Event Sourcing,CQRS For PHP Application

by yuuki takezawa

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Event Sourcing CQRS For PHP Application yuuki takezawa phpcon fuk 2018

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͸ͳ͢͜ͱ • Event • CQRS • Event Sourcing + CQRS • Event Sourcing / Message Broker • ࣮ྫ

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͸ͳ͞ͳ͍͜ͱ • DDD • Lambda Architecture • Kappa Architecture • Apache Sparkʹ͍ͭͯ

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DDDͱҰॹʹड़΂ΒΕΔ͜ͱ͕ଟ͍Ͱ͕͢ɺ େن໛ͳσʔλॲཧͰ΋׆༻Ͱ͖Δύλʔϯ

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όονॲཧ͕ଟ͍ΞϓϦέʔγϣϯ΍ɺ ෳ਺ͷσʔλϕʔεؒͰ σʔλಉظΛ͢ΔΞϓϦέʔγϣϯʹ΋

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Event / Application Side

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Event? • Observerύλʔϯ • ʙͨ࣌͠ʹɺʙ͢Δ Λදݱ͢Δ • PHPͷ༷ʑͳΞϓϦέʔγϣϯͰར༻͞Ε͍ͯΔ • \SplObserver, SplSubject

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Event / PHP • Symfony Event Dispatcher • Illuminate Events (Laravel) • Zend Event Manager • RxPHP • ReactPHP

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Event / PHP • γεςϜ౎߹ͰऔΓೖΕΔέʔε΋ଟ͍ • Request͕དྷͨΒɺRouteΛىಈͤ͞Δ • ʙͷॲཧ͕׬ྃͨ͠Βɺϩάʹॻ͖ग़͢

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public function __invoke( FulltextRequest $request ): RedirectResponse { // ొ࿥ॲཧޙʹevent try { $entity = new Entity(1, ‘testing’); $this->dispatcher->dispatch( new SinkConnect($this->usecase->run($entity)) ); } catch(\RuntimeException $e) { // Կ͔errorॲཧ } return $this->redirector->route('fulltext.index'); }

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Domain Event

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Event • υϝΠϯϞσϧ಺Ͱൃੜ͢Δग़དྷࣄ / υϝΠϯΠϕϯτ • ʙͨ࣌͠ʹɺʙ͢Δ Λදݱ͢Δ • υϝΠϯϞσϧΛލΔ΋ͷʹ஫໨͢Δ • ۀ຿తͳ؍఺͔ΒΠϕϯτͱͯ͠ѻ͏͔  ܦաΛແࢹ͢΂͖͔Ͳ͏͔ͳͲ

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Domain Event + Observer in PHP

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ҰͭͷPHPΞϓϦέʔγϣϯͷ৔߹ • υϝΠϯϞσϧ಺ͷग़དྷࣄΛ  ObserverΛ࢖࣮ͬͯ૷͢Δ • ΞϓϦέʔγϣϯͷΫϥε͕ංେԽͨ࣌͠  খ͞ͳΫϥεʹ෼ׂ͢Δ৔߹΍ɺ  ϦϑΝΫλϦϯάʹར༻͢Δ͜ͱ΋  • ୯ҰͷΞϓϦέʔγϣϯ಺Ͱ࣮૷͢Δ৔߹ʹ༗༻  (1ϓϩηεΏ͑)

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ߟྀ͢Δ͜ͱ • ϚΠΫϩαʔϏεͰ࿈ܞ͢Δ৔߹͸Ͳ͏͢΂͖͔ • ʙͨ࣌͠ʹɺʙ͢Δ  ଞͷΞϓϦέʔγϣϯɾݴޠͰ࣮ߦ͞ΕΔ͔  ੾Γग़͢ඞཁ͕͋Δ͔Ͳ͏͔

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ߟྀ͢Δ͜ͱ • ෳ਺ͷΞϓϦέʔγϣϯͱ࿈ܞͨ͠৔߹ͷো֐෮چ  ϩάΛग़ྗ͍ͯ͠Δ͚ͩͰࡁΉ͔Ͳ͏͔ • ݁ՌΛσʔλϕʔεʹอଘ͠ɺ  ΞϓϦέʔγϣϯͷσʔλͱͯ͠׆༻  ݁ՌʹࢸΔ·Ͱͷաఔ͸ඞཁ͔Ͳ͏͔ • ཤྺσʔλอଘ͚ͩͰࡁΉ͔Ͳ͏͔

