gRPC e Go um passo antes

Esta apresentação tenta mostrar um pouco da história dos protocolos HTTP e como funciona sobre as camadas de TCP e UDP. Demostrando sua evolução até chegarmos no SPDY, QUIC e HTTP/3.
Fazemos um apanhando no rEST utilizando HTTP/1, HTTP/2 e finalmente mostramos o RPC utilizando TCP e UDP.
Agora aprender gRPC ficou mais fácil, depois de todo este embasamento demostramos o funcionamento do gRPC e como podemos tirar proveito de sua utilização.

Transcript

1. http://s3wf.com
   @jeffotoni
   Meetup Golang Campinas
   Jefferson Otoni
   RPC, gRPC & Go
   

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2. Senior Software Engineer
   Jefferson Otoni Lima
   

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4. @jeffotoni
   Comunidade
   Telegram
   https://t.me/go_br
   https://t.me/go_bh
   https://t.me/golangcwb
   Slack
   https://gophers.slack.com
   (members >~45k)
   GopherCon Brasil 2020
   https://2020.gopherconbr.org
   Wiki Conferencias
   https://github.com/golang/go/wiki/Conferences
   Meetup
   https://www.meetup.com/go-belo-horizonte
   https://www.meetup.com/pt-BR/golangbr
   https://www.meetup.com/pt-BR/Women-Who-Go-Sampa
   https://www.meetup.com/pt-BR/Golang-Campinas/
   https://www.meetup.com/pt-BR/golang-poa/
   https://www.meetup.com/pt-BR/GolangCWB/
   

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5. @jeffotoni
   https://golang.org
   https://golang.org/doc/effective_go.html
   https://golang.org/ref/spec
   https://golang.org/doc
   https://tour.golang.org/welcome/1
   

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6. @jeffotoni
   WEB
   Protocolos
   

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7. @jeffotoni
   HTTP/1.1
   TCP
   TCP
   UDP
   protocolos
   HTTP/2.0
   SPDY
   HTTP/3
   QUIC
   SPDY
   QUIC
   

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8. @jeffotoni
   HTTP Versões
   HTTP/0.9 1991; one method
   HTTP/1.0 1996; headers, caching, languages
   HTTP/1.1 1999; keepalives, upgrades, ranges, hosts
   SPDY 2009; one tcp, gzip headers, flow control
   QUIC 2012; UDP, handshake, baixa latência
   HTTP/2.0 2015; HPACK, priorities, server push
   HTTP/3.0 2019; no head-of-line blocking,TLS 1.3
   

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9. @jeffotoni
   HTTP/3.0
   Um bolo de camada HTTP / 3
   Fonte: https://blog.cloudflare.com/http-3-from-root-to-tip/
   

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10. @jeffotoni
    HTTP/2.0
    . Multiplexing
    . Bidirectional Streaming
    . HTTPS
    . SSL/TLS
    . Token auth
    . Channel credentials
    . Performance
    

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11. @jeffotoni
    HTTP/3.0
    HTTP/2 vs HTTP/3
    Fonte: https://kinsta.com/pt/blog/http3
    

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12. @jeffotoni
    

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13. HTTP/2.0
    $ curl -I -L https://app.guula.com.br
    HTTP/2 200
    server: nginx/1.14.0 (Ubuntu)
    date: Wed, 22 Jul 2020 17:33:15 GMT
    content-type: text/html; charset=utf-8
    vary: Origin
    @jeffotoni
    

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14. HTTP/2.0
    @jeffotoni
    

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15. @jeffotoni
    

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16. @jeffotoni
    HTTP/3.0
    

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17. HTTP/3.0
    

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18. Back-end
    

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19. serviços/protocolos
    @jeffotoni
    RPC
    TCP/UDP/http
    REST
    http
    SOAP
    http
    xml-RPC
    http
    RMI
    tcp
    Representational State Transfer
    Remote Procedure Call
    Simple Object Access Protocol
    Remote Method Invocation
    webSocket
    http/tcp
    comunicação bidirecional por canais
    full-duplex e usa o schema:
    ws:// ou wss://
    

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20. (Representational State Transfer)
    rEST
    

