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 integration with Vault.

Spring cloud sleuth helps you trace a request and zipkin server help you trace in a distributed environment.

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

The N+1 query problem occurs when the framework executes N additional SQL statements to fetch the same data that could have been retrieved when executing the primary SQL query.