Content:

In this workshop, participants will learn how to use Spring Modulith (from version 1.3.4) in their own Spring Boot projects and how to implement modular architecture principles in practice. We place particular emphasis on:

– The theoretical classification:
... - What are modular monoliths and why is the approach attractive?
– The internal functioning of Spring Modulith:
... - How are modules delimited?
... - How does Spring Modulith support the handling of domain events, logging and test strategies?
– The practical application:
... - Step-by-step extension of a Spring Boot application with Modulith functionalities
– A critical comparison:
... - When is a modular monolith advantageous compared to microservices and what are the limitations?

Important: As Spring Modulith was developed as an extension for Spring Boot, basic knowledge of Spring Boot is a prerequisite.

Contents and topics:

1. Basics of modular monoliths
– Definition and advantages of a modular monolith
– Architectural principles: Encapsulation, high cohesion, loose coupling
– Spring Modulith in context: How does the approach differ from classic monoliths and microservices?

2. Spring Modulith at a glance
– How it works: Recognizing modules via package structures and conventions
– Differentiation: public interfaces vs. internal implementation details
– Internal mechanisms: Use of ArchUnit to monitor module boundaries

3. Module interaction and domain events
– Implementation of event-driven communication between modules
– Publishing and receiving domain events with @ApplicationModuleListener
– Logging and tracking of event delivery

4. Practice: development of a modular monolith
– Setting up a Spring Boot project with Spring Modulith
– Definition of modules and visualization of dependencies
– Writing and executing integration tests with @ApplicationModuleTest
– Generating documentation (e.g. AsciiDoc/HTML) directly from the code

5. Microservices vs. modular monolith - reflection
– Discussion: When does which approach make sense?
– Experience reports and best practices
– Outlook: What next after the workshop?

We focus on a specific set of topics to look at and understand in detail.

Disclaimer: The actual course content may vary from the above, depending on the trainer, implementation, duration and constellation of participants.

Whether we call it training, course, workshop or seminar, we want to pick up participants at their point and equip them with the necessary practical knowledge so that they can apply the technology directly after the training and deepen it independently.