Propose a system architecture: how to divide databases between services, how to organize Redis for the game service?

For a system architecture with multiple services and databases, it is important to adhere to the principles of separation of concerns and data isolation:

• Each service owns its own database, preventing direct access to other services' data and simplifying scaling.
• Redis is well-suited for storing game sessions, cache, and quick game state operations, and can be organized as a cluster for fault tolerance and scalability.

Organizing Redis for the game service:

• Use Redis as an in-memory store for player sessions, temporary data, and event queues.
• Configure a Redis cluster with replication to ensure high availability.
• Use TTL (time-to-live) for keys to automatically delete outdated data.
• If necessary, use Redis Pub/Sub or Streams for communication between game components.

This approach will ensure fast data access, scalability, and system resilience.