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Reactive Microservices Architecture @tan_go238

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ࠓ೔࿩͢͜ͱ

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ͬ͘͘͢͟͝Γ࿩͠·͢

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ϚΠΫϩαʔϏεͷίϯηϓτ • খͯ͘͞ • ಠཱͨ͠αʔϏεͰ • ͦΕͧΕ͕ࣗ෼ͷυϝΠϯͷσʔλΛ࣋ͪ • ಠཱͯ͠ • ෼཭͞Ε͍ͯͯ • εέʔϥϒϧ • ͦͯ͠ରো֐ੑ͕͋Δ

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Monolith https://goo.gl/keQyrL

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SOA Microservices Reactive Microservices ↓ ↓

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Reactive Microserviceͱ͸ʁ

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Reactive Manifest • ଈԠੑ • ରো֐ੑ • ஄ྗੑ • ϝοηʔδۦಈ http://www.reactivemanifesto.org/ja

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Reactive Microservice (Failure isolation) Bulkheading (SPOFΛͭ͘Βͳ͍)

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Reactive Microservice (Own your state, Exclusively)

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Reactive Microservice (Event Sourcing, CQRS)

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Reactive Microservice (Asynchronous Message-Passing)

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Reactive Microserviceͱ͸ʁ • ಠཱ͍ͯ͠Δ (DockerΈ͍ͨͳԾ૝Խͱ૊Έ߹Θͤͯߋʹޮ཰Խ) • ରো֐ੑ͕͋Δ • ඇಉظϝοηʔδϯά ଎͍͠ɺམͪͯ΋ଞ΁ͷӨڹ͕গͳ͘ɺ εέʔϥϒϧʹͰ͖ͯΔͷͰ͙͢ճ෮͢Δ

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࣮ࡍͲ͏΍ͬͯ࡞Δͷʁ

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Microservices Come in Systems (Service Discovery) • ͓ޓ͍ͷαʔϏεͷΞυϨεΛ஌͍ͬͯΔඞཁ͕͋Δ • ͦͷ໾໨Λݞ୅ΘΓ͢Δͷ͕ Service Discovery • CAPఆཧͷ CP-Based ͱ AP-Based ͕͋Δ • CP-Based … Zookeeper, etcd • AP-Based … Lightbend Reactive Platform, eureka, Serf

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Microservices Come in Systems (API Gateway) ΫϥΠΞϯτ͔ΒͷϦΫΤετΛड͚औͬͯɺਖ਼͍͠αʔϏε΁౉͢ ྫ) Netflix API, Amazon API Gateway

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Microservices Come in Systems (Managing Communication Patterns) • ίϛϡχέʔγϣϯύλʔϯ΋ෳࡶʹͳͬͯ͘Δ • Publish-Subscribe ύλʔϯΛ࢖͏ • Subscriber͸ҎԼͷϥΠϒϥϦ͔ΒσʔλΛऔಘ͢Δ • Kafka, Amazon Kinesis, Cassandra, Riak • ·ͩෆे෼ • σʔλετϦʔϜ … Akka Stream, Apache Camel

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Microservices Come in Systems (Back-pressure) • Publish-Subscribe ͷΑ͏ͳύλʔϯͰ͸ Pub ͷॲཧ͕଎ ͗ͯ͢ Sub ͷॲཧ͕௥͍͔ͭͳ͍͜ͱ͕͋Δ • Subscriber͕ࣗ෼͕ॲཧͰ͖ΔྔΛPublisherʹϦΫΤε τΛૹΔ͜ͱͰແବͳ͘Subscriber͕ॲཧͰ͖ΔྔΛॲ ཧ͢Δ࢓૊Έ • Akka Stream, RxJava, Spark Streaming, Cassandra drivers

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Microservices Come in Systems (Circuit Breaker pattern) • ϦϞʔτΞΫηεͷ੒ޭʗࣦഊΛΧ΢ϯτ͠ɺ Τϥʔ ཰ (failure rate) ͕ᮢ஋Λ௒͑ͨͱ͖ʹࣗಈతʹΞΫη εΛःஅ͢Δ࢓૊Έ • Netflix Hystrix, Akka (akka.pattern.CircuitBreaker)

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Microservices Come in Systems (Event-Driven Architecture) • σʔλͷมߋ͸͙͢ଞͷαʔϏε͔Β΋ར༻Ͱ͖ͳ͍ͱ͍͚ͳ͍ • Event Sourcing, CQRS • Command … ෭࡞༻͕͋Δૢ࡞ • Event … Կ͔͕ىͬͨ͜ͱ͍͏ϩά (ࣄ࣮) • Event Logging and Event Streaming Product • Riak, RedBull Eventuate

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Microservices Come in Systems (SAGA pattern) • ෼ࢄγεςϜͰͷτϥϯβΫγϣϯ (Process Manager)

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Summery • Reactive Microservice ʹ͢Δʹ͸ • ҎԼͷಛੑʹݻࣥ͢Δ • ෼཭͢Δ͜ͱ • ̍αʔϏεʹ͖ͭ̍ͭͷ੹೚ͷΈ • ഉଞతͳঢ়ଶʹ͢Δ • ඇಉظϝοηʔδύογϯά • ػಈੑ͕͋Δ (Mobility) • ߋʹҎԼͷΑ͏ͳಛੑΛซͤ࣋ͭ • αʔϏεಉ࢜ڠௐͯ͠ಈ࡞͢Δ • ͦͷαʔϏε͚ͩͰ׬݁͢Δ

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͋Γ͕ͱ͏͍͟͝·ͨ͠ʂ