Performance Tuning

Areas to consider

• Database
  • Index hot paths; avoid N+1 via prefetch or projections.
  • Tune connection pool sizes and timeouts.
• Runtime
  • Enable release builds; use jemalloc (if beneficial) and proper RUST_LOG.
  • Profile projector throughput; keep handlers CPU-bound and idempotent.
• GraphQL
  • Limit query depth/complexity; paginate aggressively; cache safe queries.
• Admin UI
  • Use React Query caching; window-virtualize large lists; debounce inputs.

Benchmarks

• Measure P50/P95/P99 for mutation→projection latency.
• Replay rate (ev/min) and read-model rebuild time.
• Memory footprint under sustained write load.

See also

• Vision → Metrics and SLOs: /vision