Strategies for transitioning to microservices
It is time to dive into the code of our ERP system to bring all the patterns discussed in this chapter together. The first step in transitioning from a monolith to microservices is identifying the contexts and establishing clear boundaries around them. This ensures proper subdomain isolation, which is critical for successful migration.
Figure 10.3 shows the solution as found in the 02-monolith_with_cqrs branch of the book’s GitHub repository:
Figure 10.3 – Modular architecture with mediator
It’s crucial to progress in small, manageable steps. Once you’ve split the solution into clearly defined bounded contexts, it’s essential to ensure that each bounded context remains independent, with no dependencies on one another. At this stage, you can leverage fitness functions (see the Testing and stabilizing section in Chapter 6, Transitioning from Chaos) to validate your design.
As discussed...
