How should user session and shopping cart information be stored to adhere to Google-recommended practices?

Storing session information in Memorystore and the shopping cart in Firestore aligns with Google-recommended practices due to the nature of the services and their strengths in handling specific types of data.

Memorystore is designed for in-memory data storage, which significantly enhances the performance of session management. User sessions often require quick read and write operations, as they are frequently accessed during a user's interaction with an application. By utilizing a caching layer like Memorystore, which supports Redis and Memcached, you can efficiently manage user sessions with minimal latency, making it an optimal choice for scenarios that demand fast access and scalability.

On the other hand, using Firestore to store shopping cart information is advantageous because it offers a NoSQL document database that can handle structured and semi-structured data well. Firestore provides automatic scaling, real-time synchronization, and strong consistency, making it suitable for applications that require dynamic updates and immediate reflections in all user sessions. By storing shopping cart details in Firestore, developers can take advantage of its ability to manage complex data structures and handle varying query requirements, improving the user experience.

This combination leverages the strengths of both services, ensuring efficient session management and robust data handling for shopping cart functionality while adhering to best practices recommended by Google.