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Spring Modulith Structures Spring Boot 3 Applications with Modules and Events
VMware shipped the experimental Spring Modulith project to better structure Spring Boot 3 applications with modules and events. The project introduces new classes and annotations but doesn't generate code. Modules map to Java packages and are encouraged to use Spring events which can be automatically stored in an event log. Spring Modulith also eases the testing of modules and events.
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Decomposing a Monolith Does Not Require Microservices - Sam Newman at QCon London
Sam Newman says the goal of decomposing a monolith must be independent deployability, and developers need to focus on the outcome, not the technology. Speaking at QCon London, he said, "The monolith is not the enemy" and, "Microservices should not be the default choice."
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To Microservices and Back Again - Why Segment Went Back to a Monolith
When Segment moved to a microservices architecture, they gained environmental isolation, but at a cost of higher operational overhead. Three years later, the costs were too high, and the team migrated back to a monolith. At QCon London, Alexandra Noonan told the cautionary tale, and emphasized the importance of evaluating trade-offs in architectural decisions.