# Backup System - Quick Reference Card

## 🚀 Quick Commands

```bash
# Setup (first time only)
bash scripts/backup/setup.sh

# Daily operations
npm run backup:full          # Full backup
npm run backup:content       # Content only (quick)
npm run backup:verify        # Check health

# Emergency
npm run backup:list          # Show all backups
npm run backup:restore       # Restore (interactive)
```

---

## 📁 Directory Structure

```
backups/
├── daily/          # Last 7 days
├── weekly/         # Last 4 weeks
├── monthly/        # Last 3 months
├── pre-deploy/     # Last 10 deployments
├── incremental/    # Last 72 hours
└── safety/         # Pre-restore backups (30 days)
```

---

## ⏰ Automated Schedule

| When | What | Retention |
|------|------|-----------|
| **Daily 2:00 AM** | Full backup | 7 days |
| **Every 6 hours** | Incremental (content) | 72 hours |
| **Sunday 3:00 AM** | Cleanup old backups | Auto |
| **Daily 9:00 AM** | Verify backup health | N/A |

---

## 🔧 Setup Automation

### Linux/macOS
```bash
crontab -e
# See scripts/backup/cron.example for template
```

### Windows
```powershell
# Run as Administrator
.\scripts\backup\windows-tasks.ps1
```

---

## 🆘 Emergency Restore

```bash
# 1. List backups
npm run backup:list

# 2. Restore from specific backup
npm run backup:restore backups/daily/full-backup-2026-03-21.tar.gz

# 3. Verify and rebuild
npm install
npm run build
npm run test
```

---

## ✅ Health Check

```bash
# Quick status
npm run backup:verify

# Check what's in a backup
tar -tzf backups/daily/latest-full.tar.gz | less

# Check backup age
ls -lht backups/daily/
```

---

## 📋 Pre-Deployment Checklist

- [ ] Run config backup: `npm run backup:config`
- [ ] Verify backup created: `ls -lht backups/pre-deploy/`
- [ ] Note backup location for potential rollback
- [ ] Proceed with deployment

---

## 🔐 What Gets Backed Up

✅ **Included:**
- `src/` - All source code
- `public/` - Public assets
- `src/content/` - Blog posts, content
- Config files (astro, tailwind, etc.)
- `.env` - Environment variables
- `package.json` - Dependencies

❌ **Excluded:**
- `node_modules/` - Reinstallable
- `dist/` - Build artifacts
- `.astro/` - Build cache
- `test-results/` - Test outputs
- `.git/` - Version control

---

## 🚨 Alert Thresholds

| Condition | Action |
|-----------|--------|
| Latest backup > 24h | ⚠️ Warning |
| Latest backup > 48h | 🚨 Critical |
| Corrupted backup | 🚨 Critical |
| Storage > 80% | ⚠️ Cleanup needed |
| Storage > 5GB | ⚠️ Review retention |

---

## 🛠️ Troubleshooting

### Backup fails
```bash
df -h                        # Check disk space
ls -la backups/              # Check permissions
npm run backup:verify        # Verify system
```

### Restore fails
```bash
tar -tzf backup.tar.gz       # Verify integrity
npm run backup:verify backup.tar.gz
```

### Missing files after restore
```bash
tar -tzf backup.tar.gz | grep "filename"
```

---

## 📞 Emergency Contacts

| Issue | Contact |
|-------|---------|
| Backup system failure | DevOps Lead |
| Cannot restore | Tech Lead |
| Disk space full | Platform Admin |
| Corrupted backup | DevOps Lead |

---

## 📚 Documentation

- **Full strategy:** `.agents/devops-engineer/BACKUP_STRATEGY.md`
- **Scripts README:** `scripts/backup/README.md`
- **Deployment:** `DEPLOYMENT.md`

---

## 💡 Best Practices

1. ✅ **Test restores monthly** - Verify backups work
2. ✅ **Always backup before deployment** - Safety first
3. ✅ **Monitor backup health** - Check verification output
4. ✅ **Keep multiple backup types** - Redundancy
5. ✅ **Secure environment files** - Encrypt if needed

---

**Last Updated:** 2026-03-21
**Version:** 1.0