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ݎ͘ɺͦͯ͠ো֐ʹ΋ڧ͍ ΞϓϦέʔγϣϯʹ͠ͳ͚Ε͹ͳΒͳ͍

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Event Sourcing

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Event Sourcing • ΠϕϯτΛه࿥ͯ͠࠶ݱ͢Δύλʔϯ • ΠϕϯτΛΠϕϯτετΞʹอଘ • ه࿥͞ΕͨΠϕϯτ͔ΒΦϒδΣΫτΛ෮ݩͰ͖Δ • ΠϕϯτʴϩάʴΦϒδΣΫτɺΠϕϯτ͸ෆม • ൃੜͨ͠ࣄ࣮Λ఻͑Δ

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Event SourcingΛಋೖ͢΂͖Ͱ͸ͳ͍৔߹ • ΠϕϯτΛه࿥ͯ͠࠶ݱ͢Δඞཁ͕ͳ͍৔߹ • ه࿥͞ΕͨΠϕϯτ͔Β  ΦϒδΣΫτΛ෮ݩ͢Δ͜ͱ͕ͳ͍৔߹ • খن໛ͳΞϓϦέʔγϣϯɺ  γϯϓϧͳCRUD͔͠ͳ͍ΞϓϦέʔγϣϯ • ࢀরΑΓ΋ॻ͖ࠐΈ͕ϝΠϯͷΞϓϦέʔγϣϯ

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Event Sourcing • PHPͰͲ͏΍࣮ͬͯ૷͢Δ͔ʁ • RDBMSͱ૊Έ߹ΘͤͯશͯͷΠϕϯτ৘ใΛอ؅ʁ • େن໛ͳσʔλʹ͸ରԠͰ͖Δ͔ʁ • ר͖໭͠ͷॲཧ͸Ͳ͏͢Δ͔ʁ

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Asynchronous / Synchronous Event

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ಉظΠϕϯτ • Πϕϯτ͸ಉظॲཧͰ͋Δ΂͖͔Ͳ͏͔  Πϕϯτൃੜ࣌ʹଈ࠲ʹଞΞϓϦέʔγϣϯʹ൓ө͢Δ ඞཁ͕͋Δ͔ • ΠϕϯτൃߦɺΠϕϯτཤྺอ࣋ɺ  αϒεΫϥΠόʹΑΔσʔλӬଓԽΛߦ͏

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ඇಉظΠϕϯτ • Πϕϯτ͸ඇಉظʹͰ͖Δ͔Ͳ͏͔  Πϕϯτ͕ൃੜͨ͜͠ͱΛ୲อ͠ɺ  ଞΞϓϦέʔγϣϯ΁ͷ൓ө͸஗Ԇͤͯ͞΋Α͍͔ • ΠϕϯτൃߦɺΠϕϯτཤྺอ࣋·Ͱ  σʔλӬଓԽ͸஗ԆͰ࣮ߦ͞ΕΔ  (χΞϦΞϧλΠϜఔ౓)

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CQRS

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ΞϓϦέʔγϣϯͷ੒௕Ͱൃੜ͢Δ໰୊ • σʔλϞσϧͱύϑΥʔϚϯε • αʔϏε੒௕ͱڞʹ૿͑ΔෳࡶͳΫΤϦͱ૿͑Δ༰ྔ • σʔλͷਖ਼͠͞(ਖ਼نԽ)͔ޮ཰Խ͔(ඇਖ਼نԽ) • RDBMSͷෆಘҙ෼໺ + NoSQLʹΑΔΧόʔ  ಉظํ๏ͷෳࡶԽ

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σʔλϕʔεઃܭͷ೰Έ • ਖ਼نԽͱநग़͍ͨ͠σʔλͷΪϟοϓ • நग़͍ͨ͠σʔλʹ߹ΘͤͨઃܭΛ͢Δ͜ͱʹΑΔ  ੍໿͕͔͚ΒΕͳ͍δϨϯϚ • ࣮૷ίʔυͰ୲อ͢ΔͨΊʹෳࡶԽ • ಛఆͷσʔλϕʔεʹରͯ͠ͷCRUDʹґଘͨ͠ߟ͑

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ਖ਼نԽ͸͢΂͖ʂ

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ϏδωεཁٻʹରԠ͢ΔͨΊʹ  σʔλϕʔεͰશͯରԠ͢Δͷ͸ਖ਼͍͔͠ ਖ਼نԽɺඇਖ਼نԽ͸  ಉ࣠͡Ͱߟ͑Δ΂͖Ͱ͸ͳ͍

