What approaches and practices are used when interacting with a database within a microservices architecture?

When working with a database in a microservices architecture, it is important to follow these approaches:

• Data isolation: each microservice owns its own database to avoid tight coupling and ensure independence.
• Using APIs for interaction: microservices communicate with each other through well-defined interfaces (REST, gRPC), not directly through the database.
• Transactions and consistency: distributed transactions are complex, so often eventual consistency and patterns like sagas are used to manage business processes.
• Caching: to improve performance, data caching at the microservice level can be employed.
• Monitoring and logging: tracking database requests and microservice states helps quickly identify issues.

Example: the "Orders" microservice stores its data in a separate database, and to get user information, it contacts the "Users" microservice via API, not directly to its database.