Spring Modulith – Spring for the Architecturally Curious Developer

on YouTube ↗01h 11m

" summary

Spring Modulith inspects package-based application modules and enforces visibility and acyclic dependencies with ArcUnit-backed verification, generates PlantUML/C4 docs, and offers IDE and actuator hooks. It provides vertical module tests that bootstrap only a module or its dependency subtree, and an event publication registry (JDBC/JPA) that logs published events transactionally so failed listeners can be retried. Demos run green and failing-listener scenarios persist events for later replay; a Kafka externalization prototype exists.

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" chapters (22)

1. 0:00Introduction and speaker background
2. 1:06Spring Modulith project overview
3. 2:28Sample e-commerce domain setup
4. 3:56From Post-its to production code
5. 5:19Technical vs business-driven structure
6. 9:36Encoding architectural advice into technology
7. 11:02Project structure with Spring Modulith
8. 14:13Module dependencies and visibility
9. 16:22Hiding internal module components
10. 21:05Modularity verification and testing
11. 24:15Q&A on module separation
12. 26:22Monolith vs microservices trade-offs
13. 28:10Vertical slicing integration tests
14. 34:36Documenting module structure
15. 42:52Module interactions and event-based design
16. 43:34Circular dependencies and transaction scope
17. 50:20Event-based interaction model
18. 54:40Handling event publication failures
19. 1:00:16Spring Modulith features recap
20. 1:03:47IDE and observability support
21. 1:04:29Release roadmap and upcoming features
22. 1:07:02Workshop invitation and closing

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