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Ϗδωεཁٻ γεςϜ౎߹(ϑϨʔϜϫʔΫͳͲ) Ϋϥεઃܭ γϯϓϧ͞ ύϑΥʔϚϯε

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CQRS "A few myths about CQRS". Ouarzy's Blog.   http://www.ouarzy.com/2016/10/02/a-few-myths-about-cqrs/ ࢀর

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CQRSͱ͸Կ͔ • ॻ͖ࠐΈ(෭࡞༻͋Γ)ͱ  ಡΈࠐΈ(෭࡞༻ͳ͠)Λ෼཭͢Δ • ෭࡞༻͋Γ͸σʔλͳͲʹԿΒ͔ͷมߋΛ༩͑Δ΋ͷ  • ॻ͖ࠐΈ => Command  • ಡΈࠐΈ => Query

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CQRS • ͋ΒΏΔϝιου͸ɺΞΫγϣϯΛ࣮ߦ͢ΔίϚϯυ ͔ɺݺͼग़͠ݩʹσʔλΛฦ͢ΫΤϦ͔ͷ͍ͣΕ͔Ͱ ͋ͬͯɺ྆ํΛߦͬͯ͸ͳΒͳ͍ɻ͜Ε͸ɺ࣭໰Λ͢Δ ͜ͱͰճ౴ΛมԽͤͯ͞͸ͳΒͳ͍ͱ͍͏͜ͱͩɻ    "Greg YoungྲྀCQRS - Mark Nijhof". Digital Romanticism.   http://d.hatena.ne.jp/digitalsoul/20100712/1278886009 ࢀর  

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Command • ੔߹ੑ  ੍໿Λ͔͚ͯਖ਼͘͠ɺݎ͘ • ॻ͖ࠐΈɺߋ৽ɺ࡟আॲཧ͸  ಡΈࠐΈʹൺ΂ͯޮ཰ੑ΍଎౓ɺ  εέʔϥϏϦςΟΛҙࣝ͢Δ͜ͱ͸͋·Γͳ͍

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Query • ੔߹ੑΑΓ΋ݕࡧޮ཰ • ΄ͱΜͲͷΞϓϦέʔγϣϯʹ͓͍ͯɺ  ॻ͖ࠐΈΑΓ΋ݕࡧͷൺॏ͕େ͖͍͜ͱ͕΄ͱΜͲ • εέʔϧ͕༰қͰ͋Δ͜ͱɺ  ߴ଎ͳύϑΥʔϚϯεͰ͋Δ͜ͱ

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PHPΞϓϦέʔγϣϯ޲͚  Command, Query෼཭࣌ͷσʔλϕʔε

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Command

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Query

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Query

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Query

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Query

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Query

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Query

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CQRS Application Application

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ཧ۶͸Θ͔Δ͚Ͳɺ Ͳ͏࣮૷͢Ε͹͍͍ͷ͔ʁ ಉظ͸Ͳ͏͢Δͷʁ

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Event Sourcing + CQRS

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Event Sourcing / Command Event Application Command RDBMS

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Event Sourcing / Command Event Application Command RDBMS ΞϓϦέʔγϣϯ͔Β ॻ͖ࠐΈࢦࣔ(class)

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Event Sourcing / Command Event Application Command RDBMS ΞϓϦέʔγϣϯ͔Β ॻ͖ࠐΈࢦࣔ(class) σʔλϕʔεʹinsert

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Event Sourcing / Command Event Application Command RDBMS ΞϓϦέʔγϣϯ͔Β ॻ͖ࠐΈࢦࣔ(class) σʔλϕʔεʹinsert ਖ਼ৗʹॻ͖ࠐ·Εͨ ࣄ࣮Λฦ٫

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Event Sourcing / Command Event Application Command RDBMS ΞϓϦέʔγϣϯ͔Β ॻ͖ࠐΈࢦࣔ(class) σʔλϕʔεʹinsert ਖ਼ৗʹॻ͖ࠐ·Εͨ ࣄ࣮Λฦ٫ ࣄ࣮ʹج͍ͮͨ  ΠϕϯτΛൃߦ

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Event Sourcing / Command Event Application Command RDBMS Transaction

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Event Sourcing / Query Event / Listener Application NoSQL Query

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Event Sourcing / Query Event / Listener Application NoSQL Query EventͷൃߦΛݕ஌͠ NoSQLʹσʔλΛૠೖ

