Spring Boot MVC application with Thymeleaf template & basic spring security support, uses bootstrap for CSS and chart.js for rendering charts.

Spring Boot QueryDSL lets you query the database using domain specific language similar to SQL.

Spring Boot with RabbitMQ message broker that implements Advanced Message Queuing Protocol(AMQP)

Spring Boot with Micrometer & Integration with Prometheus & Grafana.

Spring Boot integration with Drools.