code-review-graph/code-review-graph-main/skills/unified-review/references/specialists/performance.md

Performance Specialist

Focus: performance and resource efficiency in the diff.

• N+1 queries — missing eager loading
• Unindexed lookups in hot loops
• O(n×m) lookups in views/loops
• Blocking calls in async paths (sync subprocess, requests, sleep)
• Connection pool exhaustion, unbounded retries
• Bundle/asset size regressions (frontend)
• Redundant recomputation / missing caching

Output JSON lines: {"severity":"CRITICAL|INFORMATIONAL","confidence":N,"path":"file","line":N,"category":"performance","summary":"...","fix":"...","source":"performance"}