grpc-spring is a Spring Boot starter module for the gRPC framework.
The tool solves the problem of integrating gRPC services into Spring Boot applications by automating server and client configuration. On the server side, it automatically configures and runs the gRPC server with implementations annotated with @GrpcService. On the client side, it automatically creates and manages gRPC channels and stubs using @GrpcClient annotations. The approach eliminates boilerplate configuration by leveraging Spring Boot's auto-configuration patterns.
Teams building microservices with Spring Boot that need gRPC communication should consider this starter. It suits projects already invested in the Spring ecosystem and wanting to add gRPC without manual wiring. The tool integrates with Spring Cloud for service discovery across Consul, Eureka, and Nacos, supports Spring Security for authentication, and includes distributed tracing via Spring Sleuth when the brave-instrumentation-grpc library is present. It also provides automatic metrics collection through Micrometer and Actuator. The project works with standard grpc-java and supports other flavors like Reactive gRPC and grpc-kotlin through custom StubFactory implementations.
Development activity shows consistent engagement with user feedback through an active survey mechanism. The project maintains comprehensive documentation in multiple languages and provides clear version compatibility information across Spring Boot and Spring Cloud releases. Pull requests and issues receive responses indicating active maintenance, and the codebase demonstrates thoughtful design choices around extensibility through interceptor support and pluggable discovery client implementations.
