gRPC Golang (gRPC-Go)

Overview

Comprehensive guide for designing and implementing production-grade gRPC services in Go. Covers contract standardization with Buf, transport layer security via mTLS, and deep observability with OpenTelemetry interceptors.

Use this skill when

• Designing microservices communication with gRPC in Go.
• Building high-performance internal APIs using Protobuf.
• Implementing streaming workloads (unidirectional or bidirectional).
• Standardizing API contracts using Protobuf and Buf.
• Configuring mTLS for service-to-service authentication.

Do not use this skill when

• Building pure REST/HTTP public APIs without gRPC requirements.
• Modifying legacy .proto files without the ability to introduce a new API version (e.g., api.v2) or ensure backward compatibility.
• Managing service mesh traffic routing (e.g., Istio/Linkerd), which is outside the application code scope.