Go Performance Patterns

Resource Routing

• scripts/bench-compare.sh - Run when comparing benchmark results, saving baselines, or producing JSON benchmark metadata.
• references/BENCHMARKS.md - Read when writing benchmarks, using benchstat, or profiling with pprof.
• references/STRING-OPTIMIZATION.md - Read when optimizing string conversion, concatenation, or byte/string boundaries.

Performance-specific guidelines apply only to the hot path. Don't prematurely optimize—focus these patterns where they matter most.

Prefer strconv over fmt

When converting primitives to/from strings, strconv is faster than fmt:

s := strconv.Itoa(rand.Int()) // ~2x faster than fmt.Sprint()