Has there been experience in decomposing a monolith into microservices?

Yes, the experience of decomposing a monolith into microservices typically includes the following stages:

• Analyzing the current architecture and identifying bounded contexts.
• Defining services based on business functions or modules.
• Extracting common libraries and infrastructure.
• Gradually migrating functionality from the monolith to separate services with clearly defined APIs.
• Ensuring interaction between services via REST, gRPC, messages, or other protocols.
• Implementing CI/CD, monitoring, and configuration management for microservices.

It is important to minimize impact on users and ensure backward compatibility during the process. Considerations should also include transactions, data consistency, and distributed tracing.

For example, in Java projects, Spring Boot is often used for microservices, along with Spring Cloud, Kafka, or REST API for communication.