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
tomoya yokota
March 11, 2017
Technology
8
3.9k
障害にすてるところなし
tomoya yokota
March 11, 2017
Tweet
Share
More Decks by tomoya yokota
See All by tomoya yokota
レガシーSolrの Elasticseach移行 Cybozu Tech Meetup #14
yokotaso
0
370
introduction-to-modern-gc
yokotaso
10
3k
product-sutainability
yokotaso
0
300
the-art-of-develop-culture-at-cybozu
yokotaso
0
3.2k
Go-To-Java9
yokotaso
0
210
Other Decks in Technology
See All in Technology
AIエージェント元年
shukob
0
120
Reading Code Is Harder Than Writing It
trishagee
2
110
LINEギフトにおけるバックエンド開発
lycorptech_jp
PRO
0
110
CDKのコードを書く環境を作りました with Amazon Q
nobuhitomorioka
1
110
プロダクトエンジニア構想を立ち上げ、プロダクト志向な組織への成長を続けている話 / grow into a product-oriented organization
hiro_torii
1
290
Autonomous Database Serverless 技術詳細 / adb-s_technical_detail_jp
oracle4engineer
PRO
17
45k
明日からできる!技術的負債の返済を加速するための実践ガイド~『ホットペッパービューティー』の事例をもとに~
recruitengineers
PRO
3
510
2025-02-21 ゆるSRE勉強会 Enhancing SRE Using AI
yoshiiryo1
1
420
Apache Iceberg Case Study in LY Corporation
lycorptech_jp
PRO
0
130
人はなぜISUCONに夢中になるのか
kakehashi
PRO
6
1.7k
プロダクトエンジニア 360°フィードバックを実施した話
hacomono
PRO
0
120
Building Products in the LLM Era
ymatsuwitter
10
6.1k
Featured
See All Featured
Fashionably flexible responsive web design (full day workshop)
malarkey
406
66k
Bootstrapping a Software Product
garrettdimon
PRO
306
110k
How To Stay Up To Date on Web Technology
chriscoyier
790
250k
Typedesign – Prime Four
hannesfritz
40
2.5k
Build The Right Thing And Hit Your Dates
maggiecrowley
34
2.5k
Making the Leap to Tech Lead
cromwellryan
133
9.1k
Fireside Chat
paigeccino
34
3.2k
Six Lessons from altMBA
skipperchong
27
3.6k
Java REST API Framework Comparison - PWX 2021
mraible
28
8.4k
Keith and Marios Guide to Fast Websites
keithpitt
411
22k
Producing Creativity
orderedlist
PRO
344
39k
A Tale of Four Properties
chriscoyier
158
23k
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