Introduction for GRPC

1. GRPC 101
by Alex Van Boxel (@alexvb)

2. Alex Van Boxel
Software Architect @ Vente-Exclusive.com
Google Cloud Developer Expert

3. http://www.grpc.io/
Agenda
GRPC introduction
GRPC demo
GRPC deep dive

4. Remember RPC

5. History: Cobra
Spec # pages
Part 1: CORBA Interfaces 532
Part 2: CORBA Interoperability 236
Part 3: CORBA Component Model 380

6. History: DCOM
Oh, my... If you think COM is scary...
D-COM

7. History: RMI
Quite OK... but interop?!

8. History: SOAP
Interop, but XML
Sooo, slow
WS-* (dead-star)

9. REST
Resource Oriented
JSON over REST
Successful model

10. So why RPC again?!

11. Microservices

12. GRPC Remote Procedure
Call

13. GRPC
@google everything build with RPC
Comes from 4 generations of RPC
Stubby 1,2,3
10^10 RPC calls per second
Google and Square

14. Simple
Performant and Scalable
Interoperable and Extensible

15. Protobuffer 3
IDL
HTTP/2

16. Protocol Buffer
Structured representation of Data
IDL: Interface Defenition Language
Binary format
Well-Know Types

17. Proto: Code Generation

18. Proto: Languages
Java, C++, Node.JS, Ruby, Python, ObjectiveC, Go, PHP

19. Proto: Messages
syntax = "proto3";
message SearchRequest {
string query = 1;
int32 page_number = 2;
int32 result_per_page = 3;
}

20. Proto: Services
service SearchService {
rpc Search (SearchRequest) returns (SearchResponse);
}

21. Proto: Options
package grpc.health.v1;
option csharp_namespace = "Grpc.Health.V1";
option java_multiple_files = true;
option java_package = "io.grpc.health.v1";
option java_outer_classname = "HealthProto";

22. HTTP/2

23. HTTP/2
Binary
Multiplexing

24. HTTP/1 vs HTTP/2

26. HTTP/2
Binary
Multiplexing
Secure

27. HTTP/1 TLS keys

28. HTTP/2
Binary
Multiplexing
Secure
Streaming

29. HTTP/2: Streaming
Server Side Streaming
Client Side Streaming
Bi-Directional Streaminf

30. Standard Errors
GRPC_STATUS_CANCELLED Client application
cancelled the
request
GRPC_STATUS_DEADLINE_EXCEEDED Deadline expired
before server
returned status
GRPC_STATUS_RESOURCE_EXHAUSTED Flow-control
resource limits
reached
GRPC_STATUS_UNAUTHENTICATED Unauthenticated:
credentials failed
to get metadata

31. GRPC_STATUS_CANCELLED Client application
cancelled the
request
...

32. HTTP not to be confused...
Semantics, no it's not REST
You won't nd the GET/POST/DELETE/PATCH
Not everything is a resource

33. Code session

34. Gravity RPC

35. GRPC: Unique Features

36. Extensible
From the ground up

37. Extensible

38. Binding through Context

39. Context

40. Deadlines

41. Cancel

42. Versioning Strategies

43. Versioning
message Blip {
google.protobuf.Timestamp timestamp = 1;
BlipType blip_type = 2;
Coordinate coordinate = 3;
Planet planet = 4;
Missle missle = 5;
}
Proto message elds are tagged

44. Versioning
message Blip {
google.protobuf.Timestamp timestamp = 1;
BlipType blip_type = 2;
Coordinate coordinate = 3;
Planet planet = 4;
Missle missle = 5;
Base base = 6;
}
Extend messages by adding unique tags

45. Versioning
message Blip {
google.protobuf.Timestamp timestamp = 1;
BlipType blip_type = 2;
Coordinate coordinate = 3;
Planet planet = 4;
Base base = 6;
reserved 5;
reserved "missle"
}
Reserve eld names and tags for deprecation

46. Versioning
package grpc.health.v1;
option csharp_namespace = "Grpc.Health.V1";
option java_multiple_files = true;
option java_package = "io.grpc.health.v1";
option java_outer_classname = "HealthProto";
Using package names to introduce big changes

47. First Class Microservice Protocol
Simple
Performant and Scalable
Interoperable and Extensible
Language Support

48. http://www.grpc.io/
Q & A
GRPC 101
by Alex Van Boxel(@alexvb)