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Event Sourcing / Queryྫ Event / Listener Application NoSQL Query EventͷൃߦΛݕ஌͠ NoSQLʹσʔλΛૠೖ Application͔ΒQuery  நग़໰͍߹Θͤ

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Event Sourcing / Query Event / Listener Application NoSQL Query EventͷൃߦΛݕ஌͠ NoSQLʹσʔλΛૠೖ Application͔ΒQuery  நग़໰͍߹Θͤ NoSQLʹ໰͍߹Θͤ υϝΠϯʹ࠷దԽ͞Εͨ΋ͷΛظ଴

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Event Sourcing / Query Event / Listener Application NoSQL Query EventͷൃߦΛݕ஌͠ NoSQLʹσʔλΛૠೖ Application͔ΒQuery  நग़໰͍߹Θͤ NoSQLʹ໰͍߹Θͤ υϝΠϯʹ࠷దԽ͞Εͨ΋ͷΛظ଴ ݁ՌΛฦ͢ͷΈ

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Cache System σʔλϕʔεߋ৽  $PNNBOE σʔλϕʔεߋ৽׬ྃΠϕϯτ  &WFOU4PVSDJOH σʔλϕʔεߋ৽׬ྃݕ஌  &WFOU-JTUFOFS Ωϟογϡ࡟আͳͲ

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Structure Event Publisher Command Query Event Subscriber

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Structure Event Publisher Command Query Event Subscriber ੹຿͸ॻ͖ࠐΈͷΈ

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Structure Event Publisher Command Query Event Subscriber ੹຿͸ॻ͖ࠐΈͷΈ ੹຿͸ಡΈࠐΈͷΈ

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Structure Event Publisher Command Query Event Subscriber ੹຿͸ॻ͖ࠐΈͷΈ ੹຿͸ಡΈࠐΈͷΈ ੹຿͸Eventૹ৴ͷΈ

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Structure Event Publisher Command Query Event Subscriber ੹຿͸ॻ͖ࠐΈͷΈ ੹຿͸ಡΈࠐΈͷΈ ੹຿͸Eventૹ৴ͷΈ ੹຿͸Eventड৴ͱ  ॻ͖ࠐΈ

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Event Sourcing • CommandɺQueryɺEvent Sourcing͸  ผΞϓϦέʔγϣϯɾݴޠͰ࣮૷Ͱ͖Δ͘Β͍ͷ  γϯϓϧ͞ • EventอଘͱυϝΠϯʹରԠͨ͠QueryΛͲ͏΍ͬͯ  ޮ཰తʹ࣮૷͢Δ͔

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ΞϓϦέʔγϣϯ෼ׂྫ

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ΞϓϦέʔγϣϯ෼ׂྫ PHP WebΞϓϦέʔγϣϯ webΞϓϦ։ൃνʔϜ

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ΞϓϦέʔγϣϯ෼ׂྫ PHP WebΞϓϦέʔγϣϯ webΞϓϦ։ൃνʔϜ ूܭॲཧ push etc CLI։ൃνʔϜ / DWH etc

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ΞϓϦέʔγϣϯ෼ׂྫ PHP WebΞϓϦέʔγϣϯ webΞϓϦ։ൃνʔϜ ूܭॲཧ push etc CLI։ൃνʔϜ / DWH etc ޿ࠂ഑৴ܥAPI ޿ࠂ഑৴։ൃνʔϜ

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ΞϓϦέʔγϣϯ෼ׂྫ PHP WebΞϓϦέʔγϣϯ webΞϓϦ։ൃνʔϜ ूܭॲཧ push etc CLI։ൃνʔϜ / DWH etc ޿ࠂ഑৴ܥAPI ޿ࠂ഑৴։ൃνʔϜ ϢʔβʔͷӾཡ৘ใʹج͍ͮͨ ৘ใ͕ཉ͍͠Ͱ͢ ϦΞϧλΠϜͰ

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Event Sourcing / Message Broker

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Event SourcingͱMiddlewareબఆ • PubSubͰشൃੑͷͳ͍΋ͷΛબ୒͢Δ • ϝοηʔδอ؅͕ՄೳͰɺ࠶ݱ͢Δ͜ͱ͕Մೳͳ΋ͷ Λ࠾༻͢Δͷ͕๬·͍͠ • εέʔϥϒϧͰ͋Δ͜ͱ

