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ISUCON初参加で何もできなかった話 / do_nothing_at_isucon
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Takeshi Kondo
September 20, 2018
Technology
1
760
ISUCON初参加で何もできなかった話 / do_nothing_at_isucon
isucon#8参加記録
Takeshi Kondo
September 20, 2018
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Transcript
*46$0/ॳࢀՃͰ ԿͰ͖ͳ͔ͬͨ LPOEPUBLFTIJ !DIBTQZ NLNL
http://isucon.net/
3FHVMBUJPO w ΞϓϦέʔγϣϯͷύϑΥʔϚϯεվળ w ෳݴޠͰ࣮͕༻ҙ͞Ε͍ͯΔ w Πϯϑϥ714্ͷ7. w ओ࠵͕༻ҙͨ͠ϕϯνϚʔΫࢼݧͷͰڝ͏ w
)5.-ͷ%0.ߏͷมߋېࢭ w ֎෦Ϧιʔεͷ༻ېࢭ w ڝٕ࣌ؒ࣌ؒ࣌ʙ࣌ͷ࣌ؒ w ࠷ޙͷϕϯνϚʔΫͷ͕࠾༻͞ΕΔ http://isucon.net/archives/52445389.html
5FBNɿʮ༧બམͪʯ w ʮࡢz༏উzͱ͍͏νʔϜ໊Ͱ༧બམ͔ͪͨ͠Βʯ w !VKJIJTB8FCEFWFMPQQFSBU2VJQQFS w !TBUZV8FCEFWFMPQQFSBU2VJQQFS w !DIBTQZ43&BU2VJQQFS
༧બຊ൪·Ͱ w ɿ!VKJIJTB͕TMBDLͰνʔϜืू w ɿνʔϜ݁ ਃ͠ࠐΈకΊΓ w ɿ.FFUJOH w
ɿ༧બຊ൪
w σΟεϓϨΠςʔϒϧɺిݯͳͲཧ४උ w w ߏѲɺTTILFZϩάΠϯ֬ೝɺ࣮Ѳɺϕϯν ϚʔΫ࣮ࢪɺHJUཧԽɺSFMFBTFTDSJQU࡞FUD w ͓ன
w ࢹMPHHJOHઃఆՃɺϘτϧωοΫஅ w ࢄาˍίʔώʔϒϨΠΫ☕ w "QQվળ w ࠷ऴௐ࠶ىಈࢼݧ
Πϯϑϥߏ JTVDPOB$FOU04 JTVDPOC$FOU04 JTVDPOD$FOU04 )0 )0 )0 #FODI.BSLFS (MPCBM*1 (MPCBM*1
(MPCBM*1 1SJWBUF*1 1SJWBUF*1 1SJWBUF*1 #FODI*1 #FODI*1 #FODI*1 ※ Bench IP࠶ىಈࢼݧͷͱ͖ʹ͏Μͩͱࢥ͏ 80 8080
ΞϓϦߏ w ΠϕϯτཧαΠτ w ओ࠵ऀΠϕϯτΛ࡞Ͱ͖Δ w ϕʔεՁ֨Λܾఆ͠ɺ
ͱ࠲੮ϥ ϯΫʹΑͬͯՁ͕֨ҟͳΔ w ར༻ऀΠϕϯτΛ༧ͨ͠ΓɺΩϟϯηϧͨ͠Γ Ͱ͖Δ
͕ࣗͬͨ͜ͱʢʹޮՌ͕ͳ͔ͬͨ͜ͱʣ w ࣄલ (JU)VCLFZͰTTI͢ΔͨΊͷTDSJQU࡞ w .BSJB%#HFOFSBMMPHTMPXRVFSZMPHग़ྗ w .BSJB%#VQHSBEF w %BUBEPHಋೖ
w TMPXRVFSZվળͷͨΊͷJOEFY࡞ w )0Ͱෛՙࢄ ࣦഊ w %#ॻ͖ࠐΈઌΓସ͑ ࣦഊ
ਪଌ͢ΔͳɺܭଌͤΑ
ܭଌ͕ͨ͠ʜ
ͦͦ*46$0/߈ུͷఆੴʁ w ҆શʹมߋΛՃ͑Δ४උ HJUཧSFMFBTFTDSJQU w ΠϯϑϥͷߏΛѲ͢Δ w ΞϓϦͷϩδοΫΛѲ͢Δ w
