Go Performance

Focuses on hot path optimizations for Go code with specific, measurable patterns. Covers the common wins like using strconv over fmt for conversions (2x faster), preallocating slice capacity (12x faster in benchmarks), and picking the right string concatenation strategy. Includes a benchmark comparison script and references detailed guides on string optimization and profiling. The advice is grounded in real numbers from Uber and Google style guides, which keeps it honest. Worth noting it explicitly excludes concurrency patterns, so you'll need the separate go-concurrency skill for sync.Pool or goroutine optimization. Best when you're actually profiling and need to know which optimizations matter versus cargo cult performance tweaks.

Install to Claude Code

npx -y skills add cxuu/golang-skills --skill go-performance --agent claude-code