I am pleased to announce the availability of Spring Modulith 2.0 RC1, 1.4.4, and 1.3.10. The latter two ship bug fixes and the general dependency upgrades. The release candidate primarily contains polish of the new features introduced in the milestone releases and a few new ones:

• Support for application-module-specific Flyway migrations #1067
• Upgrade to Spring Boot 4.0 RC1 #1415

Find more details about the releases in the full changelog.

I am pleased to announce the availability of Spring Modulith 2.0 M3. It release ships the following new features:

• Updated event publication repository implementation for JPA #1375
• Support for serialized event publication externalization #1370
• Jackson 3 support for event publication serialization and externalization #1369, #1364
• More lenient out-of-the-box verification for Hexagonal Architecture #1366
• Upgrade to Spring Boot 4.0 M3 #1376
• Upgrade to jMolecules 2025 RC5 #1377

Find more details about the releases in the full changelog.

I am pleased to announce the availability of Spring Modulith 2.0 M2, 1.4.3 and 1.3.9. The bugfix releases contain the usual dependency upgrades and a few minor improvements. The 2.0 M2 release ships the following new features:

• Updated event publication repository implementation for MongoDB #1336
• Updated event publication repository implementation for Neo4j (thanks, @meistermeier) #1337
• Improve bootstrap procedure for ApplicationModulesEndpoint #1338
• Upgrade to Spring Boot 4.0 M2 #1354

Find more details about the releases in the full changelogs for 2.0 M2 1.3.8 and 1.4.2.

I am excited to announce the release of Spring Modulith 2.0 M1. It marks the starting point of a new generation and is thus based on the latest Spring Boot 4 M1 release and Spring Framework 7.0 M7. The main feature of the upcoming generation of Spring Modulith will be the revamped Event Publication Registry that'll address many of the limitations of the current version.

Spring Modulith 2.0 M1 ships the major changes anticipated for the registry, and the JDBC implementation is tweaked to support the new event publication status model. All other store modules have been updated to still work but…

I am pleased to announce the availability of Spring Modulith 1.4.2 and 1.3.8. The releases contain the usual dependency upgrades to the latest Spring Boot and Framework versions.

1.4.2 ships with more detailed application module metadata generated into application-modules.json (either with our AOT support enabled during the build or via the documentation generated through the Documenter API). This has enabled our friends at Sonargraph, a tool to logically define application architectures and perform advanced exploration and verification, to build integration for Spring Modulith applications. As described in their announcing blog post, they now support creating an architecture definition by picking up the structure defined in you application…

I am pleased to announce the availability of Spring Modulith 1.4.1 and 1.3.7. The releases contain the usual dependency upgrades to the latest Spring Boot and Framework versions. 1.4.1 additionally ships the following bug fixes and improvements:

Improvements

• Reflection metadata missing in JSONPath lookup for application module identifiers on GraalVM #1250
• Prevent application module misconfiguration due to invalid additional packages #1247

Bugs

• Incompatible path handling for KAPT with Maven #1255
• Fix automatic module name of Moments artifact #1220

Find more details in the full changelogs for 1.4.1 and 1.3.7…

On behalf of the community, I am delighted that after a half year's work we can announce Spring Modulith 1.4. The release is packed with new features, such as:

Core

• Refinements in the core ApplicationModule(s) abstractions and documentation generation (GH-1150, GH-1152)
• We introduced an SPI to detect NamedInterfaces programatically (GH-1009).
• We fixed a performance regression in JavaPackage the erroneously repeatedly recomputed all sub packages. (also fixed in 1.3.4 and 1.2.10, GH-1098)

Testing

• Integration tests using @ApplicationModuleTest can now consume bean instances of classes declared in test sources. (GH-202)
• The global PublishedEvents instance registered in an ApplicationContext will now be an AssertablePublishedEvents if AssertJ is on the classpath. (GH-1110)
…

I am happy to announce the availability of Spring Modulith 1.4 RC1, 1.3.5, and 1.2.11. While the latter contain a few bug fixes and the usual dependency upgrades to the latest Spring Boot releases, the milestone also includes a few new features:

• Performance improvements both in the core event publication registry and the observability instrumentation. (GH-1146, GH-1149)
• The Scenario API only considers non-empty collections as successful state transitions by default (GH-1131)
• Refinements in the core ApplicationModule(s) abstractions and documentation generation (GH-1150, GH-1152)
• Minor (internal) cleanups (GH-1153, GH-1122)
…

I am happy to announce the availability of Spring Modulith 1.4 M3, 1.3.4, and 1.2.10. While the latter contain a few bug fixes and the usual dependency upgrades to the latest Spring Boot releases, the milestone also includes a few new features:

• Integration tests using @ApplicationModuleTest can now consume bean instances of classes declared in test sources. (GH-202)
• The global PublishedEvents instance registered in an ApplicationContext will now be an AssertablePublishedEvents if AssertJ is on the classpath. (GH-1110)
• We fixed a performance regression in JavaPackage the erroneously repeatedly recomputed all sub packages. (also fixed in 1.3.4 and 1.2.10, GH-1098)
…

I am happy to announce the availability of Spring Modulith 1.4 M2, 1.3.3, and 1.2.9. While the latter contain a few bug fixes and the usual dependency upgrades to the latest Spring Boot releases, the milestone release ships a couple of important new features.

• The observability module now automatically creates counters for application events published by modules. A new ModulithEventMetrics API has been introduced and can be used through ModulithEventMetricsCustomizer beans registered in the ApplicationContext (GH-1068).
• The runtime support has been revamped to avoid the dependency on an external library to topologically sort application modules, so that they can be traversed in dependency order (GH-1060). This allows assuming a stable module order in the application metadata file that – previously only created in AOT mode – is now also written when generating documentation (GH-1063). That in turn allows us to avoid the full bootstrap of an ApplicationModules instance at runtime, for example, to execute ApplicationModuleListener beans (GH-1062, GH-1065…