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ライブストリーミングサービスの負荷を捌くためにしたNのこと
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Keigo AOKI
July 03, 2016
Technology
1
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ライブストリーミングサービスの負荷を捌くためにしたNのこと
YAPC::Asia Hachioji 2016 mid in Shinagawaで発表した資料
Keigo AOKI
July 03, 2016
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Transcript
Concert crowd with stage lights | CC-BY: Vector Open Stock
https://www.vectoropenstock.com/vectors/preview/69124/concert-crowd-with-stage-lights ϥΠϒετϦʔϛϯάαʔϏεͷ ෛՙΛࡹͨ͘Ίʹͨ͠Nͷ͜ͱ ੨ ܒ߶ @hoyo1111 n = 3
@hoyo1111 ੨ܒ߶ʢ͓͖͚͍͋͝͏ʣ גࣜձࣾѮɹɹɹɹࣥߦһ$50ɹˡࠓͬͪ͜ͷ גࣜձࣾϗϤελɹදऔక 1)1FSͰ͢
ओʹ1IBMDPOͱ͍͏ϑϨʔϜϫʔΫΛ͍ͬͯ·͢ ͱͱӦۀͬͯ·ͨ͠ʢʣ ΤϯδχΞͱͯ͠ͷ࣮ܦݧѮ͕ࣾͰ͢
ࠓ͢͜ͱ ΤϯδχΞܦݧθϩͷਓ͕ؒελʔτΞοϓʹδϣΠϯͯ͠ɺ ؾ߹ͱࠜੑͰαʔϏεΛܧଓ͖ͤͯͨ͞Τϐιʔυ αʔϏεͷεέʔϧʹؔ͢Δͻͱͭͷࣄྫ ΠϯϑϥͷεέʔϧΛߟ͑Δͱ͖ʹ৺͕͚͍ͯΔ͜ͱ
Concert crowd with stage lights | CC-BY: Vector Open Stock
https://www.vectoropenstock.com/vectors/preview/69124/concert-crowd-with-stage-lights ϥΠϒετϦʔϛϯά
Concert crowd with stage lights | CC-BY: Vector Open Stock
https://www.vectoropenstock.com/vectors/preview/69124/concert-crowd-with-stage-lights
None
Concert crowd with stage lights | CC-BY: Vector Open Stock
https://www.vectoropenstock.com/vectors/preview/69124/concert-crowd-with-stage-lights ഭΓདྷΔόʔεττϥϑΟοΫ
ϥΠϒετϦʔϛϯάத
ࢹௌऀ͕૿͑ͳ͍Α͏ʹ ϓογϡ௨Λ͖͋ΒΊΔ҉ࠇظ n = 1 ʢ2લ͘Β͍ʣ
ଓ͚ͯݟΔϢʔβ͍ΔͷͰ 19࣌ΑΓ20࣌ɺ 20࣌ΑΓ21࣌ͷ΄͏͕ ΞΫηε͕૿͑Δ͜ͱ͕ଟ͍ तۀ5ʙ10લʹϓογϡ௨Λૹ͍͕ͬͯͨɺ ෛՙ͕ߴ͍ͷͱ͖҆ఆੑΛ༏ઌ͠ٽ͘ٽ͖͋͘ΒΊΔ͜ͱ…
ΞΫηε૿ͷରࡦ͕΄΅օແͰ ίϝϯτऔಘͷͨΊͷϙʔϦϯάͰ αʔόͷෛՙ͕૿େ͠ଓ͚Δ ʂ ͏ݶք ʂ
$BDIJOH-PBE#BMBODJOH
ElastiCache(Memcached)Λ͍ ίϝϯτऔಘͳͲҰ෦ʹ͍ͭͯ HTTPϦΫΤετ݁ՌΛΩϟογϡ ʂ
Ξοϓϩʔυͨ͠ը૾ͳͲ ֨ೲઌΛS3ʹมߋ ʂ ηογϣϯใͷอଘઌ Memcacheʹมߋ ELBΛಋೖ
n = 2 ৴͕ελʔτ͢ΔλΠϛϯά͚ͩ ҟৗͳ΄ͲԠ͕͘ͳΔ֦େظ ʢલ͘Β͍ʣ
ΞϓϦىಈ࣌ʹΫΤϦ͕ଟ࣮ߦ - Ϣʔβೝূ / ձһεςʔλε֬ೝ - ৴εέδϡʔϧදࣔ - ΞϓϦ௨ͷ༗ແ֬ೝɹͳͲ ʂ
͏ݶք ʂ
"NB[PO"VSPSB
ʂ RDSͷΤϯδϯΛAuroraมߋ ߋ৽ܥΫΤϦͷΈwriterʹ͚Δ ࢀরܥΫΤϦread replica
nginx php-fpm haproxy writer read replica read replica
n = 3 ͨΓతͩͬͨϩάऩू͕ αʔϏεͷΛ્͢Δసظ ʢ΄΅ݱࡏਐߦܗʣ
ϥΠϒετϦʔϛϯάࢹௌϢʔβͷ ΞΫηεϩάΛMySQLʹอଘ ࢹௌ։࢝ˠΛѲ͍ͨͨ͠Ί ϙʔϦϯάͷDBʹΫΤϦ͕Δ ͏ݶք ʂ
4FSWFSMFTT"SDIJUFDUVSF
ϩάͷҰ࣌อଘઌΛ DynamoDBʹมߋ͠ɺ طଘͷAPI Server͔Β LambdaʹॲཧΛҕৡ
ϩάͷҰ࣌อଘઌΛ DynamoDBʹมߋ͠ɺ طଘͷAPI Server͔Β LambdaʹॲཧΛҕৡ ৴ऴྃޙʹWorker͕ DynamoDBͷϨίʔυΛ దʹܗ͔ͯ͠Βอଘ
Concert crowd with stage lights | CC-BY: Vector Open Stock
https://www.vectoropenstock.com/vectors/preview/69124/concert-crowd-with-stage-lights େʹ͖ͯͨ͜͠ͱ
Concert crowd with stage lights | CC-BY: Vector Open Stock
https://www.vectoropenstock.com/vectors/preview/69124/concert-crowd-with-stage-lights #VJMEUP5IJOL
Γͳ͕Βߟ͑Δ ձࣾαʔϏεͷϑΣʔζʹΑͬͯબࢶແݶେ ࣍ʑͱ৽͍ٕ͠ज़͕ग़ͯ͘ΔͷͰ࠷దղৗʹมԽ͢Δ ͦͦɺεέʔϧͷ֦େΑΓ༏ઌ͖͢͜ͱ͕͍͍ͩͨଟ͍
Concert crowd with stage lights | CC-BY: Vector Open Stock
https://www.vectoropenstock.com/vectors/preview/69124/concert-crowd-with-stage-lights OBOJHJHBOUVNVNFSJTJOTJEFOUFT
ڊਓͷݞʹͷΔ ୳ͤࢁͷΑ͏ʹέʔεελσΟ͕ग़ͯ͘Δ શͯΛθϩ͔Β͍ͭͬͯ͘Δ༨༟ͳ͍ ελʔτΞοϓʹͱͬͯɺ࠷ઌͷҰา͋ͱΛาΉ͘Β͍͕ ͪΐ͏Ͳ͍͍ʢ߹ଟ͍ʣ ٕज़ͷΈ߹Θͤ࣍ୈͰʢ͋Δఔ·ͰʣͳΜͱ͔ͳΔ
Concert crowd with stage lights | CC-BY: Vector Open Stock
https://www.vectoropenstock.com/vectors/preview/69124/concert-crowd-with-stage-lights 8FSF)JSJOH