ϕϯνϚʔΫͷ)551ϦΫΤετ༰ΛѲ w ϘτϧωοΫΛಛఆ w վળ
ͦͦ*46$0/߈ུͷఆੴʁ w ҆શʹมߋΛՃ͑Δ४උ HJUཧSFMFBTFTDSJQU w ΠϯϑϥͷߏΛѲ͢Δ w ΞϓϦͷϩδοΫΛѲ͢Δ w
ϕϯνϚʔΫͷ)551ϦΫΤετ༰ΛѲ w ϘτϧωοΫΛಛఆ w վળ ͜͜·ͰͰ͖ͨ RubyͱɺSQLͷཧղෆ ͦΕΒ͍͍͠QueryΘ͔Δ͕ɺ ͲΕ͕ϕϯνϚʔΫʹޮ͔͘Θ͔Βͳ͍
ԿΛܭଌ͢Δͷ͔ʁ w جຊతͳίϯϐϡʔλʔϦιʔε w $16 NFNPSZ EJTL*0 -PBE"WFSBHF w )551Ϩεϙϯεछผɺ࣌ؒ
w 42-ΫΤϦछผɺ࣌ؒ w %BUBCBTFͷ෦ੑೳ
ͳͥԿͰ͖ͳ͔ͬͨͷ͔ w 8FC%FWFMPQFSͷਓʹΞϓϦΛ·͔ͤɺΠϯϑϥ໘Ͱ ߩݙ͠Α͏ͱͨ͠ w Α͘Βͳ͍ͷ )0 ͰෛՙࢄΛ͠Α͏ͱͨ͠ w FUDIPTUTͰ%/4ͰΕΑ͔ͬͨΆ͍
ࢥ͍͔ͭͣ w ܦݧͷ͋ΔOHJOYIBQSPYZʹೖΕସ͑Δ͖ͩͬͨ w 42-&91-"*/ޙͷΞΫγϣϯ͕औΕͳ͍ ࣝෆ w %BUB%PHྗෆ 43&ͱͯ͠Ϡό͍ w ϕϯνϚʔΫ࣮࣌ؒߦͳͷͰɺՄࢹԽ͕͍͠ w IUPQͰோΊΔ΄͏͕ଥ
Ͳ͏͖ͩͬͨ͢ͷ͔ w ఢΛΔʹϕϯνϚʔΫΛΔ w ϕϯνϚʔΫͷJOJUॲཧͷཧղʹ࣌ؒΛ͔͚Δ͖ w JOJUॲཧ͕MPDBMIPTUͷ%BUBCBTFʹର͍ͯͬͯͨ͠ w ͦͷͨΊ%#ͷ͖ઌΛΓସ͑Δͱࣦഊͨ͠ w
BQQTFSWFSͷෛՙࢄΛ࠷༏ઌ͖͢ w ࠓճQVNBʹΑͬͯϝϞϦ͕ރׇ͍ͯͨ͠ w QBUIʹΑͬͯQSPYZઌΛม͑ΔͳͲͯ͠ॏ͍ॲཧͱɺ ͦ͏Ͱͳ͍ॲཧΛ͚Δͱ͍͏͜ͱ͕Ͱ͖ͨͣ
ͤΊͯ͜Ε͙Β͍Ͱ͖͍͔ͯͨͬͨ JTVDPOB$FOU04 JTVDPOC$FOU04 JTVDPOD$FOU04 #FODI.BSLFS (MPCBM*1 (MPCBM*1 (MPCBM*1 1SJWBUF*1 1SJWBUF*1
1SJWBUF*1 #FODI*1 #FODI*1 #FODI*1 ※ Bench IP࠶ىಈࢼݧͷͱ͖ʹ͏Μͩͱࢥ͏ 80
དྷΠϯϑϥશͯ ԶʹͤΖঢ়ଶͰ͋Γ͍ͨ
ݶΒΕͨ࣌ؒͰྗΛൃش͢ΔͨΊʹ w ࠒ͔Βπʔϧ ٕज़ Λखʹͳ͡·͓ͤͯ͘͜ͱ w ܭଌπʔϧɺղੳπʔϧ w ఆ൪044 w
खʹͳ͡Μٕͩज़Ͱ࠷ߴͷύϑΥʔϚϯεΛൃش͢Δ w ʑͷΩϟονΞοϓˍτϨʔχϯά͕େࣄʜ w ΊͬͪΌͨΓલͷ݁
༧બ௨աνʔϜͱͷҧ͍ w ࣄલ४උෆ w ׂ୲ w ఆੴͷܭଌํ๏ɺܭଌޙͷΞΫγϣϯ͕͋Δͣ w ٕज़ྗෆ w
42-ΫΤϦͷಡղྗ w *OEFYͷΈͱ&91-"*/ͷ͍ํ w σʔλϕʔεͷੑೳࢦඪͷݟํ w ߏมߋΛߦ͏༐ؾͱखࡳ
ࠓͷ͓ؾ࣋ͪ w ΊͬͪΌչ͍͠ w Ͱ͜ͷչ͠͞ࢀՃ͠ͳ͍ͱಘΒΕͳ͍ w ΧϯϑΝϨϯε ग़ΔΑΓࣗͷʹͭͳ͕Δ w չ͠͞ΛֶͼͷϞνϕʔγϣϯʹͭͳ͛Δ
w Ұॹʹग़ͯ͘Εͨਓʹײँ
དྷ༏উ͢Δͧʂʂʂ
དྷΈΜͳग़·͠ΐ͏ʂ
8IPBN* Site Reliability Engineer at Quipper Takeshi Kondo chaspy chaspy_