🔧 Go Microservices & Tooling

• Makefile / Taskfile; golangci-lint; govulncheck; go generate
• Multi-stage Docker builds → distroless/scratch images (~15 MB)
• gRPC interceptors: auth, logging, tracing, retries; deadlines propagation
• Kafka consumer group patterns with franz-go; batch processing; manual commits after processing
• Circuit breaker (sony/gobreaker), retries with backoff (cenkalti/backoff), singleflight, rate limiting (x/time/rate)
• Feature flags (OpenFeature Go SDK)
• Temporal Go SDK (durable workflows) ⭐
• Writing a Kubernetes operator/controller with kubebuilder (advanced; very valued in platform teams)
• CLI tools with cobra (many infra tools are Go CLIs)

Why Go matters in 2026

Kubernetes, Docker, etcd, Prometheus, Terraform, Envoy’s control planes, and most cloud-native tooling are written in Go. Being strong in Go opens platform/infra/SRE roles as well as backend ones.

🧪 Labs (🟢 warm-up → 🟡 core → 🔴 hard → ⚫ boss)

• 🟡 gRPC interceptors: auth, logging, tracing, deadline propagation
• 🔴 franz-go consumer with manual commits after processing + batching
• 🔴 kubebuilder operator OrbitWorkerPool (W15)
• ⚫ An Envoy ext_authz gRPC server (W16); a go-control-plane xDS server (open)

🧠 Cognitive tasks

• Code archaeology: read net/http/server.go Serve + conn.serve

🛰️ Orbit integration

• Every Go service’s build, lint, and vuln scan in CI

Go deeper

⚙️ Go Runtime Internals · Kubernetes Internals