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21. /auth
    POST
    /user
    GET
    /user/{uuid}
    GET
    /user/{uuid}
    DELETE
    /user/{uuid}
    PUT
    1M requests/s
    50k requests/s
    100k requests/s
    60k requests/s
    1k requests/s
    service 1
    service 2
    service 3
    service 4
    service 5
    

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22. @jeffotoni
    Api rEST em Go
    - Endpoints
    - Middleware
    - Instrumentar
    - Dockerfile
    - Deploy
    

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23. Serializion
    

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24. . encoding/json
    . encoding/xml
    . github.com/tinylib/msgp
    . github.com/golang/protobuf
    . github.com/gogo/protobuf
    . Apache/Thrift
    . Apache/Avro
    . gotiny
    . vmihailenco/msgpack/v4
    Alguns tipos de serializações
    

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25. Serializion
    MessagePack
    

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26. @jeffotoni
    Api rEST em Go
    - Endpoints
    - Middleware
    - Instrumentar
    - Dockerfile
    - Deploy
    

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27. /user/{uuid}
    GET
    /user/{uuid}
    PUT
    100k requests/s
    1k requests/s
    service 3
    service 5
    HTTP + JSON
    

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28. service3
    service5
    HTTP
    rEST
    rEST CLIENT
    

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29. RPC
    (Remote Procedure Call)
    procedimentos remotos
    como se fossem chamadas locais
    

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30. (Remote Procedure Call)
    RPC server
    

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31. /user/{uuid}
    GET
    /user/{uuid}
    PUT
    100k requests/s
    1k requests/s
    service 3
    service 5
    RPC
    RPC SERVER
    RPC CLIENT
    

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32. RPC server Go
    - Struct Args
    - Struct User
    - Metodo Get
    @jeffotoni
    

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33. RPC server Go
    - Register
    - Metodos
    - Instrumentar
    - Dockerfile
    - Deploy
    @jeffotoni
    

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34. RPC server Go
    - Register
    - Metodos
    - Instrumentar
    @jeffotoni
    

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35. (Remote Procedure Call)
    RPC client
    

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36. RPC client Go
    - Conexao
    - Args/param
    - Reply/Retorno
    - Dockerfile
    - Deploy
    @jeffotoni
    

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37. Service3
    Service5
    TCP
    RPC
    RPC SERVER
    HTTP
    rEST
    RPC CLIENT
    

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38. nível de modularidade
    microservice
    

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40. gRPC
    

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41. Protocol Buffers
    protobuf-compiler
    

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42. Protocol
    Buffers
    $ protoc --go_out=. produto.proto
    

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44. Metodos
    

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45. Go Marshal
    

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46. Go Unmarshal
    

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47. /user/{uuid}
    GET
    /user/{uuid}
    PUT
    100k requests/s
    1k requests/s
    service 3
    service 5
    gRPC
    gRPC SERVER
    gRPC CLIENT
    

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48. referências
    https://jobs.kenoby.com/engineering
    https://golang.org
    https://grpc.io/docs/tutorials/basic/go
    https://github.com/grpc/grpc-go/tree/master/examples
    https://developers.google.com/protocol-buffers/docs/gotutorial
    https://github.com/uw-labs/bloomrpc (curl ou posltman para grpc)
    https://itnext.io/learning-go-mongodb-crud-with-grpc-98e425aeaae6
    https://encurtador.com.br/fHKSU
    https://encurtador.com.br/eqvJ2
    https://gokit.io/examples/
    https://github.com/smallnest/gosercomp
    https://easyengine.io/tutorials/nginx/configuring-http-2-server-push
    https://www.digitalocean.com/community/tutorials/http-1-1-vs-http-2-what-s-the-difference
    https://medium.com/@factoryhr/http-2-the-difference-between-http-1-1-benefits-and-how-to-use-it-38094fa0e95b
    https://blog.cloudflare.com/how-to-test-http-3-and-quic-with-firefox-nightly/
    https://blog.cloudflare.com/http-3-vs-http-2
    https://kinsta.com/blog/http3
    https://blog.cloudflare.com/http3-the-past-present-and-future
    links
    

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49. Thanks := &Obrigado{...}
    Obrigado...
    github.com/jeffotoni
    instagram.com/jeffotoni
    https://t.me/devopsbh
    https://t.me/go_br
    https://t.me/awsbrasil
    linkedin.com/in/jeffotoni/
    

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