In the first three parts, we mastered the basics, architecture and configuration of Hibernate 7. But in reality, many projects fail not because of the complexity of the API, but because of its performance. Hibernate often has a reputation for being “bloated” or slow. The truth is: most of the time …

While REST often provides too much data (overfetching) or gRPC is too complex to handle for web clients, GraphQL has established itself as the standard for flexible front ends. With Spring Boot 4, the integration of spring-graphql is more seamless than ever before. Forget manual controller logic …

Do you know that? You start a new project with a clean domain model. Your Order entity is perfectly normalized, the database relationships are cleanly defined (3rd normal form), and saving an order is lightning fast. Everything feels right.