Scalability & Statelessness Strategy¶

The system is designed for horizontal scaling with stateless components.

Horizontal Scaling Plan¶

• Frontend: Multiple instances behind load balancer
• Backend: Multiple FastAPI workers
• Database: Read replicas for read-heavy workloads
• Workers: Multiple consumer processes

Stateless Design Principles Applied¶

All components are designed to be stateless:

• Session data stored in Redis
• User state persisted in database
• File uploads stored in object storage
• No local file system dependencies

Load Distribution Mechanisms¶

• Load balancers for external traffic distribution
• Kubernetes service discovery for internal communication
• Database connection pooling for efficient resource usage

Caching Strategy Overview¶

Caching is implemented at multiple levels:

• CDN for static assets
• Redis for session data and temporary storage
• Database query caching where appropriate
• HTTP caching headers for API responses