Go Performance

This skill is about measurement-first optimization in Go.

When to activate

Use this skill when you need to:

• Confirm a performance regression (latency/throughput/CPU/memory)
• Identify hot paths with pprof (CPU / heap / mutex / block)
• Reduce allocations and GC pressure in a measured hotspot
• Fix contention (mutex, scheduler, channel backpressure)
• Validate improvements with benchmarks and repeatable runs

If you need general idioms and patterns (not measurement), use golang-patterns.

Rules of engagement