%#ͷ༰ྔΛ͑Δ w ૉʹσΟεΫ͕େ͖͍%#Λ࡞Ҡߦ
ൃੜ w ԯ͑ͨ͋ͨΓ͔ΒॏෳνΣοΫͰ͖ͳ͘ͳΔ ͓͍ 1$ͷϝϞϦʹΒͳ͍ w ஞ࣍%#͔ΒಡΈऔͬͯಉҰͷ66*%͕͋Δ͔%#ʹ ͍߹Θͤ͢Δํࣜʹมߋ
ൃੜ w ,74ʹ͢ΕΑ͔ͬͨײ w ฒྻॲཧग़དྷΔΑ͏ʹ͚ͨ͠ΕͲΓ͍ ༻ҙͨ͠%#αʔόʔ͕ශऑͩͬͨ
Ͱɺিಥͨ͠ͷʁ w ੜͨ͠66*%ԯສ w ԯϨίʔυௐͨײͩ͡ͱিಥ͠·ͤΜͰͨ͠
Ͱɺিಥͨ͠ͷʁ w ଟ͠ͳ͍ͱࢥ͏ w 66*%ͩͱিಥ͠ͳ͍ͷ͔͚ͩΕͲɺ୯७ͳIFYͱ͔ Ͳ͏ͳΜͩΖ͏
͓͠·͍