Reactive JDBC (R2DBC): Just try run full clean test build to see it is not failing. Connection to database will be lazily initialized only on publisher subscription execution
gradle
./gradlew build composeUp
./gradlew
java -jar build/libs/*.jar
# bash build/libs/*.jar
http :8080
http :8080/api
./gradlew composeDownmaven
./mvnw; ./mvnw docker-compose:up -P docker
./mvnw
java -jar target/*.jar
# bash target/*.jar
http :8080
http :8080/api
./mvnw docker-compose:down -P dockerInitially generated by using generator-jvm yeoman generator (java-spring-boot)
also see other r2dbc repositories