The best way to use the Spring Data JPA Specification
Introduction In this article, we are going to see what is the best way to use the Spring Data JPA Specification when combining multiple predicates with the result set ordering logic. While you can also use query methods or the @Query annotation to define your Spring Data queries, the Spring Data JPA Specification allows you to compose dynamically various filtering criteria, which may be very convenient when you’d, otherwise, end up with lots of query method permutations.
The best way to use JOIN FETCH and Pagination with Spring
Introduction In this article, we are going to see how we can use the JOIN FETCH clause when fetching a child collection eagerly while also limiting the number of parent records using pagination in a Spring Data JPA application. I decided to write this article because the most common solution used in many projects turns out to be extremely inefficient.
The best way to use Spring Data query methods
Introduction In this article, we are going to see how Spring Data query methods are built, when you should use them, and especially when you should avoid them. I decided to write this article after answering this StackOverflow question, which depicts an 87-character-long Spring Data query method. TL;DR, Don’t write query methods that cannot even fit on the screen.
Fault Tolerance with Spring Data and YugabyteDB
Introduction In this article, we are going to see how we can achieve fault tolerance in your Spring Data application with the help of YugabyteDB. As previously explained, YugabyteDB is an open-source distributed SQL database that combines the benefits of traditional relational databases with the advantages of globally-distributed auto-sharded database systems.
The awesome BaseJpaRepository from Hypersistence Utils
Introduction In this article, I’m going to explain how you can use the BaseJpaRepository from the Hypersistence Utils OSS project as an alternative to the default Spring Data JpaRepository. The reason why I’m not using the default JpaRepository on any of my Spring projects is that it provides some terrible defaults that can be very easily misused, like: The findAll Anti-Pattern The JPA save Anti-Pattern So, there are two ways you can fix the problems induced by the default JpaRepository: You can use the HibernateRepository to deprecate the questionable methods that you… Read More
The Spring Data JPA findById Anti-Pattern
Introduction In this article, we are going to see how the Spring Data JPA findById method can become an Anti-Pattern when using it to reference parent entity associations.
Spring Data JPA entity locking
Introduction In this article, we are going to see what options Spring Data JPA offers for entity locking. We will see how we can apply a shared or exclusive row-level lock upon fetching one or multiple entities.
How to write a custom Spring Data Base Repository
Introduction In this article, we are going to see how we can write a custom Spring Data base Repository that you could use instead of the default ones, like the overly common JpaRepository. Now, why would you even want to do that? Well, most of the default repositories extend the CrudRepository, which provides some very questionable defaults, like findAll or deleteAll that shouldn’t be really inherited by every single data access Repository instance.
The Spring Data findAll Anti-Pattern
Introduction In this article, we are going to see why inheriting the default Spring Data findAll method in every data access Repository is a terrible Anti-Pattern.
The best way to fetch a Spring Data JPA DTO Projection
Introduction In this article, I’m going to show you what is the best way to fetch a Spring Data JPA DTO Projection. Apart from the basic use cases, we’re going to see how to fetch even hierarchical DTO structures using Spring Data JPA.