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Event Sourcing / RDBMS • PubSubͰشൃੑͷͳ͍΋ͷΛબ୒͢Δ  ͦΜͳػೳ͸ͳ͍ͷͰόονॲཧͳͲͰ  ఆظతʹσʔλ௥Ճ͕͋Δ͔Ͳ͏͔Λݕࡧ͢Δ  • ϝοηʔδอ؅͕ՄೳͰɺ࠶ݱ͢Δ͜ͱ͕Մೳͳ΋ͷΛ࠾༻͢Δͷ ͕๬·͍͠  ಘҙ෼໺ • εέʔϥϒϧͰ͋Δ͜ͱ  SlaveͳͲΛ૿΍͢͜ͱͰରԠ͸Ͱ͖Δ

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Event Sourcing / Redis • PubSubͰشൃੑͷͳ͍΋ͷΛબ୒͢Δ  PUBLISH SUBSCRIBEͳͲ͕͋ΔͷͰ࣮ݱ͸Ͱ͖Δ͕ɺ  شൃੑʹ͍ͭͯ͸ઃఆͰؤுΔ  • ϝοηʔδอ؅͕ՄೳͰɺ  ࠶ݱ͢Δ͜ͱ͕Մೳͳ΋ͷΛ࠾༻͢Δͷ͕๬·͍͠  ͋·ΓಘҙͰ͸ͳ͍(τϥϯβΫγϣϯͳ͠) • εέʔϥϒϧͰ͋Δ͜ͱ  ༰қʹͰ͖Δ

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Message Broker

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Apache Kafka • ZookeeperΛར༻ͨ͠ΫϥελϦϯάʹΑΔߴՄ༻ੑ • ϝοηʔδͷӬଓԽɺϨϓϦέʔγϣϯɺ࠶औಘՄ • ϏοάσʔλରԠ • ετϦʔϜରԠͷϝοηʔδϯάϛυϧ΢ΣΞ • Kafka ConnectʹΑΔपลγεςϜͱͷߴ͍਌࿨ੑ  (Amazon kinesisͱ΄΅ಉ͡)

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Event Sourcing • ΠϕϯτΛΠϕϯτετΞʹอଘ  Kafkaࣗମʹอଘ͢Δ͜ͱ͕Ͱ͖ɺ  σʔλϕʔεʹసૹՄೳ • ه࿥͞ΕͨΠϕϯτ͔ΒΦϒδΣΫτΛ෮ݩͰ͖Δ  ॲཧ͞ΕͨΠϕϯτ͸࠶ൃߦՄೳ • ΠϕϯτʴϩάʴΦϒδΣΫτɺΠϕϯτ͸ෆม  ൃߦޙͷΠϕϯτΛॻ͖׵͑Δ͜ͱ͸Ͱ͖ͳ͍ • ൃੜͨ͠ࣄ࣮Λ఻͑Δ  τϥϯβΫγϣϯ͋Γ

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ϝοηʔδͷܽଛʹ͍ͭͯ ૹ৴ࣦഊ BDLड৴ࣦഊ #SPLFSμ΢ϯ ϝοηʔδड৴ࣦഊ

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ϝοηʔδ఻ୡͷอূ • At least once semantics  ॏෳΛڐՄ • At most once semantics  ܽଛΛڐՄ • Exactly once semantics  ॏෳɺ͓ΑͼܽଛΛڐՄ͠ͳ͍    "Exactly-once Semantics are Possible: Here’s How Kafka Does it". Conﬂuent APACHE KAFKA.   https://www.conﬂuent.io/blog/exactly-once-semantics-are-possible-heres-how-apache-kafka-does-it/ ࢀর

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Performance?

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Apache Kafka֓ཁ • Partition  ෛՙ෼ࢄ༻్ʹར༻  ෳ਺ͷConsumer͕ͦΕͧΕͷPartitionΛࢀর͠ɺ  ͦΕͧΕ͕ॲཧΛߦ͏  ॲཧϑϩʔͷσβΠϯʹΑͬͯଟ༷ͳར༻ํ๏ • librdkafka͕ඇৗʹߴ଎  PHPͰ͸rdkafka(librdkafkaϥοϓ)

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Example Partition

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Performance • conﬂuent: 250000 records, 34.84177593s • sarama-cluster: 250000 records, 2m20.614963038s  • conﬂuent was almost 5x faster on the read.

