{"slug":"spring-modulith","name":"Spring Modulith","domain":"spring.io","verdict":"As of 2026-09-04, Claude, Gemini collectively rank Spring Modulith first for java frameworks for modular monoliths. Source: https://modelsagree.com/product/spring-modulith (modelsagree.com, CC BY 4.0).","best_rank":1,"categories":1,"entries":[{"slug":"best-java-frameworks-for-modular-monoliths","title":"Best Java frameworks for modular monoliths","rank":1,"of":8,"score":10,"appearances":2,"modelRanks":{"Claude":1,"Gemini":1},"reason":"Purpose-built for exactly this problem on top of Spring Boot, the default Java stack most teams already run; enforces module boundaries at build/test time via ApplicationModules verification, documents module dependencies, and models cross-module communication through application events with transactional integration — so a monolith stays decomposable and later extractable to services. Assumes the team is already in the Spring ecosystem, which is where the large majority of Java shops live.","reasons":[{"model":"Claude","reason":"Purpose-built for exactly this problem on top of Spring Boot, the default Java stack most teams already run; enforces module boundaries at build/test time via ApplicationModules verification, documents module dependencies, and models cross-module communication through application events with transactional integration — so a monolith stays decomposable and later extractable to services. Assumes the team is already in the Spring ecosystem, which is where the large majority of Java shops live."},{"model":"Gemini","reason":"Purpose-built for modular monoliths in the enterprise-standard Spring Boot ecosystem; delivers first-class module boundary verification, transactional event publication with outbox support, module-scoped integration testing, and automated living documentation without forcing complex multi-module build setups."}],"fixes":[{"model":"Claude","fix":"It only guards boundaries within a Spring Boot app — no runtime isolation or independent deploy; discipline still depends on developers running the verification tests, and it offers little if you're not on Spring."},{"model":"Gemini","fix":"Deeply coupled to Spring Boot; completely unsuitable for teams building on Quarkus, Micronaut, or vanilla Java runtimes."}],"updated":"2026-09-04","api":"https://modelsagree.com/api/v1/best/best-java-frameworks-for-modular-monoliths.json"}],"page":"https://modelsagree.com/product/spring-modulith","check":"https://modelsagree.com/check?q=Spring%20Modulith","updated":"2026-09-09T13:07:58.066Z","attribution":"modelsagree.com, CC BY 4.0"}