Update README.md

Author: AnghelLeonard

README.md

@@ -3257,3 +3257,11 @@ This kind of checks or constraints are easy to implement via database triggers.
 
 **Note:** Do not conclude that Query By Example (QBE) defines only the `exists()` method. Check out all methods [here](https://docs.spring.io/spring-data/commons/docs/current/api/org/springframework/data/repository/query/QueryByExampleExecutor.html).
 
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+230. **[Best Way To Use `@Transactional`](https://github.com/AnghelLeonard/Hibernate-SpringBoot/tree/master/HibernateSpringBootTransactionalInRepository)**
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+**Description:** This application is meant to highlight that the best place to use `@Transactional` for user defined query-methods is in repository interface, and afterwards, depending on situation, on service-methods level.
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+**Key points:**
+- this application is dissected in my book, **Spring Boot Persistence Best Practices**.