Add a PostgreSQL database to your Spring Boot project
Spring Boot, PostgreSQL, JPA, Hibernate RESTful CRUD API Example | CalliCoder
GitHub - tirmizee/Spring-Boot-JPA-Multi-Databases-And-Rollback-Transaction: Spring Data JPA multi-databases and rollback transaction using Hikari connection pool.
Build Spring Boot Restful CRUD API with Hibernate and Postgresql from scratch - PixelTrice