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
障害にすてるところなし
Search
Sponsored
·
Ship Features Fearlessly
Turn features on and off without deploys. Used by thousands of Ruby developers.
→
tomoya yokota
March 11, 2017
Technology
4.2k
8
Share
障害にすてるところなし
tomoya yokota
March 11, 2017
More Decks by tomoya yokota
See All by tomoya yokota
レガシーソフトウェアを再現性高く置き換える手法 〜「射撃しつつ前進」を支える技術〜
yokotaso
0
100
レガシーSolrの Elasticseach移行 Cybozu Tech Meetup #14
yokotaso
0
470
introduction-to-modern-gc
yokotaso
10
3.2k
product-sutainability
yokotaso
0
350
the-art-of-develop-culture-at-cybozu
yokotaso
0
3.4k
Go-To-Java9
yokotaso
0
230
Other Decks in Technology
See All in Technology
自分のハンドルは自分で握れ! ― 自分のケイパビリティを増やし、メンバーのケイパビリティ獲得を支援する ― / Take the wheel yourself
takaking22
1
910
AI時代のガードレールとしてのAPIガバナンス
nagix
0
280
AWS Agent Registry の基礎・概要を理解する/aws-agent-registry-intro
ren8k
3
370
Hacobu Tech Deck
hacobu
PRO
0
110
Digitization部 紹介資料
sansan33
PRO
1
7.3k
Claude Code を安全に使おう勉強会 / Claude Code Security Basics
masahirokawahara
11
32k
ARIA Notifyについて
ryokatsuse
1
120
実践ハーネスエンジニアリング:TAKTで実現するAIエージェント制御 / Practical Harness Engineering: AI Agent Control Enabled by TAKT
nrslib
11
4.6k
エージェントスキルを作って自分のインプットに役立てよう
tsubakimoto_s
0
350
Do Ruby::Box dream of Modular Monolith?
joker1007
1
340
データを"持てない"環境でのアノテーション基盤設計
sansantech
PRO
1
120
社内エンジニア勉強会の醍醐味と苦しみ/tamadev
nishiuma
0
210
Featured
See All Featured
GraphQLとの向き合い方2022年版
quramy
50
15k
Why Mistakes Are the Best Teachers: Turning Failure into a Pathway for Growth
auna
0
120
The Success of Rails: Ensuring Growth for the Next 100 Years
eileencodes
47
8k
The Straight Up "How To Draw Better" Workshop
denniskardys
239
140k
The Language of Interfaces
destraynor
162
26k
Leadership Guide Workshop - DevTernity 2021
reverentgeek
1
270
Visualizing Your Data: Incorporating Mongo into Loggly Infrastructure
mongodb
49
9.9k
Paper Plane (Part 1)
katiecoart
PRO
0
6.6k
4 Signs Your Business is Dying
shpigford
187
22k
