Golang Patterns

Purpose

Implement Go concurrency, error handling, and HTTP server patterns correctly. Every goroutine has a stop condition. Every error is wrapped. Every server shuts down gracefully.

Agent Protocol

Trigger

Exact user phrases: "Go goroutine", "Go concurrency", "Go channel", "Go error handling", "Go HTTP", "Go middleware", "Go context", "Go worker pool", "Go mutex", "Go select", "Go graceful shutdown".

Input Context

Before activating, verify:

• The pattern being implemented is known (worker pool, graceful shutdown, fan-out, etc.).
• go.mod exists.

Output Artifact

No file output. Produces code examples as text.