gRPC with Node.js

Transcript

1. gRPC with Node.js
   maybe it's time to put ReST to rest
   

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2. blog.lsantos.dev
   cloud advocate_
   who am I_
   ludossan@microsoft.com
   

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3. What is gRPC?
   

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4. gRPC
   - Developed by Google in 2015
   - Uses HTTP/2 for transport
   - RPC stands for "remote
   procedure call"
   - Directly calls a method on the
   server as if it were a local
   object
   - Uses protobuf as IDL
   - Interoperable among
   languages
   

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6. RPC is NOT new
   

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7. JRMI - Java Remote Method Invocation
   Client
   Remote object Interface
   Stub
   Remote Object
   Implementation
   Remote object Interface
   Skeleton
   Client Server
   Implemented
   by the
   developer
   Implemented
   by JRMI
   

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8. Protocol Buffers
   protobuf for the bffs <3
   

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9. protobuf
   - OSS, Developed by Google
   - Mechanism for serializing
   structured data
   - Interface Definition Language
   - Requires compiling
   

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10. message.proto
    

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11. Compile time!
    

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12. Outfile
    

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13. message_pb.js
    

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14. Generated Methods
    

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15. Then we can just use
    

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16. gRPC !=
    Protobuf
    

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17. Protobuf is universal_
    

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19. gRPC is based on services_
    

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20. Defining a service
    

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21. Defining a service
    

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22. Types of methods_
    

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23. Unary
    

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24. Server Streaming
    

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25. Client Streaming
    

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26. Bidirectional
    

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27. Building the server
    with NodeJS
    

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28. Install grpc
    

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29. One small change
    

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30. Load the protofile
    

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31. Load the protofile
    "Database"
    

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32. Implement the functions on the serverside
    

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33. Implement the functions on the serverside
    

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34. Start the server
    

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35. Full code
    

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36. Full code
    load
    

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37. Full code
    load
    database
    

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38. Full code
    load
    database
    implementation
    

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39. Full code
    load
    database
    implementation
    run
    

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40. Creating the client
    

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41. Install grpc
    

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42. Load the protofile
    

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43. Add the service
    

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44. Call it!
    

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45. Full Code
    

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46. DEMO
    

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47. Problems
    - Docs are not very common
    - The initial development is
    more complex
    - Usage with TypeScript
    requires some work
    - It is a bit complicated to
    understand the idea and
    concepts
    

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48. Advantages
    of gRPC
    - Way smaller due to binary
    transfer
    - HTTP/2 by default
    - Simple client calls
    - Lighter and supports a lot of
    calls
    - Supports streaming both in
    client and server
    - Protobuf standardizes the
    message exchange
    

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49. Comparison
    

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50. refs_
    - https://en.wikipedia.org/wiki/Remote_procedure_call
    - https://grpc.io/docs/what-is-grpc/introduction/
    - https://developers.google.com/protocol-buffers
    - https://developers.google.com/protocol-buffers/docs/reference/javascript-generated
    - https://medium.com/xp-inc/introdu%C3%A7%C3%A3o-ao-grpc-com-node-js-98f6a4ede11
    - https://grpc.io/docs/what-is-grpc/core-concepts/
    - https://blog.logrocket.com/creating-a-crud-api-with-node-express-and-grpc/
    - https://github.com/khaosdoctor/grpc-nodejs-demo-app
    

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51. /khaosdoctor @_staticvoid
    lsantos.dev
    /khaosdoctor
    thank you_
    

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