Implement Inventory Management and Cart Features

Summary by Bito

Implementation of an inventory management system with shopping cart functionality, featuring Flask application setup with Redis caching and database sharding. The system includes user authentication, cart operations, and a recommendation engine, built on a distributed architecture for scalability. Key technical components include rate limiting, multi-shard database configuration, and performance optimization through caching.

Unit tests added: False

Estimated effort to review (1-5, lower is better): 2