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ͳͥ Go ϚΠΫϩαʔϏεͷͨΊͷݴޠͳͷ͔
Kohei Kimura
Software Engineer at Nulab Inc.
@cohhei
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☝ࠓҰ൪ݴ͍͍ͨ͜ͱ☝
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εϙϯαʔηογϣϯͰ
͋Γ·ͤΜ
※ͪΌΜͱϓϩϙʔβϧॻ͖·ͨ͠ɻ΄Ίͯɻ
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SIerɺࠃΫϥυϕϯμʔΛܦͯ20181݄ Nulab ೖࣾ
Cacoo νʔϜͷόοΫΤϯυΤϯδχΞ
։ൃݴޠ ΄΅ ≡, ·Εʹ Java, Node.js
ొஃ࣮
Kubernetes Meetup Tokyo #14
CloudNative Days Fukuoka 2019
AWS Summit Osaka
Kohei Kimura
@cohhei
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ΫϥυωΠςΟϒͬͯ·͔͢ʁ
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ΫϥυωΠςΟϒͱ
εέʔϥϒϧͳΞϓϦέʔγϣϯΛߏங͓Αͼ࣮ߦ͢ΔͨΊͷٕज़ͷ૯শ
දతͳٕज़: ίϯςφɺαʔϏεϝογϡɺϚΠΫϩαʔϏεɺ
ΠϛϡʔλϒϧΠϯϑϥετϥΫνϟɺએݴܕAPI
ճ෮ੑʢresilientʣɺཧ͢͠͞ʢmanageableʣɺՄ؍ଌੑ
ʢobservableʣ͕ಘΒΕΔ
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ίϯςφɺCI/CDɺΦʔέετϨʔ
γϣϯ…
͑ɺαʔϏεϓϩΩγɾϝογϡɾ
σΟεΧόϦʔͰͬͱʁ
ಓͷΓ͍…
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ΫϥυωΠςΟϒপ
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https://www.youtube.com/watch?v=1qVj1vXbuX0
ෳࡶɺ
ॲཧͷݪ࢝ੑɺҰ؏ੑͷ͠͞
ཧίετͷ૿େ
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ࠓͷɿ ͍͍ͧ
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Go ͕ Google Ͱੜ·ΕͨܦҢ
ແͷϋʔυΣΞɺແͷιϑτΣΞ
Լ͕Γଓ͚Δ։ൃޮʹର߅͢Δ
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"Go was designed by and for people who write
—and read and debug and maintain—large
software systems."
Rob Pike, Go at Google
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ͳͥ Go ϚΠΫϩαʔϏεͷͨΊͷݴޠͳͷ͔
https://blog.docker.com/2019/02/weve-got-❤%EF%B8%8F-for-our-first-batch-of-dockercon-speakers/
ཧ༝: ΫϥυωΠςΟϒͱͷ
૬ੑ͕ʮΓΑ͔ʯ
γϯάϧόΠφϦɺߴͳϏϧυɺলϝϞϦ
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Docker and Go
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FROM golang:1.7.3
WORKDIR /go/src/github.com/alexellis/href-counter/
RUN go get -d -v golang.org/x/net/html
COPY app.go .
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
FROM alpine:latest
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=0 /go/src/github.com/alexellis/href-counter/app .
CMD ["./app"]
ΈΜͳ͍͖ͩ͢
multi-stage builds
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FROM golang:1.7.3
WORKDIR /go/src/github.com/alexellis/href-counter/
RUN go get -d -v golang.org/x/net/html
COPY app.go .
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
FROM alpine:latest
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=0 /go/src/github.com/alexellis/href-counter/app .
CMD ["./app"]
ΈΜͳ͍͖ͩ͢
multi-stage builds
Ϗϧυ༻ͷεςʔδ
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FROM golang:1.7.3
WORKDIR /go/src/github.com/alexellis/href-counter/
RUN go get -d -v golang.org/x/net/html
COPY app.go .
RUN CGO_ENABLED=0 GOOS=linux go build -a -installsuffix cgo -o app .
FROM alpine:latest
RUN apk --no-cache add ca-certificates
WORKDIR /root/
COPY --from=0 /go/src/github.com/alexellis/href-counter/app .
CMD ["./app"]
ΈΜͳ͍͖ͩ͢
multi-stage builds
࣮ߦ༻ͷεςʔδ
Go Πϯετʔϧ͞Ε͍ͯͳ͍
Ϗϧυ༻ͷεςʔδ͔Β
ϑΝΠϧΛίϐʔ
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Observability and Go
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Clients
Server Side
ࡶͳ Microservices
Ͳ͜ͰԿ͕͓͖ͯΔ͔
Θ͔Βͳ͍
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Observability
Metrics
Trasing Logging
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Ұ൪͡Ίʹ͖ͯΔ͎ʙʂ
(” ՞ਊ ՞)”řŐŖŘ!!
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https://zipkin.apache.org
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Observability
Metrics
Trasing Logging
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No content
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https://prometheus.io/
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(” ՞ਊ ՞)”řŐŖŘ!!
https://prometheus.io/
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https://prometheus.io/docs/guides/go-application/
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ʢΞϓϦଆʣಋೖ͕؆୯
Έ͕Ͱ͖ΕՃɾߋ৽ൺֱత؆୯
πʔϧΛऔΓೖΕΔ͜ͱͰϕετϓϥΫςΟεΛ
ͱΓ͜Ή
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gRPC and Go
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ΦʔϓϯιʔεͷRPCϑϨʔϜϫʔΫ
RPC = Remote Procedure Call
ΠϯλʔϑΣʔεΛ Protocol Buffers Ͱࣗಈੜ
ҟͳΔݴޠͰ༻Մೳ
HTTP/2
ํετϦʔϛϯά
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Protocol Buffers Ͱఆٛ
→ ίʔυੜΛ࣮ߦ
→ ΫϥΠΞϯτͱαʔόʔͷΠϯλʔ
ϑΣʔεɺܕͷίʔυ͕ੜ
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ৄ͘͠ @vvvatanabe ʹฉ͍͍ͯͩ͘͞
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ʹ͓͚Δ Proto ϑΝΠϧͱੜͨ͠ίʔυͷཧ
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Protofiles
Git repositories
Generated code
Generate
Webhook
git push origin develop/
beta/master
Protocol Buffers ϑΝΠϧ୯ҰͷϦϙδτϦͰཧ
ϑΝΠϧ͕ߋ৽͞ΕΔͱ
→ Jenkins ্Ͱ Java ͱ Go ͷίʔυੜ
→ ଞϓϩδΣΫτ dep ensure ͳͲͰऔಘ
Protofilesͱੜ͞ΕͨίʔυͷϒϥϯνҰக
Other applications
Generated code
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·ͱΊ
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͍͍ͧ
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͍͍ͧ
͍͞͝ʹ
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Diagram
ΦϯϥΠϯ௨͠ͳ͕Βڞಉฤू
ͦͷͰࢿྉ࡞
ը໘ڞ༗ෆཁ
ݴޠͰΘΓʹ͍͘͜ͱਤͰઆ໌
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͝ਗ਼ௌ͋Γ͕ͱ͏͍͟͝·ͨ͠ɻ
ݟ͔͚ͨΒ͔͚͍ͯͩ͘͞ɻ
Kohei Kimura
Software Engineer at Nulab Inc.
@cohhei