Testing and Developing gRPC APIs

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Testing and
Developing
gRPC APIs

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A little bit about You
gRPC Overview
Resources
Q&A
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Agenda

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A little about you
● How familiar are you with gRPC?
○ No experience
○ Have researched it a bit
○ Use it on personal projects
○ Use it on work projects
● Do you consider yourself…
○ A developer
○ A tester
○ DevOps
○ Management
○ Other
● How long have you been using
Postman?
○ New, or less than 6 months
○ 6 months to 1 year
○ 1 year to 3 years
○ 3 years or more

6. What is gRPC? And
where did it come
from?
OVERVIEW
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7. Aggregated
anonymous data
from 40,000
respondents.
2023
POSTMAN STATE OF THE API
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8. @petuniaGray
API Technologies
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9. A Brief History of Web APIs

10. A Brief History of Web APIs

11. Google
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12. Organizations that have
adopted gRPC
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13. gRPC concepts
● Remote procedure calls
gRPC framework allows a client to execute a
“remote” (server-based) instruction as though it
were part of the local system.
● Supported method types
Unary, client streaming, server streaming,
bidirectional streaming
● Protocol buffers (protobuf)
Language-agnostic, platform-agnostic mechanism
for encoding structured data
● .proto file
Strongly-typed schema definition
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14. Protocol buffers
gRPC uses Protocol Buffers for serializing structured data
● .proto file
Defines the service interface and the message types that
the service methods accept and return
● Services
Defines gRPC services with RPC method parameters and
return types specified as protocol buffer messages
● Messages
Protocol buffer data is structured as messages, where
each message is a small logical record of information
containing a series of name-value pairs called fields.
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16. “gRPC is roughly 7 times
faster than REST when
receiving data & roughly
10 times faster than REST
when sending data for
this specific payload.
Ruwan Fernando
Software Architect
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18. Let’s get started
go.pstmn.io/intergalactic-grpc-workspace
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https://academy.postman.com/grpc-and-postman
gRPC and Postman

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Additional Resources

21. Q&A
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