What Being in a Rock Band Can Teach Us About Real World SEO
427marketing
0
220
16th Malabo Montpellier Forum Presentation
akademiya2063
PRO
0
100
Color Theory Basics | Prateek | Gurzu
gurzu
0
290
Transcript
োʹͯ͢Δͱ͜Ζͳ͠ αΠϘζגࣜձࣾ @yokotaso
We’re sorry for …
ӡ༻োͷ • ͝໎Λ͓͔͚ͨ͠Έͳ͞· ͝ΊΜͳ͍͞ • ࢹɾରࡦɾௐࠪɾվળΛʑੋվળ • վળ·ͩ·ͩಓ • αΠϘζΛӬ͘ΑΖ͓͘͠ئ͍͠·͢
ΫϥυͷنͱՔಇ • ͝ܖ͍͍͍ͨͩͯΔձ༷ࣾ 1ສ8ઍࣾ
ӡ༻ো
Boo!
ͦΜͳ͜ͱͳ͍
ŧŔŕŪGOOD
ࣦഊ͔ΒపఈతʹֶͿ োֶश 4
جૅࣝΛ͚ͭΔ
جૅతͳૉཆΛຏ͘ ίϯϐϡʔλͷجૅΛΖ͏
ੜ͖ͨσʔλ͕োʹ͋Δ • ϘτϧωοΫͲ͜ʁ • େنαʔϏεٕज़ೖΛ ࢀর͠ͳ͕Βௐࠪ͢ΔͱษڧʹͳΔ • ϝτϦΫεࢹπʔϧͰ؍͠Α͏ • جૅతͳࣝಎ͕
োௐࠪͷͨͼʹຏ͔ΕΔ
ࣝͱܦݧཌྷΛत͚ͯ͘ΕΔ • ະͷʹग़ձͬͨΒཱͪฦΔॴ • ͍͠΄Ͳղܾͷࢳޱʹ • ҰਓͰௐࠪΛਐΊΒΕΔΑ͏ʹͳͬͨ • ϝτϦΫε͔ΒݪҼΛ༧Ͱ͖ΔΑ͏ʹ
ίϯϐϡʔλʔͷେࣄͳࣄ ো͕ڭ͑ͯ͘Εͨ
ࣝΛਂ۷Γ͢Δ
ಈ࡞ݪཧΛਂ͘ཧղ͢Δ ো࠷ߴͷྑͰ͋Δ
MySQLͷΠϯσοΫε͕͑ͳ͍
খ͞ͳෆ۩߹վम͕ݪҼ • ॏෳআڈͷͨΊʹGROUP BY Λ҆қʹ͚ͭͨͷ͕ݪҼ • JOIN࣌ʹར༻ͨ͠ΠϯσοΫε͕GROUP BY ʹ࠶ར༻Ͱ͖ͳ͍ •
େྔͷϨίʔυʹରͯ͠filesort͕ͬͯྦ
ཧղͨͭ͠Γʹͳͬͯ·ͤΜ͔ • োͷͨͼʹجຊతͳಈ࡞ݪཧΛ֬ೝ • োௐࠪΛ௨ͯ͠ಈ࡞ݪཧͷཧղ͕ਂ·Δ • ಈ࡞ݪཧ͕ਂ͘ཧղͰ͖͍ͯͳ͍ؾ͖ͮ
ো࠷ߴͷྑͰ͋Δ
νʔϜͰڧ͘ͳΔ
ࣦഊΛΏΔ͢จԽ ࣦഊͷڞ༗ஏ͕ͩʹཱͭʂ
Seasar2 S2DAO Ҡߦࣦഊ
͝ΊΜͳ͍͞!͝ΊΜͳ͍͞! • SeasarͷEOLʹ͏Spring FrameworkҠߦ • Seasar S2DAO͔ΒHibernateͷҠߦࣦഊ • ύϑΥʔϚϯεྼԽɺOutOfMemoryError… •
શഊͰ͢ɻ͝໎Λ͓͔͚͠·ͨ͠
ࣦഊΛड͚ೖΕΔจԽ
PostmortemΛॻ͜͏ • Λ٬؍తʹཧ͢ΔͨΊʹ༗༻ • ࣦഊΛੳɾڞ༗ɾࢭ • AWS S3 େنো •
git lab ຊ൪σʔλআ
ࣦഊΛڞ༗Ͱ͖ΔจԽΛ࡞Δ • ࣦഊΛڞ༗ͯ͠܁Γฦ͞ͳ͍จԽΛ࡞Ζ͏ • ࣦഊʹ͍ͭͯޠΔਓͷଘࡏҙٛେ͖͍ • ࣦഊΛڞ༗ͯ͘͠ΕΔਓʹѹతײँ • ݠڏɾଚܟɾ৴པ(HRT) ΛԿ֬ೝ͠Α͏
• ݸਓͷࣦഊͰͳ͍ɺ৫ͷࣦഊͩ
None
ࣦഊޭͷதؒͰ͔͠ͳ͍
సΜͰͨͩͰى͖͕͋Βͳ͍ʂ • ࣦഊͷչ͕͠͞վળʹͭͳ͕Δ • S2Dao͔ΒHibernateͷҠߦࣦഊΛ׆͔ͯ͠ • JDBCTemplateΛར༻ͯ͠࠶ઃܭ • OSSͱͯ͠ެ։༧ఆ
ࣦഊͷڞ༗ஏ͕ͩʹཱͭʂ
Α͜͠·ͳੜ͖ํ
ͣͿͱ͘ੜ͖Δ ੜ͖͍ͯΔ͚ͩͰ·Δ͏͚
Java ṖͷύϑΥʔϚϯεྼԽ
ղܾ͠·ͨ͠ (๑•̀ŷ•́)و✧ • JIT Compiler͕ఀࢭ͢Δέʔε͕͋Δ • JVM͕JIT Compileͨ͠ίʔυΛࣺͯΔ • JIT
Compiler͕෮ؼͤͣɺ࠷దԽͷ͔͔Βͳ͍ Byte CodeΛJava͕࣮ߦ͠ଓ͚Δ • ύϑΥʔϚϯεྼԽΛى͜͢
ղܾͷࢳޱ • GCʹׂΓͯΔThread CPU͔Βܾ·Δ • GCʹׂΓͯΒΕͨThread CPUΛ100%ઐ༗͢Δ
ղܾͷࢳޱ • GCʹΑΔCPUར༻Λߟྀͯ͠༨༟͕͋Δ • Full GCൃੜ͍ͯ͠ͳ͍ • GCΛݪҼ͔Βഉআ • CPUෛՙ্͕͕ΔέʔεΛMLͰಡΈ͋͞Δ
ϒϩάʹެ։
None
͝Ѫಡ͋Γ͕ͱ͏͍͟͝·͢ʂ • ͜ͷهࣄ͚ͩͰ 1ສ5ઍPV • ࠷ऴతʹ 700ͯϒ͘Β͍ • OSS͓ੈʹͳΓͬͺͳ͠ •
ใެ։Ͱߩݙ͍ͨ͠ؾ࣋ͪ
ͣͿͱ͘ੜ͖ΔΑ͏ʹ • ໘ന͍ٕज़هࣄʹͳͬͨΒṶ͚ͷ • ໘ന͍ࣄ͋ͬͨΒ͍͍ͳ͕ϞνϕʔγϣϯʹมԽ • ࠶ىಈͰճආͭͭ͠ظؒɺো͕ൃੜ͍ͯͨ͠ • Θ͔Βͳ͍͍ͯ͘ɾಀ͍͍͛ͯ •
ੜ͖͍ͯΔ͚ͩͰ·Δ͏͚ͷਫ਼ਆ
ௐΔ͚ͩͰ·Δ͏͚ʂ
োֶशɺ͔ͲΓ·͔ͬ
োʹͯ͢Δͱ͜Ζͳ͠