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Consumer

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Kafka Connect • Kafka Connectͱ͸ɺ  पลγεςϜ͔ΒͷσʔλΛऔΓࠐΈ(Source)ɺ  σʔλૹ৴(Sink)ͷೋछྨΛαϙʔτ͢Δػೳ • Amazon SQS΍MongoDBͷσʔλΛKafkaͰऔࠐΉɺ  ϝοηʔδΛͦͷ··Elasticsearch΍RDBMSʹ֨ೲɺ  ͕ߦ͑Δ • Connect͸ࣗ༝ʹ֦ுͯ͠ಠࣗConnectΛ࣮૷Մೳ

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Kafka Connect • γϯϓϧͳέʔεͰ͋Ε͹ɺ  ಛʹ࣮૷͢Δ͜ͱͳ͘QueryΛαϙʔτ • Consumer͸ผΞϓϦέʔγϣϯͱͯ͠  ෼ׂ͢Δͷ΋͍͍Ͱ͠ΐ͏ • ෳࡶͳσʔλΛ࡞੒͢ΔͷͰ͋Ε͹  ConsumerͰσʔλΛ૊Έ߹ΘͤΔ

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Structure Event Publisher Command Query Event Subscriber Application ੹຿͸ಡΈࠐΈͷΈ ੹຿͸Eventૹ৴ͷΈ WebΞϓϦέʔγϣϯ ͔Β੾Γग़͢

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Event Sourcing+ CQRS / Kafka • Command QueryΛ୲౰͢ΔWebΞϓϦέʔγϣϯΛ  γϯϓϧʹ • Event SourcingʹΑͬͯɺΞϓϦέʔγϣϯʹՁ஋Λ௥ Ճ͢Δ͜ͱ͕Ͱ͖Δ(෼ੳͳͲ) • Command QueryͷಉظΛαϙʔτ͠ɺ  ΞϓϦέʔγϣϯʹ߹Θͤͯෛՙ෼ࢄ͕༰қ

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ఆظߋ৽ͤ͞Δόονॲཧͷߟ͑ํ΋มΘΔ

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ྫ

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Example

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Example: Produce Ϣʔβʔͷ࣌ܥྻߦಈϩά͕ QIQSELBGLBܦ༝ͰૹΒΕͯ͘Δ

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Example: Kafka "QBDIF,BGLB "QBDIF;PPLFFQFS QBSUJUJPO ϲ݄͘Β͍Ͱԯ͘Β͍  ΞϓϦέʔγϣϯ΁ͷো֐ɾऔΓ͜΅͠ͳ͠

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Example: Consume σʔλϕʔεΛ݁߹ͯ͠ϏδωεϩδοΫٵऩ QVTI௨஌ࢦࣔͳͲΠϕϯτΛૹ৴ ଞαʔϏε͕SBCCJUNRΛ࢖͍ͬͯΔͨΊ

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Example: Cassandra $BTTBOESB$MVTUFS ԯͪΐͬͱ͘Β͍ 55-͋ΓͷͨΊ ো֐ͳ͠ɾίϯύΫγϣϯఆظ࣮ߦͰ τϥϒϧͳ͠

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Example: Cassandra ͜͜·Ͱ਺NTҎ಺Ͱऴྃ͢ΔͨΊɺ ΄΅ϦΞϧλΠϜͰ൓ө͞ΕΔ

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ଞ • ίϯςϯπͷσʔλΛKafkaܦ༝Ͱऩू͠HDFS֨ೲ  SparkʹΑΔ෼ੳॲཧޙ Cassandra֨ೲ  ΞϓϦέʔγϣϯ͔Β͸Cassandraʹ  γϯϓϧͳΫΤϦΛ౤͛ΔͷΈʹ • Event Sourcing, CQRSͷ૊Έ߹ΘͤʹΑΓ  Ωϟογϡੜ੒΍σʔλ࠷దԽʹΑΓߴ଎Խʹߩݙ 

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Now

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େࡶ೺ͳαϯϓϧ͸ԼهΛࢀর͍ͩ͘͞  https://github.com/ytake/laravel-presto- kafka-demo

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·ͱΊ • େن໛ʹͳΔ͜ͱ͕༧ଌͰ͖ͨΒ  ಋೖʹνϟϨϯδ • ҰͭͷϑϨʔϜϫʔΫ͚ͩͰ΍Ζ͏ͱ͠ͳ͍͜ͱ • ϛυϧ΢ΣΞͷ஌ࣝ͸ඞཁʹ • DDDͷ؍఺͚ͩͰ͸ͳ͘ɺ  ෼ࢄॲཧ΍ෳࡶͳσʔλॲཧͷ  ϦϑΝΫλϦϯάʹ΋׆͖Δύλʔϯ