Files
gstack/review/specialists/performance.md
T
Garry Tan a4a181ca92 feat: Review Army — parallel specialist reviewers for /review (v0.14.3.0) (#692)
* feat: extend gstack-diff-scope with SCOPE_MIGRATIONS, SCOPE_API, SCOPE_AUTH

Three new scope signals for Review Army specialist activation:
- SCOPE_MIGRATIONS: db/migrate/, prisma/migrations/, alembic/, *.sql
- SCOPE_API: *controller*, *route*, *endpoint*, *.graphql, openapi.*
- SCOPE_AUTH: *auth*, *session*, *jwt*, *oauth*, *permission*, *role*

* feat: add 7 specialist checklist files for Review Army

- testing.md (always-on): coverage gaps, flaky patterns, security enforcement
- maintainability.md (always-on): dead code, DRY, stale comments
- security.md (conditional): OWASP deep analysis, auth bypass, injection
- performance.md (conditional): N+1 queries, bundle impact, complexity
- data-migration.md (conditional): reversibility, lock duration, backfill
- api-contract.md (conditional): breaking changes, versioning, error format
- red-team.md (conditional): adversarial analysis, cross-cutting concerns

All use standard header with JSON output schema and NO FINDINGS fallback.

* feat: Review Army resolver — parallel specialist dispatch + merge

New resolver in review-army.ts generates template prose for:
- Stack detection and specialist selection
- Parallel Agent tool dispatch with learning-informed prompts
- JSON finding collection, fingerprint dedup, consensus highlighting
- PR quality score computation
- Red Team conditional dispatch

Registered as REVIEW_ARMY in resolvers/index.ts.

* refactor: restructure /review template for Review Army

- Replace Steps 4-4.75 with CRITICAL pass + {{REVIEW_ARMY}}
- Remove {{DESIGN_REVIEW_LITE}} and {{TEST_COVERAGE_AUDIT_REVIEW}}
  (subsumed into Design and Testing specialists respectively)
- Extract specialist-covered categories from checklist.md
- Keep CRITICAL + uncovered INFORMATIONAL in main agent pass

* test: Review Army — 14 diff-scope tests + 7 E2E tests

- test/diff-scope.test.ts: 14 tests for all 9 scope signals
- test/skill-e2e-review-army.test.ts: 7 E2E tests
  Gate: migration safety, N+1 detection, delivery audit,
        quality score, JSON findings
  Periodic: red team, consensus
- Updated gen-skill-docs tests for new review structure
- Added touchfile entries and tier classifications

* docs: update SELF_LEARNING_V0.md with Release 2 status + Release 2.5

Mark Release 2 (Review Army) as in-progress. Add Release 2.5 for
deferred expansions (E1 adaptive gating, E3 test stubs, E5 cross-review
dedup, E7 specialist tracking).

* chore: bump version and changelog (v0.14.3.0)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>
2026-03-30 22:07:50 -06:00

2.5 KiB

Performance Specialist Review Checklist

Scope: When SCOPE_BACKEND=true OR SCOPE_FRONTEND=true Output: JSON objects, one finding per line. Schema: {"severity":"CRITICAL|INFORMATIONAL","confidence":N,"path":"file","line":N,"category":"performance","summary":"...","fix":"...","fingerprint":"path:line:performance","specialist":"performance"} If no findings: output NO FINDINGS and nothing else.


Categories

N+1 Queries

  • ActiveRecord/ORM associations traversed in loops without eager loading (.includes, joinedload, include)
  • Database queries inside iteration blocks (each, map, forEach) that could be batched
  • Nested serializers that trigger lazy-loaded associations
  • GraphQL resolvers that query per-field instead of batching (check for DataLoader usage)

Missing Database Indexes

  • New WHERE clauses on columns without indexes (check migration files or schema)
  • New ORDER BY on non-indexed columns
  • Composite queries (WHERE a AND b) without composite indexes
  • Foreign key columns added without indexes

Algorithmic Complexity

  • O(n^2) or worse patterns: nested loops over collections, Array.find inside Array.map
  • Repeated linear searches that could use a hash/map/set lookup
  • String concatenation in loops (use join or StringBuilder)
  • Sorting or filtering large collections multiple times when once would suffice

Bundle Size Impact (Frontend)

  • New production dependencies that are known-heavy (moment.js, lodash full, jquery)
  • Barrel imports (import from 'library') instead of deep imports (import from 'library/specific')
  • Large static assets (images, fonts) committed without optimization
  • Missing code splitting for route-level chunks

Rendering Performance (Frontend)

  • Fetch waterfalls: sequential API calls that could be parallel (Promise.all)
  • Unnecessary re-renders from unstable references (new objects/arrays in render)
  • Missing React.memo, useMemo, or useCallback on expensive computations
  • Layout thrashing from reading then writing DOM properties in loops
  • Missing loading="lazy" on below-fold images

Missing Pagination

  • List endpoints that return unbounded results (no LIMIT, no pagination params)
  • Database queries without LIMIT that grow with data volume
  • API responses that embed full nested objects instead of IDs with expansion

Blocking in Async Contexts

  • Synchronous I/O (file reads, subprocess, HTTP requests) inside async functions
  • time.sleep() / Thread.sleep() inside event-loop-based handlers
  • CPU-intensive computation blocking the main thread without worker offload