Files
archivmail/docs/production/performance.md
T
“alexvisualmakers” 600552c858 feat: Migrate from agent markdown files to Skills, Rules, and Sub-Agents
Replace the manual "read .claude/agents/*.md" workflow with native
Claude Code features for a more efficient, scalable development experience:

- **Skills** (.claude/skills/): 7 auto-discovered slash commands
  (/requirements, /architecture, /frontend, /backend, /qa, /deploy, /help)
  with forked sub-agents for heavy tasks and inline execution for interactive ones
- **Rules** (.claude/rules/): 4 modular rule files (general, frontend, backend,
  security) auto-applied based on file context
- **Sub-Agents** (.claude/agents/): Lightweight configs for frontend-dev,
  backend-dev, and qa-engineer with model, tool, and turn limit settings
- **Context Engineering**: Layered context loading, context isolation via
  forked skills, built-in context recovery after compaction, and
  "always read, never guess" rules to prevent hallucinated code references
- **CLAUDE.md**: Auto-loaded project context replacing PROJECT_CONTEXT.md
- **Feature tracking**: features/INDEX.md as persistent state across sessions
- **Production guides**: docs/production/ for error tracking, security,
  performance, database optimization, and rate limiting
- **Init Mode**: /requirements detects empty PRD and bootstraps full project
  setup (PRD + all feature specs) from a single project description

Removed: 6 monolithic agent files, PROJECT_CONTEXT.md, HOW_TO_USE_AGENTS.md,
TEMPLATE_CHANGELOG.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-13 10:15:27 +01:00

68 lines
1.8 KiB
Markdown

# Performance Monitoring
## Lighthouse Check (after every deployment)
1. Open Chrome DevTools (F12)
2. Go to Lighthouse tab
3. Select: Performance, Accessibility, Best Practices, SEO
4. Generate Report for both Mobile and Desktop
5. **Target: Score > 90** in all categories
## Common Performance Issues
### Unoptimized Images
```tsx
// Bad - unoptimized, no lazy loading
<img src="/large-image.jpg" />
// Good - Next.js Image component
import Image from 'next/image'
<Image src="/large-image.jpg" width={800} height={600} alt="Description" />
```
Next.js Image automatically: resizes, lazy-loads, serves WebP format.
### Large JavaScript Bundle
Use dynamic imports for heavy components that aren't needed on initial load:
```tsx
import dynamic from 'next/dynamic'
const HeavyChart = dynamic(() => import('./HeavyChart'), {
loading: () => <p>Loading chart...</p>,
})
```
### Missing Loading States
Always show feedback during data fetching:
```tsx
// Use shadcn Skeleton component
import { Skeleton } from "@/components/ui/skeleton"
if (isLoading) return <Skeleton className="h-12 w-full" />
```
### No Caching Strategy
Cache slow database queries with `unstable_cache`:
```typescript
import { unstable_cache } from 'next/cache'
export const getStats = unstable_cache(
async () => {
const { data } = await supabase.from('stats').select('*')
return data
},
['dashboard-stats'],
{ revalidate: 3600 } // Refresh every hour
)
```
## Quick Wins Checklist
- [ ] All images use `next/image` component
- [ ] Heavy components use dynamic imports
- [ ] Loading states show skeleton/spinner
- [ ] Fonts loaded with `next/font`
- [ ] No unnecessary client-side JavaScript (`"use client"` only when needed)
## Automated Monitoring
- **Vercel Analytics** - Automatic on Pro plan, shows Core Web Vitals
- **Vercel Speed Insights** - Real user performance data