Backend Go Skill

Core Principles

• Context propagation: Pass ctx context.Context as first arg to every I/O function.
• Error wrapping: fmt.Errorf("operation: %w", err) preserves the chain for errors.Is.
• No goroutine leaks: Every goroutine must have a way to exit (context, channel close).
• Composition over inheritance: Struct embedding, interfaces for polymorphism.
• Return errors, don't panic: Panics are for programmer errors, not runtime conditions.

References

• references/http-patterns.md — net/http, Chi/Gin/Echo, middleware, graceful shutdown
• references/concurrency-patterns.md — Goroutines, channels, errgroup, worker pools, fan-out/fan-in
• references/database-patterns.md — database/sql, sqlx, pgx, connection pooling, migrations
• references/project-structure.md — Flat vs layered, internal/, cmd/, pkg/

Scripts

• scripts/detect-go-stack.sh — Reads go.mod to identify framework, ORM, dependencies