golang-grpc

Structure Go gRPC services by domain and version, using wrapper request and response messages to maintain clean API evolution. This approach keeps generated protobuf code maintainable and prevents backward compatibility issues across microservice deployments.

Handle gRPC errors by returning specific status codes from server implementations rather than generic errors. Apply precise status codes during client calls and interceptors to ensure correct transport-layer reliability and observability across microservice boundaries.

Test gRPC streaming RPCs and interceptors in Go using bufconn for in-memory verification. This approach validates handler behavior, checks status codes precisely, and supports realistic testing without allocating actual network ports during test execution.

Implement graceful shutdown for Go gRPC servers by calling graceful stop with a timeout fallback mechanism. This ensures active streaming RPCs complete processing while preventing indefinite hangs during microservice deployment cycles or container restarts.

You can use interceptors and TLS for production-ready Go gRPC client connections by enforcing connection reuse with deadlines. Apply TLS or mTLS for transport security and configure load balancing to maintain reliable microservice communication.

You need health checks to verify deployment readiness and Unimplemented server embedding to satisfy gRPC interface compliance. Registering health checks ensures orchestration platforms route traffic correctly, while embedding Unimplemented provides forward compatibility for proto evolution.