gRPC [Golang] Master Class Build Modern API and Microservices - gRPC Reflection & Evans CLI

The video tutorial introduces gRPC reflection, explaining its importance in development for discovering available APIs without predefined profiles. It guides through implementing reflection in a gRPC server using Go, and demonstrates using the Evans CLI to interact with the server. The tutorial covers installing Evans, using it to explore services, and making RPC calls, highlighting the benefits of reflection in simplifying client-server interactions.

What is one of the main benefits of using gRPC reflection during development?

• It allows clients to discover available APIs without a predefined profile.

• It automatically generates client code for all available APIs.

• It provides a graphical interface for API testing.

• It ensures all API endpoints are secure by default.

Which dependency is required to enable gRPC reflection in a Go project?

• golang.org/x/net/context

• github.com/golang/protobuf/proto

• github.com/grpc/grpc-go

• golang.googlegolang.org/grpc/reflection

What is the primary function of the Evans CLI tool?

• To generate documentation for gRPC services.

• To compile Go code for gRPC servers.

• To monitor network traffic between gRPC clients and servers.

• To provide a command line interface for interacting with gRPC servers using reflection.

Which command in Evans CLI is used to list all available services on a gRPC server?

• show package

• show service

• describe services

• list services

How does Evans CLI handle client streaming RPCs?

• It requires a separate configuration file for streaming.

• It continuously prompts for input until a shutdown signal is sent.

• It sends a single request and waits for a response.

• It automatically sends a predefined set of requests.

What happens when you call the square root RPC with a negative number using Evans CLI?

• It logs the error and continues execution.

• It returns a zero value.

• It throws an RPC error with invalid arguments.

• It calculates the square root of the absolute value.

Which feature of Evans CLI allows it to interact with gRPC servers without predefined client code?

• Network traffic analysis

• Auto-completion

• gRPC reflection support

• Built-in API documentation