# Database Patterns

## Database Design
- **Normalization** vs **denormalization** strategies
- **Indexing** for query performance
- **Schema versioning** and migrations
- **Data modeling** for specific use cases

## Performance Optimization
- **Connection pooling** and management
- **Query optimization** and execution plans
- **Caching layers** (Redis, Memcached)
- **Read replicas** and load distribution

## Backup & Recovery
- **Automated backup** scheduling
- **Point-in-time recovery** strategies
- **Cross-region replication** for disaster recovery
- **Backup testing** and validation

## Security & Access Control
- **User privilege management** and roles
- **Data encryption** at rest and in transit
- **Audit logging** and compliance
- **Network security** and access restrictions

## Related Documentation
- Examples: `/examples/databases/mysql-setup.md`
- Examples: `/examples/databases/postgres-optimization.md`
- Examples: `/examples/databases/redis-caching.md`
- Reference: `/reference/databases/troubleshooting.md`
- Reference: `/reference/databases/performance.md`